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Epson L-4733A Operation Manual

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Operation Guide

CMP0332-04 EN

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Page 1 Operation Guide CMP0332-04 EN Original instructions...
Page 2 Epson printer. Epson is not responsible for any use of this information as applied to other printers. Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result of accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the U.S.) failure to strictly comply with Seiko Epson Corporation’s operating and maintenance instructions.
Page 3 This device is certified as "DIC COLOR GUIDE Certified" under the following conditions. Ink: Epson genuine ink Substrate: Lintec ART E PW 8 K Software and Output Settings: Epson Edge Print Label Evaluation conditions: D50 2° field of view Attention 1.
Page 4: Table Of Contents
L-4733A/L-4733AW Operation Guide Contents Contents Copyrights and Trademarks Basic Operations Basic Workflow......42 Safety Instructions and Notes on Starting up the Press and Performing Startup Inspection.
Page 5 L-4733A/L-4733AW Operation Guide Contents Head Maintenance..... 124 Setting Item......187 Press Settings.
Page 6 L-4733A/L-4733AW Operation Guide Contents Inspection Frequency for High Capacity Usage. . . 242 If you do not have new wiper pads... . 370 Feeding Unit......242 When Problems Cannot be Resolved.
Page 7: Safety Instructions And Notes On Usage
The symbols on this Epson product are used in order to ensure safety and proper use of the product and to prevent danger to customers and other persons, and property damage. The symbols indicate the meaning below. Be sure that you completely understand the meaning of symbols on this product before using it.
Page 8 L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage Caution - Risk of electric shock Caution - Risk of being caught in the machinery Caution - High temperature Caution - Low clearance Warning Except as instructed in the manual, do not touch any other parts inside this product.
Page 9 L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage Warning ❏ Never place your hand and so on near the roller while the press is operating. Hands, hair, clothes, and so on may be caught in the roller. ❏ Before performing inspections and cleaning of the feeding unit, the heater, or the rewinder section, switch to Motor Drive Off mode on the touch panel's Periodic Maintenance screen.
Page 10 L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage Caution Check that the heater and drying heater have cooled sufficiently before performing part replacements or maintenance inspections. Burns could occur if you touch them while in operation or immediately after operation.
Page 11: General Notes
L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage Caution When cleaning the cover head, be careful not to bang your head on the product's structural parts or the operation table. A head injury may occur. General Notes Warning Do not remove any parts except as indicated in the manual, and do not install unauthorized parts, disassemble, or remodel.
Page 12 L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage Warning Do not use this product if foreign substances, water, or other liquids have entered the product. Electric shock or fire could occur. Turn OFF the breaker on the back of the main unit immediately, and then contact service support.
Page 13: Notes On Consumables
L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage Caution Perform operations for the Rewinder and surrounding area after pressing the Wind Ready switch and confirming that the lamp is off. Cutting the substrate or operating the nip lever while the lamp is lit causes a sudden winding and may result in an injury.
Page 14: Notes On Usage
L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage Notes on Usage Notes on the Usage Environment ❏ We recommend using this product at a room temperature of 20 to 26˚C. ❏ You can use this product up to 2000 m above sea level. Do not use it at a higher altitude.
Page 15 ❏ To ensure optimum press performance, we recommend using genuine Epson ink cartridges. Using non-genuine products may have an adverse affect on the press or print quality, and prevent you from getting the optimum performance from your press.
Page 16: Notes On Handling White Ink Cartridges
“Replacing Ink Cartridges” on page 230 Notes on handling substrate ❏ We recommend using substrate tested by Epson. Before using substrate that has not been tested, make sure that the print result and quality are not compromised and the press is not damaged.
Page 17 L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage ❏ Do not bend the substrate or scratch the printable surface of the substrate. ❏ Do not touch the printable surface of the substrate. Moisture and oil from hands can have an adverse effect on the print quality.
Page 18: Clothes For Work
L-4733A/L-4733AW Operation Guide Safety Instructions and Notes on Usage Clothes for Work Do not wear ties, accessories, or loose clothing when operating or inspecting the press as these could become entangled in the rollers.
Page 19: Overview Of The Product
L-4733A/L-4733AW Operation Guide Overview of the Product Overview of the Product...
Page 20: System Organization
L-4733A/L-4733AW Operation Guide Overview of the Product System Organization This press is organized as shown in the illustration below.
Page 21: Press Parts
L-4733A/L-4733AW Operation Guide Overview of the Product Press Parts Left Side Letter Name Explanation Lock release button Push when opening the ink cartridge cover. Ink cartridge lamp Indicates the status of each ink cartridge. “Status of the Ink Cartridge Arrangement and Lamps” on page 228 Ink Cartridge Two ink cartridges are installed for each color.
Page 22: Front
L-4733A/L-4733AW Operation Guide Overview of the Product Letter Name Explanation Feeding unit Feeds the loaded substrate automatically. Tape cutter stand Stores tape cutters and cutters used for cutting the substrate. Switch for changing the feed Changes the feed direction for the substrate.
Page 23: Right Side
L-4733A/L-4733AW Operation Guide Overview of the Product Letter Name Explanation Platen The platform where printing is performed. Flushing unit Collects waste ink during head maintenance. Top cover 1 Open when performing maintenance. The light on the other side of the cover turns on when it is opened.
Page 24: Rear
L-4733A/L-4733AW Operation Guide Overview of the Product Rear Letter Name Explanation Rear fan A fan for exhausting air. Network connector Connects the network cable. Intake and exhaust vent An intake and exhaust vent for the heater. Breaker Set to ON to supply power to the press. Turn the breaker OFF to stop supplying power to the press.
Page 25: Pilot Lamp
L-4733A/L-4733AW Operation Guide Overview of the Product Letter Name Explanation Slow Feed switch Slowly feeds the substrate while pushed down. Feeds 1 mm at a time if you press and immediately release the switch. Power lamp Lit when the breaker is on.
Page 26: Product Specifications
L-4733A/L-4733AW Operation Guide Overview of the Product Letter Name Explanation Green lamp Lit or flashing when the press is operating normally. ❏ Indicates printing is in progress. ❏ Flashing Indicates a status other than printing. Product Specifications Explanation Reference Specifications for the press and the rewinder.
Page 27: Basic Specifications
L-4733A/L-4733AW Operation Guide Overview of the Product Basic specifications Press Main Unit and Touch Panel External dimensions Length: 5100 mm Width: 1910 mm (With Rewinder) Length: 3950 mm Width: 1910 mm (Without Rewinder) “External dimensions and necessary space” on page 34...
Page 28 L-4733A/L-4733AW Operation Guide Overview of the Product Press Main Unit and Touch Panel Temperature and Recommended environment when printing: humidity Temperature: 20 to 26˚C Humidity: RH 35 to 55% without condensation Recommended environment when stopped (at night and so on): Temperature: -10 to 40˚C...
Page 29: Substrate Specifications
L-4733A/L-4733AW Operation Guide Overview of the Product Rewinder (Optional item) Rewinder Auto winding Wind-up speed When printing: 9.9 m/minute When using the Feed switch on the press: 9.9 m/minute When performing initial winding: 3 m/minute Substrate removal Manual operation method Be sure to use appropriate transport equipment such as a lifter.
Page 30 L-4733A/L-4733AW Operation Guide Overview of the Product Joining Tested tape thickness: 25μm (both sides) Do not overlap the substrate at the joined section. Tensile strength At least 2,100 N/m Unusable substrate The following substrates cannot be used. ❏ Metallic luster or black faces, and transparent separators ❏...
Page 31: Substrate Joining Specifications
L-4733A/L-4733AW Operation Guide Overview of the Product Substrate joining specifications When the source roll is joined Detectable tape and Type Tape sticking method Width 20mm or more Thickness 0.05mm or more The total thickness, including the substrate, should not exceed 0.32 mm.
Page 32: Substrate Width And Platen Cover Sheet Combinations
L-4733A/L-4733AW Operation Guide Overview of the Product Substrate Width and Platen Cover Sheet Combinations Substrate Width Platen Cover Sheet Combinations 80 to 90mm 1 at 220mm wide and 1 at 20mm wide (total of 240mm) 90 to 100mm 1 at 220mm wide and 1 at 10mm wide (total of 230mm)
Page 33: Daily Report Save Function
L-4733A/L-4733AW Operation Guide Overview of the Product Daily Report Save Function This press can automatically send a daily print history report to a specified folder on the user's computer. Specifications for the daily report file Save timing When the press shuts down...
Page 34: External Dimensions And Necessary Space
L-4733A/L-4733AW Operation Guide Overview of the Product External dimensions and necessary space Unit: mm External dimensions Illustration from above Illustration from the front 5100 3950 Necessary space 6640...
Page 35: Substrate Path Channel
L-4733A/L-4733AW Operation Guide Overview of the Product Substrate Path Channel The following shows the substrate path channel inside the press. The total path length from the feed shaft to the winding shaft is 11.5 m. Printing Speed Print speed is calculated based on our own standards. Depending on the conditions, the actual printing speed may differ.
Page 36: Detailed Specifications For Color Print Mode
L-4733A/L-4733AW Operation Guide Overview of the Product Detailed Specifications for Color Print Mode Uncoated Paper Select this when using non-glossy paper high quality paper or Japanese paper. Item Additional Notes Uncoated Paper, 2 pass This mode is for text and barcodes. When printing data...
Page 37 L-4733A/L-4733AW Operation Guide Overview of the Product Item Additional Notes Coated Paper, 6 pass (#0), High Duty Color print mode for Gross PW. Select this when printing in Gross PW. ❏ Coated Paper, 8 pass (#0) Normally, select #0. ❏...
Page 38: System Requirements
L-4733A/L-4733AW Operation Guide Overview of the Product Item Additional Notes ❏ Film, 8 pass (#0) Normally, select #0. ❏ When you select a mode with an "A" before the number, Film, 8 pass (#1) over print liquid is applied at the same time as the color ink which reduces ink stains on the white background.*...
Page 39: Open Source Software
“If you do not have new wiper pads” on page 370 Open Source Software In addition to the Epson proprietary software, this product also uses open source software. The open source software and licensing conditions used for this product are as follows.
Page 40: Libtiff
L-4733A/L-4733AW Operation Guide Overview of the Product Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: ❏ Redistributions of source code must retain the above copyright notice, definition, disclaimer, and this list of conditions.
Page 41 L-4733A/L-4733AW Operation Guide Overview of the Product Revision Summary See Page Replaced some photos due to changes in the shape of the “Flushing Unit” on page 297 flushing unit. (Cleaning procedures have not been changed. )
Page 42: Basic Operations
L-4733A/L-4733AW Operation Guide Basic Operations Basic Operations Basic Workflow The following outlines the workflow from start to finish. Work/Operation Contents See Page <Startup Inspection> Press (Control panel) Move the press switch from P to Standby. “Starting up the Press and Performing Startup Inspection”...
Page 43 L-4733A/L-4733AW Operation Guide Basic Operations User's Computer Send the print data to the press from Epson Edge “Starting to Print” on page 98 Print Label or your RIP software. U Help for Epson Edge Print Label U Adobe Illustrator Output plug-in...
Page 44: Starting Up The Press And Performing Startup Inspection
L-4733A/L-4733AW Operation Guide Basic Operations Starting up the Press and Performing Startup Inspection To start the press, you need to perform the Startup Inspection. Set the breaker to ON. Move the press switch from P to Standby. The press starts and the screen is displayed on the touch panel.
Page 45 L-4733A/L-4733AW Operation Guide Basic Operations Check that the press and the surrounding areas are safe, and then press OK. Important: ❏ Before starting work or printing operations, make sure there are no tools or jigs on the platen. If the carriage comes in contact with any tools and jigs, the carriage or the head could be damaged.
Page 46: Creating Print Data
L-4733A/L-4733AW Operation Guide Basic Operations Note: When you restart the press and so on, you can skip daily and weekly inspections and cleaning. If it is not necessary, press Cancel Periodic Maint. Mix the white ink for white ink models.
Page 47: Printable Area
L-4733A/L-4733AW Operation Guide Basic Operations Printable area Arrange your label design data within the printable area (the gray area in the illustration below). Item Size a (print length) 0.1 to 914.4 mm (0.01 to 36inch) We recommend 10.0 mm or higher.
Page 48: Creating Presets/Print Info
L-4733A/L-4733AW Operation Guide Basic Operations Print (Imposition) Data Print Result Important: When performing variable printing which has a different design for each page, printing may stop between pages. Note that some substrates may become unsuitable for printing such as forming creases.
Page 49: Creating And Editing Print Info
L-4733A/L-4733AW Operation Guide Basic Operations After creating a preset, set it as the default preset. “Setting the Default Preset” on page 52 See the following to delete a preset or the print information you have created. “Deleting Presets/Print Info.” on page 52 Creating and Editing Print Info.
Page 50: Creating And Editing Presets
L-4733A/L-4733AW Operation Guide Basic Operations Change the values for each item and then press OK. When you select an item and press Edit, or double-tap or double-click the item, the editing screen is displayed and you can change the values.
Page 51 L-4733A/L-4733AW Operation Guide Basic Operations Press Preset Management from the menu on the left on the touch panel. Press Create New. Or you can select a preset with similar setting values from the list, and then press Copy and Create.
Page 52: Setting The Default Preset
L-4733A/L-4733AW Operation Guide Basic Operations When the print data uses a halftone input format, do not select the RGB, CMYK, INK check boxes. This completes this section. Setting the Default Preset To set a preset you created as the default preset, select the preset from the list on the Preset Management screen, and then press Default Preset Settings.
