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This reference manual describes the specifications and basic operating procedures for the LTP F Series Thermal Printer Mechanism (hereinafter referred to as “printer”). The LTP F series has the following two types of printers that are classified by their paper width. LTPF247A-C432...
Printer Mounting Dimensions ... 6-1 6.1.2 Recommended Screws ... 6-3 6.1.3 Precautions for Securing the Printer ... 6-3 LAYOUT OF PRINTER AND PAPER ... 6-4 WHERE TO MOUNT THE PAPER HOLDER ... 6-5 WHERE TO MOUNT THE PLATEN UNIT... 6-5 WHERE TO MOUNT THE PLATEN RELEASE KNOB ...
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Installation Method ... 9-2 9.1.2 Clearing a Paper Jam in the Autocutter ... 9-4 9.1.3 Consideration for Outer Case Design ... 9-5 9.1.4 Considerations for Using ... 9-7 9.1.5 Appearance of the Printer with the Autocutter Installed ... 9-8 CHAPTER 9 PERIPHERALS Page...
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Outer Case Design sample (Mechanism Side) ... 9-6 Using the Paper Effectively When Cutting ... 9-7 Appearance of the Printer with the Autocutter Installed (LTPF247 with ACUF224A) ... 9-8 Appearance of the Printer with the Autocutter Installed (LTPF247 with ACUF224B) ... 9-9 9-10 Appearance of the Printer with the Autocutter Installed (LTPF347 with ACUF324A) ...
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Connectors for External Circuit and Recommended Connectors for the Other FFC ... 4-1 Thermal Head Control Terminal Assignments (LTPF247)... 4-3 Thermal Head Control Terminal Assignments (LTPF347)... 4-4 Motor Control Terminal Assignments ... 4-5 Printer Mechanism and Corresponding Autocutter Unit ... 9-1 TABLES Page...
Also, allow cooling by designing clearance between the head, motor and the outer case. Precautions for sharp edges of the printer body Design the outer case so that the user cannot touch sharp edges of the printer body or the cutting surface of metal parts. Or, provide warnings concerning this matter.
DESIGN AND HANDLING PRECAUTIONS To maintain the initial level of performance of the printer and to prevent future problems from occurring, observe the following precautions. 1.2.1 Design Precautions Design precautions If too much energy is applied to the thermal head, it may overheat and become damaged.
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Stress may cause printing problems, resulting in damage to the thermal head. Always release the pressure of the thermal head when not using the printer for a long time (put the platen in platen open state). The platen pressured to the thermal head may become deformed.
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This problem is more likely to occur when printing bit images. Do not open the platen unit while printing. The printer may be damaged. Do not use label paper, carbon paper, and thermal paper of more than 80µm.
The printer is not water-proof. Prevent contact with water and do not operate with wet hands as it may damage the printer or cause a short circuit or fire. Never use the printer in a dusty place, as it may damage the thermal head and cause paper feed trouble.
1.2.3 Precautions on Discarding When discarding used printers, discard them according to the disposal regulations and rules of each respective district.
The LTP F Series Line Thermal Printer Mechanism is a compact, super high-speed thermal line dot printing mechanism. It can be used with a measuring instrument and analyzer, a POS, a communication device, or a data terminal device. The LTP F Series has the following features:...
GENERAL SPECIFICATIONS Item Print method Dots per line Printable dots per line Simultaneously activatable dots per line Resolution ∗ 1 Maximum print speed Print width Paper width Paper feed pitch Head temperature detection Platen position detection Out-of-paper detection Operating voltage range Vp line Vdd line Current...
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Table 3-1 General Specifications (Continued) Item Life span (at 25°C and rated energy) Activation pulse resistance Abrasion resistance Paper feed force Paper hold force Dimensions (excluding the lever and convex part) (width × depth × height) Mass Specified thermal paper ∗...
HEAT ELEMENT DIMENSIONS 3.2.1 Heat Element Dimensions for the LTPF247 The LTPF247 contains a thermal head with 448 heat elements (dot-size). The 432 dots (54 mm to the paper width 58 mm) is a printable area due to a relation with the paper width. When transmitting print data, enter (NUL) data for data strings equivalent to 8 dots each on the right and left sides.
3.2.2 Heat Element Dimensions for the LTPF347 The LTPF347 contains a thermal head with 640 heat elements (dot-size). the paper width 80 mm) is a printable area due to a relation with the paper width. When transmitting print data, enter (NUL) data for the data string equivalent to 32 dots each in right and left sides.
Any type of design for the drive circuit other than the example described in Section 3.4.1 may affect the standard function of the printer. Paper is fed in the forward direction when the motor shaft is rotating anticlockwise as seen from the motor gear side.
