Seiko SII LTP01-245-11 Technical Reference

U00129248800 November 2012 U00129248801 January 2013 U00129248802 March 2013 U00129248803 April 2013 U00129248804 June 2013 U00129248805 November 2013 U00129248806 August 2014 U00129248807 July 2015 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. SII reserves the right to make changes without notice to the specifications and materials contained herein and shall not be responsible for any damages (including consequential) caused by reliance on the materials presented, including but not limited to typographical, arithmetic, or listing errors. is a trademark of Seiko Instruments Inc.

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. Chapter 1 "Precautions" describes safety, design, and handling precautions. Read it thoroughly before designing so that you are able to use the product properly. SII has not investigated the intellectual property rights of the sample circuits included in this manual. Fully investigate the intellectual property rights of these circuits before using. It is possible to use the LTP01 series for replacing LTPZ245M-C384-E thermal printer mechanism (hereinafter referred to as "LTPZ245M"). In this manual, the description of negative logic has an additional "/" in the beginning of the terminal name. The input/output direction is described from the product side. The printer complies with EU RoHS Directive (2011/65/EU) The printer contains "Pb". The details are described below.  a particular free-cutting steel parts, a particular component in glass of the electronic parts *: Lead-containing items listed above are exempt from RoHS (2011/65/EU). PREFACE-1

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. Thermal head Connecting terminals Platen gear Platen Platen unit Printer main body Out-of-paper sensor Motor Platen position sensor LTP01-245-12 LTP01-245-18 Printer mechanism PREFACE-2

CHAPTER1 PRECAUTIONS 1-1 1.1 SAFETY PRECAUTIONS......................................................................................1-2 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 2-1 CHAPTER3 SPECIFICATIONS 3-1 3.1 GENERAL SPECIFICATIONS ..............................................................................3-1 3.2 PRINT CONFIGURATION.....................................................................................3-3 3.3 STEP MOTOR.......................................................................................................3-4 3.3.1 General Specifications ..................................................................................3-4 3.3.2 Sample Drive Circuit......................................................................................3-5 3.3.3 Excitation Sequence......................................................................................3-7 3.3.4 Motor Start/Stop Method ...............................................................................3-8 3.3.5 Motor Drive Method.......................................................................................3-9 3.3.6 Motor Drive Precautions..............................................................................3-15 3.4 THERMAL HEAD ................................................................................................3-16 3.4.1 Structure of the Thermal Head....................................................................3-16 3.4.2 Print Position of the Data.............................................................................3-17 3.4.3 Electrical Characteristics of Thermal Head.................................................3-18 3.4.4 Timing Chart................................................................................................3-20 3.4.5 Thermal Head Heat Element Resistance....................................................3-20 3.4.6 Maximum Current Consumption .................................................................3-20 3.5 CONTROLLING THE ACTIVATION PULSE WIDTH FOR THERMAL HEAD....3-21 3.5.1 Calculation of Activation Pulse Width..........................................................3-21 3.5.2 Calculation of Printing Energy.....................................................................3-22 3.5.3 Adjustment of Thermal Head Resistance....................................................3-22 3.5.4 Adjustment of Thermal Head Drive Voltage................................................3-23 3.5.5 Setting of Activation Pause Time ................................................................3-23 3.5.6 Adjustment by Thermal Head Activation Cycle...........................................3-24 3.5.7 Calculation Sample for the Activation Pulse Width .....................................3-25 3.5.8 Temperature Characteristics of the Thermistor ..........................................3-26 3.5.9 Detecting Abnormal Temperature of the Thermal Head.............................3-28 3.6 PLATEN POSITION SENSOR ............................................................................3-29 3.6.1 General Specifications ................................................................................3-29 3.6.2 Precautions for the Platen Position Sensor.................................................3-29 3.7 OUT-OF-PAPER SENSOR .................................................................................3-30 3.7.1 General Specifications ................................................................................3-30