Page 53: Changing The Substrate
L-4733A/L-4733AW Operation Guide Basic Operations Item Explanation Print Info. Select the Print Info. you want to delete, and then press Delete. Pre-registered Print Info. (BXXX) or Print Info. set in the preset cannot be deleted. Changing the Substrate This section explains the procedure for loading new substrate by joining it to the previously loaded substrate.
Page 54 L-4733A/L-4733AW Operation Guide Basic Operations Press Preset Management from the menu on the left on the touch panel. Select the preset to match the substrate you are loading, and set it as the default preset. Select the preset used for printing, and then press Default Preset Settings. A check mark is displayed on the left of the preset name.
Page 55 L-4733A/L-4733AW Operation Guide Basic Operations From the menu on the left, press Substrate Settings and then Change Substrate. Note: If you want to cancel the substrate replacement procedure, press Cancel (Substrate not changed) from the Change Substrate screen. Open top cover 2 on the press.
Page 56 L-4733A/L-4733AW Operation Guide Basic Operations Push the fixing part on the right towards the left to remove the back curl suppressor. Press the Feed Ready switch on the feeding unit to stop automatic feeding. Check that the Feed Ready switch lamp is off.
Page 57 L-4733A/L-4733AW Operation Guide Basic Operations Cut the substrate on the workbench. Place magnetic bars on both sides of the cut position to secure the substrate, and then cut. Remove the substrate. Raise the winding deterioration prevention lever. Note: When you raise the winding deterioration prevention lever, the Feed Ready switch lamp flashes to indicate that the lever is raised.
Page 58 L-4733A/L-4733AW Operation Guide Basic Operations Adjust the near end sensor to match the external diameter of the paper core for the new substrate. Measure the external diameter of the paper core for the new substrate. Loosen the screw, match the value measured by the top edge sensor to the external diameter of the paper core, and then tighten the screw.
Page 59 L-4733A/L-4733AW Operation Guide Basic Operations Load the new substrate. Place one magnet bar across the roll stopper. Place the substrate on the shaft, and then push it into the press until it presses lightly against the magnetic bar. Turn the knob on the feed shaft clockwise to tighten the substrate.
Page 60 L-4733A/L-4733AW Operation Guide Basic Operations Change the feed direction for the substrate if necessary. Open the maintenance tank cover. Change the feed direction switch. ❏ If the printable surface (a) is the outside of the roll, move the switch down.
Page 61 L-4733A/L-4733AW Operation Guide Basic Operations ❏ If the printable surface (b) is the inside of the roll, move the switch up. Close the maintenance tank cover.
Page 62 L-4733A/L-4733AW Operation Guide Basic Operations Join the new substrate to the previously loaded substrate. Reel out the new substrate onto the workbench. Lay the new substrate on top of the previous substrate on the workbench, and fix them in place with the magnetic bars.
Page 63 L-4733A/L-4733AW Operation Guide Basic Operations Use commercially available splicing tape to join the new substrate and the previous substrate from the reverse side. Important: ❏ The tape used to join the substrates must have a high heat resistance and be as thin as possible, but should not tear easily.
Page 64 L-4733A/L-4733AW Operation Guide Basic Operations Cut off the excess tape on both ends. Important: If any tape protrudes from the edges of the substrate, cut it off cleanly. If any excess is left, it could entangle with the roll inside the press and tear at the joined section.
Page 65: Adjusting The Paper Feed Path Guide
L-4733A/L-4733AW Operation Guide Basic Operations Remove the magnetic bars, and then lower the winding deterioration prevention lever. The Feed Ready switch lamp that has been flashing turns off. Press the Feed Ready switch on the feeding unit to put it into automatic feeding status.
Page 66 L-4733A/L-4733AW Operation Guide Basic Operations When replacing a substrate with the same width Press the Wind Ready switch on the Rewinder to enable automatic winding. Check that the Wind Ready switch lamp is on. Important: If the substrate unwinds or is slack, wrap it firmly around the shaft, and then press the Wind Ready switch.
Page 67 L-4733A/L-4733AW Operation Guide Basic Operations Important: Feed until the joined section passes nip roller D in the Rewinder. If it is not fed, the joined section may tear apart during subsequent operations. Next, prepare to wind up the substrate. “Removing Wound up Substrate” on page 78 When replacing a wide substrate with a narrower substrate Move the felt brake into the press.
Page 68 L-4733A/L-4733AW Operation Guide Basic Operations Loosen the screws for each felt brake (three positions) and move the brakes into the press. Press the Wind Ready switch on the Rewinder to enable automatic winding. Check that the Wind Ready switch lamp is on.
Page 69 L-4733A/L-4733AW Operation Guide Basic Operations Hold down the Feed switch on the press until the joined section passes nip roller D in the Rewinder. a: Nip roller D Important: Feed until the joined section passes nip roller D in the Rewinder. If it is not fed, the joined section may tear apart during subsequent operations.
Page 70 L-4733A/L-4733AW Operation Guide Basic Operations Grip the handle of the connecting section and move the frame of the connecting section to position it so that the indentation at the center of the shaft is at the center of the new substrate.
Page 71 L-4733A/L-4733AW Operation Guide Basic Operations Loosen the screw at the front of the substrate guide, and adjust it to match the width of the substrate. Once you have determined the position, tighten the screw to fix it in place. Align the substrate guide for the Rewinder to the width of the substrate.
Page 72 L-4733A/L-4733AW Operation Guide Basic Operations Turn the brake shaft handle, and then tighten the screw to fix it in place. Next, prepare to wind up the substrate. “Removing Wound up Substrate” on page 78 When replacing a narrow substrate with a wider substrate Before feeding the substrate, position each guide so that they are slightly wider than the width of the substrate.
Page 73 L-4733A/L-4733AW Operation Guide Basic Operations Loosen the screw at the top of the connecting section. Pull the handle on the side of the connecting section forward to make the frame of the connecting section wider than the width of the substrate to be loaded.
Page 74 L-4733A/L-4733AW Operation Guide Basic Operations Loosen the screws at the base of the substrate guide for the Rewinder by half a turn to adjust the position so that it is wider than the substrate to be loaded. Press the Wind Ready switch on the Rewinder to enable automatic winding.
Page 75 L-4733A/L-4733AW Operation Guide Basic Operations Hold down the Feed switch on the press until the joined section passes nip roller D in the Rewinder. a: Nip roller D Grip the handle of the connecting section and move the frame of the connecting section to position it so...
Page 76 L-4733A/L-4733AW Operation Guide Basic Operations Once you have determined the position, tighten the screw at the top of the connecting section to fix it in place. Align the front substrate guide to the width of the substrate. Once you have determined the position, tighten...
Page 77 L-4733A/L-4733AW Operation Guide Basic Operations Align the substrate guide for the Rewinder to the width of the substrate. Loosen the screws by half a turn to adjust to the correct positions, and then tighten the screws to fix them in place.
Page 78: Removing Wound Up Substrate
L-4733A/L-4733AW Operation Guide Basic Operations Next, prepare to wind up the substrate. “Removing Wound up Substrate” on page 78 Removing Wound up Substrate Caution: ❏ When loading or removing roll substrate, be sure to secure the appropriate number of personnel and appropriate transport equipment such as a lifter according to local laws on health and safety.
Page 79 L-4733A/L-4733AW Operation Guide Basic Operations Slacken the substrate between nip roller D and the paper core, and then cut at the position where the substrate can reach the paper core. Wind up the substrate and place some temporary tape on the end of the roll.
Page 80: Performing Initial Winding For The Substrate
L-4733A/L-4733AW Operation Guide Basic Operations Note: When you raise the roll diameter detection lever, the Wind Ready switch lamp flashes to indicate that the lever is raised. Loosen the knob on the rewinder shaft, and then remove the substrate. Next, install a new paper core and perform initial winding for the substrate.
Page 81 L-4733A/L-4733AW Operation Guide Basic Operations Install the paper core on the rewinder shaft. Insert the paper core over the shaft until it is pressing against the press, and then tighten the knob on the rewinder shaft. Important: Tighten the knob on the rewinder shaft firmly so that the paper core does not move.
Page 82 L-4733A/L-4733AW Operation Guide Basic Operations Lower the roll diameter detection lever. When you lower the roll diameter detection lever, the Wind Ready switch lamp that has been flashing turns off. Perform initial winding. Adjust the winding tension with the Set Tension switch on the Rewinder.
Page 83 L-4733A/L-4733AW Operation Guide Basic Operations Substrate Thickness Tension Settings 330mm Wide 80 mm Wide 211 to 250 μm 261 to 320 μm 251 to 290 μm 291 to 320 μm Table of winding tension settings (tested substrates that differ from the standard)
Page 84: Installing The Accessories
L-4733A/L-4733AW Operation Guide Basic Operations Repeat steps (2) and (3) until you have wound 2 to 3 mm of substrate on the paper core. Next, install the curl suppressor and the platen cover sheets. “Installing the Accessories” on page 84 Installing the Accessories Install the curl suppressor and the platen cover sheets.
Page 85 L-4733A/L-4733AW Operation Guide Basic Operations Push the fixing part on the right towards the left to install the curl suppressor.
Page 86 L-4733A/L-4733AW Operation Guide Basic Operations Install the curl suppressor at the front using the same procedure as for the one further inside. When installing the curl suppressor at the front, adjust the curl suppressor so that the curl suppressor is...
Page 87 L-4733A/L-4733AW Operation Guide Basic Operations To position the curl suppressor, loosen the screw on the fixing part. Important: When installing the curl suppressor, adjust the curl suppressor so that it is parallel with the edge of the substrate. If a major adjustment is made on one side only, the curl suppressor could be deformed or broken.
Page 88 L-4733A/L-4733AW Operation Guide Basic Operations If the width of the substrate is less than 320 mm, install the platen cover sheet. Adjust the edge of the sheet to the edge of the curl suppressor (front side), covering the exposed section of the platen.
Page 89 L-4733A/L-4733AW Operation Guide Basic Operations Important: ❏ The tape used to join the substrates must have a high heat resistance and be as thin as possible, but should not tear easily. We recommend using 3M Scotch(R) Magic(TM) Tape 810. ❏ Stick the tape firmly in place so that it does not peel off.
Page 90: Measuring The Width Of The Substrate
L-4733A/L-4733AW Operation Guide Basic Operations Measuring the Width of the Substrate To automatically measure the width of the loaded substrate, press Start. Check the width of the substrate displayed, and then press Finish. If you need to change the substrate width, enter the new width using the key pad, and then press Check Substrate Width.
Page 91: Adjusting The Position Of The Registration Mark Sensor
L-4733A/L-4733AW Operation Guide Basic Operations When Re-registration is set to Apply in the preset, press Continue. This completes this section. For re-registration, continue to adjust the position of the registration mark sensor. “Adjusting the Position of the Registration Mark Sensor” on page 91...
Page 92 L-4733A/L-4733AW Operation Guide Basic Operations Adjust the installation position for the registration mark sensor. Loosen the registration mark sensor fixing screw, and lock it in position over the path for the registration mark on the substrate. Next, go to step 8.
Page 93 L-4733A/L-4733AW Operation Guide Basic Operations Open front cover 2 and check if the sensor for the back side of the substrate is lit red. If there is no red light being emitted, check again if the sensor fiber is connected correctly.
Page 94 L-4733A/L-4733AW Operation Guide Basic Operations Note: Press and then immediately release the Slow Feed switch to feed the substrate 1 mm at a time. This is useful for adjusting the position of the registration marks. When the light intensity flashes red in the amplifiers display, press the ON key on the amplifier.
Page 95 L-4733A/L-4733AW Operation Guide Basic Operations Press the MODE key on the amplifier for two seconds to return to normal detection status. When you have finished adjusting the registration mark sensor, press End Sensor Adjustment. To automatically measure the pitch (interval) between the registration marks on the loaded substrate, press...
Page 96: Switching The Black Ink (White Ink Models Only)
L-4733A/L-4733AW Operation Guide Basic Operations Check the Pitch Corr. value, and then press Finish. Note: When Re-registration is set to Apply in the default preset, you can change the correction value for re-registration from Change Correction Value in the Substrate Settings menu.
Page 97 L-4733A/L-4733AW Operation Guide Basic Operations On the touch screen, press the Maintenance menu - Press Settings. In Press Settings, press Switch Ink - Change. In Switch Uk/Bk, select the black ink you want to use, and then press OK. Press Close.
Page 98: Starting To Print
L-4733A/L-4733AW Operation Guide Basic Operations Starting to Print Check settings on the touch panel and print. This section explains how to start basic printing. Important: Before starting work or printing operations, make sure there are no tools or jigs on the platen.
Page 99 L-4733A/L-4733AW Operation Guide Basic Operations “Job Info. Tab” on page 118 Change copies and the preset from Print Settings in the Job Management menu. Move the press switch from Standby to Ready. An information sound chimes, and then printing starts.
Page 100 L-4733A/L-4733AW Operation Guide Basic Operations Important: Temperature adjustment for the platen and heater are performed before printing starts. ❏ You can start printing before temperature adjustment is complete by pressing Force Start on the Adjusting Temperature screen. However, the adjusted color/quality may not be achieved and the roller may be soiled.
Page 101: Cutting The Print Results
L-4733A/L-4733AW Operation Guide Basic Operations Note: When printing is complete, the press starts printing the next job. If you want to change to standby status, move the press switch from Ready to Standby. This completes this section. Cutting the Print Results When cutting the print results, cut them on the rewinder’s workbench.
Page 102: Pausing And Resuming Printing
L-4733A/L-4733AW Operation Guide Basic Operations Place magnetic bars to secure the substrate, and then cut. Join the substrate that has been cut. To join the substrate, use the same procedure as step 13 in “Joining and Replacing Substrate” on page Press the Wind Ready switch on the Rewinder to enable automatic winding.