STEP MOTOR CHARACTERISTICS Item Type Drive method Excitation Winding resistance per phase Rated voltage Set current Table 3-2 General Motor Specifications Bipolar chopper 2-2 phase 16Ω/phase±10% Vp: 24 V±10% Approximately 275 mA/phase Specification...
3.4.1 Motor Drive Circuit (1) Sample Drive Circuit A sample drive circuit for the motor is shown in Figure 3-5. Recommended motor driver Shin Kaden Kogyo MTD2007F Figure 3-5 Sample Drive Circuit Rated voltage 24±10% Vcc: 5±5%...
When the voltage signals shown in Figure 3-6 are input to the motor drive circuit shown in Figure 3-5, as shown in Table 3-3, the LTP F Series feeds the paper in the normal direction when the motor is excited in the order of step 1, step 2, step 3, step 4, step 1, step 2, ..
3.4.2 Motor Timing Refer to the time chart in Figure 3-7 when designing the control circuit or software for starting and stopping the motor. Also, note the following precautions: Precautions for Designing the Motor Control Circuit and Software (1) Stop step To stop the motor, excite for 10 msec with the same phase as the last one in the printing step.
4. Output the nth step for the nth step acceleration time 5. After accelerating up to the motor driving speed, the motor is driven at constant speed. The printer can print during acceleration. The maximum printing speeds differ depending upon the drive method of the thermal head. Set the acceleration step as follows.
Motor Current Control The motor driving at a low speed may make noises during motor driving. Change the current value supplied to the motor so that the noise can be reduced. The current value supplied can be switched by controlling I0 and I1 as follows. HIGH HIGH In each motor driving step, when the motor step time Tm (ms) is over 2.5 ms, drive the motor 4/10Im...
A sample motor current control is shown in Figure 3-8. Approx. Motor drive 275mA) current Figure 3-8 Sample of Motor Current Control Drive the motor at Im (approx. 275 mA) during the start-up step and the stop step. Do not switch the current.
The LTP F series can be printed by dividing printing into blocks for every 128 dots. The divided printing is effective for a high print ratio printing because the peak current can be cut down with the reduction of the average print speed.
3.5.1 Structure of the Thermal Head (LTPF247) Figure 3-9 shows the thermal head block diagram for the LTPF247. Table 3-7 shows the relationship between DST blocks and activated heat elements. Heat elements Output driver Latch register Shift register DAT IN2 LATCH DST2 DAT OUT2...
1 to 192 193 to 448 Paper feed direction Paper Print surface Data print sequence 1 2 3 4 5 6 ... 446 447 448 LTPF247 printer mechanism 3-16 Dots/DST Data in 193 194 ..447 448...
3.5.3 Thermal Head Electrical Characteristics (LTPF247) Table 3-7 Thermal Head Electrical Characteristics (LTPF247) Item Symbol Head resistance Head drive voltage Head drive current Logic block voltage Logic block current "High" Input voltage "Low" "High" IIH DAT input current "Low" IIL DAT "High"...
3.5.4 Structure of the Thermal Head (LTPF347) Figure 3-11 shows the thermal head block diagram for the LTPF347. Table 3-8 shows the relationship between DST blocks and activated heat elements. Heat elements Output driver Latch register Shift register DAT IN2 LATCH DST2 DAT OUT2...
3.5.6 Thermal Head Electrical Characteristics (LTPF347) Table 3-9 Thermal Head Electrical Characteristics (LTPF347) Item Symbol Head resistance Head drive voltage Head drive current Logic block voltage Logic block current "High" Input voltage "Low" "High" IIH DAT input current "Low" IIL DAT "High"...
3.5.7 Timing Chart DAT IN DAT OUT LATCH DRIVE OUT 3.5.8 Head Resistance The LTP F Series head resistance is as shown in Table 3-10. tw CLK thold DI tsetup DI td DO tsetup LAT tsetup DST tw LAT Figure 3-13 Timing Chart...
3.5.9 Head Voltage The printer has a built-in head driver IC. Table 3-11 shows the head voltage. Head drive voltage Head logic voltage 3.5.10 Peak Current Since the peak current (maximum current) may reach the values calculated using equation (1) when the thermal head is driven, make sure that the allowable current for the cable material and the voltage drop on the cables are well within the specified range.
3.6.1 Calculation of the Head Activation Pulse Width To execute high quality printing using the printer, the value that is calculated using the following equation (2) must be adjusted according to the printer installation environment. Calculate each value used according to the steps in Sections 3.6.2 to 3.6.5 and control so that the pulse width with the t (msec) value obtained by substituting each value into the equation (2).
