Develop QC 2235 Plus Service Manual
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Develop QC 2235 Plus Service Manual

Develop QC 2235 Plus Service Manual

Develop qc 2235 plus service manual theory of operation
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DEVELOP
SERVICE MANUAL
THEORY OF OPERATION
QC 2235plus

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Summary of Contents for Develop QC 2235 Plus

  • Page 1 DEVELOP SERVICE MANUAL THEORY OF OPERATION QC 2235plus...

  • Page 3: Safety And Important Warning Items

    IMPORTANT NOTICE Because of possible hazards to an inexperienced person servicing this product as well as the risk of damage to the product, Develop GmbH. (hereafter called the Develop) strongly recommends that all servicing be performed only by Develop-trained service technicians.

  • Page 4: Safety Warnings

    SAFETY WARNINGS [1] MODIFICATIONS NOT AUTHORIZED BY DEVELOP GMBH Develop brand products are renowned for their high reliability. This reliability is achieved through high-quality design and a solid service network. Product design is a highly complicated and delicate process where numerous mechanical, physical, and electrical aspects have to be taken into consideration, with the aim of arriving at proper tolerances and safety factors.
  • Page 5 SAFETY AND IMPORTANT WARNING [2] CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE Develop brand products are extensively tested before shipping, to ensure that all applicable safety standards are met, in order to protect the customer and customer engineer (hereaf- ter called the CE) from the risk of injury. However, in daily use, any electrical equipment may be subject to parts wear and eventual failure.
  • Page 6 If the power cord or sheath is damaged, replace with a new power cord (with plugs on both ends) specified by Develop. If the power cord (inlet type) is not connected to the product securely, a contact problem may lead to increased resistance, overheating, and risk of fire.
  • Page 7 QC 2235plus Field Service Ver1.0 Mar. 2004 SAFETY AND IMPORTANT WARNING WARNING: Wiring • When an extension cord is required, use a specified one. Current that can flow in the extension cord is limited, so using a too long extension cord may result in fire. Do not use an extension cable reel with the cable taken up.
  • Page 8 SAFETY AND IMPORTANT WARNING ITEMS QC 2235plus Field Service Ver1.0 Mar. CAUTION: Ventilation • The product generates ozone gas during operation, but it will not be harmful to the human body. If a bad smell of ozone is present in the following cases, ventilate the room.
  • Page 9 QC 2235plus Field Service Ver1.0 Mar. 2004 SAFETY AND IMPORTANT WARNING WARNING: Work Performed with the product Powered • Take every care when making adjustments or performing an operation check with the product powered. If you make adjustments or perform an operation check with the external cover detached, you may touch live or high-voltage parts or you may be caught in moving gears or the timing belt, leading to a risk of injury.
  • Page 10 SAFETY AND IMPORTANT WARNING ITEMS QC 2235plus Field Service Ver1.0 Mar. WARNING: Safety Checkpoints • Before disassembling or adjusting the write unit (P/H unit) incorporating a laser, make sure that the power cord has been disconnected. The laser light can enter your eye, leading to a risk of loss of eyesight.
  • Page 11 QC 2235plus Field Service Ver1.0 Mar. 2004 SAFETY AND IMPORTANT WARNING WARNING: HANDLING OF CONSUMABLE • Toner and developer are not harmful substances, but care must be taken not to breathe excessive amounts or let the substances come into contact with eyes, etc. It may be stimulative.
  • Page 12 If a report of a serious accident has been received from a customer, an on-site evalua- tion must be carried out quickly and Develop must be notified. To determine the cause of the accident, conditions and materials must be recorded through direct on-site checks, in accordance with instructions issued by Develop.

  • Page 13: Indication Of Warning On The Machine

    QC 2235plus Field Service Ver1.0 Mar. 2004 SAFETY AND IMPORTANT WARNING INDICATION OF WARNING ON THE MACHINE Caution labels shown are attached in some areas on/in the machine. When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns and electric shock.
  • Page 14 SAFETY AND IMPORTANT WARNING ITEMS QC 2235plus Field Service Ver1.0 Mar. Do not throw into a fire 4036fsS002c0 High voltage High voltage 4036fsS003c0 S-12...
  • Page 15 DEVELOP SERVICE MANUAL THEORY OF OPERATION QC 2235plus Main Unit...

  • Page 17: Table Of Contents

    QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline System configuration.................... 1-1 Product specifications ..................1-3 Type ........................1-3 Functions ......................1-3 Types of paper ....................1-4 Maintenance ...................... 1-4 Machine specifications..................1-4 Operating environment ..................1-4 Built-in controllers ....................1-5 Center cross section ....................
  • Page 18 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 Operation......................2-16 5.3.1 PC Drum Drive mechanism................ 2-16 5.3.2 PC Drum Phase control ................2-16 5.3.3 PC Drum small amount rotation control ............. 2-17 Charge Corona section ..................2-18 Operation......................2-19 6.1.1 PC Drum Charge Corona ON/OFF control..........
  • Page 19 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 9.3.6 Transfer Belt cleaning ................. 2-42 9.3.7 2nd Image Transfer Roller cleaning ............2-43 9.3.8 Charge neutralization and separation of paper .......... 2-44 9.3.9 Detection of New Transfer Belt Unit ............2-45 9.3.10 ACS control....................
  • Page 20 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 Synchronizing Roller section................2-69 14.1 Composition ....................2-69 14.2 Drive ........................ 2-69 14.3 Operation......................2-70 14.3.1 Synchronizing Roller control............... 2-70 14.3.2 OHP detection .................... 2-71 Fusing section....................2-72 15.1 Composition ....................2-72 15.2 Drive ........................

  • Page 21: System Configuration

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 System configuration I Outline System configuration 1/2 System front view [11] [12] [13] [10] Machine Job Separator JS-601 Automatic Duplex Unit AD-501 Finisher FS-601 Paper Feed Cabinet PC-201 [10] Punch Kit PK-4 for FS-601 Paper Feed Cabinet PC-101 [11] Reverse Automatic Document Feeder DF-601 Desk DK-501...
  • Page 22 System configuration QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 2/2 System rear view [10] [11] Machine Local Interface Kit EK-501 Vender Kit VK-501 Mechanical Counter (South Central America, North America, Europe Only) Data Terminal DT-105 Key Counter Kit KIT-1 (South Central America, North America Only) Dehumidifier Heater 1C...

  • Page 23: Product Specifications

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specifications Product specifications Type Type Desktop-type printer integrated with scanner Copying System Electrostatic dry-powdered image transfer to plain paper Printing Process Tandem-type indirect electrostatic recording system PC Drum Type OPC (organic photo conductor) Scanning Density Equivalent to 600 dpi Equivalent to 600 dpi in main scanning direction ×...

  • Page 24: Types Of Paper

    Product specifications QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Types of paper Paper Source Tray1 Tray2 Multiple Bypass Plain paper (60 to 90 g/m Translucent paper – – – OHP transparencies – (crosswise feeding only) Thick paper 1 – (91 to 150 g/m Thick paper 2 (20 sheets or...

  • Page 25: Built-In Controllers

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specifications Built-in controllers Printer Driver PCL5c printer driver Scan Driver TWAIN driver OS Compatibility Windows 98/Me, Windows NT/2000/XP, Windows Server 2003 Interface Ethernet 10/100BaseTX NOTE • These specifications are subject to change without notice.

  • Page 26: Center Cross Section

    Center cross section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Center cross section [10] 4036ma101c0 CCD Unit Multiple Bypass Fusing Unit Tray2 Imaging Unit/Bk Imaging Unit/M Imaging Unit/C Imaging Unit/Y Tray1 [10] Transfer Belt Unit...

  • Page 27: Paper Path

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper path Paper path 4036ma102c0...

  • Page 28: Image Creation Process

    Image creation process QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Image creation process [1] Photoelectric Conversion [2] IR Image Processing [10] Paper Separation [9] 2nd Image Transfer [11] Transfer Belt Cleaning [8] 1st Image Transfer [12] PC Drum Cleaning [4] PC Drum [13] Main Erase [7] Developing...
  • Page 29 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Image creation process • The paper, which has undergone the 2nd image transfer process, is neu- [10] Paper Separation tralized so that it can be properly separated from the Transfer Belt by the Paper Separator Claws.

  • Page 31: Ii Composition/Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Overall composition II Composition/Operation Overall composition Timing chart at machine power up Temperature Control Power Switch ON Fusing Pressure Roller Heater Lamp (H3) Heating Roller Heater Lamp/1 (H1) 100°C Fusing Pressure Roller Pressure/ Retraction Pressure Retraction...

