Seiko SII LTP01-245-11 Technical Reference
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Seiko SII LTP01-245-11 Technical Reference

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LTP01-245-11/12/18
THERMAL PRINTER MECHANISM
TECHNICAL REFERENCE
U00129248807

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Summary of Contents for Seiko SII LTP01-245-11

  • Page 1 LTP01-245-11/12/18 THERMAL PRINTER MECHANISM TECHNICAL REFERENCE U00129248807...
  • Page 2 Copyright © 2012-2015 by Seiko Instruments Inc. All rights reserved. Seiko Instruments Inc. (hereinafter referred to as "SII") has prepared this manual for use by SII personnel, licensees, and customers. The information contained herein is the property of SII and shall not be reproduced in whole or in part without the prior written approval of SII.
  • Page 3 PREFACE This technical reference (hereinafter referred to as "manual") describes the specifications and basic operating procedures for the LTP01-245-11/12/18 thermal printer mechanism (hereinafter referred to as "printer"). The printer has the following models.  LTP01-245-11  LTP01-245-12  LTP01-245-18 This manual usually describes information common to any printer unless otherwise specified. If the information is different depending on model, specific model names are mentioned clearly.
  • Page 4 Identifying the parts of the printer as follows. The following describes identifying the parts of the LTP01-245-11, LTP01-245-12, and LTP01-245-18 as an example of the LTP01-245-11. The figure of LTP01-245-12 and LTP01-245-18 illustrates only the differences from LTP01-245-11. Printer mechanism Platen unit Platen Printer main body...

  • Page 5: Table Of Contents

    TABLE OF CONTENTS CHAPTER1 PRECAUTIONS SAFETY PRECAUTIONS..................1-2 DESIGN AND HANDLING PRECAUTIONS ............1-3 1.2.1 Design Precautions ..................1-3 1.2.2 Handling Precautions ..................1-5 1.2.3 Precautions on Discarding ................1-6 CHAPTER2 FEATURES CHAPTER3 SPECIFICATIONS GENERAL SPECIFICATIONS ................3-1 PRINT CONFIGURATION..................3-3 STEP MOTOR .......................
  • Page 6 3.7.2 Precautions for the Out-of-Paper Sensor............ 3-30 CHAPTER4 CONNECTING TERMINALS RECOMMENDED CONNECTOR FOR EXTERNAL CIRCUITS ......4-1 CONNECTING TERMINALS................. 4-1 CHAPTER5 PRINT DRIVE METHOD MOTOR AND THERMAL HEAD DRIVE METHOD ..........5-1 THERMAL HEAD DIVISION DRIVE METHOD............. 5-3 PRECAUTIONS FOR PRINT DRIVE ..............5-3 CHAPTER6 OUTER CASE DESIGN GUIDE SECURING THE PRINTER MAIN BODY .............
  • Page 7 FIGURES Figure 3-1 Print Dot Pitch ....................3-3 Figure 3-2 Print Area ....................... 3-3 Figure 3-3 Sample Drive Circuit 1 ................... 3-5 Figure 3-4 Sample Drive Circuit 2 ................... 3-6 Figure 3-5 Input Voltage Waveforms for the Sample Drive Circuit ......... 3-7 Figure 3-6 Motor Start/Stop Timing Chart ...............
  • Page 8 TABLES Table 3-1 General Specifications ................... 3-1 Table 3-2 General Specifications of the Step Motor ............3-4 Table 3-3 Excitation Sequence ..................3-7 Table 3-4 Maximum Motor Drive Pulse Rate ..............3-9 Table 3-5 Maximum Motor Drive Pulse Rate (During auto-loading) ......3-9 Table 3-6 Acceleration Steps ..................

  • Page 9: Chapter1 Precautions

    CHAPTER 1 PRECAUTIONS Read through this manual to design a product and to operate the printer properly. Pay special attention to the precautions noted in each section for details. Information contained in this manual is subject to change without notice. For the latest information, contact our sales representative.

  • Page 10: Safety Precautions

    1.1 SAFETY PRECAUTIONS Follow the precautions listed below when designing your product for using safely. Include any necessary precautions into your operation manual and attach warning labels to your products to ensure safe operation.  Precautions to prevent the thermal head from overheating When the thermal head heat elements are continuously activated by a CPU or other malfunction, the thermal head may overheat and may cause smoke and fire.