Page 103 L-4733A/L-4733AW Operation Guide Basic Operations Press the Pause switch. The press pauses at the end of the current frame. If necessary, you can change settings on the Paused screen. Press Print Settings to change the following settings. ❏ Copies ❏...
Page 104: Canceling A Print Job
L-4733A/L-4733AW Operation Guide Basic Operations Press the Start switch to restart printing. After pressing the Start switch, an information sound chimes and printing restarts. Important: If you change the print settings, printing may not restart immediately after pressing the Start switch. If printing does not restart, press the Start switch again.
Page 105 L-4733A/L-4733AW Operation Guide Basic Operations Press Cancel Job on the Paused screen. Press one of the buttons on the Cancel Job screen. If you want to change the preset for the job currently being printed, select Cancel Printing and then Reprint.
Page 106: Cleaning The Print Head
L-4733A/L-4733AW Operation Guide Basic Operations Cleaning the Print Head The press provides functions to check for clogged nozzles and clean the print head to keep the print head in consistently good condition to ensure the best print quality. Run these functions before printing, or if the print quality declines, such as when there are streaks in the print outs.
Page 107 L-4733A/L-4733AW Operation Guide Basic Operations From the Maintenance menu, press Head Maintenance - Manual Head Maintenance. Press Auto Nozzle Check. Confirm the nozzle check results and perform head cleaning if necessary. If Image Quality Warning is displayed, head cleaning is necessary.
Page 108: Printing A Nozzle Check Pattern
L-4733A/L-4733AW Operation Guide Basic Operations Note: Even if the auto nozzle check determines that nozzles are not clogged, if the print quality does not improve (for example if there is banding in the print outs), use the sub carriage confirmation sheet to specify the sub carriage for which head cleaning is necessary.
Page 109 L-4733A/L-4733AW Operation Guide Basic Operations From the Maintenance menu, press Check Print Quality - Print Nozzle Check Pattern. The nozzle check pattern is printed. After printing a nozzle check pattern, press Operation Status from the menu on the left to return to the Operation Status screen.
Page 110 L-4733A/L-4733AW Operation Guide Basic Operations Check the print results on the platen. If there are any lines missing in the nozzle check pattern, you need to perform head cleaning. Example: Nozzle check patterns for L-4733AW...
Page 111 L-4733A/L-4733AW Operation Guide Basic Operations Example: Nozzle check patterns for L-4733A Left Callout Right Callout Ink Cartridge Color L-4733AW: Y/M/C/Or/Gr/Uk/Wh L-4733A: Y/M/C/Bk/Or/Gr/Uk When nozzles are clogged There are lines that are not printed in In the Op+C patches, some lines are each color patch.
Page 112 L-4733A/L-4733AW Operation Guide Basic Operations This completes this section. Next, go to the Manual Head Maintenance screen and perform head cleaning only. “Performing Manual Head Maintenance” on page 106...
Page 113: Performing An Emergency Stop
L-4733A/L-4733AW Operation Guide Basic Operations Performing an Emergency Stop If you sense any danger while using the press, or if the substrate becomes jammed and so on, press the EMERGENCY STOP switch to stop the press immediately while printing. There are two EMERGENCY STOP switches. Operations stop when one of the switches is pressed, and an error is displayed on the touch panel.
Page 114: Performing Daily Maintenance And Shutting Down The Press
L-4733A/L-4733AW Operation Guide Basic Operations Performing Daily Maintenance and Shutting Down the Press To shutdown the press, you need to perform Daily Maintenance. Important: If you do not start white ink models more than once a week, change the white ink and the storage liquid before shutting down the press to protect the print head.
Page 115 L-4733A/L-4733AW Operation Guide Basic Operations Important: Before shutting down, the press performs an auto nozzle check and, if any nozzles are clogged, the press cleans the nozzles. If clogged nozzles cannot be cleared even after head cleaning, a message is displayed. If the message is displayed, perform head cleaning again.
Page 116: Touch Panel Operations
L-4733A/L-4733AW Operation Guide Touch Panel Operations Touch Panel Operations Touch Panel Screen Configuration The touch panel is composed of three areas. a: Status Area Displays the operating conditions for the press. Item Explanation Key switch status Displays the status of the key switch.
Page 117: B: Menu Area
L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Error An error has occurred. “Notification Methods when an Error Occurs” on page 316 b: Menu Area Displays a menu to switch between the screens. Item Explanation Operation Status Displays the press status.
Page 118: Job Info. Tab
L-4733A/L-4733AW Operation Guide Touch Panel Operations “Settings Tab” on page 120 Job Info. Tab The status of the press is displayed on the Job Info. screen. Item Explanation Printing Job Displays the name of the job currently printing. Total Copies Displays the progress of the current job with the number of completed pages/total number of pages.
Page 119 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Buttons Force Start This button is displayed when the press is in Adjusting Temperature status. You can use this to start printing before temperature ad‐ justment is complete. However, the adjusted color/quali‐...
Page 120: Settings Tab
L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Ink Levels Displays the remaining amount of ink for each ink cartridge. Displays an X mark when the amount of ink remaining falls below the minimum value. Heater/Fan On/Off Switches the heater and fan between On and Off.
Page 121 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Feed Corr. Value Set the correction value for the gap for frame feeding while printing within a range of -2.000 to 2.000 inch (-50.80 to 50.80 mm). Press Change to enter the value to correct the differences in frame feeding. Set whether or not to apply a correction value proportionate to the actual print length.
Page 122: Maintenance Screen
L-4733A/L-4733AW Operation Guide Touch Panel Operations Maintenance Screen On the Maintenance screen, you can perform various kinds of maintenance functions such as print quality confirmation, head maintenance, press settings and so on. Item Explanation Check Print Quality Displays the screen for printing various check patterns to confirm print quality.
Page 123: Check Print Quality
L-4733A/L-4733AW Operation Guide Touch Panel Operations Check Print Quality On this screen, you can print various check patterns to confirm print quality. Item Explanation Print Nozzle Check Pattern You can print a check pattern to check for clogged nozzles. Clean the head according to the printed results.
Page 124: Head Maintenance
L-4733A/L-4733AW Operation Guide Touch Panel Operations Head Maintenance On this screen, you can perform head maintenance functions. Item Explanation Auto Head Maintenance In Auto Head Maintenance, the press checks for clogging in the nozzles, and if clogging is detected it performs automatic cleaning.
Page 125: Press Settings
L-4733A/L-4733AW Operation Guide Touch Panel Operations Press Settings On this screen, you can make various press settings. Item Explanation Language Change the display language. Temperature Units Select the unit to display the temperature. Correction Value Units Select the unit to display the correction value.
Page 126 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Rewinder Shaft Operation Set the Rewinder winding shaft operations when connecting an in-line post processing device for the Rewinder. The substrate is wound by the Rewinder. Stops the Rewinder winding shaft from operating. Select this to wind the substrate using a processing machine after connecting in-line when not winding the substrate using the Rewinder.
Page 127 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Printed Job Management Sets the maximum limit and display order for printed jobs saved on the Printed tab on the Job Management screen. Maximum Sets the maximum limit for jobs displayed on the Printed tab within a Number of Saved range of 20 to 100.
Page 128: Detailed Settings
L-4733A/L-4733AW Operation Guide Touch Panel Operations Detailed Settings On this screen, you can perform advanced functions such as backing up touch panel settings. Item Explanation System Backup Backup the contents of the current system settings. Normally, you do not need to perform any operations as backup is performed automatically when the press is shutdown.
Page 129: Preset Management Screen
L-4733A/L-4733AW Operation Guide Touch Panel Operations “Maintenance” on page 235 Preset Management Screen Some presets are registered to the press in advance. Also, you can create presets allowing you to make optional setting changes. This section explains the Preset Management screen. See the following for more information on creating and editing presets.
Page 130: Preset Editing Screen
L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation All/Search When All is selected, all presets are displayed as a list. When Search is selected, you can enter search conditions to narrow the presets and then display them as a list.
Page 131 L-4733A/L-4733AW Operation Guide Touch Panel Operations Depending on the print application software, some items cannot be set. Item Explanation Select the ID number for the preset. Preset Name Enter the preset name. Comment Enter text to explain the content of the preset.
Page 132 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Custom Pitch Setting Set the column pitch (a) within a range of 0.100 to 36.000 inch (2.54 to 914.40 mm) when copying a column. You can switch the units between inch or mm.
Page 133 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Pause (After Print) Set whether or not to pause after printing the final frame without feeding the frame. Do Not Apply (default Printing finishes without pausing. value) Apply The final frame stops on the platen allowing you to check the print results.
Page 134 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Feed Substrate at Start Head Set whether or not to feed a print section beyond the heater when starting automatic Maintenance head maintenance during printing. Do Not Feed (default The substrate is not fed.
Page 135 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Frame Feed Correction Value by Set the correction value for the gap between frames within a range of -36.000 to 2.000 inch (-914.40 to 50.80 mm). Set a negative (-) correction value, if you want to narrow the width between frames. Set a positive (+) correction value to expand.
Page 136 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Print Registration Mark at Start of When performing versioning printing, set to insert a registration mark at the start of the print job for jobs with the same pitch. When setting the number of columns, select Use the Number of Columns Set and then set the number of columns in Set Registration Mark Column Number.
Page 137 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Position of Registration Marks Set the position at which registration marks should be entered on the print data. When printing at the start of the job, insert registration marks in the same position.
Page 138 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Print Preset Settings Sets whether to print preset values and Print Info. at the end of a print job. You can also make settings you want to print and the order in which they are printed.
Page 139 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Manual Color Correction This can only be used when printing from the printer driver. No Manual Color Does not manually correct color. Correction (default value) Use Manual Color Manually corrects color. You can set each correction Correction value.
Page 140: Print Info. Screen
L-4733A/L-4733AW Operation Guide Touch Panel Operations Print Info. Screen Some print information items are registered to the press in advance. You can also change optional settings and create print information. This section explains the Print Info. screen. See the following more information on creating and editing print information.
Page 141: Print Info. Editing Screen
L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Delete Delete the Print Info. Select the Print Info. you want to delete from the list, and then press Delete. You cannot delete pre-registered Print Info. (BXXX). Auto Adjustment Display the Auto Adjust screen.
Page 142 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Select the ID number for the Print Info. Pre-registered Print Info. is displayed as BXXX, and Print Info. registered by the user is displayed as CXXX. When editing Print Info. set as the preset, the ID cannot be changed.
Page 143 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation White Printing (for white ink Select whether or not to perform white printing. models only) Do Not Apply (default val‐ Do not use white printing. Surface White Print using white ink first, and then print over that with color ink.
Page 144 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Heater Sets the heater to on or off. Turn off the heater. On (default value) Turns on the heater. Heater Temp. ˚ Set the heater temperature within a range of 50.0 to 75.0˚C (122.0 to 167.0 Default value: 75.0˚C...
Page 145 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation White Printing Pause Time (for Set the time until printing starts between color ink and white ink within a range of 0.00 white ink models only) to 30.00 seconds. You can improve the print quality by adjusting the time.
Page 146 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Print Frame Edge Mark Set whether or not to print a mark to check the gap in the print position between frames. See the following for details on checking the amount of the gap.
Page 147 L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Registration Mark Pitch Set the registration mark gap (a). Set the Registration Mark Pitch within a range of 0.394 to 36.000inch (10.00 to 914.40mm). You can switch the units between inch or mm.
Page 148: Job Management Screen
L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Verified ColorBase Flag Displays the applied ColorBase inspection status. Default value: Unverified Uneven Color Adjustment Set whether or not to apply the uneven color adjustment value. Do Not Apply (default val‐ Does not apply the uneven color adjustment value.
Page 149: Waiting Tab
L-4733A/L-4733AW Operation Guide Touch Panel Operations Waiting tab You can manage jobs waiting to be printed on the Waiting screen. Item Explanation Print Job Queue Displays a list of print jobs. Move the cursor over a job ID to display all of the job names.
Page 150: Printed Tab
L-4733A/L-4733AW Operation Guide Touch Panel Operations Printed Tab You can manage printed jobs on the Printed screen. Item Explanation Print Job Queue Displays printed jobs. Move the cursor over a job ID to display all of the job names. You can change the display order (ascending/descending order for print date/time) and the number displayed in Printed Job Management from Maintenance - Press Settings.
Page 151: Print Settings/Reprint Settings Screens
L-4733A/L-4733AW Operation Guide Touch Panel Operations Print Settings/Reprint Settings Screens On the Print Settings and Reprint Settings screens, you can change print settings. Item Explanation Basic Settings Preset Change the preset. Copies Change the number of copies. Collate Set whether or not to collate output prints.
Page 152: Substrate Settings Screen
L-4733A/L-4733AW Operation Guide Touch Panel Operations Item Explanation Adjust Print Center Positioning Corr. Value If the print position shifts, set the vertical correction value for Position the gap between the substrate. The correction value set here is applied along with the Center Positioning Corr.
Page 153 L-4733A/L-4733AW Operation Guide Touch Panel Operations Note: ❏ Displays the latest contents for the default preset on the screen. ❏ On/Off for Change Correction Value changes according to the default preset contents at the time of the substrate replacement.
Page 154: Various Print Settings
L-4733A/L-4733AW Operation Guide Various Print Settings Various Print Settings Improving Abrasion Resistance (Over Print) By applying over print liquid to printouts, you can improve the abrasion resistance. Over print liquid is applied after printing the label design for each frame. The over print application setting is performed in the preset.
Page 155: Printing Over The Base Printing On The Substrate (Re-Registration)
L-4733A/L-4733AW Operation Guide Various Print Settings Printing over the Base Printing on the Substrate (Re-registration) When a registration mark is positioned in advance on the substrate on which the base is printed, the press can continue to print the data by detecting the registration mark.