  • Page 32: Control Block Diagram

    Overall composition QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Control block diagram Scanner Section Exposure Lamp CCD Sensor Inverter Board (FL201) Board (PWB-A) Scanner Motor Drive Board (PWB-IC) Image Processing Board (PWB-C) DF-601 Scanner Motor (M201) Panel Printer Section MFP Control Board (PWB-MFP) Control Board (PWB-MC) Paper Take-...

  • Page 33: Scanner Section (Ir Section)

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Scanner section (IR section) Scanner section (IR section) Composition 4036ma2110c0 4036ma2501c0 [10] [11] [13] [12] 4036ma2001c1...
  • Page 34 Scanner section (IR section) QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Name Function/System [1] Original Cover Angle Sensor (PC202) • Validates or resets the size of the original. [2] Original Size Sensor FD1 (PC203) • Detects the original of a small size in the FD direction. [3] Scanner Motor Drive Board (PWB-IC) •...

  • Page 35: Drive

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Scanner section (IR section) Drive 4036ma2002c1 Scanner Drive Cable/R Scanner Motor Mirror Unit Scanner Drive Cable/F Exposure Unit Scanner Home Sensor Operation 3.3.1 Scan and Exposure Lamp control A. When the Power Switch is turned ON 1.

  • Page 36: Original Size Detection Control

    Scanner section (IR section) QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 B. When the Start key is pressed 1. The Exposure Lamp turns ON when the Start key is pressed. 2. The gain adjustment is made when the Exposure Unit moves past the point under the shading sheet.
  • Page 37 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Scanner section (IR section) • The Image Processing Board determines the size of the original based on the combina- tion of detection made by each of the Original Size Sensors, whether or not there is an original loaded.
  • Page 38 Scanner section (IR section) QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Inch Area - Standard Original Size Determined 11 × 17 – 8.5 × 14 – – 8.5 × 11R – – – 8.5 × 11 – – – –...

  • Page 39: Write Section (Ph Section)

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Write section (PH section) Write section (PH section) Composition 4036ma2218c0 4036ma2502c0 4036ma2219c0 Name Function/System LED Unit • Four LED assemblies are integrated into a single unit. • The rays of light emitted by the LED chips are brought to a focus SELFOC Lens on the surface of the PC Drum to form a full-size image.

  • Page 40: Operation

    Write section (PH section) QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Operation 4.2.1 Outline • Each of the PC Drums is irradiated with LED light and an electrostatic latent image is thereby formed. • The LED print head is a fixed scanning type exposure system that includes approx. 7,700 LED chips (600 dpi) arranged in the main scanning direction and a SELFOC lens array, or SLA that brings rays of light emitted by the LED chips to a focus on the surface of the PC Drum to form a full-size image.

  • Page 41: Color Shift Correction System

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Write section (PH section) 4.2.2 Color Shift Correction System • In a tandem engine, in which an independent image reproduction process is provided for each of the four different colors of toner. Incorrect color registration, or color shift, is therefore more likely to occur due to each of the LED assemblies being out of correct position.

  • Page 42: Imaging Unit Section (Iu Section)

    Imaging Unit section (IU section) QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Imaging Unit section (IU section) Composition 4036ma2130c0 4036ma2503c0 4036ma2239c0 Name Function/System • Forms an image of each of different colors. PC Drum/Y, M, C, Bk • OPC drum (φ30 mm) Cleaning Blade •...

  • Page 43: Drive

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Imaging Unit section (IU section) Drive 4036ma2008c1 4036ma2007c1 Developing Clutch/Bk (CL2) Color Developing Motor (M6) Bk PC Motor (M7) Color PC Drum Motor (M5) 2-13...

  • Page 44: Operation

    Imaging Unit section (IU section) QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Operation 5.3.1 IU Life control • Each IU has EEPROM that detects a new IU and keeps track of the service life of the IU. A. New IU detection •...

  • Page 45: Photo Conductor Section

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Photo Conductor section Photo Conductor section Composition Charge Generating Layer (CGL) Charge Transport Layer (CTL) Aluminum Cylinder 4036ma2338c0 4036ma2543c0 Name Function/System • Forms an image of each of different colors. PC Drum/Y, M, C, Bk •...

  • Page 46: Operation

    Photo Conductor section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Operation 6.3.1 PC Drum Drive mechanism • Two independent PC Drum motors are used for the drive mechanism to suppress incor- rect color registration and uneven pitch. • The Color PC Drum Motor drives the PC Drums/Y, M, and C, while the Bk PC Motor drives the PC Drum/Bk.

  • Page 47: Pc Drum Small Amount Rotation Control

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Photo Conductor section 6.3.3 PC Drum small amount rotation control • Humidity around the IU can produce a difference in sensitivity among different PC Drums. This could lead to drum memory, allowing black bands to occur in the image. In addition, ozone stagnant in areas near the PC Drum Charge Corona reduces sensitivity of the PC Drums, causing white bands to occur in the image.

  • Page 48: Charge Corona Section

    Charge Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Charge Corona section 4036ma2130c0 4036ma2506c0 4036ma2138c0 4036ma2009c1 Name Function/System Corona Wire • Comb electrode type • For cleaning the corona wire Corona Wire Cleaning Lever • Slide out to clean the corona wire. Grid Mesh •...

  • Page 49: Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Charge Corona section Operation 7.1.1 PC Drum Charge Corona ON/OFF control • The grid voltage (VG) applied to the Grid Mesh is controlled through the image stabiliza- tion control. Color PC Drum Motor Energized Bk PC Motor Energized Drum Charge Corona Bias Y, M, C Drum Charge Corona Bias Bk...

  • Page 50: Developing Section

    Developing section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Developing section Composition 4036ma2139c0 4036ma2130c0 4036ma2011c1 4036ma2010c1 Name Function/System [1] Doctor Blade • Controls the height of the developer brush on the Developing Roller Supply/Agitating/Convey- • Vertical two-shaft circulating system that employs screws having a ing Screws small diameter arranged in the vertical direction •...

  • Page 51: Drive

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Developing section Drive 4036ma2604c0 4036ma2603c0 PC Drum/Bk Bk PC Motor (M7) Developing Roller PC Drum/Y Toner Collecting Screw Color Developing Motor (M6) Supply/Agitating/Conveying Screws Color PC Drum Motor (M5) Developing Clutch/Bk (CL2) 2-21...

  • Page 52: Operation

    5. The Toner sticks to the electrostatic latent image on the surface of the PC Drum. The developer that is left on the Sleeve is returned to the upper screw by the magnetic pole positioning of the Developing Roller. It is then conveyed to the front side of the Develop- ing Unit.

  • Page 53: Developing Bias

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Developing section 8.3.3 Developing bias • The developing bias voltage (Vb) is applied to the Developing Roller so that an adequate amount of toner is attracted onto the surface of the PC Drum. •...

  • Page 54: Atdc Sensor Control

    Developing section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 8.3.6 ATDC Sensor control • The ATDC Sensor is mounted on the underside of each of the Developing Sections. The sensor for C, M, and Y is an optical type, while that for Bk is a magnetic type. Each of these sensors detects toner-to-carrier ratio (T/C) of the developer.
  • Page 55 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Developing section C. ATDC window bias • Since the optical ATDC Sensor is used for C, M, and Y, a bias is applied to the ATDC win- dow to prevent toner from sticking to it. No bias is applied to the ATDC Sensor for Bk, which is the magnetic type.

  • Page 56: Toner Supply Section

    Toner Supply section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Toner Supply section Composition 4036ma2143c0 4036ma2510c0 [11] [12] [13] [10] 4036ma2511c0 [14] 4036ma2512c1 Name Function/System Cartridge/Y • Replenishes the supply of Y toner Cartridge/M • Replenishes the supply of M toner Cartridge/C •...

  • Page 57: Drive

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Toner Supply section Name Function/System Toner Set Sensor/M • Detects Cartridge/M as it is loaded in position Toner Set Sensor/Y • Detects Cartridge/Y as it is loaded in position • Drives the Agitating Blades and Metering Rollers of Cartridges/Y and M Toner Supply Motor Y/M (M4) •...

  • Page 58: Operation

    Toner Supply section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Operation 9.3.1 Toner Replenishing mechanism/control A. Toner replenishing mechanism • Toner is supplied from the Toner Cartridge of each color to the Imaging Unit of each color according to the T/C detected by the corresponding ATDC Sensor. •...