3.6.3 Adjustment of the Head Resistance Adjustment of the head resistance is according to equation (4). Due to wiring resistance there is a drop in voltage. Equation (4): ( RH + Ri + (Rc + rc ) RH:Head resistance, RH=650 Ω Ri: Wiring resistance in the thermal head (Ω), Ri=25Ω...
3.6.5 Heat Storage Coefficient A difference between an actual rise in temperature of the thermal head due to the head activation and the detected temperature by the thermistor occurs in the high speed printing. Therefore, a correction of the activation pulse through the simulation of a rise in thermal head temperature is needed.
3.6.6 Thermistor Resistance The resistance of the thermistor at the operating temperature T equation (7). Equation (7): × EXP B × Resistance at operating temperature Tx (°C) 30 kΩ ± 5% (25°C) 3950 K ± 2 % Operating temperature (°C) EXP (A) : The Ath power of natural logarithm e (2.71828) [Rating] Operating temperature range: -40 °C to +125 °C...
3.6.7 Detecting Abnormal Temperatures of the Thermal Head To protect the thermal head and to ensure personal safety, abnormal thermal head temperatures must be detected by both hardware and software as follows: Detecting abnormal temperatures by software Design software that will deactivate the heat elements if the thermal head thermistor (TH) detects a temperature of 80°C or more (thermistor resistance RTH ≤...
PAPER DETECTOR The printer has a built-in paper detector (reflection type photo-interrupter) to detect whether paper is present or not. An external circuit should be designed so that it detects the output from the paper detector and does not activate the thermal head when there is no paper. Doing not so may cause damage to the thermal head or platen roller or shorten the life of the thermal head significantly.
=5 V =5 µA =5 V 5µs 5µs LTP F Series Photo-interrrupter The PS signal is high when there is no paper. Max. 1.6 V 10 µA 200 nA 600 µA 1 µA 0.5V ...
PLATEN POSITION DETECTOR The printer has a built-in platen position detector for detecting whether the platen unit is opened or closed. This detector is a mechanical switch which is designed to be in a CLOSED state when the platen unit is closed and to be in an OPENED state when it is opened.
Use the recommended connectors listed in Table 4-1 to connect the printer firmly to the external circuits. Table 4-1 Connectors for External Circuit and Recommended Connectors for the Other FFC Function and Model Number Thermal head control connector (JAE:IL-FPC-28CLIP) Motor connector and...
THERMAL HEAD CONTROL TERMINALS Figure 4-1 shows the terminal configuration of the thermal head control connector. Figure 4-1 Thermal Head Control Terminals...
Table 4-2 Thermal Head Control Terminal Assignments (LTPF247) Terminal Signal Name Input/Output Number DAT OUT1 DAT IN1 DST1 LATCH DST2 DAT OUT2 DAT IN2 Function Head drive power Head drive power Head drive power Head drive power Output Print data output Input...
Table 4-3 Thermal Head Control Terminal Assignments (LTPF347) Terminal Signal Name Input/Output Number DAT OUT1 DAT IN1 DST1 LATCH DST2 DAT OUT2 DAT IN2 Function Head drive power Head drive power Head drive power Head drive power Output Print data output Input...
MOTOR CONTROL TERMINALS Figure 4-2 shows the terminal configuration for motor control and detector connection, and Table 4-4 shows their terminal assignments. Figure 4-2 Terminals on the Motor Connector Table 4-4 Motor Control Terminal Assignments Terminal Number ∗ Terminal numbers 8 and 9 can be reversed because the platen position detector is a mechanical switch. Signal Name Motor drive signal Motor drive signal...
Drive the motor and the thermal head at the same time for printing. Figure 5-1 is a timing chart for driving using two divisions. Figure 5-1 is an example of acceleration control of the motor, data transfer to the head and two-divisions of the head. Timing chart of Figure 5-1 is explained in order thereinafter.
Repeat the steps in the same way. Transfer the data which will be printed in the next step to the thermal head while starting the activation of the thermal head. The data transfer time and head activation time may be longer than the motor step time according to the type of the thermal paper, printing data and operational environment.
CHAPTER 6 HOUSING DESIGN GUIDE SECURING THE PRINTER 6.1.1 Printer Mounting Dimensions As shown in Figure 6-1, secure the printer at four mounting holes: a, b, c and d. The indents #1 and #2 are for positioning.
Prevent excessive force or torsion when securing the printer. Mount the printer on the flat mounting face and use the printer in a place where vibration does not occur. A rubber vibration isolator is also effective to prevent vibration.
LAYOUT OF PRINTER AND PAPER The LTP F Series can be laid out as shown in Figure 6-2 according to the loading direction of the paper. Thermal head Heat element Mounting face Figure 6-2 Layout of Printer and Paper Platen...