Page 156: Print Result
L-4733A/L-4733AW Operation Guide Various Print Settings Print Result a: 1 column This section explains the registration mark specifications, the necessary settings, and the adjustment methods for the base substrate for re-registration. “Specifications for Registration Marks Positioned on the Base Substrate” on page 157 “Setting Procedure”...
Page 157: Specifications For Registration Marks Positioned On The Base Substrate
L-4733A/L-4733AW Operation Guide Various Print Settings Specifications for Registration Marks Positioned on the Base Substrate Size/shape/color Create the following registration marks. ❏ Square or rectangle of 5 × 5 mm or larger ❏ Black or white The lightness of the registration mark must be sufficiently different from the base color of the substrate and...
Page 158: Setting Procedure
L-4733A/L-4733AW Operation Guide Various Print Settings Setting Procedure Create of re-registration printing for print (imposition) data. Create one column of re-registration printing for print (imposition) data for one registration mark on the substrate on which the base is printed. Set re-registration information in the Print Info. for a preset suitable to the type of substrate loaded.
Page 159: Fine Tuning The Print Position
L-4733A/L-4733AW Operation Guide Various Print Settings Print with the created preset. “Starting to Print” on page 98 This completes this section. Fine Tuning the Print Position In re-registration printing, the label designs printed over the base print may move out of position. If it moves out of position, first correct the starting print position (vertical/horizontal offset values).
Page 160 L-4733A/L-4733AW Operation Guide Various Print Settings Measure the amount of misalignment between the base and label design at the column closest to the paper eject point on the platen (first column on the page), and set Reg. Mark V-Offset Corr. Value and Reg.
Page 161 L-4733A/L-4733AW Operation Guide Various Print Settings Restart printing. “Starting to Print” on page 98 Repeat steps 1 to 5 if necessary to adjust the print start position. This completes this section. Next, correct the registration mark pitch. Correcting the registration mark pitch Although the registration mark pitch (gap) is corrected automatically, use the following procedure when fine tuning is necessary.
Page 162 L-4733A/L-4733AW Operation Guide Various Print Settings Measure the shifting distance of the registration mark on the platen. Note: If the pitch between one of the columns falls below the minimum value (10 mm) after applying the registration mark pitch correction value, the minimum value is used for printing.
Page 163 L-4733A/L-4733AW Operation Guide Various Print Settings Set the shifting distance measured in step 4 in Pitch Corr. Value. Repeat steps 1 to 8 if necessary to correct the registration mark pitch. This completes this section.
Page 164: Printing On Transparent Substrate (Sensor For Transparent Substrate)
L-4733A/L-4733AW Operation Guide Various Print Settings Printing on Transparent Substrate (Sensor for Transparent Substrate) When printing on substrates that have transparent or semi-transparent faces and separators, use the sensor for transparent substrates. After printing on the transparent substrate, switch the sensor.
Page 165 L-4733A/L-4733AW Operation Guide Various Print Settings Open front cover 2 on the press. Flip the switch to the lower position (2) to change to the sensor for transparent substrate. Hold down the Feed switch on the press to feed the substrate until the conveyor stabilizes.
Page 166: After Printing On Transparent Substrate
L-4733A/L-4733AW Operation Guide Various Print Settings After Printing on Transparent Substrate Flip the switch to the upper position (1) to change to the optical sensor. Note: ❏ When printing on anything except for transparent substrate, change to the optical sensor.
Page 167 L-4733A/L-4733AW Operation Guide Various Print Settings a: White band printed as the base b: Registration marks c: Detection position...
Page 168: Changing Print Settings For Multiple Jobs As A Batch
L-4733A/L-4733AW Operation Guide Various Print Settings Changing Print Settings for Multiple Jobs as a Batch You can batch together multiple jobs that are standing by and change the print settings for them all. This is useful when you want to print jobs with the same print settings continuously, such as versioning print jobs, or when performing final printing after running a number of test jobs one at a time.
Page 169 L-4733A/L-4733AW Operation Guide Various Print Settings Change the item setting to change all jobs as a batch. The items that you can change are described below. ❏ Preset ❏ Copies ❏ Platen Temp. ❏ Heater Temp. Note: When the Print Settings screen is displayed while multiple jobs are selected, items that have different settings in different print jobs are displayed as "-"...
Page 170: Correcting Differences In Frame Feeding
L-4733A/L-4733AW Operation Guide Various Print Settings Correcting differences in frame feeding By printing frame edge marks on the label design, you can check if anything is out of position between frames while printing. If it is out of position, you can make adjustments from the Settings tab on the Operation Status screen while printing.
Page 171 L-4733A/L-4733AW Operation Guide Various Print Settings Check the frame edge marks at the border between the frames on the Rewinder's workbench while printing frames. No skew Vertical lines overlap Skew Marks do not overlap Marks overlap Vertical skew occurred If the frame edge marks are out of position, measure the amount of gap, and then enter it in Feed Corr.
Page 172: Correcting Vertical Skew Between Frames
L-4733A/L-4733AW Operation Guide Various Print Settings Correcting Vertical Skew Between Frames If the substrate on the platen is fed diagonally when replacing a wide substrate with a narrow substrate, the print results may skew vertically between frames. <Example of skew>...
Page 173 L-4733A/L-4733AW Operation Guide Various Print Settings The following outlines the procedures. Work/Operation Contents Press (Touch panel) Print the adjustment chart. Rewinder (workbench) Check the vertical gap between frames. Rewinder (workbench) Calculate the skew roller adjustment value. Press (right-side of platen)
Page 174: Calculating The Adjustment Value Using The Adjustment Chart
L-4733A/L-4733AW Operation Guide Various Print Settings Calculating the adjustment value using the adjustment chart This section explains the procedure for calculating the adjustment value for the skew roller using the same adjustment chart as the Frame Feed Correction Value by Substrate.
Page 175: Measuring The Vertical Skew Amount For The Frame Edge Mark And Calculating The Adjustment Amount
L-4733A/L-4733AW Operation Guide Various Print Settings This completes this section. Next, adjust the tilt for the skew rollers. “Adjusting the tilt for the skew rollers” on page 176 Measuring the vertical skew amount for the frame edge mark and calculating the adjustment amount Set frame edge mark information in the Print Info.
Page 176: Adjusting The Tilt For The Skew Rollers
L-4733A/L-4733AW Operation Guide Various Print Settings Adjusting the tilt for the skew rollers Open top cover 2 on the press. Caution: When opening the top covers on the press, push them up firmly so that the covers do not shut.
Page 177 L-4733A/L-4733AW Operation Guide Various Print Settings Loosen the levers at the back and the front. Back Front For every 0.1 mm calculated for skew roller adjustment, rotate the micrometer once. The direction of micrometer rotation differs depending on the skew. See the following table.
Page 178 L-4733A/L-4733AW Operation Guide Various Print Settings Counterclockwise When the tip of the micrometer is touching the roller shaft, tighten the lever at the front. Tighten the lever at the back. Close top cover 2 on the press. Caution: When closing the top covers on the press, close them slowly while holding the handle on the cover.
Page 179 L-4733A/L-4733AW Operation Guide Various Print Settings Note: If the substrate serial number and the substrate width are the same, you can reuse the micrometer adjustment value. We recommend making a note of the micrometer scale number for each substrate serial number and substrate width.
Page 180: Checking The Status Of The Press By Email
L-4733A/L-4733AW Operation Guide Various Print Settings Checking the status of the press by email The press comes with a feature that allows you to send a notification email from the press when printing starts, finishes, or when an error occurs, as well as when it is time to perform maintenance and so on. This is useful if you are away from the press, such as when operating multiple machines, as you can check the status of the press and quickly handle any issues that occur.
Page 181: Registering New Email Recipients
L-4733A/L-4733AW Operation Guide Various Print Settings Set each item. Item Explanation Sender's Email Address Enter the email address displayed to the sender. Sender's Name (Press Name) Enter the name displayed to the sender of the email. When receiving emails from multiple presses, we recommend using names that allow you to easily identify which press the email has been sent from.
Page 182 L-4733A/L-4733AW Operation Guide Various Print Settings On the Press Settings screen, press Recipient Settings from Delivering Emails. On the Recipient Settings screen, press New. Enter the email recipient's name and email address, select whether to receive the email using the To address...
Page 183: Changing Or Deleting Registered Recipient Settings
L-4733A/L-4733AW Operation Guide Various Print Settings Press Send Test Email, and then check if you can receive the email correctly using the settings in step 4. Select the content of the notification you want to receive. Press OK. You are returned to the Recipient Settings screen.
Page 184: Temporarily Pausing/Resuming Delivering Emails
L-4733A/L-4733AW Operation Guide Various Print Settings Select the recipients on the Recipient Settings screen, and then press Edit or Delete. When you press Delete, press OK on the confirmation screen displayed. Next, go to step 6. When you press Edit, edit the settings for the items you want to change.
Page 185 L-4733A/L-4733AW Operation Guide Various Print Settings Select the recipients from the recipients list, and then press Deliver or Stop to switch the delivery status. Press OK. This completes this section.
Page 186: Density Control
L-4733A/L-4733AW Operation Guide Various Print Settings Density Control There are two types of Density Control methods for presets. Density Control screen Advanced Density Control screen Since the print results differ between these two settings, see the following table to select a setting and adjust the density to suit the print job.
Page 187: Printing Registration Marks At Start Of Job
L-4733A/L-4733AW Operation Guide Various Print Settings Printing Registration Marks at Start of Job The press comes with a feature to cut the section where the registration mark is entered on the print data and print only the section at the start of the print job.
Page 188 L-4733A/L-4733AW Operation Guide Various Print Settings Print data for job B: Settings for preset items: Item Value Print Registration Mark at Start of Job Use the Number of Columns Set Set Registration Mark Column Number Width of Reg. Mark Section for Clipping...
Page 189: Printing Repeatedly In One Job (Group Printing)
L-4733A/L-4733AW Operation Guide Various Print Settings Printing Repeatedly in One Job (Group Printing) Group printing allows you to print multiple jobs repeatedly. a: 1st copy of a grouped job b: 2nd copy of a grouped job Note: ❏ You cannot group the following jobs.
Page 190 L-4733A/L-4733AW Operation Guide Various Print Settings Display the Waiting tab on the Job Management screen, select the jobs you want to group, and then press Print Settings. On the Print Settings screen, set the Presets and Copies, and then press OK.
Page 191 L-4733A/L-4733AW Operation Guide Various Print Settings Select the first job you want to group from the job list, and then press Group Settings. The Group Settings screen is displayed.
Page 192 L-4733A/L-4733AW Operation Guide Various Print Settings Note: Jobs that cannot be grouped are displayed in a different color (red). If you select a job that cannot be grouped and press Details, the icon is displayed for preset items that do not match the grouping conditions.
Page 193: Releasing Grouped Jobs
L-4733A/L-4733AW Operation Guide Various Print Settings Press Basic Operations to return to the Basic Operations menu, select the grouped job, and then press Print Settings. On the Print Settings screen, set the number of copies that you want to print repeatedly in Copies, and then press OK.
Page 194: Using Group Printing To Print Colors After Reverse White Printing
L-4733A/L-4733AW Operation Guide Various Print Settings Note: To check and then release a grouped job, press Group Settings to check the job on the Group Settings screen, and then release it. Using group printing to print colors after reverse white printing After printing a job, you can print the next job over it by making settings in the preset for the overlapping job to prevent frames from being sent.
Page 195 L-4733A/L-4733AW Operation Guide Various Print Settings Item Value Pause (After Print) Do Not Apply Result Check Do Not Apply See the following pages for more information on creating presets and Print Info. “Creating and Editing Presets” on page 50 “Creating and Editing Print Info.” on page 49 Send all reverse white print and color print data from the print application.
Page 196: Printing Jobs With The Same Preset As One Job (Combining Jobs)
L-4733A/L-4733AW Operation Guide Various Print Settings Printing Jobs with the Same Preset as One Job (Combining Jobs) Combining jobs allows you to print the same preset jobs as one job. This is useful when you want to compare multiple print data that was corrected beforehand using RIP software, or when you want to perform test printing for multiple jobs at the same time.
Page 197 L-4733A/L-4733AW Operation Guide Various Print Settings Press Other Operations. Select the first job you want to combine from the job list, and then press Job Combining Settings. The Job Combining Settings screen is displayed.
Page 198 L-4733A/L-4733AW Operation Guide Various Print Settings Note: Jobs that cannot be combined are displayed in a different color (red). If you select a job that cannot be combined and press Details, the icon is displayed for settings that do not match the combining conditions.
Page 199 L-4733A/L-4733AW Operation Guide Various Print Settings Combined jobs are displayed on the Waiting tab with the job ID "Combined Job". Note: ❏ When combining the jobs, the number of Copies set for each job is reset, a check mark is added to Collate and the number becomes "1".
Page 200: Releasing Combined Jobs
L-4733A/L-4733AW Operation Guide Various Print Settings After printing is finished, combined jobs are un-combined and displayed on the Printed tab using the settings before they were combined. This completes this section. Releasing Combined Jobs Select the combined jobs that you want to release from the Waiting tab on the Job Management screen, and then press Release.
Page 201: Printing On Substrates That Contain Splices
L-4733A/L-4733AW Operation Guide Various Print Settings Printing on Substrates that Contain Splices When printing on substrates that contain splices, you can pause or extend the drying time by enabling the splice detection function. You can enable the splice detection function in Maintenance menu - Press Settings - Splice Detect Setting.
Page 202 L-4733A/L-4733AW Operation Guide Various Print Settings Move the lock lever forward to release the lock, and then pull out the sensor fiber used to detect the printable surface. Insert the sensor fiber for detecting the reverse printable surface into the sensor amplifier, and then move the lock lever back to lock it in place.