  • Page 11: Design And Handling Precautions

    1.2 DESIGN AND HANDLING PRECAUTIONS To maintain the primary performance of the printer and to prevent future problems from occurring, follow the precautions below. 1.2.1 Design Precautions  Apply power in the following manner: At power on : (1) Vdd → (2) Vp At shut down : (1) Vp →...
  • Page 12  Paper feeding may be confused with several dot lines when printing is started from waiting status. When printing and paper feeding are interrupted and then started printing, as this may cause the paper feeding be confused. When printing bit images and so on, always feed the thermal paper for more than 48 steps at start up and do not interrupt printing.

  • Page 13: Handling Precautions

    1.2.2 Handling Precautions Incorrect handling may reduce the efficiency of the printer and cause damage. Handle the printer with the following precautions. Also, include any necessary precautions so that users handle the printer with care.  Using anything other than the specified thermal paper does not guarantee print quality and life of the thermal head.

  • Page 14: Precautions On Discarding

     In order to prevent the electronic parts such as thermal head, out-of-paper sensor, motor, and platen detection switch from damage and to avoid the print defect, warn users not to touch the thermal head and the sensor directly when handling the printer like replacing the thermal paper. ...

  • Page 15: Chapter2 Features

    CHAPTER 2 FEATURES The printer is a compact printer that adopts a thermal line dot printing method. It has the following features:  High resolution printing A high-density print head of 8 dots/mm produces clear and precise printing.  Compact and light weight Dimensions : W69.8mm x D32.7mm x H15.3mm (LTP01-245-11, LTP01-245-18) W70.3mm x D32.7mm x H15.3mm (LTP01-245-12)

  • Page 16: Chapter3 Specifications

    CHAPTER 3 SPECIFICATIONS 3.1 GENERAL SPECIFICATIONS Table 3-1 lists the general specifications of the printer. Table 3-1 General Specifications (1/2) Specifications Items LTP01-245-11/18 LTP01-245-12 Printing method Thermal dot line printing Total dots per line 384 dots Printable dots per line 384 dots Simultaneously activated dots 64 dots max.
  • Page 17 (2/2) Specifications Items LTP01-245-11/18 LTP01-245-12 Operating temperature range 0°C to 50°C (Non condensing) 40℃85%RH 45℃64%RH 50℃52%RH Operating humidity range Temperature(℃） Storage temperature range -25°C to 60°C (Non condensing) Activation pulse 100 million pulses or more Life span resistance (at 25°C and rated energy) Abrasion 50 km or more resistance...

  • Page 18: Print Configuration

    3.2 PRINT CONFIGURATION Figure 3-1 shows print dot pitch. Figure 3-2 shows print area. 48mm（384dot） 0.125mm 0.125mm Figure 3-1 Print Dot Pitch mm(Paper width　) 5 mm 48 mm(Printing width) 5 mm Figure 3-2 Print Area...

  • Page 19: Step Motor

    3.3 STEP MOTOR 3.3.1 General Specifications Table 3-2 shows general specifications of the step motor. Table 3-2 General Specifications of the Step Motor Item Specifications Type PM type step motor Drive method Bi-polar chopper Excitation 1-2 phase 10.5 Ω/phase 10% Winding resistance per phase Motor drive voltage Vp : 4.75 V to 9.5 V...

  • Page 20: Sample Drive Circuit

    3.3.2 Sample Drive Circuit (a) Motor current control with VREF signal Figure 3-3 is a sample drive circuit when motor driver VREF signal (1.0V output) and resistance voltage division are used to perform the motor current control. It is not possible to use this sample circuit when auto-loading is used because the motor current switching control is required.
  • Page 21 (b) Motor current control without VREF signal Figure 3-4 is a sample drive circuit when the current control is performed without using motor driver VREF signal. The motor controlled current is switched by the MREF signal voltage. VLIM Terminal Input Drive Condition Motor Controlled Current Voltage...

  • Page 22: Excitation Sequence

    3.3.3 Excitation Sequence Drive the motor with 1-2 phase excitation. One step of the motor drive signal feeds the thermal paper 0.03125 mm. One dot line is consisted of 4 steps. When the voltage signal shown in Figure 3-5 is input to the motor drive circuit shown in Figure 3-3, the printer feeds the thermal paper in the normal direction when the motor is excited in order of step 1, step 2, step 3, step 4, step 5, step 6, step 7, step 8, step 1, step 2, .