  • Page 59: Toner Near-Empty And Toner Empty Detection Control

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Toner Supply section 9.3.2 Toner Near-Empty and Toner Empty detection control • A toner near-empty/empty condition is detected by the Toner Near-Empty Sensor PQ and LED mounted on each of the Toner Cartridges. •...

  • Page 60: Shutter Mechanism

    Toner Supply section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 9.3.3 Shutter mechanism • To prevent toner from being spilled when the Toner Cartridge is removed from the machine, there is a shutter mechanism provided. When the Toner Cartridge is installed in the machine, the shutter opens.

  • Page 61: 10. Transfer Corona Section

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Transfer Corona section 10. Transfer Corona section 10.1 Composition 10.1.1 1st Image Transfer section 4036ma2152c0 4036ma2518c0 [10] [11] [12] 4036ma2606c0 [13] [15] 4036ma2157c0 [14] 2-31...
  • Page 62 Transfer Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Name Function/System Paper Separator Claws • Separate paper • Transfers the toner image from the PC Drum/C onto the Transfer Belt (1st image transfer) 1st Image Transfer Roller/C • Image Transfer Roller system •...

  • Page 63: 2Nd Image Transfer Section

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Transfer Corona section 10.1.2 2nd Image Transfer section 4036ma2019c1 4036ma2243c0 4036ma2154c0 4036ma2542c0 Name Function/System • Transfers the toner images in four colors of toner on the Transfer Belt to the paper 2nd Image Transfer Roller •...

  • Page 64: 10.2 Drive

    Transfer Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 10.2 Drive 10.2.1 1st Image Transfer section 4036ma2020c1 [10] 4036ma2158c0 Transfer Belt 1st Image Transfer Roller/M Main Motor (M1) 1st Image Transfer Retraction Position Sensor (PC12) Sliding Plate 1st Image Transfer Pressure/Retraction Motor (M11) 1st Image Transfer Roller/C 1st Image Transfer Roller/Y [10] 1st Image Transfer Roller/Bk...

  • Page 65: 2Nd Image Transfer Section

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Transfer Corona section 10.2.2 2nd Image Transfer section 4036ma2156c0 2nd Image Transfer Roller Pressure Lever 2nd Image Transfer Pressure/Retraction Sensor AIDC/Registration Sensor/1 (PC8) (PC29) 2nd Image Transfer Pressure/Retraction Motor (M13) Shutter AIDC/Registration Sensor/2 (PC9) 10.3 Operation 10.3.1 Transfer Belt speed control...

  • Page 66: 1St Image Transfer Roller Mechanism

    Transfer Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 10.3.2 1st Image Transfer Roller mechanism • The machine is provided with a mechanism that presses the 1st Image Transfer Rollers up against the inside of the Transfer Belt during the 1st image transfer stage. The 1st Image Transfer Pressure/Retraction Motor (M11) provides the drive for this operation.
  • Page 67 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Transfer Corona section B. Pressure position changing mechanism • To extend the service life of the PC Drum/Y, M, C, the pressure position of the 1st Image Transfer Roller is changed between the monochrome mode and the color mode. In the monochrome mode, the 1st Image Transfer Roller/Y, M, C is left in the retracted position and the PC Drum/Y, M, C is stopped.
  • Page 68 Transfer Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 C. Retraction mechanism • At the same time that the pressure position is changed, the Retraction Roller moves up and down to change the position of the image transfer on the surface of the Transfer Belt to suit the specific mode, either monochrome or color.

  • Page 69: 2Nd Image Transfer Roller Pressure Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Transfer Corona section 10.3.3 2nd Image Transfer Roller pressure mechanism • The machine is provided with a mechanism that presses the 2nd Image Transfer Roller up against, and retracts it from, the Transfer Belt to prevent the 2nd Image Transfer Roller from being dirtied due to patterns produced for purposes other than an actual copying operation, which may be a pattern produced during the image stabilization sequence or other function.

  • Page 70: Aidc Sensor Shutter Mechanism

    Transfer Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 • Operation Timing Start Key ON Paper moves past 2nd Image Transfer Roller Main Motor (M1) 2nd Image Transfer Pressure/ Retraction Motor (M13) 2nd Image Transfer Pressure/ Retraction Sensor (PC29) 4036ma2170c0 10.3.4 AIDC Sensor Shutter mechanism...

  • Page 71: Atvc (Auto Transfer Voltage Control)

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Transfer Corona section 10.3.5 ATVC (Auto Transfer Voltage Control) • To optimize image transfer output, the machine is provided with ATVC control, or Auto Transfer Voltage Control. The control lets a constant current flow through each of the Image Transfer Rollers.

  • Page 72: Transfer Belt Cleaning

    Transfer Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 10.3.6 Transfer Belt cleaning • To scrape residual toner off the surface of the Transfer Belt, the Transfer Belt is provided with a Cleaning Brush and a Charging Brush. •...

  • Page 73: 2Nd Image Transfer Roller Cleaning

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Transfer Corona section 10.3.7 2nd Image Transfer Roller cleaning • To remove residual toner off the surface of the 2nd Image Transfer Roller, a +/- DC bias is applied alternately to the roller, thereby moving the residual toner to the surface of the Transfer Belt.

  • Page 74: Charge Neutralization And Separation Of Paper

    Transfer Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 10.3.8 Charge neutralization and separation of paper • To neutralize any charge potential left in the paper which has undergone the 2nd image transfer stage, a Charge Neutralizing Cloth is installed to the guide plate after the 2nd Image Transfer Roller.

  • Page 75: Detection Of New Transfer Belt Unit

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Transfer Corona section 10.3.9 Detection of New Transfer Belt Unit • When a new Transfer Belt Unit is installed in the machine, the life counter is automatically cleared through new unit detection. •...

  • Page 76: Acs Control

    Transfer Corona section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 10.3.10 ACS control • This machine adopts ACS control, which controls switching of the print mode according to the number of the continuous monochrome originals to achieve both a higher copying productivity and longer service life of the consumables.

  • Page 77: 11. Toner Collecting Section

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Toner Collecting section 11. Toner Collecting section 11.1 Composition 4036ma2180c0 4036ma2026c1 Name Function/System • Conveys waste toner from the IU to the Toner Col- IU Toner Collecting Screw lecting Section. • Screw type •...

  • Page 78: 11.2 Drive

    Toner Collecting section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 11.2 Drive 4036ma2027c1 Bk PC Motor (M7) Transfer Belt Toner Collecting Screw IU Toner Collecting Screw Toner Collecting Roller Cleaning Brush Cleaning Brush Motor (M22) 2-48...

  • Page 79: 11.3 Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Toner Collecting section 11.3 Operation 11.3.1 Toner collecting mechanism • Toner collected by the Cleaning Brush of the Transfer Belt and waste toner in each of the Imaging Units are conveyed by the corresponding Toner Collecting Screws to the Waste Toner Bottle.

  • Page 80: Waste Toner Near-Full/Full Detection Control

    Toner Collecting section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 11.3.3 Waste Toner Near-Full/Full detection control A. Waste toner near-full detection control • An optical sensor is used to detect waste toner. When the sensor is blocked for a given period of time, the machine determines that the Waste Toner Bottle is nearly full of waste toner.

  • Page 81: 12. Paper Feed Section

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper feed section 12. Paper feed section 12.1 Composition 12.1.1 Tray1 4036ma2033c1 4036ma2111c0 [13] [12] [11] [10] 4036ma2034c1 Name Function/System Tray1 Separator Roller • Prevents double feed of paper from Tray1 Tray1 Paper Take-up Roller •...

  • Page 82: Tray2

    Paper feed section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Name Function/System [11] Tray1 Paper Size Board (PWB-I1) • Detects the paper size in the length direction in Tray1 Tray1 Paper Near-Empty Sensor [12] • Detects the paper level in Tray1 (PC13) [13] Tray1 Set Sensor (PC14)
  • Page 83 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper feed section Name Function/System Tray2 Pick-up Roller • Takes up a sheet of paper from Tray2 Tray2 Lift-up Sensor (PC105) • Detects the upper limit of paper stack in Tray2 Polyethylene Sheet •...

  • Page 84: 12.2 Drive

    Paper feed section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 12.2 Drive 12.2.1 Tray1 4036ma2036c1 Tray1 Paper Take-up Roller Main Motor (M1) Tray1 Paper Feed Clutch (CL1) 12.2.2 Tray2 4036ma2037c1 Vertical Transport Roller/2 Tray2 Vertical Transport Motor (M103) Tray2 Paper Take-up Roller Tray2 Lift-up Motor (M101) Tray2 Pick-up Roller Tray2 Paper Feed Motor (M102)

  • Page 85: 12.3 Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper feed section 12.3 Operation 12.3.1 Paper Take-up control (Tray1) Start Key ON Synchronizing Roller ON Synchronizing Roller ON Main Motor (M1) Tray1 Paper Feed Clutch (CL1) Intermediate Transport Motor (M14) Synchronizing Roller Clutch (CL3) Synchronizing Roller Sensor (PC28) 4036ma2121c0 12.3.2...