Page 203: Checking The Color Density Of The Press
L-4733A/L-4733AW Operation Guide Various Print Settings Check that the sensor for the reverse printable surface is emitting white light. If white light is not emitted, return to step 1 and check the connection again. This completes this section. Checking the Color Density of the Press Print a check pattern to check the color density, and check if there are any variations in the color density in the solidly printed area.
Page 204: Sharing Print Settings Across Multiple Press Units
L-4733A/L-4733AW Operation Guide Various Print Settings After printing a check pattern, press the Operation Status menu to return to the Operation Status screen. When printing is complete, feed the print results to the rewinder's workbench for cutting. “Cutting the Print Results” on page 101 Check the pattern that you have cut out.
Page 205: Exporting And Importing Print Info
L-4733A/L-4733AW Operation Guide Various Print Settings Exporting and Importing Print Info. You can export Print Info. to be used with another press, or import Print Info. created on another press. Press Preset Management from the menu on the left on the touch panel.
Page 206: Protecting Print Settings From Accidental Operations
L-4733A/L-4733AW Operation Guide Various Print Settings Select the Print Info. you want to use as the source from the list, and then press Copy Correction Value. Select Copy Contents, select the Print Info. for Copy Target from the copy target list, and then press Execute.
Page 207 L-4733A/L-4733AW Operation Guide Various Print Settings Preset Editing Screen Print Info. Editing Screen...
Page 208: Performing Color Matching Across Multiple Press Units (Colorbase)
When printing using Epson's ICC profile Create a ColorBase correction value file and apply it to the press. By bringing it closer to the status in which Epson created the ICC profile, the print results are closer to the target color.
Page 209: Adjustment Method
Note: ❏ When you want to match the standard value supplied by Epson, use a substrate that has been tested by Epson. ❏ When creating an original ICC profile, you can create a standard value in ColorBase. Read the created standard value and create the correction value.
Page 210: Preparing The Calibration Support Tool
L-4733A/L-4733AW Operation Guide Various Print Settings Preparing the Calibration Support Tool The Calibration Support Tool is software for performing ColorBase correction. This can only be used with Windows. Summary Adjustment Value Calculation and ColorBase Color Measurement Chart Create the correction value and perform color measurement of the chart by reading the parameter file for...
Page 211: Creating The Correction Value (Create Correction Value/Verify Correction Accuracy)
L-4733A/L-4733AW Operation Guide Various Print Settings Copy ColorBase Standard Value Copy the standard value data to the press. Installing/Uninstalling Installing Double-click the installer, and follow the on-screen instructions to install. Uninstalling From the Control Panel, click Programs - Uninstall a program.
Page 212 L-4733A/L-4733AW Operation Guide Various Print Settings Press (Touch panel) Printing the correction chart and writing the parameters On the touch panel, select the standard value, and then print the adjustment chart and write the parameters. User's Computer Color measurement for the correction chart Perform color measurement for the printed chart using the user's computer.
Page 213 L-4733A/L-4733AW Operation Guide Various Print Settings Select the Print Info. to which you want to register an adjustment value from the list, and then press Auto Adjustment. You cannot register to pre-registered Print Info. (BXXX). Select newly created Print Info. (CXXX).
Page 214 Adjustment Value Calculation and ColorBase Color Measurement Chart. To start the Calibration Support Tool, click Start - All Programs - Epson Software - SurePress - L-XXXX (where L-XXXX is the name of the press being used) - Calibration Support Tool.
Page 215 L-4733A/L-4733AW Operation Guide Various Print Settings Select Via Shared Folder, enter the IP address or the host name for the press, and then click Select. Select the parameter file, and then click OK. Prepare the chart and the color measurement device, and then click Start. Click Start again on the next screen.
Page 216 L-4733A/L-4733AW Operation Guide Various Print Settings Check the estimate at the bottom left of the screen. Color differences are displayed for the following colors. Refer to this to determine whether or not to perform an inspection. Estimate number is less than 1.15: Green Estimate number is more than 1.15 and less than 3: Yellow...
Page 217 L-4733A/L-4733AW Operation Guide Various Print Settings Set Temperature/Humidity, and then press Print and Write. The verification chart is printed. Note: Air temperature and humidity measurements are taken to record environmental conditions at the time of verification. This does not influence the contents of the verification.
Page 218 L-4733A/L-4733AW Operation Guide Various Print Settings Prepare the chart and the color measurement device, and then click Start. Click Start again on the next screen. Follow the on-screen instructions to continue. Return to the touch panel and check that the color measurement results file is displayed, and then press Verify Corr.
Page 219: Create Standard Value (Create Gradient Value/Create Standard Value)
L-4733A/L-4733AW Operation Guide Various Print Settings Create standard value (create gradient value/create standard value) Create a standard value by measuring the color characteristics of the press to bring the colors closer. Work/Operation Contents Press (Touch panel) Printing the chart for creating the gradient value and writing the parameters On the touch panel, print the chart for creating the gradient value and write the parameters.
Page 220 Adjustment Value Calculation and ColorBase Color Measurement Chart. To start the Calibration Support Tool, click Start - All Programs - Epson Software - SurePress - L-XXXX (where L-XXXX is the name of the press being used) - Calibration Support Tool.
Page 221 L-4733A/L-4733AW Operation Guide Various Print Settings Prepare the chart and the color measurement device, and then click Start. Click Start again on the next screen. Follow the on-screen instructions to continue. Return to the touch panel and check that the color measurement results file is displayed, and then press Generate Gradient Value.
Page 222 L-4733A/L-4733AW Operation Guide Various Print Settings Set Temperature/Humidity, and then press Print and Write. The standard value creation chart is printed. Note: Air temperature and humidity measurements are taken to record environmental conditions at the time of standard value creation. This does not influence the contents of the standard value.
Page 223 L-4733A/L-4733AW Operation Guide Various Print Settings Return to the touch panel and check that the color measurement results file is displayed, and then press Generate Standard Value. The standard value is created based on the color measurement results file. Write to press.
Page 224: Copying The Standard Value
Various Print Settings Copying the Standard Value By using the Calibration Support Tool, you can copy standard value data supplied by Epson to the press, and copy created standard value data to other press units. Start the Calibration Support Tool, and then click Copy ColorBase Standard Value.
Page 225: Printing A Check Pattern To Check The Color
L-4733A/L-4733AW Operation Guide Various Print Settings Select the standard value data you want to copy from the list, and then click Copy. You can select multiple items of standard value data. Note: To delete, select the standard value data you want to delete, and then click Delete.
Page 226 L-4733A/L-4733AW Operation Guide Various Print Settings Use a color measurement device to check the check pattern that you have cut out. Perform color calibration again if corrections are necessary. This completes this section.
Page 227: Replacing Ink Cartridges
L-4733A/L-4733AW Operation Guide Replacing Ink Cartridges Replacing Ink Cartridges Notes on handling ink cartridges Caution: ❏ Do not disassemble ink cartridges. If it is disassembled, ink could get in your eyes or on your skin. ❏ Except as explained in this manual, do not shake or swing the ink cartridge too vigorously;...
Page 228: Status Of The Ink Cartridge Arrangement And Lamps
L-4733A/L-4733AW Operation Guide Replacing Ink Cartridges Status of the Ink Cartridge Arrangement and Lamps Ink cartridges are installed in the following arrangement. The ink cartridge arrangement and the arrangement of the lamps above them are the same. Ink Cartridge Arrangement...
Page 229: Lamp Indications
L-4733A/L-4733AW Operation Guide Replacing Ink Cartridges Note: You can check the ink arrangement from the printer driver's status screen, or the ink levels displayed on the touch panel screen. Lamp Indications The lamps indicate the status of the ink cartridges.
Page 230: Replacing Ink Cartridges
L-4733A/L-4733AW Operation Guide Replacing Ink Cartridges Replacing Ink Cartridges Prepare a new ink cartridge. Press the lock release button on the ink cartridge cover. All ink cartridge lamps flash. Wait until the flashing stops and the lock is released. Important: Do not force open the ink cartridge cover while the lamps are flashing.
Page 231 L-4733A/L-4733AW Operation Guide Replacing Ink Cartridges Remove the new ink cartridge from its bag, and shake it back and forth horizontally in 5 cm movements as shown in the illustration. Following the times shown in the table below, shake the cartridge with the right side up, then turn it over and shake it again.
Page 232: Procedure For Mixing The White Ink Cartridge
L-4733A/L-4733AW Operation Guide Replacing Ink Cartridges Procedure for Mixing the White Ink Cartridge To prevent sedimentation in white ink models, mix the white ink in the ink cartridge when the press starts. A message is displayed on the touch panel when you need to mix the white ink cartridge.
Page 233: If You Do Not Use White Ink More Than Once A Week
L-4733A/L-4733AW Operation Guide Replacing Ink Cartridges Shake the white ink cartridge back and forth horizontally in 5 cm movements as shown in the illustration. 15 times each within 5 seconds. If you do not shake the ink cartridges, the ink sediment sinks to the bottom and print quality may decline.
Page 234 L-4733A/L-4733AW Operation Guide Replacing Ink Cartridges In Press Settings, press Switch Ink - Change. In Switch Wh/St, select St, and then press OK.
Page 235: Maintenance
L-4733A/L-4733AW Operation Guide Maintenance Maintenance Before Starting Maintenance Any ink that accumulates around the print head, or glue and dust on the sensors or the channel, will affect the print results. Perform regular maintenance of the press to ensure the best print quality.
Page 236: List Of Maintenance Items
L-4733A/L-4733AW Operation Guide Maintenance Inspection Mode Name Explanation Normal The carriage waits in the capping position on the left side of the press. The status is the same as when standing by. You can clean the filter and dispose of the waste fluid in the maintenance tank.
Page 237 L-4733A/L-4733AW Operation Guide Maintenance Accessories Item Name Purpose Cleaning cap cleaning jig Cleaning the cleaning cap Cleaning stick jig/swab material Cleaning the cover heads, carriage plate, cleaning caps, moisture caps, and the auto nozzle check plates Wiper cleaning jig Cleaning the wiper...
Page 238 L-4733A/L-4733AW Operation Guide Maintenance Item Name Purpose Wiper pad holders (×30)/Wiper pads Auto cleaning the cover head, replacing the wiper pads Flushing unit (×2) Cleaning the flushing units Items provided by users Item Name Purpose Polyester/nylon knit woven fabric (without fluff )
Page 239: Notes
L-4733A/L-4733AW Operation Guide Maintenance Item Name Purpose Container (for ink cleaning alcohol) Container for the ink cleaning alcohol used for cleaning Container (for purified water) Container for the purified water used for cleaning Plastic gloves Wear when cleaning Protective glasses...
Page 240: Clean Once A Week
L-4733A/L-4733AW Operation Guide Maintenance <Inspection Mode: Motor Drive Off> Heater “Heater/Rewinder Section” on page 256 Rewinder section Platen “Platen/Platen Left Roller” on page 267 Curl suppressors “Curl Suppressors” on page 270 <Inspection Mode: Shift Carriage> Wipers “Wipers” on page 285 Flushing unit “Flushing Unit”...
Page 241: Clean When Necessary
L-4733A/L-4733AW Operation Guide Maintenance <Inspection Mode: Shift Carriage> Cleaning Caps “Cleaning Caps” on page 288 Moisturizer Caps “Moisturizer Caps” on page 293 Auto Nozzle Check Plates “Auto Nozzle Check Plates” on page 295 Clean when necessary When cleaning is necessary, a message is displayed on the touch panel or on the inspection item itself.
Page 242: Inspection Frequency For High Capacity Usage
L-4733A/L-4733AW Operation Guide Maintenance Inspection Frequency for High Capacity Usage If the press is being operated at a high capacity, you should inspect it more frequently. See the following table. As a guide to what constitutes high capacity usage, we have assumed three shifts in 24 hours represents continuous operation.
Page 243: Heater/Rewinder Section
L-4733A/L-4733AW Operation Guide Maintenance Heater/Rewinder Section (Illustratio Inspection Points Inspection Frequency Procedure Heater Outlet Every shift “Heater/Rewinder Section” on page 256 Free Roller E Free Roller F Free Roller G Free Roller H Drive Roller C Nip Roller C Dancer Roller C...
Page 244: Ink System
L-4733A/L-4733AW Operation Guide Maintenance Ink System Inspection Points Inspection Frequency Procedure (Illustration) Cover Heads When a message is displayed “Cover Head (Manual Cleaning)” on page 275 Carriage Plate When a message is displayed “Carriage Plate” on page 280 Wiper Every shift “Wipers”...
Page 245: List Of Inspection Items
L-4733A/L-4733AW Operation Guide Maintenance List of Inspection Items The inspection points on this press are shown below. Feeding Unit Inspection Points Procedure Free Roller A “Feeding Unit” on page 248 Workbench A Drive Roller A Nip Roller A Dancer Roller A...
Page 246 L-4733A/L-4733AW Operation Guide Maintenance Heater / Rewinder section Inspection Points Procedure Heater Outlet “Heater/Rewinder Section” on page 256 Free Roller E Free Roller F Free Roller G Free Roller H Drive Roller C Nip Roller C Dancer Roller C Substrate Guide...
Page 247 L-4733A/L-4733AW Operation Guide Maintenance Platen Unit / Ink System / Foreign Substance Sensor Platen Unit Inspection Points Procedure Platen Left Roller “Platen/Platen Left Roller” on page 267 Platen “Platen/Platen Left Roller” on page 267 “Curl Suppressors” on page 270 Curl Suppressor * When using substrate to which glue sticks easily, perform additional inspections and cleaning between print jobs.