CHAPTER4 CONNECTING TERMINALS 4-1 4.1 RECOMMENDED CONNECTOR FOR EXTERNAL CIRCUITS ..........................4-1 4.2 CONNECTING TERMINALS.................................................................................4-1 CHAPTER5 PRINT DRIVE METHOD 5-1 5.1 MOTOR AND THERMAL HEAD DRIVE METHOD ..............................................5-1 5.2 THERMAL HEAD DIVISION DRIVE METHOD.....................................................5-3 5.3 PRECAUTIONS FOR PRINT DRIVE....................................................................5-3 CHAPTER6 OUTER CASE DESIGN GUIDE 6-1 6.1 SECURING THE PRINTER MAIN BODY .............................................................6-1 6.1.1 How to Mount the Printer Main Body ............................................................6-1 6.1.2 Recommended Screws .................................................................................6-2 6.1.3 Precautions for Securing the Printer Main Body ...........................................6-2 6.2 SECURING THE PLATEN UNIT (RECOMMENDED SHAPE AND DIMENSIONS) .................................................6-3 6.2.1 Recommended Shape of the Platen Holder..................................................6-3 6.2.2 Dimensions for Positioning and Securing the Platen Holder ........................6-4 6.2.3 Precautions for Securing the Platen Holder..................................................6-5 6.3 LAYOUT OF THE PRINTER MECHANISM AND THE THERMAL PAPER .........6-6 6.4 WHERE TO MOUNT THE PAPER HOLDER .......................................................6-7 6.5 DESIGN THE PAPER OUTLET ............................................................................6-8 6.5.1 Design the Shape of the Paper Outlet ..........................................................6-8 6.5.2 Mount the Paper Cutter.................................................................................6-9 6.6 HOW TO CONNECT A PAPER WINDER...........................................................6-10 6.6.1 Precautions for Connecting the Paper Winder............................................6-10 CHAPTER7 EXTERNAL DIMENSIONS 7-1 CHAPTER8 HANDLING METHOD 8-1 8.1 INSTALLING/UNINSTALLING THE THERMAL PAPER ......................................8-1 8.1.1 Procedures for Installing/Uninstalling the Thermal Paper.............................8-1 8.1.2 Precautions for Installing/Uninstalling the Thermal Paper ............................8-2 8.2 CLEANING THE THERMAL HEAD.......................................................................8-2 8.2.1 Procedures for Cleaning the Thermal Head .................................................8-2 8.2.2 Precautions for Cleaning the Thermal Head.................................................8-3

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 .......................................................................3-8 Figure 3-7 Thermal Head Block Diagram......................................................................3-16 Figure 3-8 Transfer Data and Print Position..................................................................3-17 Figure 3-9 Thermal Head Drive Timing Chart...............................................................3-20 Figure 3-10 Time from the start of the preceding thermal head activation to the start of the current thermal head activation (W')......................................................3-24 Figure 3-11 Temperature Characteristics of the Thermistor...........................................3-26 Figure 3-12 Sample External Circuit of the Platen Position Sensor................................3-29 Figure 3-13 Sample External Circuit of the Out-of-Paper Sensor...................................3-30 Figure 4-1 Connecting Terminals....................................................................................4-1 Figure 5-1 Timing Chart for Division Printing ..................................................................5-1 Figure 6-1 Dimensions for Positioning and Securing the Printer Main Body..................6-1 Figure 6-2 Dimensions for Positioning and Securing the Platen Unit .............................6-3 Figure 6-3 Dimensions to Mount the Platen Unit ............................................................6-4 Figure 6-4 Recommended Layout between the Printer Mechanism and the Thermal Paper .........................................................................................6-6 Figure 6-5 Recommended Paper Holder Dimensions ....................................................6-7 Figure 6-6 Paper Path .....................................................................................................6-8 Figure 6-7 Blade Edge.....................................................................................................6-9 Figure 7-1 External Dimensions of the Platen Unit .........................................................7-1 Figure 7-2 External Dimensions of the Printer (LTP01-245-11/18).................................7-2 Figure 7-3 External Dimensions of the Printer (LTP01-245-12)......................................7-3 Figure 8-1 Shape of the Thermal Paper Edge ................................................................8-1 Figure 8-2 Cleaning Position of the Thermal Head.........................................................8-3