  • Page 86: Paper Supply Level Detection Control

    Paper feed section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 12.3.4 Paper supply level detection control • There is a window in the front cover of the cassette for indicating the paper supply level. • When the Paper Lifting Plate goes up, a red lever appears in the window. The lower the level of the paper stack, the more the red portion is visible.

  • Page 87: Tray1 Paper Type Detting

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper feed section 12.3.6 Tray1 paper type detting • Tray1 is an MPC that requires that the type of paper be set. • Changing the position of the Paper Type Setting Dial selects different controls on the machine side as detailed below.

  • Page 88: Paper Size Detection Control

    Paper feed section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 12.3.7 Paper size detection control • The width size (CD) and length size (FD) of the paper are detected. The paper size is determined based on the combination of these two sizes detected. A.
  • Page 89 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper feed section Inch Area Tray1 Paper Size Board (PWB-I1) Tray1 CD Paper Size Paper Size Sensor (PC3) 5.5 × 8.5R 8.5 × 11 8.5 × 11R Executive Executive R 5.5 × 8.5 8.5×...
  • Page 90 Paper feed section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 B. Tray2 Tray2 Paper Size Board (PWB-I2) Tray2 CD Paper Tray2 CD Paper Size Sensor/S Size Sensor/L Paper Size (PC101) (PC102) ON/OFF A5R *1 ON/OFF ON/OFF ON/OFF 5.5 × 8.5 *2 Letter Letter R Legal...

  • Page 91: Tray2 Paper Lifting Motion Control

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper feed section 12.3.8 Tray2 paper lifting motion control A. When Tray2 is slid in • The paper lifting motion is started if the Tray2 Lift-up Sensor is unblocked with Tray2 slid in the machine.

  • Page 92: 13. Bypass Section

    Bypass section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 13. Bypass section 13.1 Composition 4036ma2528c0 4036ma2122c0 4036ma2125c0 4036ma2124c0 Name Function/System Bypass FD Paper Size Sensor/4 • Detects the Bypass paper size in the length direction (PC114) Bypass FD Paper Size Sensor/3 •...

  • Page 93: 13.2 Drive

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Bypass section 13.2 Drive 4036ma2529c0 4036ma2047c1 Bypass Lift-up Sensor (PC115) Bypass Paper Take-up Roller Bypass Paper Feed Clutch (CL101) Tray2 Vertical Transport Motor (M103) Bypass Paper Pick-up Solenoid (SL101) 2-63...

  • Page 94: 13.3 Operation

    Bypass section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 13.3 Operation 13.3.1 Bypass Paper Take-up control Start Key ON Move to Standby Position Tray2 Vertical Transport Motor (M103) Bypass Paper Pick-up Solenoid (SL101) Bypass Lift-up Sensor (PC115) Bypass Paper Feed Clutch (CL101) Tray2 Vertical Transport Sensor (PC108) 4036ma2123c0 13.3.2...
  • Page 95 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Bypass section Bypass Lift-up Bypass Paper Sensor (PC115) Take-up Roller Bypass Paper Pick-up Solenoid (SL101) 4036ma2126c0 4036ma2531c0 Bypass Lift-up Sensor (PC115) 4036ma2236c0 Paper Lifting Plate Paper Fed out Start Key ON Tray2 Vertical Transport Motor (M103) Bypass Paper Pick-up Solenoid (SL101) Bypass Paper Feed Clutch (CL101) Bypass Lift-up Sensor (PC115)
  • Page 96 Bypass section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 13.3.4 Paper size detection • The size of the paper loaded in the Bypass Section is detected by the combination of ON or OFF positions of the four Bypass FD Paper Size Sensors and the Bypass Paper Size Unit. •...
  • Page 97 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Bypass section Inch Area Bypass FD Bypass FD Bypass FD Bypass FD Bypass Paper Size Paper Size Paper Size Paper Size Paper Size Unit (VR1) Paper Size Sensor/1 Sensor/2 Sensor/3 Sensor/4 Detected Width (mm) (PC111) (PC112)

  • Page 98: 14.1 Composition

    Conveyance section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 14. Conveyance section 14.1 Composition 4036ma2127c0 4036ma2534c0 4036ma2535c0 Name Function/System • Transports paper taken up from Tray1 or Tray2 to the Transport Roller Synchronizing Roller. • Drives the Transport Roller Intermediate Transport Motor (M14) •...

  • Page 99: Synchronizing Roller Section

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Synchronizing Roller section 15. Synchronizing Roller section 15.1 Composition 4036ma2128c0 4036ma2536c0 Name Function/System • Removes paper dust off the surface of the Synchroniz- ing Roller Paper Dust Remover • Paper dust is attracted onto the surface of the roller through static attraction and the Paper Dust Remover removes the paper dust from the roller.
  • Page 100 Synchronizing Roller section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 15.3 Operation 15.3.1 Synchronizing Roller control • A loop is formed in the paper between the Transport Roller and Synchronizing Roller dur- ing the paper transportation to correct skewed paper feeding. The amount of the paper loop can be adjusted using "Loop Adjust"...
  • Page 101 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Synchronizing Roller section 15.3.2 OHP detection • To prevent failed copies of OHP transparencies, whether or not the paper type fed through is a piece of OHP transparencies is detected using the OHP Sensor. •...

  • Page 102: Fusing Section

    Fusing section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 16. Fusing section 16.1 Composition 4036ma2102c0 4036ma2537c0 [13] [12] [11] [10] 4036ma2029c1 Name Function/System • Separates paper properly to prevent it from winding around the Upper Paper Separator Claw Fusing Roller. •...
  • Page 103 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Fusing section Name Function/System • Controls the temperature of the Heating Roller Heating Roller Thermistor/2 • Positioned in a contact fashion (at the front of the Heating Roller (TH2) inside the Fusing Belt) •...
  • Page 104 Fusing section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 16.3 Operation 16.3.1 Fusing Roller drive control A. Speed change control • Drive for the Fusing Unit is provided by the Fusing Drive Motor. • To prevent poor fusing performance, the speed of the Fusing Drive Motor is changed in three steps according to the type of paper used and the copy mode.
  • Page 105 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Fusing section 1. The fusing speed in the beginnings is set to the higher speed, thereby forming a loop in the paper between the 2nd Image Transfer Roller and the Fusing Roller. 2.
  • Page 106 Fusing section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 16.3.2 Fusing Roller pressure/retraction mechanism • To ensure prolonged durability of the Fusing Belt, the Pressure Roller is retracted from the Fusing Belt during any time other than a print cycle. (The roller is, however, retracted during a print cycle using envelopes.) •...
  • Page 107 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Fusing section 16.3.3 Fusing temperature control • The surface temperatures of the Heating Roller and Pressure Roller are detected using thermistors and the corresponding Heater Lamps are turned ON or OFF as necessary to maintain the set fusing temperature.
  • Page 108 Fusing section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Heating Roller Pressure Roller Warm-up completed state Remarks Temperature (°C) Temperature (°C) If a multi-print cycle is run immediately after the warm- up cycle has been com- First-in-the-morning warm-up pleted, the machine pro- completed (Fusing Pressure duces one printed page only Roller temperature is 60 °C or...
  • Page 109 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Fusing section D. Power Save • Temperature control is provided with a decreased fusing temperature so that power con- sumption in the standby state can be minimized. Mode Heating Roller Set Temperature (°C) Pressure Roller Set Temperature (°C) Power Save 16.3.4...
  • Page 110 Fusing section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 HETER2 HETER1 HETER3 Hard Protection 4036ma2109c0 2-80...
  • Page 111 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Fusing section 16.3.5 Detection of a New Fusing Unit • When a new Fusing Unit is installed in the machine, the life counter is automatically cleared through the machine’s capability of detecting a new Fusing Unit. •...

  • Page 112: Paper Exit Section

    Paper exit section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 17. Paper exit section 17.1 Composition 4036ma2550c0 4036ma2246c0 4036ma2245c0 Name Function/System Paper Exit Roller/1 • Feeds paper out of the machine onto the Paper Exit Tray. Exit Sensor (PC30) •...
  • Page 113 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper exit section 17.2 Drive 4036ma2016c1 Main Motor (M1) Paper Exit Roller/2 Paper Exit Roller/1 2-83...