Page 248: Feeding Unit
L-4733A/L-4733AW Operation Guide Maintenance Foreign Substance Sensor Inspection Points Procedure Foreign Substance Sensor “Foreign Substance Sensor” on page 308 Filter / Maintenance Tank Inspection Points Procedure Ceiling Fan Intake Filter “Ceiling Fan Intake Filters” on page 311 Heater Intake Filter “Heater Intake Filter”...
Page 249 L-4733A/L-4733AW Operation Guide Maintenance Important: ❏ When cleaning the surface of the roller, do not use hard materials such as tools. If the roller is damaged, the substrate may not be fed to the correct position, and color irregularities could be caused.
Page 250 L-4733A/L-4733AW Operation Guide Maintenance Operate the nip lever to release nip roller A so there is slack in the substrate. See the following figure for the procedure on how to clean the rollers in the feed section and the workbench.
Page 251 L-4733A/L-4733AW Operation Guide Maintenance Cleaning Area Workbench A Drive Roller A Nip Roller A Dancer Roller A...
Page 252 L-4733A/L-4733AW Operation Guide Maintenance Cleaning Area Web Guide Roller A Free Roller B Nip Lower Roller Remove the curl suppressors (front and back interior).
Page 253 L-4733A/L-4733AW Operation Guide Maintenance Clean nip roller B. 8: Nip Roller B With one hand, operate nip lever B to release nip roller B, while holding a polyester/nylon knit woven fabric dampened with the ink cleaning alcohol in your other hand.
Page 254 L-4733A/L-4733AW Operation Guide Maintenance 10: Free Roller C 11: Free Roller D Clean free roller C. Clean free roller D.
Page 255 L-4733A/L-4733AW Operation Guide Maintenance When you have finished cleaning, remove the slack from the substrate. With one hand, operate nip lever B to release nip roller B, while using your other hand to feed the slack in the substrate on the platen to the feed side.
Page 256: Heater/Rewinder Section
L-4733A/L-4733AW Operation Guide Maintenance Reattach the curl suppressors (front and back interior). Operate nip lever A to fix nip roller A. Close top cover 1 and 2 and front cover 1 and 2 on the press. Caution: When closing the top covers on the press, close them slowly while holding the handle on the cover.
Page 257 L-4733A/L-4733AW Operation Guide Maintenance Caution: Perform operations for the Rewinder and surrounding area after pressing the Wind Ready switch and confirming that the lamp is off. Cutting the substrate or operating the nip lever while the lamp is lit causes a sudden winding and may result in an injury.
Page 258 L-4733A/L-4733AW Operation Guide Maintenance Operate the nip lever to release nip roller D, and then loosen the felt brake adjustment knob. Open front cover 1, 2, and 3 on the press.
Page 259 L-4733A/L-4733AW Operation Guide Maintenance Operate the nip lever to release nip roller C. See the following figure for the procedure on how to clean the rollers in the heater and the workbench. Wipe off any paper powder, dust, glue and so on with the polyester/nylon knit woven fabric dampened with the ink cleaning alcohol.
Page 260 L-4733A/L-4733AW Operation Guide Maintenance Cleaning Area Free Roller E Free Roller F Free Roller G Free Roller H Loosen the screws (4 positions) and slide the sitting board to the left to make it easier to wipe the rollers.
Page 261 L-4733A/L-4733AW Operation Guide Maintenance Cleaning Area Drive Roller C Nip Roller C Dancer Roller C Workbench B Pull the cut substrate out of the rollers in the Rewinder.
Page 262 L-4733A/L-4733AW Operation Guide Maintenance Roll up the end of the substrate and fix it to workbench B with a magnet bar, so that the substrate does not return in the feed direction. Remove the substrate guide from the Rewinder. Loosen the screws on the substrate guides (2 positions for each guide).
Page 263 L-4733A/L-4733AW Operation Guide Maintenance Clean the rollers from fixed roller A to nip roller D. Wipe off any paper powder, dust, glue and so on with the polyester/nylon knit woven fabric dampened with the ink cleaning alcohol. Clean the substrate guides.
Page 264 L-4733A/L-4733AW Operation Guide Maintenance Install the substrate guide. Place the back substrate guide against the back wall of the Rewinder, and slide the slit on the right side of the substrate guide onto the shaft of the Rewinder. Slide the slit on the left side of the substrate guide onto the shaft of the Rewinder.
Page 265 L-4733A/L-4733AW Operation Guide Maintenance Tighten the screws (2 positions) on the substrate guide. Feed the substrate through the rollers on the Rewinder. Place a paper core on the Rewinder. Place the front substrate guide against the front frame, and slide it onto the shafts on the right and...
Page 266 L-4733A/L-4733AW Operation Guide Maintenance Slide the front substrate guide until it is against the edge of the paper, and then tighten the screws (2 positions) on the substrate guide. Tighten the felt brake knob. Operate nip lever C and nip lever D to fix nip roller C and nip roller D.
Page 267: Platen/Platen Left Roller
L-4733A/L-4733AW Operation Guide Maintenance Platen/Platen Left Roller If the platen is soiled or in an abnormal condition, it could have an adverse effect on the printing results. A prompt to inspect the platen left roller is not displayed on the touch panel. This should be inspected and cleaned once a week along with the platen.
Page 268 L-4733A/L-4733AW Operation Guide Maintenance Operate the nip lever to release nip roller A so there is slack in the substrate. Remove the curl suppressors (front and back interior). With one hand, operate nip lever B to release nip roller B, while lifting the substrate with your other hand.
Page 269 L-4733A/L-4733AW Operation Guide Maintenance Clean the platen. While lifting the slackened substrate, wipe off any paper powder, dust, glue and so on with the polyester/ nylon knit woven fabric dampened with the ink cleaning alcohol. Important: ❏ The platen surface may be hot (up to approx. 45˚C). If it is hot, wait for it to cool down before cleaning.
Page 270: Curl Suppressors
L-4733A/L-4733AW Operation Guide Maintenance Reattach the curl suppressors (front and back interior). Operate nip lever A to fix nip roller A. Close top cover 2 on the press. Caution: When closing the top covers on the press, close them slowly while holding the handle on the cover.
Page 271 L-4733A/L-4733AW Operation Guide Maintenance Switch to Motor Drive Off mode on the touch panel's Periodic Maintenance screen. Open top cover 2 on the press. Caution: When opening the top covers on the press, push them up firmly so that the covers do not shut.
Page 272 L-4733A/L-4733AW Operation Guide Maintenance Clean the curl suppressors. Wipe off any paper powder, dust, glue and so on with the polyester/nylon knit woven fabric dampened with the ink cleaning alcohol. Important: ❏ Do not dip the curl suppressor joining parts directly into the ink cleaning alcohol. The curl suppressors may peel off.
Page 273 L-4733A/L-4733AW Operation Guide Maintenance Push the fixing part on the right towards the left to install the curl suppressor. Install the curl suppressor at the front using the same procedure as for the one further inside.
Page 274 L-4733A/L-4733AW Operation Guide Maintenance When installing the curl suppressor at the front, adjust the curl suppressor so that the curl suppressor is straight and the edge of the substrate comes between two lines on the curl suppressor. To position the curl suppressor, loosen the screw on the fixing part.
Page 275: Cover Head (Manual Cleaning)
L-4733A/L-4733AW Operation Guide Maintenance Check that the LED lamp below the curl suppressor fixing part is off. If the curl suppressors are installed correctly, the LED lamps on the bottom of the fixing parts on the right of the curl suppressors (back/front) will be off.
Page 276 L-4733A/L-4733AW Operation Guide Maintenance Open top covers 1 and 2, and front cover 3 on the press. Caution: When opening the top covers on the press, push them up firmly so that the covers do not shut. If the cover closes while you are working, an injury could occur.
Page 277 L-4733A/L-4733AW Operation Guide Maintenance Important: ❏ When cleaning the cover heads, be careful not to touch the nozzle surfaces on the heads. Otherwise, the heads may break down. You need to replace the heads if they break down. ❏ When cleaning the cover head, do not press the cleaning stick jig too hard against the cover head. If you press too hard, the cover heads could be deformed.
Page 278 L-4733A/L-4733AW Operation Guide Maintenance Attach the cover head cleaning jig for long edges (X), and wipe back and forth 10 times on the long edges of the nozzle surfaces. Example of installing the cover head cleaning jig for long edges (X) Attach the cover head cleaning jig for short edges (Y), and wipe back and forth 10 times on the short edges of the nozzle surfaces.
Page 279 L-4733A/L-4733AW Operation Guide Maintenance Before cleaning After cleaning Remove the cover head cleaning jig. Remove and dispose of the swab material that was used for cleaning. Check that there are no tools or jigs left on the platen, in the ink system, or head unit.
Page 280: Carriage Plate
L-4733A/L-4733AW Operation Guide Maintenance This completes this section. Carriage Plate If an error occurs indicating that continuous operations have been performed for a long period of time, use the following procedure to check the condensation on the carriage plate. Condensation may affect print quality.
Page 281 L-4733A/L-4733AW Operation Guide Maintenance Look inside the press through the opening on front cover 3, to check the condensation on the carriage plate around the print heads. Caution: Be careful not to bang your head on the product's structural parts or the operation table when checking the carriage plate or wiping off the condensation.
Page 282 L-4733A/L-4733AW Operation Guide Maintenance Wipe off the condensation on the carriage plate. Caution: ❏ Be careful not to bang your head on the product's structural parts or the operation table when checking the carriage plate or wiping off the condensation. A head injury may occur.
Page 283 L-4733A/L-4733AW Operation Guide Maintenance Note: You can sit on the sitting board inside front cover 3 when performing these operations. Check the photo below for the areas where you need to wipe off the condensation. Blue shaded area (b): Do not use the cleaning jig for cover heads.
Page 284 L-4733A/L-4733AW Operation Guide Maintenance Wipe off the condensation around the carriage plate and on the center. (Area b in the figure for step (1)) Use the cleaning jig for the cover heads (for long edges) and wipe between the heads. (Area C in the figure for step (1)) Remove the cleaning jig for the cover heads and check the condensation on the carriage plate.
Page 285: Wipers
L-4733A/L-4733AW Operation Guide Maintenance Important: ❏ Make sure that you have wiped off the condensation. ❏ After wiping off the droplets, make sure that there is no fluff on the carriage plate surface and the cover heads. If any fluff remains, remove it using the cleaning stick jig with swab material attached to the tip.
Page 286 L-4733A/L-4733AW Operation Guide Maintenance Check that the carriage has moved to the right edge. Clean the wipers. Attach the wiper cleaning jig, dampen the wiper cleaning stick (large) with the ink cleaning alcohol, and use it to wipe off ink deposits from the wipers and surrounding areas.
Page 287 L-4733A/L-4733AW Operation Guide Maintenance When you have finished cleaning one wiper, wash the cleaning stick (large) before cleaning the next wiper. a: Cap d: left side b: Wiper e: right side c: top side f: Remove the ink or deposits especially from the area indicated by a thick line.
Page 288: Cleaning Caps
L-4733A/L-4733AW Operation Guide Maintenance Note: Change the installation point for the wiper cleaning jig depending on the point you want to clean. Example of installing the wiper cleaning jig: Remove the wiper cleaning jig. Check that there are no tools or jigs left on the platen, in the ink system, or head unit.
Page 289 L-4733A/L-4733AW Operation Guide Maintenance Open top cover 1 and 2 on the press. Caution: When opening the top covers on the press, push them up firmly so that the covers do not shut. If the cover closes while you are working, an injury could occur.
Page 290 L-4733A/L-4733AW Operation Guide Maintenance Attach new swab material to the cleaning stick jig and dampen it with the ink cleaning alcohol. Insert the cleaning stick jig into the groove in the cleaning cap cleaning jig. Place the flange section of the cleaning stick jig against the top surface of the cleaning cap cleaning...
Page 291 L-4733A/L-4733AW Operation Guide Maintenance Clean the other side of the back cleaning caps (1 through 8). Insert your fingers into the finger hold sections, lift the cleaning cap cleaning jig, turn it 180 degrees, and then place it on the same cleaning caps again.
Page 292 L-4733A/L-4733AW Operation Guide Maintenance Clean the other side of the front cleaning caps (9 through 15). Insert your fingers into the finger hold sections, lift the cleaning cap cleaning jig, turn it 180 degrees, and then place it on the same cleaning caps again.
Page 293: Moisturizer Caps
L-4733A/L-4733AW Operation Guide Maintenance This completes this section. Moisturizer Caps If the moisturizer caps are soiled, or in an abnormal condition, they could have an adverse effect on the printing results. Switch to Shift Carriage mode on the touch panel's Periodic Maintenance screen.
Page 294 L-4733A/L-4733AW Operation Guide Maintenance Important: ❏ Clean the moisturizer caps on the cleaning frame. Be careful not to splash water on the absorption pump when cleaning. Otherwise, the absorption pump may break down. ❏ Do not leave any foreign substances on the moisturizer caps. Otherwise, the heads may break down.
Page 295: Auto Nozzle Check Plates
L-4733A/L-4733AW Operation Guide Maintenance Important: ❏ If ink deposits still remain, continue wiping until they have been removed. ❏ When cleaning the moisture caps, gently press the cleaning stick jig against the edges of the caps while being careful not to scratch them.
Page 296 L-4733A/L-4733AW Operation Guide Maintenance Check that the carriage has moved to the right edge. Clean the auto nozzle check plates. Wipe the auto nozzle check plates one by one to remove any ink deposits and so on with the polyester/nylon...
Page 297: Flushing Unit
L-4733A/L-4733AW Operation Guide Maintenance Clean the black board around the auto nozzle check plates. Wipe off any dust or fluff with the polyester/nylon knit woven fabric dampened with the ink cleaning alcohol. Remove any fluff that remains on the auto nozzle check plates.