  • Page 23: Motor Start/Stop Method

    3.3.4 Motor Start/Stop Method Refer to the timing chart in Figure 3-6 when designing the control circuit or software for starting and stopping the motor. Also note the following precautions: (1) Start step To start the motor from the pause (no excitation) state, shift the motor to the sequence of print step after exciting the same phase as that of the stop step for the start step time of the acceleration step.

  • Page 24: Motor Drive Method

    3.3.5 Motor Drive Method Drive the motor by the following methods. (1) Motor drive pulse rate During paper feeding with Vp under 7.5V, the motor should be driven lower than the value obtained by equation (1). Equation (1): = Vp  400 - 600 (pps) Maximum motor drive pulse rate at Vp (pps) Motor drive voltage (V) *: The motor should be driven lower than 2400pps when Vp is 7.5V or higher.
  • Page 25 (2) Motor speed control When driving the motor, the acceleration control is required to maintain the paper feed force of start up. If acceleration of the motor does not perform correctly, the motor may not be able to rotate normally if it has a heavy workload.

  • Page 26: Table 3-6 Acceleration Steps

    Table 3-6 Acceleration Steps Drive pulse Drive pulse Number of Step Time Number of Step Time rate rate Steps (μs) Steps (μs) (pps) (pps) Start 4654 1707 4654 1733 2876 1760 2221 1786 1865 1811 1635 1836 1471 1861 1348 1885 1251 1910...

  • Page 27: Table 3-7 Maximum Continuous Drive Time And Drive Ratio

    (3) Preventing overheat To prevent the motor from overheating, the maximum continuous drive time and drive ratio are limited. Table 3-7 shows the maximum continuous drive time and drive ratio when a print length is within 1m. Set the drive time and pause time of the motor according to the values shown in Table 3-7. Also, Table 3-8 shows the drive time and the paper length at temperature rise of 50°C.

  • Page 28: Table 3-8 Maximum Continuous Drive Time (Min) And Paper Feed Length (M) At

    Table 3-8 Maximum Continuous Drive Time (min) and Paper Feed Length (m) at Temperature Rise 50°C Motor Drive Voltage Vp (V) 9.5V≧Vp＞ 8.5V≧Vp＞ 7.5V≧Vp＞ 6.5V≧Vp＞ 5.5V≧Vp＞ 4.75V Drive Pulse 8.5V 7.5V 6.5V 5.5V 4.75V Rate (pps) (m or (m or (m or (m or (m or...

  • Page 29: Table 3-10 Maximum Drive Time (Min) And Paper Feed Length (M) At Temperature

    Table 3-10 Maximum Drive Time (min) and Paper Feed Length (m) at Temperature Rise 50°C (When the Same Control as the LTPZ245M Is Used) Motor Drive Voltage Vp (V) 9.5V≧Vp＞ 8.5V≧Vp＞ 7.5V≧Vp＞ 6.5V≧Vp＞ 5.5V≧Vp＞ 4.2V Drive Pulse 8.5V 7.5V 6.5V 5.5V 4.2V Rate (pps)

  • Page 30: Motor Drive Precautions

    3.3.6 Motor Drive Precautions  Using the motor drive circuit other than the circuit shown in Section 3.3.2 Sample Drive Circuit may not ensure the specified efficiency.  To prevent degradation in the print quality due to the backlash of the paper drive system, feed the thermal paper for 48 steps or more at the initialization, at a time after setting/releasing the platen unit, at a time after feeding the thermal paper backward, and a time after cutting with a paper cutter.

  • Page 31: Thermal Head

    3.4 THERMAL HEAD The thermal head consists of heat elements and a thermal head driver that drives and controls the heat elements. When printing data is input from DI, print is "High" and non-print is "Low". The data from the DI is transferred to the shift register at the rising edge of the CLK signal. The data is stored into the latch register by making /LAT signal "Low"...

  • Page 32: Print Position Of The Data

    Table 3-12 DST and Activated Heat Elements Dots Number/ Block DST No. Heat Element No. DST1 1 to 64 DST2 65 to 128 DST3 129 to 192 DST4 193 to 256 DST5 257 to 320 DST6 321 to 384 3.4.2 Print Position of the Data 384-bit data (#1 to #384) transferred through DI are printed as shown in Figure 3-8.

  • Page 33: Electrical Characteristics Of Thermal Head

    3.4.3 Electrical Characteristics of Thermal Head Table 3-13 and Table 3-14 shows electrical characteristics of thermal head. Table 3-13 Electrical Characteristics of Thermal Head (Vdd: 3.0 V to 3.6 V) (Temperature : 25 C) Vdd: 3.0 V to 3.6 V Rated value Item Symbol...