  • Page 114: Image Stabilization Control

    Image stabilization control QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 18. Image stabilization control 18.1 Overview • The machine provides the following image stabilization control to ensure stabilized copy image. Purpose Control Control Means • AIDC intensity control • Max. density control To stabilize image density AIDC Sensor •...

  • Page 115: Operation Timing

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Image stabilization control 18.2 Operation 18.2.1 Background margin control • The PC Drum Charge Corona grid voltage (Vg) is set for the pattern based on the infor- mation provided by the temperature sensor, the PC Drum rotation time, the system speed, and the target surface potential.

  • Page 116: Operation Flow

    Image stabilization control QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 18.4 Operation flow Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Background Background Background Background margin control margin control margin control margin control AIDC intensity AIDC intensity AIDC intensity AIDC intensity control...

  • Page 117: Image Processing

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Image processing 19. Image processing 19.1 Scanner section image processing block diagram 1. Photoelectric conversion CCD Sensor Board 2. Analog-to-digital conversion 3. Shading correction Image Processing Board 4. Line-to-line variation correction 5. Zoom/movement processing 6.
  • Page 118 Image processing QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 6. The scanning are is divided into multiple blocks. The ratio of color or monochrome is calculated for each of these blocks. The machine then determines whether the entire original is colored or monochrome. A histogram of lightness is also created for later AE processing.

  • Page 119: Write Section Image Processing Block Diagram

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Image processing 19.2 Write section image processing block diagram From Scanner Section MFP Control Board 2. Color correction processing (reflection/density conversion, 1. Image area discrimination masking, UCR/BP) 3. Miscellaneous processing (improved reproduction of black text, edge emphasis, edge expansion, smoothing, color balance, and γ...
  • Page 120 Image processing QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 • The following detail the image processing operations performed by MFP Control Board on the Write Section. 1. Each image area, whether it is a color edge area, black edge area, dot area, or a con- tinuous gradation area, is discriminated to optimize edge emphasis and smoothing just right for the image.

  • Page 121: Other Control

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Other control 20. Other control 20.1 Fan control 20.1.1 Construction Draws outside air in Exhausts heat 4036ma2049c1 Name Function/System Fusing Cooling Fan Motor/2 (M15) • Cools the Exit Sections Fusing Cooling Fan Motor/3 (M16) • Cools the Exit Sections Suction Fan Motor (M12) •...
  • Page 122 Other control QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 20.1.2 Operation A. Fan control Motor Name Paper Passage Mode Control Conditions • Turns at full speed when the Color PC Drum Motor (M5) or Bk PC Motor (M7) is energized Power Supply Cooling –...

  • Page 123: Power Distribution Control At Machine Power Up

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Other control 20.2 Power distribution control at machine power up 20.2.1 Parts operated when the Power Switch is turned ON • When the Power Switch is turned ON, the Control Board detects it and sends a control signal to the DC Power Supply.

  • Page 124: Counter Control

    Other control QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 20.3 Counter control 20.3.1 Construction Mechanical Counter Total Counter (option) PWB-MFP Key Counter (option) Electronic Counter Vender (option) PWB-MC 4036ma2195c0 Name Function/System • Shows the cumulative number of copies made in all copy modes Total Counter •...
  • Page 125 DEVELOP SERVICE MANUAL THEORY OF OPERATION DF-601...
  • Page 127 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline Product specification .................... 1-1 Type ........................1-1 Functions ......................1-1 Paper type ......................1-1 Machine specifications..................1-2 Operating environment ..................1-2 Mixed original feed ....................1-2 Mixed original feed chart..................1-2 Paper feed prohibited originals ................
  • Page 128 QC 2235plus Theory of Operation Ver1.0 Mar. 2004...

  • Page 129: Product Specification

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specification I Outline Product specification Type Name Duplexing Document Feeder Paper Take-Up Paper Take-Up from top of stack Transport Endless Belt Transport Mode Type Turnover Loop Turnover Mode U-turn Turnover + Switchback U-Turn Turnover Paper Exit Mode (only in 1-Sided Mode) Installation...

  • Page 130: Machine Specifications

    Mixed original feed QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Machine specifications Power Requirements DC24V (supplied from the main unit) DC5V (generated within the DF-601) Max. Power 60 W or less Consumption 586 mm (W) × 519 mm (D) × 135 mm (H) Dimensions 23 inch (W) ×...

  • Page 131: Paper Feed Prohibited Originals

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mixed original feed Paper feed prohibited originals • If fed, trouble occurrence will be highly possible. Type of Original Possible Trouble Take-up failure, damaged sheet, defective drive Sheets stapled or clipped together mechanism due to jammed staples or clips Sheets glued together Take-up failure, damaged sheet...

  • Page 133: Ii Composition/Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Overall composition II Composition/Operation Overall composition Hookup Cord Turnover Cover Take-Up Cover Document Guide Document Feed Tray Transport Belt Exit Cover Magnet...

  • Page 134: Drive System

    Drive system QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Drive system Turnover/Exit Drive Mechanism Document Transport Drive Mechanism Document Take-Up/Feeding Drive Mechanism...

  • Page 135: Paper Path

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper path Paper path Single-sided Document Mode Double-sided Document Mode...

  • Page 136: Mechanical Operations

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Document pick-up mechanism • The Document Pick-Up Section consists of the Document Stoppers, Pick-Up Rollers, Take-Up Roller and Separation Roller, and this section is driven by the Take-Up Motor. •...

  • Page 137: Document Take-Up/Transport Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Document take-up/transport mechanism • The Pick-Up and Take-Up Rollers are rotated by the Take-Up Motor and an original is taken-up and transported to the Registration Roller. • Then, the original is transported onto the Original Glass by the Registration Roller driven by the Take-Up Motor, and the Transport Belt driven by the Transport Motor.
  • Page 138 Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 A. Document take-up operation flow Registration Clutch: ON ↓ Take-Up Motor: Forward Rotation ↓ Pick-Up Rollers go down and rotated via timing belt & gears ↓ At the same time, Document Stoppers go up ↓...

  • Page 139: Document Exit Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Document exit mechanism 4.3.1 Single-sided document mode • The original transported by the Transport Belt is sent to the switchback section and then ejected onto the Exit Tray with its face-down in order to keep the original pages in proper order.

  • Page 140: Exit Operation Flow

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.3.3 Exit operation flow A. Document exit motion in single-sided mode Exit Motor: Forward Rotation ↓ Transport Motor: Forward Rotation ↓ The original is transported to the switchback section. ↓ Transport Motor: OFF after the original leaves from the Transport Belt ↓...

  • Page 141: Turnover Mechanism (Two-Sided Mode)

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Turnover mechanism (two-sided mode) • In the Double-Sided Mode, an original which has its 1st side scanned is turned-over and then transported to the scan position again for the 2nd side scanning. Exit Motor (M3-DF) Turnover Gate Turnover Solenoid...

  • Page 142: Raised/Lowered Position Detecting Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Raised/lowered position detecting mechanism 4.5.1 Document size detection • The 15 degree Open Detection Mechanism enables the main unit to detect the document size when the RADF is used as the Original Cover of the main unit, there is the Lever Actuator provided in the RADF body that blocks or unblocks a sensor to initiate a recon- firmation of the original size as read by the original size detection sensors.
  • Page 143 DEVELOP SERVICE MANUAL THEORY OF OPERATION PC-101/PC-201...
  • Page 145 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline Product specifications ..................1-1 Type ........................1-1 Paper type ......................1-1 Machine specifications..................1-1 Operating environment ..................1-1 Composition/Operation Overall composition....................2-1 Drive system ......................2-2 Mechanical operations ..................2-3 Vertical transport drive mechanism ..............
  • Page 146 QC 2235plus Theory of Operation Ver1.0 Mar. 2004...

  • Page 147: Product Specifications

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specifications I Outline Product specifications Type Name 2 way Paper Take-Up Cabinet Type Front loading type 2 way paper take-up device Installation Desk type Document Alignment Center Paper type Plain paper 56 to 110 g/m (15 to 29-1/4 lb) Paper Type...

  • Page 149: Ii Composition/Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Overall composition II Composition/Operation Overall composition <PC-101> <PC-201> Lifting Plate Right Door Trailing Edge Stop Edge Guides...

  • Page 150: Drive System

    Drive system QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Drive system Vertical Transport <PC-101> Drive Mechanism Vertical Transport <PC-201> Drive Mechanism...