Page 298 L-4733A/L-4733AW Operation Guide Maintenance Replacing the Flushing Units Prepare the replacement flushing units in advance, and then start the procedure. Switch to Shift Carriage mode on the touch panel's Periodic Maintenance screen. When the message prompting you to clean the flushing unit is displayed, you do not need to perform any operations on the touch panel.
Page 299 L-4733A/L-4733AW Operation Guide Maintenance Release the hook lock that secures the flushing unit. Remove the flushing unit. Hold the handles on the flushing unit, slide it to the back, and then lift it straight up. Remove the flushing unit horizontally so that the ink in the ink receiving section does not spill.
Page 300 L-4733A/L-4733AW Operation Guide Maintenance Install the replacement flushing unit. Install it so that it is aligned with the two notches at the back and front. After installing, slide it back and forth once to make sure that it is placed correctly.
Page 301 Entrust waste fluid processing to an industrial waste disposal contractor. When entrusting processing to a contractor, be sure to give the "Material Safety Data Sheet" to the contractor. You can download the "Material Safety Data Sheet" from the Epson Web site. Clean the flushing unit's roller.
Page 302 L-4733A/L-4733AW Operation Guide Maintenance Hold both ends and open the roller section. Be careful not to get your hands caught in the rollers. Remove and dispose of the absorbing material (paper cloth) that is placed inside the ink receiving section.
Page 303: Wiper Pads
L-4733A/L-4733AW Operation Guide Maintenance Hold both ends and close the roller section. After closing the roller section, make sure that none of the absorbent material is protruding or touching the roller. This completes this section. Wiper Pads After the wiper has wiped off any ink remaining on the head, the wiper pads absorb the ink that has accumulated on the cover head.
Page 304 L-4733A/L-4733AW Operation Guide Maintenance Placing the Wiper Pads You can use the top and bottom edges of the wiper pads. Remove the wiper pad from the wiper pad holder. Check the condition of the removed wiper pad. One edge is dirty: You can flip it over and use the other side.
Page 305 L-4733A/L-4733AW Operation Guide Maintenance Important: Make sure that there is no gap between the wiper pad and the bottom of the wiper pad holder. If there is a gap of 1 mm or more between the wiper pad and the bottom of the wiper pad holder, the wiper pad may come in contact with the side of the print head and be dislodged from the wiper pad holder.
Page 306 L-4733A/L-4733AW Operation Guide Maintenance Check that the carriage has moved to the right edge. Remove the wiper pad holder from the press. Grip the handle on the wiper pad holder and lift it straight up. Remove all 15 holders. Attach the replacement wiper pad holders to the press.
Page 307 L-4733A/L-4733AW Operation Guide Maintenance Once you have attached all 15 wiper pad holders in the same way, check to make sure they are attached correctly. If the top of the wiper pad is not horizontal or if it is not at the same height as the other wiper pads, attach it again.
Page 308: Foreign Substance Sensor
L-4733A/L-4733AW Operation Guide Maintenance Follow the on-screen instructions to confirm that the wiper pads are installed in the wiper pad holders. The replacement process is complete when all 15 wiper pads are installed in the wiper pad holders. Press OK to start automatic head maintenance.
Page 309 L-4733A/L-4733AW Operation Guide Maintenance Check that the carriage has moved to the right edge. Look inside the press through the opening on front cover 3, to check if the detection plate is soiled with ink. If the sensor is soiled, use the cleaning stick (large) dampened with the ink cleaning alcohol to wipe off ink deposits from the detection plate.
Page 310 L-4733A/L-4733AW Operation Guide Maintenance Note: You can sit on the sitting board inside front cover 3 when performing these operations. Check the foreign substance sensor operations. Lightly push up the detection plates (4 positions), and if the internal LED lamps turn on, it is operating...
Page 311: Ceiling Fan Intake Filters
L-4733A/L-4733AW Operation Guide Maintenance Important: If the LED lamps do not turn on when checking the operation of the detection plates, contact service support immediately. Check that there are no tools or jigs left on the platen, in the ink system, or head unit.
Page 312: Heater Intake Filter
L-4733A/L-4733AW Operation Guide Maintenance Clean the filters. Use a vacuum cleaner to clean the dusty side of the filters. If you cannot remove the dust, place the filters with the dusty side down, and rinse with water. Important: ❏ When washing, do not rub the filters.
Page 313: Maintenance Tank
L-4733A/L-4733AW Operation Guide Maintenance Remove the filter for the heater. Clean the filter. Use a vacuum cleaner to clean the dusty side of the filter. If you cannot remove the dust, place the filter with the dusty side down, and rinse with water.
Page 314 Entrust waste fluid processing to an industrial waste disposal contractor. When entrusting processing to a contractor, be sure to give the "Material Safety Data Sheet" to the contractor. You can download the "Material Safety Data Sheet" from the Epson Web site. Open the maintenance tank cover.
Page 315 L-4733A/L-4733AW Operation Guide Maintenance This completes this section.
Page 316: Troubleshooting
L-4733A/L-4733AW Operation Guide Troubleshooting Troubleshooting Notification Methods when an Error Occurs When an error occurs in the press, an error alarm sounds, a pilot lamp turns on, and an error message is displayed on the touch panel. Error alarm and the pilot lamp The error alarm and color of the pilot lamps indicate three types of error.
Page 317: Typical Messages
L-4733A/L-4733AW Operation Guide Troubleshooting Letter Name Explanation Error Name Indicates the content of the error. Error Details Indicates the details and how to handle the error. Stop Error Alarm Stops the error alarm. Release Error Press once an error has been cleared. The canceled error is released. If an error cannot be released, it continues to be displayed.
Page 318 L-4733A/L-4733AW Operation Guide Troubleshooting Set the breaker to OFF. Wait for a while, and then set the breaker to ON. Once it is set to ON, it takes approximately one minute before the press turns on. Move the press switch from P to Standby.
Page 319: The Prints Are Not What You Expected
L-4733A/L-4733AW Operation Guide Troubleshooting The prints are not what you expected Cause What to do Stripes appear on the printable surface Are the head nozzles clogged? If the head nozzles are clogged, stripes appear on the printable surface, and the print quality declines.
Page 320 L-4733A/L-4733AW Operation Guide Troubleshooting Cause What to do I want to adjust the gap between Adjust the column pitch set in the preset. columns. Set the Print Data Pitch in the preset to Use Custom Pitch, and adjust the amount of space between columns in Custom Pitch Setting. As much as possible, we recommend printing as few copies as possible while fine tuning the settings.
Page 321 L-4733A/L-4733AW Operation Guide Troubleshooting Cause What to do The print position shifts The substrate may expand or contract due to heat from the press which can lower the accuracy of the print position. Follow the solutions below depending on the actual situation.
Page 322 L-4733A/L-4733AW Operation Guide Troubleshooting Cause What to do Patterns appear on the printed surface Try a substrate from another lot with the same serial number. Patterns may appear after printing due to the coating status of the substrate surface. Check the print results after using a substrate from another lot with the same serial number.
Page 323 L-4733A/L-4733AW Operation Guide Troubleshooting Cause What to do Small scratches gradually appear when Try the Apply Ql feature. printing in 4 pass or 6 pass mode. Try setting the preset’s Apply Ql to Use Print Mode. For color print mode, select a mode name that contains the text QL25% or QL50%.
Page 324: Stopping Press Operations In An Emergency
L-4733A/L-4733AW Operation Guide Troubleshooting Stopping Press Operations in an Emergency After stopping the press using an emergency stop, follow the steps below to restart the press. Check the cause of the emergency stop, and resolve the situation. Important: If the substrate is jammed on the platen, use scissors and so on to cut the substrate and remove it from the platen.
Page 325: When You Cannot Turn The Power On Due To An Unexpected Power Failure Or Malfunction
L-4733A/L-4733AW Operation Guide Troubleshooting When You Cannot Turn the Power on Due to an Unexpected Power Failure or Malfunction If the power is out for more than 15 minutes, or if the power does not turn on due to a malfunction, use the following procedure to cap the print head to prevent it from drying out.
Page 326 L-4733A/L-4733AW Operation Guide Troubleshooting If the moisture cap is not on the cleaning cap unit, move the moisture cap unit manually to align it. Open front cover 1 on the press. Turn the roller at the bottom of the cleaning cap unit counterclockwise to lower the cleaning cap unit.
Page 327 L-4733A/L-4733AW Operation Guide Troubleshooting Move the moisture cap unit over the cleaning cap unit. Align the pins on the moisture cap unit with the holes in the cleaning cap unit. Turn the roller for the cleaning cap unit clockwise, and stop turning when the pins of the moisturizing cap unit pass through the holes in the cleaning cap unit.
Page 328 L-4733A/L-4733AW Operation Guide Troubleshooting Remove the fan connector. Remove the carriage cover. Loosen the screw (1 position) at the front of the carriage with an Allen wrench. Loosen the screws (2 positions) at the top of the carriage with an Allen wrench.
Page 329 L-4733A/L-4733AW Operation Guide Troubleshooting Slide the carriage cover forward to remove it. Move the carriage horizontally (left and right) to the capping position. Manually position the carriage so that the hole in the carriage lines up with the hole in the moisture cap.
Page 330 L-4733A/L-4733AW Operation Guide Troubleshooting Hold the cover and lift it up to remove it. Move the carriage vertically (front and back) to the capping position. Turn the roller behind the carriage, and position the carriage so that the hole in the carriage lines up with the hole in the moisture cap.
Page 331 L-4733A/L-4733AW Operation Guide Troubleshooting Check the carriage position. Check that the hole in the carriage and the hole in the moisture cap are accurately aligned. If they are not aligned, repeat steps 8 and 10. Important: Align the carriage position accurately.
Page 332 L-4733A/L-4733AW Operation Guide Troubleshooting Remove the press cover in front of the carriage. Loosen the screws (three positions) with an Allen wrench, and remove the press cover in front of the carriage. Open front cover 1 on the press.
Page 333 L-4733A/L-4733AW Operation Guide Troubleshooting Raise the moisture cap and perform capping. Turn the roller clockwise to raise the moisture cap. Raise the moisture cap to the position shown in the image below (b: 4 to 5 mm (0.15 to 0.2 inch)).
Page 334 L-4733A/L-4733AW Operation Guide Troubleshooting Reattach the press cover in front of the carriage. Reattach the press cover, and tighten the screws (three positions). Reattach the carriage cover. Reattach the carriage cover, and then tighten the screws (three positions).
Page 335: When Power Is Restored In Less Than 15 Minutes
L-4733A/L-4733AW Operation Guide Troubleshooting Attach the fan connector. Close top cover 1 on the press. When you open the front cover, close front cover 1. Caution: When closing the top covers on the press, close them slowly while holding the handle on the cover.
Page 336 L-4733A/L-4733AW Operation Guide Troubleshooting Set the breaker to OFF. Wait for approximately one minute, and then set the breaker to ON. Move the press switch from P to Standby. The press starts. This completes this section.
Page 337: If The Substrate Is Jammed
L-4733A/L-4733AW Operation Guide Troubleshooting If the Substrate is Jammed This section explains how to check for substrate jammed in the press. Caution: ❏ Do not remove the substrate forcibly when clearing substrate jams. Also, do not work with an unstable posture.
Page 338 L-4733A/L-4733AW Operation Guide Troubleshooting Open top cover 1 and 2 and front cover 1, 2, and 3 on the press, and then check the status of the jammed substrate. Caution: When opening the top covers on the press, push them up firmly so that the covers do not shut.
Page 339: When Removing And Loading Substrate
L-4733A/L-4733AW Operation Guide Troubleshooting When Removing and Loading Substrate If you need to reload after removing the loaded substrate, use the following procedure. “Removing the substrate” on page 339 “Loading the Substrate” on page 343 Caution: ❏ When loading or removing roll substrate, be sure to secure appropriate personnel and appropriate transport equipment such as a lifter according to local laws on health and safety.
Page 340 L-4733A/L-4733AW Operation Guide Troubleshooting The Standby lamp and touch panel display turn off, and the press shuts down. Open top cover 2 on the press. Caution: When opening the top covers on the press, push them up firmly so that the covers do not shut.
Page 341 L-4733A/L-4733AW Operation Guide Troubleshooting Remove the substrate. Raise the winding deterioration prevention lever. Note: When you raise the winding deterioration prevention lever, the Feed Ready switch lamp flashes to indicate that the lever is raised. Turn the knob on the feed shaft counterclockwise to loosen the substrate.
Page 342 L-4733A/L-4733AW Operation Guide Troubleshooting Remove the bolt for the nip lever. Operate the four nip levers (a, b, c, and d), release the nip roller, and then loosen the felt brake adjustment knob (e). Remove the substrate. Slowly pull the substrate out of the conveyor section on the press.
Page 343: Loading The Substrate
L-4733A/L-4733AW Operation Guide Troubleshooting After operating the nip lever, secure nip roller B, and then install the bolt. Close top cover 2 on the press. Caution: When closing the top covers on the press, close them slowly while holding the handle on the cover.
Page 344 L-4733A/L-4733AW Operation Guide Troubleshooting Remove the bolt for the nip lever. Operate the four nip levers (a, b, c, and d), release the nip roller, and then loosen the felt brake adjustment knob (e).
Page 345 L-4733A/L-4733AW Operation Guide Troubleshooting Adjust the near end sensor to match the external diameter of the paper core for the new substrate. Measure the external diameter of the paper core for the new substrate. Loosen the screw, match the value measured by the top edge sensor to the external diameter of the paper core, and then tighten the screw.
Page 346 L-4733A/L-4733AW Operation Guide Troubleshooting Place the substrate on the shaft, and then push it into the press until it presses lightly against the magnetic bar. Turn the knob on the feed shaft clockwise to tighten the substrate. Pull out and remove the magnetic bar.