  • Page 34: Thermal Head Heat Element Resistance

    Table 3-14 Electrical Characteristics of Thermal Head (Vdd: 4.75 V to 5.25 V) (Temperature : 25 C) Vdd: 4.75 V to 5.25 V Rated value Item Symbol Conditions Unit Min. Typ. Max. Thermal head 162.0 180.0 198.0 Ω heat element resistance Thermal Head drive voltage at the number of simultaneously Thermal Head drive current...

  • Page 35: Maximum Current Consumption

    3.4.4 Timing Chart Figure 3-9 shows a thermal head drive timing chart. /LAT Figure 3-9 Thermal Head Drive Timing Chart 3.4.5 Thermal Head Heat Element Resistance Table 3-15 shows resistance of the thermal head heat element of the printer. Table 3-15 Thermal Head Heat Element Resistance Thermal Head Heat Element Resistance 162.0 Ω...

  • Page 36: Controlling The Activation Pulse Width For Thermal Head

    3.5 CONTROLLING THE ACTIVATION PULSE WIDTH FOR THERMAL HEAD To execute high quality printing using the printer, the activation pulse width according to printer use condition must be used. Control printing with the activation pulse width calculated by the following sequence. Printing at too high voltage or too long activation pulse width may shorten the life of the thermal head.

  • Page 37: Calculation Of Printing Energy

    3.5.2 Calculation of Printing Energy The printing energy "E" can be calculated using equation (4) as the appropriate printing energy is different depending on each specified thermal paper and the temperature of the thermal head. Equation (4):   － －...

  • Page 38: Adjustment Of Thermal Head Drive Voltage

    3.5.4 Adjustment of Thermal Head Drive Voltage The adjusted voltage "V" can be calculated using equation (6) and (7) as the printing density changes by the difference of the thermal head drive voltage. Equation (6) V=1.142×Vp-1.347(5.5V≦Vp≦9.5V) Equation (7) V=1.370×Vp-2.601(4.75V≦Vp≦5.5V) Thermal head drive voltage (V) 3.5.5 Setting of Activation Pause Time In order to protect the thermal head heat elements, when the same heat element dots are activated continuously on the successive dot line, determine the activation pulse cycle (the time from the start of the...

  • Page 39: Adjustment By Thermal Head Activation Cycle

    3.5.6 Adjustment by Thermal Head Activation Cycle The thermal head activation pulse cycle coefficient "C" can be calculated using equations (9) as the printing density varies by the thermal head activation pulse cycle (equivalent for motor drive pulse rate). Equation (9): 1450 ×...

  • Page 40: Calculation Sample For The Activation Pulse Width

    3.5.7 Calculation Sample for the Activation Pulse Width Table 3-17 lists the calculation samples of the activation pulse width calculated using equation (3) and the values obtained using equations (4) to (8). Table 3-17 Activation Pulse Width Unit：ms Motor drive pulse rate (pps) （V）...

  • Page 41: Temperature Characteristics Of The Thermistor

    3.5.8 Temperature Characteristics of the Thermistor Calculate the resistance of the thermistor (R ) at the operating temperature T (C) using the following equation (9). Variation of resistance by temperature is shown in Figure 3-11 and Table 3-18. Equation (9): ×...

  • Page 42: Table 3-18 Temperature Characteristics Of The Thermistor

    Table 3-18 Temperature Characteristics of the Thermistor Thermistor Temperature (C) Resistance (kΩ) 316.97 234.22 175.07 132.29 100.99 77.85 60.57 47.53 37.61 30.00 24.11 19.51 15.89 13.03 10.75 8.92 7.45 6.25 5.27 4.47 3.80 3.25 2.79 2.41 2.09 3-27...

  • Page 43: Detecting Abnormal Temperature Of The Thermal Head

    3.5.9 Detecting Abnormal Temperature of the Thermal Head To protect the thermal head and to ensure personal safety, abnormal temperature of the thermal head must be detected by both hardware and software as follows: (1) Detecting abnormal temperatures by software Design software that will deactivate the heat elements if the thermal head thermistor (TH) detects a temperature higher than 70°C (thermistor resistance R ≦5.27 kΩ), and reactivate the heat elements...