Paper supply load to the printer should be 0.49N (50gf). WHERE TO MOUNT THE PLATEN UNIT The dimensions of alignment for the mechanical unit and the platen unit are shown in Figure 6-3 for a situation when the platen unit has been mounted to the outer case, and the unit has been opened and closed.
WHERE TO MOUNT THE PLATEN RELEASE KNOB The platen release knob fitted to the outer case can be installed by using the outer shape of the release lever and three holes. CHAPTER 7 shows the appearance and the positions of the holes. Do not apply a force of 29.4 N (3 kgf) or more to the release lever.
CHAPTER 7 APPEARANCE AND DIMENSIONS Figure 7-1 shows the appearance and the external dimensions of the LTPF247. Figure 7-2 shows the appearance and the external dimensions of the Platen Unit for the LTPF247. Figure 7-3 shows the appearance and the external dimensions of the LTPF347. Figure 7-4 shows the appearance and the external dimensions of the Platen Unit for the LTPF347.
LOADING/UNLOADING PAPER AND HEAD CLEANING LOADING/UNLOADING PAPER PRECAUTIONS (1) Loading paper Turn over the release lever to the direction of the arrow in the Figure 8-1. Pull up the platen after making sure that the platen is released from the release lever. (Open state) CHAPTER 8 Figure 8-1 Loading Paper (1)
Set the paper straight into the paper insert position until 5 cm or more of the paper edge is projected from the upper surface of the mechanism. (See Figure 8-2.) Close the platen after making sure that the paper is set straight. (Close state) Figure 8-2 Loading Paper (2) When the platen is closed, the gear A and the gear B come together (See Figure 8-3) and the platen may stop.
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(2) Unloading paper Unload paper in the same manner for loading paper. (3) Cleaning a paper jam Unload the paper, following manner for unloading the paper.
HEAD CLEANING PRECAUTIONS AND PROCEDURE 8.2.1 Head Cleaning Precautions (1) Do not clean the head directly after printing because the thermal head unit and its periphery are hot. (2) Do not use sandpaper, cutter, etc. when cleaning. They will damage the heat elements. 8.2.2 Head Cleaning Procedure (1) Turn over the lever to the direction of the arrow in the Figure 8-4.
AUTOCUTTER UNIT The ACU F Series autocutter unit can be installed on this printer as shown in Table 9-1. The ACU F Series paper cutter unit is a sliding type autocutter. Please refer to the “ACU F SERIES AUTOCUTTER UNIT TECHNICAL REFERENCE” for the specifications and drive method.
9.1.1 Installation Method (1) Installing the autocutter unit Movable unit Place the movable blade unit on the mechanism as shown in Figure 9-1. Recommended screws: JIS 1188 pan head machine screw (small round type) M3×6 Be careful not to damage the thermal head during installation. Positioning bosses Figure 9-1 Installing the Autocutter Unit (Movable blade unit) Screw hole for mounting the GND wire (M2.6)
Fixing Blade Unit (1) Remove the protection tape that is attached to the fixing blade unit as shown in Figure 9-2. Handle with care the fixing blade edge after removing the protection tape. (2) Mount the fixing blade unit to the autocutter unit with 2 screws. Recommended screws: JIS 1188 pan head machine screw (small round type) M2×4.
9.1.2 Clearing a Paper Jam in the Autocutter Owing to the paper jammed, if the cutter has been locked during paper cutting, power off the motor immediately and cancel the lock by performing the following procedures manually. (1) Tear transparent film from the upper surface of the autocutter (Figure 9-4 (1)), turn the knob in the direction shown in Figure 9-4 (2) until the entire hole of the warm wheel can be seen from the standby position confirmation window and retreat the movable blade.
(3) The outer case should be designed so that the user’s fingers or other objects will not be inserted into the paper outlet. (4) Inappropriate positioning of the platen and the printer mechanisum may cause cutting failure and/or paper jam. Pay special attention when designing the outer case. Refer to “6.4 WHERE TO MOUNT THE PLATEN UNIT”...
PRINT AREA A PRINT AREA B PRINT The distance between the print position and cut position when mounting the autocutter onto the printer is approximately 13 mm. Do not perform a consecutive print across print area A and print area B.
Figure 9-8 shows an appearance and external dimensions of the LTPF247 with the autocutter installed. Figure 9-9 shows an appearance and external dimensions of the LTPF347 with the autocutter installed. Unit: mm General tolerance: ±0.2 Figure 9-8 Appearance of the Printer with the Autocutter Installed (LTPF247 with ACUF224A)