  • Page 151: Mechanical Operations

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Mechanical operations Vertical transport drive mechanism • The Paper Feed Motor drives the Pick-up Roller and Paper Take-up Roller to take up and feed a sheet of paper into the main unit. •...

  • Page 152: Paper Lifting Motion

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper lifting motion • When the drawer is slid into the main unit and the Set Sensor is activated, the Lift-up Motor starts rotating to raise the Paper Lifting Plate. •...

  • Page 153: Paper Size Detection

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Paper size detection • When the Trailing Edge Stop of the drawer is moved, the circular plate located on the bot- tom of the drawer turns, allowing the four FD Paper Size Sensors on the FD Paper Size Detection Board.

  • Page 154: Paper Level Indicator Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper level indicator mechanism • All drawers now use the universal paper size tray for greater functionality. • There is a window in the front cover of the drawer that serves as the Paper Level Indica- tor showing the amount of paper that is still available for use.
  • Page 155 DEVELOP SERVICE MANUAL THEORY OF OPERATION PC-401...
  • Page 157 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline Product specification .................... 1-1 Type ........................1-1 Paper type ......................1-1 Machine specifications..................1-1 Operating environment ..................1-1 Composition/Operation Overall composition....................2-1 Drive system ......................2-2 Mechanical operations ..................2-3 Vertical transport drive mechanism ..............
  • Page 158 QC 2235plus Theory of Operation Ver1.0 Mar. 2004...

  • Page 159: Product Specification

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specification I Outline Product specification Type Name Large Capacity Tray Type Front loading type LCT Installation Desk type Document Alignment Center Paper type Plain paper 56 to 110 g/m (15 to 29-1/4 lb) Paper Type Recycled paper 60 to 90 g/m...

  • Page 161: Ii Composition/Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Overall composition II Composition/Operation Overall composition Sub Tray Right Door Main Tray Vertical Transport Rolls Vertical Transport Rollers Front Cover...

  • Page 162: Drive System

    Drive system QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Drive system Vertical Transport Drive Mechanism Main Tray Lift-Up Drive Mechanism Shifter Gate Drive Mechanism Shifter Drive Mechanism...

  • Page 163: Mechanical Operations

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Mechanical operations Vertical transport drive mechanism • The Paper Feed Motor drives the Pick-up Roller and Paper Take-up Roller to take up and feed a sheet of paper into the main unit. •...

  • Page 164: Elevator Tray Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Elevator tray mechanism • The Main Tray is suspended by the cables at the front and rear. As the Elevator Motor turns forward or backward, the cables are wound to raise or lower the tray. •...

  • Page 165: Shift Gate/Shifter Drive Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Shift gate/shifter drive mechanism • If the Main Tray runs out of paper, while the Sub Tray is loaded with paper, the paper stack on the Sub Tray is moved to the Main Tray. •...

  • Page 166: Paper Empty Detection

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper empty detection • Paper empty detection of Main Tray is performed by Paper Empty Board. • Paper empty detection of Sub Tray is performed by Shift Tray Paper Empty Sensor. Transport Roller Motor Paper Feed Motor (M1-LCT) (M2-LCT)
  • Page 167 DEVELOP SERVICE MANUAL THEORY OF OPERATION AD-501...
  • Page 169 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline Product specifications ..................1-1 Type ........................1-1 Paper type ......................1-1 Machine specifications..................1-1 Operating environment ..................1-1 Composition/Operation Overall composition....................2-1 Center cross section .................... 2-2 Drive system ......................2-3 Mechanical operations ..................
  • Page 170 QC 2235plus Theory of Operation Ver1.0 Mar. 2004...

  • Page 171: Product Specifications

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specifications I Outline Product specifications Type Name Duplex Unit Type Switchback and Circulating Duplex Unit Installation Mounted on the right side door of main unit Document Alignment Center Paper type Paper Type Plain paper 60 to 90 g/m (16 to 24 lb)

  • Page 173: Ii Composition/Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Overall composition II Composition/Operation Overall composition Duplex Unit Door...

  • Page 174: Center Cross Section

    Center cross section QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Center cross section Duplex Unit Transport Roll 2 Duplex Unit Transport Roller 3 Duplex Unit Transport Roller 2 Duplex Unit Transport Roll 1 Duplex Unit Transport Roll 3 Duplex Unit Transport Roller 1...

  • Page 175: Drive System

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Drive system Drive system Switchback Drive Mechanism Duplex Unit Transport Drive Mechanism...

  • Page 176: Mechanical Operations

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Switchback mechanism 4.1.1 Switchback operation • The Paper Exit Roller of the main unit is used to subject the 1-sided print to a switchback sequence so that the 1-sided print is to be transported through the Duplex Unit. Feeding the Paper into Duplex Unit Paper Exit Roller...

  • Page 177: Transport And Duplex Paper Take-Up Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Transport and duplex paper take-up mechanism 4.2.1 Transport and duplex paper take-up operation • Drive for the Duplex Unit is provided by the Duplex Unit Transport Motor. Duplex Unit Transport Roller 1 Duplex Unit Transport Roller 2 Duplex Control Board (PWB-A DU)

  • Page 178: 2-Sided Printing Method

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 2-sided printing method • The following two types of 2-sided printing methods are available. 2-sided printing with a single sheet of paper resident in the system 2-Sided Printing Methods 2-sided printing with two sheets of paper resident in the system (FD length 215.9 mm or less) 4.3.1 Operations in 2-sided printing with a single sheet of paper resident in the...
  • Page 179 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Operation 5 • While feeding the first 2-sided print out of itself, the main unit carries out the first print cycle for the second sheet of paper to produce the print image of the fourth page of the original.
  • Page 180 Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.3.2 Operations in 2-sided printing with two sheets of paper resident in the sys- Operation 1 Paper Exit Roller • The first sheet of paper is taken up and fed in from the main unit drawer and the main unit starts the first print cycle to produce the print image of the second page of the original.
  • Page 181 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Operation 5 • While feeding the first 2-sided print out, main unit produces the print image of the 6th page of the original on the third sheet of paper. • The second sheet of paper will wait in front of the Duplex Unit Transport Roller 3 until the third sheet of paper has been operated switch back sequence.
  • Page 182 Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 • A4, 2 originals, 2 to 2 print mode Synchronizing Roller Sensor (PC28) Exit Sensor (PC30) Forward Forward Backward Forward Backward Rotation Rotation Rotation Rotation Rotation Switchback Motor (M1-DU) Duplex Unit Transport Motor (M2-DU) Duplex Unit Transport Sensor 2 (PC1-DU)
  • Page 183 DEVELOP SERVICE MANUAL THEORY OF OPERATION FS-501...
  • Page 185 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline Product specification .................... 1-1 Type ........................1-1 Functions ......................1-1 Paper type ......................1-1 1.3.1 Non-Sort ....................... 1-1 1.3.2 Sort/Group ....................1-1 1.3.3 Sort staple/Group staple................1-2 Stapling......................1-2 Sort and staple capacity ..................1-2 1.5.1 Stacking with no stapling, with the same size paper (80g/m2) .....
  • Page 186 QC 2235plus Theory of Operation Ver1.0 Mar. 2004...

  • Page 187: Product Specification

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specification I Outline Product specification Type Type Single Staple Finisher Installation Freestanding Document Alignment Center Supplies Staple Cartridge Option Job separator (JS-601) Functions Modes Non-Sort/ Sort/ Group/Sort Staple/ Group Staple Paper type 1.3.1 Non-Sort No.

  • Page 188: Sort Staple/Group Staple

    Product specification QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 1.3.3 Sort staple/Group staple No. of Sheets to Paper Type Paper Size Weight Tray Capacity Exit Tray be Stapled 60 to 90 g/m 1,000 sheets 16 to 24 lb (A4R, 8-1/2 × B5R/B5 to A3 11R or 30 sheets...

  • Page 189: Stacking With Stapling

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specification 1.5.2 Stacking with stapling • (Reference: Actual value) Determined by number of Sets or number of Sheets based on number of bindings. A. Number of stacked paper No. of Sheets to be Stapled No.

  • Page 191: Ii Composition/Operation

    QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Overall composition II Composition/Operation Overall composition Lower Front Cover Tray Upper Cover Elevator Tray Upper Front Cover Rear Cover...

  • Page 192: Center Cross Section

    Center cross section QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Center cross section [13] [14] [11] [10] [12] Entrance Roll Tray Exit Roll Lower Path Transport Roll Tray Exit Roller Upper Path Transport Roller [10] Lower Path Transport Roller Upper Path Transport Roll [11] Storage Roller Entrance Roller...