  • Page 44: Platen Position Sensor

    3.6 PLATEN POSITION SENSOR LTP01-245-12 has a built-in platen position sensor for detecting whether the platen unit is set. This sensor is a mechanical switch which is designed to be ON when the platen unit is set and to be OFF when it is released. The external circuit should be designed to detect output from the platen position sensor and output from the out-of-paper sensor described in 3.6.

  • Page 45: Out-Of-Paper Sensor

    3.7 OUT-OF-PAPER SENSOR The printer has a built-in out-of-paper sensor (reflection type photo interrupter) to detect whether the thermal paper is present or not. An external circuit should be designed so that it detects output from the out-of-paper sensor and does not activate the thermal head and motor when there is no paper. Doing not so may cause damage to the thermal head or platen or shorten the life of the thermal head significantly.

  • Page 46: Chapter4 Connecting Terminals

    CHAPTER 4 CONNECTING TERMINALS 4.1 RECOMMENDED CONNECTOR FOR EXTERNAL CIRCUITS Use the recommended connectors listed in Table 4-1 to connect the printer connecting terminals firmly to the external circuits. Table 4-1 Recommended Connectors Number of Recommended Connectors Terminals FCI INC: SFW30R-2STE1LF (right angle, top contact) SFW30S-2STE1LF (vertical) SLW30S-1C7LF...

  • Page 47: Table 4-2 Terminal Assignments Of The Connecting Terminal

    Table 4-2 Terminal Assignments of the Connecting Terminal Function Terminal Terminal Number Name LTP01-245-11/18 LTP01-245-12 GND of the out-of-paper sensor (LED cathode) Power supply of the out-of-paper sensor (LED anode, Photo-transistor collector) Output of the out-of-paper sensor (photo-transistor emitter) No connection Platen position sensor GND No connection Platen position sensor output...

  • Page 48: Chapter5 Print Drive Method

    CHAPTER 5 PRINT DRIVE METHOD 5.1 MOTOR AND THERMAL HEAD DRIVE METHOD The motor and the thermal head must be driven at the same time for printing. The printer uses the thermal head with heat elements which size is a half-dot size of the feed direction. One dot is, therefore, composed of two of the half dots.
  • Page 49 The drive method using division printing is described below (See Figure 5-1): (1) Pause state Inactivate the motor and always make DST signal of the thermal head "Low". (2) Start step Excite the motor by the same phase which is output just before the motor stops. (3) 1st dot line Drive the motor for one step.

  • Page 50: Thermal Head Division Drive Method

    5.2 THERMAL HEAD DIVISION DRIVE METHOD In the thermal head of the printer, there are 6 blocks in 1 dot line. Each block has 64 dots. Division drive method is applicable using these blocks. These blocks are called physical blocks. DST signal is allocated to each physical block to activate it.

  • Page 51: Chapter6 Outer Case Design Guide

    CHAPTER 6 OUTER CASE DESIGN GUIDE 6.1 SECURING THE PRINTER MAIN BODY 6.1.1 How to Mount the Printer Main Body Figure 6-1 shows dimensions for positioning and securing the printer main body.  Holes #1 and #2 must be used for positioning the printer main body. Design bosses on the outer case to position the printer main body for the positioning holes #1 and #2.

  • Page 52: Recommended Screws

    6.1.2 Recommended Screws The recommended mounting screw is as follows:  JIS B1111 : M2 cross-recessed pan head screw 6.1.3 Precautions for Securing the Printer Main Body  Prevent from excessive stress, deformation, and torsion for securing the printer, otherwise poor printing quality, paper skewing, paper jamming, and noise during printing may be caused.

  • Page 53: Securing The Platen Unit (Recommended Shape And Dimensions)

    6.2 SECURING THE PLATEN UNIT (RECOMMENDED SHAPE AND DIMENSIONS) Design the platen holder at the outer case to mount the platen unit. 6.2.1 Recommended Shape of the Platen Holder Figure 6-2 shows a recommended shape of the Platen Holder. platen holder platen gear Center of platen at fixed Section A-A...

  • Page 54: Dimensions For Positioning And Securing The Platen Holder

    6.2.2 Dimensions for Positioning and Securing the Platen Holder Figure 6-3 shows the working range of center of the rotation system for the platen holder when opening/closing the platen unit mounted on the outer case. Positioning hole #1 Rotation center for platen holder 50～100 X±0.3 Unit...

  • Page 55: Precautions For Securing The Platen Holder

    6.2.3 Precautions for Securing the Platen Holder  Design the platen holder to avoid contact with the thermal head.  It is recommended to have guide on the platen holder so that the platen is easy to be released and set.