Page 347 L-4733A/L-4733AW Operation Guide Troubleshooting Change the feed direction switch. ❏ If the printable surface (a) is the outside of the roll, move the switch down. ❏ If the printable surface (b) is the inside of the roll, move the switch up.
Page 348 L-4733A/L-4733AW Operation Guide Troubleshooting Close the maintenance tank cover.
Page 349 L-4733A/L-4733AW Operation Guide Troubleshooting Load the substrate into the press. The substrate is loaded along the substrate path channel. See the following illustration to perform the operation. Caution: Check that the heater and drying heater have cooled sufficiently before performing part replacements or maintenance inspections.
Page 350 L-4733A/L-4733AW Operation Guide Troubleshooting Position Loading Method/Notes and so on Load substrate so that it passes over the paper detection sensor. Pass the substrate through the paper guide. Do not lock the nip roller until the substrate has passed through all points in the channel.
Page 351 L-4733A/L-4733AW Operation Guide Troubleshooting Position Loading Method/Notes and so on Inside the heater, open the heater cover, remove the substrate guide, and then load the substrate.
Page 352 L-4733A/L-4733AW Operation Guide Troubleshooting Position Loading Method/Notes and so on Once the substrate has passed through the heater, reattach the substrate guide, and then close the heater cover. Pass the substrate between the sitting board and the girder of the press. Next, loosen the screws (4...
Page 353 L-4733A/L-4733AW Operation Guide Troubleshooting Position Loading Method/Notes and so on Do not lock the nip roller until the substrate has passed through all points in the channel. Adjust the position of the substrate so that it feeds straight through the press.
Page 354 L-4733A/L-4733AW Operation Guide Troubleshooting Pull out the substrate to remove any slack and position the edge of the substrate at the inside edge of the conveyor section, and then operate nip lever (c) to lock nip roller C. Important: Check that the nip rollers are fixed correctly.
Page 355 L-4733A/L-4733AW Operation Guide Troubleshooting Important: ❏ If the substrate unwinds or is slack, wrap it firmly around the shaft, and then press the Feed Ready switch. If you press the Feed Ready switch without wrapping it firmly, internal parts could be damaged by impacts when tension is applied to the substrate.
Page 356 L-4733A/L-4733AW Operation Guide Troubleshooting When loading substrate of different widths, align the substrate for the connecting section of the rewinder to the width of the substrate. “Adjusting the Paper Feed Path Guide” on page 65 Align the substrate guide for the Rewinder to the width of the substrate.
Page 357 L-4733A/L-4733AW Operation Guide Troubleshooting Prepare to wind up the substrate using the Rewinder. Wind up the loaded substrate with the Rewinder. “Performing Initial Winding for the Substrate” on page 80 Feed the substrate until the conveyor stabilizes. Hold down the Feed switch on the press to feed the substrate until the conveyor stabilizes.
Page 358: The Substrate Is Cut During Printing
L-4733A/L-4733AW Operation Guide Troubleshooting The Substrate is Cut During Printing If the substrate that has passed through the heater has wrinkles, scratches, or creases, or if the substrate is cut and wrinkled at the tip, the following issues may occur.
Page 359 L-4733A/L-4733AW Operation Guide Troubleshooting Check that the heater temperature has fallen sufficiently, and then open the heater cover. Loosen and remove the screws (2 positions) that are securing the heater cover, and then open the heater cover. Loosen and remove the screws (2 positions) for the substrate guide.
Page 360 L-4733A/L-4733AW Operation Guide Troubleshooting Pull the substrate guide forward and remove. Important: If the substrate guide comes into contact with the substrate, insert your scales into three points above the substrate in the heater to hold the substrate down, and then pull out the substrate guide. If you do not have scales, you can use the platen cover sheet or magnetic bars that come with the press.
Page 361 L-4733A/L-4733AW Operation Guide Troubleshooting Check inside the heater, and if the substrate has wrinkles, scratches, or creases, manually wind it up to the winding shaft so that the substrate is not cut when printing is resumed. Also, remove any remaining pieces of substrate from inside the heater.
Page 362 L-4733A/L-4733AW Operation Guide Troubleshooting Tighten the screws (2 positions) for the substrate guide. Close the heater cover and tighten the screws (2 positions) to secure it in place. Close front cover 2 on the press. Pull the substrate at the position of nip roller C to remove any slack inside the heater.
Page 363: When The Substrate Cannot Be Wound Correctly
L-4733A/L-4733AW Operation Guide Troubleshooting When the substrate cannot be wound correctly If the substrate cannot be wound correctly, such as when it is skewed, check and adjust the following. ❏ The felt brake is lightly touching the substrate. “When replacing a wide substrate with a narrower substrate” on page 67 step 9 ❏...
Page 364: When Foreign Substances Are Detected
L-4733A/L-4733AW Operation Guide Troubleshooting When foreign substances are detected If a foreign substance is detected on the platen, printing is stopped immediately to protect the head. If an error message is displayed, see the following and take the appropriate action.
Page 365: If You Have Left The Wiper Cleaning Jig In The Press
L-4733A/L-4733AW Operation Guide Troubleshooting If you have left the wiper cleaning jig in the press Follow the steps below if you have left the wiper cleaning jig in the press after finishing work, causing a cap unit motor error. Check if the error "A cap unit motor error occurred." is displayed on the touch panel, and then follow the on-screen instructions to shut down the press.
Page 366 L-4733A/L-4733AW Operation Guide Troubleshooting Important: When moving the carriage, make sure you hold the specified part. If you hold a part that is not specified to move the carriage, the part may deform and cause a malfunction. Caution: After moving the carriage to the auto nozzle check plate (shown below), do not move the carriage any further to the right.
Page 367 L-4733A/L-4733AW Operation Guide Troubleshooting Remove the wiper cleaning jig. Close top cover 1 and front cover 1 on the press. Caution: When closing the top covers on the press, close them slowly while holding the handle on the cover. If the cover closes suddenly, an injury could occur.
Page 368: If You Have Left The Cleaning Cap Cleaning Jig In The Press
L-4733A/L-4733AW Operation Guide Troubleshooting If you have left the cleaning cap cleaning jig in the press Follow the steps below if you have left the cleaning cap jig in the press and switched modes, causing a moisture cap motor error.
Page 369 L-4733A/L-4733AW Operation Guide Troubleshooting Remove the cleaning cap jig from the press Close top cover 1 on the press. Caution: When closing the top covers on the press, close them slowly while holding the handle on the cover. If the cover closes suddenly, an injury could occur.
Page 370: If You Do Not Have New Wiper Pads
L-4733A/L-4733AW Operation Guide Troubleshooting If you do not have new wiper pads If you do not have new wiper pads and are unable to replace them when a message is displayed prompting you to do so, leave the wiper pads installed on the press. You can continue to use the Cover Head Auto Cleaning function until the number of uses reaches 200%.
Page 371: When Problems Cannot Be Resolved
L-4733A/L-4733AW Operation Guide Troubleshooting When Problems Cannot be Resolved If you cannot resolve a problem after taking the measures described in the "Troubleshooting" section, contact service support. If You are not Using the Press for more than One Month After finishing printing normally, perform the following steps if you are not going to use the press for more than one month.
Page 372: Faq
L-4733A/L-4733AW Operation Guide Frequently Asked Questions Refer to this section when you want to improve print quality or make printing more efficient. Q.1 How can I reduce wasted paper? A.1-1 Plan the substrate replacement procedure The procedure outlined in this guide (U “Changing the Substrate”...
Page 373: Q.2 What Should I Do If The Maintenance Tank Fills Up While Printing
L-4733A/L-4733AW Operation Guide ❏ When replacing using the normal method Approx. 10 m (when replacing substrate) + approx. 3 m (when removing wound up substrate) + approx. 2 m (initial winding) = Approx. 15 m ❏ When performing A.1-1 and A.1-2 (see the following illustration) Approx.
Page 374: Q.3 Can I Turn Off The Heater And Fan While The Press Is Operating
L-4733A/L-4733AW Operation Guide Q.3 Can I turn off the heater and fan while the press is operating? A.3-1 You can turn it off from the Operation Status screen on the touch panel. The temperature for the platen and the heater gradually decrease when Heater/Fan is set to Off on the Operation Status screen on the touch panel.
Page 375: Application Range
L-4733A/L-4733AW Operation Guide ❏ Over print function ❏ Apply Ql function <Over print function> This function applies over print liquid to the print surface immediately after color/black ink printing. The abrasion resistance for the print surface is increased. The printing speed slows down to apply the over print liquid after color/black ink printing.
Page 376: Is There A Way To Adjust The Pitch (Intervals) For Printed Materials (Labels)
L-4733A/L-4733AW Operation Guide You should normally select Use Print Mode. However, if you are concerned about ink blurring, this can be decreased by selecting Do Not Apply. If you select Do Not Apply, print a test page first and inspect the results.
Page 377 L-4733A/L-4733AW Operation Guide Create Print Info. for the substrate that is going to be used, and set items except for the Feed Corr. Value. “Creating and Editing Print Info.” on page 49 Select the Print Info. you created on the Print Info. screen, and then press Correct Frame Feed.
Page 378 L-4733A/L-4733AW Operation Guide Look for the point at which the measurement line and the straight line (red) overlap between the first frame and the second frame in the print results, and make a note of the value. Enter the value in Amount of Gap in Chart (units: mm).
Page 379 L-4733A/L-4733AW Operation Guide (14) Close top cover 2 on the press after checking the print results on the platen. Caution: When closing the top covers on the press, close them slowly while holding the handle on the cover. If the cover closes suddenly, an injury could occur.
Page 380 L-4733A/L-4733AW Operation Guide Because the border between the first and second frames falls on the right-hand side of the platen, measure any label pitch in the same frame as the label pitch at the border. a: Frame border b: Label pitch in the frame c: Label pitch between frames Close top cover 2 on the press.
Page 381: Q.7 Can I Print Continuously For A Long Period Of Time
L-4733A/L-4733AW Operation Guide (10) Because the border between the third and fourth frames falls on the right-hand side of the platen, measure the label pitch in the same frame as any label pitch at the border. (11) Close top cover 2 on the press.
Page 382: Q.8 The Startup Screen Is Displayed For A Long Time
L-4733A/L-4733AW Operation Guide Q.8 The startup screen is displayed for a long time. When you start the press, it reads the print jobs. If a lot of print jobs have accumulated in the press, a progress bar may be displayed for a while on the touch panel's startup screen.
Page 383: The White Background To Which Ink Should Not Be Applied Is Stained With Ink During Film Printing
L-4733A/L-4733AW Operation Guide Q.9 The white background to which ink should not be applied is stained with ink during film printing. A.9 Change the settings in Color Print Mode, Apply Ql, and QL Application Area from Print Info. Due to an electrostatic charge in the film substrate, some ink dots may adhere to the white background (non-printing areas).
Page 384: Is It Possible To Correct Differences In The Post-Processing Device
L-4733A/L-4733AW Operation Guide Value Data input format Color Print Mode Apply Ql QL Application Area Except for the above Film, 8 pass (#0) Advanced Film, 8 pass (#1) Film, 16 pass (#1) Film, 16 pass (#2) Film/Foil, 8 pass, White on top of Color (#0) Film/Foil, 8 pass, White on top of Color (#1) *1 Data formats differ depending on the print application software.
Page 385 L-4733A/L-4733AW Operation Guide ❏ Set Frame Feed Correction Value by Job for the preset However, productivity declines when the frame feed is set to shorter than the largest frame size. Also, since the drying time varies depending on the position of the label in the frame, the drying time may increase.
Page 386 L-4733A/L-4733AW Operation Guide Measure the following values. ❏ Measure the distance (L) from the post-processing device registration mark sensor to the center of the missed area. a: Post-processing device registration mark sensor b: Center of missing area ❏ Measure the pitch (P) of the printed materials (labels)
Page 387 L-4733A/L-4733AW Operation Guide Create print data (imposition) according to the largest frame size. Calculate the number (n) of labels and registration marks placed in one frame, and the number (d) of labels and registration marks skipped according to the distance from the registration mark sensor to the center of the missed area.
Page 388: Q.11 Is Uni-Directional Printing Possible
L-4733A/L-4733AW Operation Guide Set Frame Feed Correction Value by Job for the preset. The following equation allows you to calculate the necessary value. Value calculation equation: -P×d×(1+C/914.4)+e Pitch (P) of the printed materials (labels) Number (d) of registration marks skipped in the frame Value (C) of Frame Feed Correction Value by Substrate from Print Info.
Page 389: Q.13 Can I Adjust The Gap Between Frame Feeding While Printing
L-4733A/L-4733AW Operation Guide “Foreign Substance Sensor” on page 308 step 5 Q.13 Can I adjust the gap between frame feeding while printing? A.13 You can adjust the difference between substrate feeding directions between frames while printing. From the Settings tab on the Operation Status screen, enter the amount you want to correct in Feed Corr. Value.
Page 390 L-4733A/L-4733AW Operation Guide However, the printable area can only be changed up to a maximum of 315.2 mm. You can change the Bottom Margin to 5 mm when the substrate width is less than 325.2 mm. <Setting Item> Change the following settings in Press Settings from the Maintenance menu.
Page 391: Q.17 Can You Hear A Vibrating Sound Coming From The Platen
L-4733A/L-4733AW Operation Guide Q.17 Can you hear a vibrating sound coming from the platen? A.17 The platen cover sheet may not be installed correctly. Re-install the platen cover sheet. “Installing the Accessories” on page 84 step 4 Q.18 The error message “Remaining ink is below minimum level.” is displayed and the press cannot be shutdown.

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