  • Page 193: Drive System

    QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Drive system Drive system Lower Paddle Motor (M9-FN) CD Aligning Motor (M5-FN) Stapling Unit Moving Motor (M6-FN) Shift Motor (M8-FN) Elevator Motor (M7-FN) Upper Entrance Motor (M4-FN) Entrance Motor (M1-FN) Lower Entrance Motor (M2-FN) Exit Roller/Rolls Spacing Motor (M13-FN) Storage Roller/Rolls...

  • Page 194: Mechanical Operations

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations Paper transport 4.1.1 Paper transport mechanism A. Entrance section paper transport mechanism • The Entrance Roller is turned to transport the paper into the Finisher as the Entrance Motor is energized.
  • Page 195 QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations B. 1 tray paper transport mechanism • Paper transport to the 1 Tray takes place when the Finisher is in the Non-Sort mode. • The Upper Path Transport Roller and 1 Tray Exit Roller turn to transport the paper into the 1 Tray as the motor is energized.
  • Page 196 Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 C. Finisher tray paper transport mechanism • Paper transport to the Finisher Tray takes place when the Finisher is in the Staple mode. • As the Lower Entrance Motor is energized, the Storage Roller turns to transport the paper toward the exit direction.
  • Page 197 QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations D. Elevator tray paper transport mechanism • Paper transport to the Elevator Tray takes place when the Finisher is in the Sort or Group mode. • As the motor is energized, the Exit Roller turns to transport the paper into the Elevator Tray.

  • Page 198: Paper Switchback Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 4.1.2 Paper switchback mechanism • When the last paper of the first print set is transported onto the Finisher Tray during a multi-print cycle in the Sort Staple mode, the first paper of the subsequent print set, which is to be next transported, undergoes a switchback sequence.

  • Page 199: Roller/Rolls Spacing Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations 4.1.3 Roller/rolls spacing mechanism A. Storage roller/rolls spacing mechanism • The Storage Roller briefly stops when the first sheet of paper completes a switchback sequence during a multi-print cycle in the Sort Staple mode. If, however, paper measures 217 mm or more in the FD direction, the leading edge of the second sheet of paper reaches the Storage Roller before the roller stops turning.

  • Page 200: Finisher Tray

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Finisher tray • Sheets of paper are properly aligned and stapled together on the Finisher Tray before being fed out into the Elevator Tray. Finisher Tray Elevator Tray 2-10...

  • Page 201: Paper Aligning Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations 4.2.1 Paper aligning mechanism • The Aligning Plate is moved and the Paddles are turned to align paper correctly for sta- pling. A. Aligning plate • The Aligning Plate is moved to align the paper in the crosswise direction with reference to the center position of the Finisher Tray.
  • Page 202 Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 B. Paddles • The Upper and Lower Paddles are turned to align the paper in the feeding direction. • The Upper Paddles are turned by the Upper Paddle Motor and Upper Paddle Solenoid. •...

  • Page 203: Stapling

    QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations Stapling 4.3.1 Stapling mechanism • The Stapling Unit performs the stapling action. • When the Stapling Motor turns, the Clinch Arm lowers. Then the Stapler moves up to drive a staple into paper and the staple is formed. •...

  • Page 204: Stapling Unit Moving Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 4.3.2 Stapling unit moving mechanism • Stapling Unit is moved by the Stapling Unit Moving Motor. • The Staple Home Position Sensor detects Stapling Unit at respective home positions. The Stapling Unit is moved with reference to this home position. Stapling Unit 1 Staple Home Position Sensor (PC14-FN) Stapling Unit Moving Motor (M6-FN)

  • Page 205: Staple Sheet Empty Detection

    QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations 4.3.3 Staple sheet empty detection • The Staple Empty Detecting Sensor is used to detect whether there is a staple sheet or not in the Staple Cartridge. • When there are about 20 staples left in the Staple Cartridge, a staple sheet empty condi- tion results and a staple-empty display is given on the control panel of the main unit.

  • Page 206: Elevator Tray

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Elevator tray • The Elevator Tray moves up or down according to certain conditions. 4.4.1 Elevator tray ascent/descent mechanism • The Elevator Tray is moved up or down by the Elevator Motor that turns forward or back- ward.

  • Page 207: Elevator Tray Shifting Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations 4.4.2 Elevator tray shifting mechanism • When in the Sort mode, the Elevator Tray is moved to the front and rear by a motor to stack print sets in a sawtooth manner so that each print set is offset with respect to the others.

  • Page 208: Horizontal Transport Unit

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Horizontal transport unit Entrance Switching Turnover Empty Sensor Solenoid (SL1-FN) (PC6-FN) Horizontal Unit Door Sensor (PC4-FN) Paper Sensor (PC1-FN) 2-18...

  • Page 209: Paper Transport Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Feb. 2004 Mechanical operations 4.5.1 Paper transport mechanism A. Paper path switching mechanism • The paper fed from the main unit moves through either one of the two different paper paths. • A solenoid is used to select the paper path. For switchback sequence during 2-sided printing: Solenoid energized For transport onto the Finisher: Solenoid deenergized Turnover Empty Sensor (PC6-FN)
  • Page 211 DEVELOP SERVICE MANUAL THEORY OF OPERATION JS-601...
  • Page 213 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline Product specification .................... 1-1 Type ........................1-1 Functions ......................1-1 Paper type ......................1-1 Machine specifications..................1-1 Operating environment ..................1-1 Composition/Operation Overall composition....................2-1 Center cross section .................... 2-2 Mechanical operation ...................
  • Page 214 QC 2235plus Theory of Operation Ver1.0 Mar. 2004...
  • Page 215 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specification I Outline Product specification Type Name Job separator Installation Fixed to Finisher Document Alignment Center Functions Modes Non-Sort (in the fax or printer output mode) Paper type Paper Type Paper Size Weight Tray Capacity 100 sheets:...
  • Page 217 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Overall composition II Composition/Operation Overall composition Job Tray Job Separator Cover...
  • Page 218 Center cross section QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Center cross section Job Separator Exit Roller Job Separator Transport Roller Job Separator Exit Roll Job Separator Transport Roll...

  • Page 219: Mechanical Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operation Mechanical operation Job tray paper transport mechanism • The Job Separator Transport Roller and Job Separator Exit Roller turn to transport the paper into the Job Tray as the motor is energized. •...
  • Page 221 DEVELOP SERVICE MANUAL THEORY OF OPERATION FS-601...
  • Page 223 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline Product specification .................... 1-1 Type ........................1-1 Functions ......................1-1 Paper type ......................1-1 1.3.1 Non-Sort ....................... 1-1 1.3.2 Sort ....................... 1-1 1.3.3 Sort staple ....................1-2 1.3.4 Saddle staple....................1-2 Stapling......................
  • Page 224 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 4.3.5 Stapling unit moving control ............... 2-17 4.3.6 Elevator tray mechanism ................2-18 Booklet tray...................... 2-19 4.4.1 Overall composition ..................2-19 4.4.2 Transport operation in saddle section............2-20 4.4.3 Folding mechanism ..................2-24 4.4.4 Paper folding start position.................

  • Page 225: Product Specification

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specification I Outline Product specification Type Type Multi Staple Finisher with Saddle (Booklet) Installation Freestanding Document Alignment Center Supplies Staple Cartridge Functions No. of Holes (optional) Metric: 4holes, Inch: 2holes / 3holes Non-Sort Sort Modes...

  • Page 226: Sort Staple

    Product specification QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 1.3.3 Sort staple No. of Sheets Paper Type Paper Size Weight Tray Capacity Exit Tray to be Stapled Normal A4R / 8- Normal Mode *1 1/2×11R 8-1/2×14 Mode or smaller or larger 60 to 90 No.

  • Page 227: No. Of Sheets To Be Stapled (Sort Staple)

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specification No. of sheets to be stapled (sort staple) A. A4R, 8-1/2 × 11R or smaller No. of Sets No. of Sheets to be Stapled Rear: Parallel Center: Parallel Front: Parallel 3 to 5 6 to 10 11 to 20...

  • Page 229: Ii Composition/Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Overall composition II Composition/Operation Overall composition Elevator Tray Paper Guide Upper Door Rear Door Front Door Hookup Cord Booklet Tray...

  • Page 230: Drive System

    Drive system QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Drive system Stapling Drive Entrance Drive Mechanism Mechanism Tray Drive Mechanism Saddle Drive Mechanism Aligning Drive Mechanism...

  • Page 231: Paper Path

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Paper path Paper path...