  • Page 56: Layout Of The Printer Mechanism And The Thermal Paper

    6.3 LAYOUT OF THE PRINTER MECHANISM AND THE THERMAL PAPER Note the following precautions for the layout of the thermal paper.  Figure 6-4 shows recommended lay out of the printer mechanism and the thermal paper.  The paper guide is required on the paper holder as shown on the Figure 6-2 so the thermal paper is led to paper inlet of the printer properly in order to improve paper detection stability.

  • Page 57: Where To Mount The Paper Holder

    6.4 WHERE TO MOUNT THE PAPER HOLDER When designing the layout of the paper holder, note the followings. The recommended configuration of the paper holder is shown in Figure 6-5.  Design the paper holder and the paper guide so that the thermal paper will be straight to the paper inlet port without any horizontal shifting and so that the center axis of the paper roll will be parallel to the printer when using paper roll.

  • Page 58: Design The Paper Outlet

    6.5 DESIGN THE PAPER OUTLET 6.5.1 Design the Shape of the Paper Outlet When designing the shape of the paper outlet, note the followings.  Design the shape of the paper outlet of outer case so that stress is not applied to the thermal paper to be ejected.

  • Page 59: Mount The Paper Cutter

    6.5.2 Mount the Paper Cutter  Design paper cutter mounting position so the edge of the cutter blade does not touch with a platen unit when the platen unit is set and released.  Use a well-cut cutter so that the thermal paper can be cut with less force than paper holding force. ...

  • Page 60: How To Connect A Paper Winder

    6.6 HOW TO CONNECT A PAPER WINDER 6.6.1 Precautions for Connecting the Paper Winder  Do not feed winded thermal paper backwards. Backward feed may cause a failure of winding.  The winding force should be 0.49N (50gf) or less. Be aware that the printing problem may occur when the tension changed rapidly even though the winding force is below 0.49N.

  • Page 61: Chapter7 External Dimensions

    CHAPTER 7 EXTERNAL DIMENSIONS Figure 7-2 shows the external dimensions of the platen unit. Figure 7-3 and Figure 7-3 show the external dimensions of LTP01-245-11, LTP01-245-12, and LTP01-245-18 respectively. 65.8 58.1 Unit : mm : ±0.5 General tolerance Figure 7-1 External Dimensions of the Platen Unit...

  • Page 62: Figure 7-2 External Dimensions Of The Printer (Ltp01-245-11/18)

    62.2 ±0.1 59.15 ±0.1 50.5 ±0.1 3.35 56.45 3.95 69.8 69.3 3.65 ±0.2 10.7 +0.2 58.2 (Paper insert width) 5.55 15.3 9.95 ±2 Unit : mm : ±0.5 General tolerance Figure 7-2 External Dimensions of the Printer (LTP01-245-11/18)

  • Page 63: Figure 7-3 External Dimensions Of The Printer (Ltp01-245-12)

    62.2 ±0.1 59.15 ±0.1 50.5 ±0.1 3.35 56.45 3.95 70.3 69.3 3.65 ±0.2 10.7 +0.2 58.2 (Paper insert width) 5.55 15.3 9.95 ±2 Unit : mm : ±0.5 General tolerance Figure 7-3 External Dimensions of the Printer (LTP01-245-12)

  • Page 64: Chapter8 Handling Method

    CHAPTER 8 HANDLING METHOD 8.1 INSTALLING/UNINSTALLING THE THERMAL PAPER 8.1.1 Procedures for Installing/Uninstalling the Thermal Paper (1) Procedures for installing the thermal paper by the easy operation (setting and releasing the platen block) (a) Installing the thermal paper  Install the thermal paper with the paten unit released. ...

  • Page 65: Precautions For Installing/Uninstalling The Thermal Paper

     Insert the thermal paper straight all the way in. Feed the thermal paper pushing it. See "3.3.5 Motor Drive Method" for motor drive pulse rate. (b) Procedures for Uninstalling the Thermal Paper  Cut the thermal paper near the paper inlet of the printer mechanism. ...

  • Page 66: Precautions For Cleaning The Thermal Head

    Thermal head heat element Figure 8-2 Cleaning Position of the Thermal Head 8.2.2 Precautions for Cleaning the Thermal Head  Do not clean the thermal head immediately after printing because the temperature of the thermal head and its peripherals rises very high during and immediately after printing. ...

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