  • Page 232: Mechanical Operations

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Horizontal transport mechanism 4.1.1 Paper path switching mechanism • The path along which the paper is transported is selected with the Entrance Switching Solenoid. • During a 2-sided print mode, the solenoid is energized to feed the paper into the lower path and then feed it back to the main unit.

  • Page 233: Finisher Paper Transport Mechanism

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations 4.1.2 Finisher paper transport mechanism • Drive from the Transport Motor turns the Transport Roller to transport paper fed from the main unit onto the Finisher. • The Transport Roller on the Finisher side is driven by the Transport Motor to feed the paper through the Finisher.

  • Page 234: Finishing Tray Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Finishing tray mechanism 4.2.1 Non-sort mode • In the Non Sort Mode, Paper is taken back onto the Finishing Tray and then fed out onto the Elevator Tray. Elevator Tray Paper Paper Transport Finishing Tray...

  • Page 235: Sort Mode

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations 4.2.2 Sort mode • In the Sort Mode, Paper is taken back onto the Finishing Tray and shifted to the front or rear side with the Aligning Plate. Then, a stack of paper per set is fed out onto the Elevator Tray. •...

  • Page 236: Center Staple Booklet Mode

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.2.4 Center staple booklet mode • In Center Staple Booklet Mode, A stack of paper fed onto the Finishing Tray is stapled (at two places) and then transported to the Saddle Section. •...

  • Page 237: Paper Stacking With Finishing Tray

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations 4.2.5 Paper stacking with finishing tray • After the paper has been fed through the Exit Roller, the paper drops onto the Finishing Tray. Then, the Paddle taps the top of the paper twice (once for the additional sheets) so that the trailing edge of the paper reaches the Finishing Tray Stopper.

  • Page 238: Aligning Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.2.6 Aligning mechanism • Two Aligning Plates are moved by drive of the Front, or Rear Aligning Motor in the for- ward or reverse direction. • The Aligning Plates home position is detected with the Front, or Rear Aligning Plate Home Position Sensor.

  • Page 239: Offsetting Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations 4.2.7 Offsetting operation • Whenever the paper is stacked, it is moved toward the front or rear side by the Front or Rear Aligning Plate. Accordingly, the offsetting operation is made whenever the paper is fed onto the Finishing Tray.

  • Page 240: Exiting Operation

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.2.8 Exiting operation • The Paddle, driven by the Paddle Motor, makes the Swing Guide move down and then the paper is taken up with the Upper, and Lower Exit Rollers. •...

  • Page 241: Stapling Unit

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Stapling unit 4.3.1 Types and positions of staples • Shown here are the different stapling positions used with the FS-601. Type Paper Size (Inch area) Paper Size (Metric area) Corner stapling (Rear) 8.5×11, 8.5×11R, 8.5×14, 11×17 A4R, A4, A3 Corner stapling (Front)

  • Page 242: Stapling Unit Moving Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.3.2 Stapling unit moving mechanism • When the Power Switch is turned ON, or the Front Door is opened and closed, the Sta- pling Unit is moved to the front side with the forward rotation of the Slide Motor and stopped at the position where the Slide Home Position Sensor located at the bottom of the Staple Unit is blocked by the Light Shield Plate.

  • Page 243: Staple Operation

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations 4.3.3 Staple operation • After the paper stacking and alignment operation on the Finishing Tray have been com- pleted, a stack of paper is taken up with the Upper, and Lower Exit Rollers by moving the Swing Guide down with the Paddle Motor rotating in the reverse direction.

  • Page 244: Stapling Unit

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.3.4 Stapling unit • The Stapling operation is accomplished by a Cam rotated once with the Staple/Folding Motor. • The Home position of this Cam is detected with the Staple Drive Home Position Sensor. If the Staple Drive Home Position Sensor is OFF, the Staple/Folding Motor rotates in the forward direction until the Sensor is blocked or the signal is ON, which designates that the position of the Cam is ready for the next stapling operation.

  • Page 245: Stapling Unit Moving Control

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations 4.3.5 Stapling unit moving control • The Stapling Unit is moved with the Slide Motor and its home position is detected with the Slide Home Position Sensor. • Regardless of the staple mode or paper size, the stapling unit always returns to the stand by position on the rear side.

  • Page 246: Elevator Tray Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.3.6 Elevator tray mechanism • The Elevator Tray is moved up or down by drive from the Shift Motor and the Exit Tray Sensor detects if the paper is stacked on the Elevator Tray. •...

  • Page 247: Booklet Tray

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Booklet tray 4.4.1 Overall composition • The Booklet Tray is fixed and all the paper stacked as a booklet is exited onto this Tray. • The Saddle Tray Sensor detects if the paper is stacked on the Booklet Tray, but does not detect a paper jam.

  • Page 248: Transport Operation In Saddle Section

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.4.2 Transport operation in saddle section A. Paper transport • After a stack of paper has been aligned on the Finishing Tray, it is taken up with the Upper and Lower Exit Rollers. With the rotation of the Upper and Lower Exit Rollers, a stack of paper is transported into the Stapling Section.
  • Page 249 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations B. Stapling • The stack of paper is further transported and temporarily stopped when the center area of the paper (the area where stapling will be made) has reached the position of the sta- ples in the Stapling Unit.
  • Page 250 Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 C. Booklet Transport • Next, the stack of paper that was stapled is transported to the paper folding / exit position with the Transport Rollers. The Paper folding /exit position is the position where the cen- ter of the paper (where stapled) is of the same height as that of the Paper Pressure Plate and nip area of the Folding Rollers.
  • Page 251 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations D. Folding/exit • The Paper Pressure Plate presses the center of the paper to transport the paper toward the Paper Folding Rollers. Then the Paper Folding Rollers take up and fold the paper and feed the stack of paper onto the Booklet Tray through the Folding, and the Booklet Exit Rollers.

  • Page 252: Folding Mechanism

    Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 4.4.3 Folding mechanism • The Paper Folding Mechanism consists of the Folding Rollers and Paper Pressure Plate. • They are driven by the Staple/ Folding Motor respectively through the combination of the Gears and Cams etc.

  • Page 253: Paper Folding Start Position

    QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations 4.4.4 Paper folding start position • Paper folding is created by the Paper Folding Plate and the Paper Pressure Plate. At the same time when the Folding Rollers start to rotate, the Paper Pressure Plate starts pressing the stack of paper to the contact area of the Paper Folding Rollers.
  • Page 255 DEVELOP SERVICE MANUAL THEORY OF OPERATION PK-4/PK-131...
  • Page 257 QC 2235plus Theory of Operation Ver1.0 Mar. 2004 CONTENTS Outline Product specification .................... 1-1 Functions ......................1-1 Paper type ......................1-1 Machine specifications..................1-1 Operating environment ..................1-1 Composition/Operation Overall composition....................2-1 Mechanical operations ..................2-2 Punching operation.................... 2-2 Side registration operation................. 2-3...
  • Page 258 QC 2235plus Theory of Operation Ver1.0 Mar. 2004...
  • Page 259 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Product specification I Outline Product specification Functions No. of Holes (optional) Metric: 4holes, Inch: 2holes / 3holes Paper type No. of Sheets Paper Type Paper Size Weight Tray Capacity Exit Tray to be Stapled 4 holes A4, A3 60 to 209 8-1/2 ×...
  • Page 261 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Overall composition II Composition/Operation Overall composition Punch Axis Punch Motor (M1P-PK) Off-center Cam Hole-Punch Waste Container...
  • Page 262 Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Punching operation • The Punch Section consists of the Dyes Section and the Punch Blade Section • The Punch, which is attached to the Off-Center Cam of the Punch Axis, is driven by the Punch Motor and creates the punching operation with a reciprocating movement con- verted from the rotation movement of the Punch Axis.
  • Page 263 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations Side registration operation • The Side registration drive for the Punch Slide Unit is made by the Side Registration Motor. • The Home position of the Punch Slide Unit is detected with the Side Registration Home Position Sensor.
  • Page 264 Mechanical operations QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 B. Operation 2 1. Side Registration Sensor detects paper edge at rear side. 2. Side Registration Motor moves Punch Slide Unit at the specified position. 3. Punch Slide Unit stops. Side Registration Sensor 1 Rear side Side Registration Sensor 2...
  • Page 265 QC 2235plus Theory of Operation Ver.1.0 Mar. 2004 Mechanical operations C. Operation 3 1. Paper Trailing Edge Sensor detects paper trailing edge. 2. Transport Motor is stopped. 3. Paper transport is stopped. 4. Punch Motor is driven to punch holes. 5.
  • Page 266 DEVELOP Copyright 2004 Develop Printed in Germany...

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