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.......................................................................................3-11 Table 3-7 Maximum Continuous Drive Time and Drive Ratio......................................3-12 Table 3-8 Maximum Continuous Drive Time (min) and Paper Feed Length (m) at Temperature Rise 50°C ...............................................................................3-13 Table 3-9 Maximum Continuous Drive Time and Drive Ratio (When the Same Control as the LTPZ245M Is Used).................................3-13 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)................3-14 Table 3-11 Maximum Drive Time (min) and Paper Feed Length (m) at Temperature Rise 75°C (When the Same Control as the LTPZ245M Is Used)................3-14 Table 3-12 DST and Activated Heat Elements ..............................................................3-17 Table 3-13 Electrical Characteristics of Thermal Head (Vdd: 3.0 V to 3.6 V)................3-18 Table 3-14 Electrical Characteristics of Thermal Head (Vdd: 4.75 V to 5.25 V)............3-19 Table 3-15 Thermal Head Heat Element Resistance ....................................................3-20 Table 3-16 Standard Printing Energy and Temperature Coefficient..............................3-22 Table 3-17 Activation Pulse Width .................................................................................3-25 Table 3-18 Temperature Characteristics of the Thermistor...........................................3-27 Table 3-19 General Specifications of Platen Position Sensor .......................................3-29 Table 3-20 Out-of-Paper Sensor ...................................................................................3-30 Table 4-1 Recommended Connectors ...........................................................................4-1 Table 4-2 Terminal Assignments of the Connecting Terminal.......................................4-2

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. Sufficient evaluation and confirmation should be performed with the designed outer case mounted, to ensure proper use of the printer. SII shall not be liable for any and all claims, actions, lawsuits, demands, costs, liabilities, losses, damages and/or expenses that are caused by improper handling of the printer, any use not contained in this manual or that result from the outer case, unless such damages and/or loss originate from the printer itself. SII makes no warrant that your products into which built the sample circuits included in this manual can work properly and safe. You shall evaluate and confirm sufficiently that such products can work properly and safe, and shall be liable for any and all claims, actions, lawsuits, demands, costs, liabilities, losses, damages and/or expenses arising out of or in relating to such products. SII has not investigated the intellectual property rights of the sample circuits included in this manual. Fully investigate the intellectual property rights of these circuits before using. The printer is designed and manufactured to be mounted onto general electronic equipment. If high reliability is required of the printer in respect to hazardous influences on the body or life and loss to property, redundant design of the entire system should be carried out and verify the performance with your actual device before commercialization. Our sales representative should be informed as such in advance. Follow the precautions listed below when designing your product for using safely. Include any necessary precautions into your operation manual to ensure safe operation of your product by users. 1-1

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. Follow the method described in Chapter 3 "Detecting abnormal temperatures by hardware" to monitor the temperature of the thermal head to prevent overheating. Turn the printer off immediately if any abnormal conditions occur.  Precautions for rising temperatures of the thermal head Temperature of the thermal head and its peripherals rises very high during and immediately after printing. Be sure to design the outer case to prevent users from burn injuries by touching them. Place warning labels to warn users to ensure safe operation. As for thermal head cleaning, warn users to allow the thermal head to cool before cleaning. In order to allow cooling, secure clearance between the thermal head and the outer case when designing the outer case.  Precautions for rising temperatures of the motor Temperature of the motor and its peripherals rises very high during and immediately after printing. Be sure to design the outer case to prevent users from burn injuries by touching them. Place warning labels to warn users to ensure safe operation. In order to allow cooling, secure clearance between the motor and the outer case when designing the outer case.  Precautions for sharp edges of the printer The printer may have some sharp edges and cutting surfaces of the metal parts. Be sure to design the outer case to prevent users from injuring himself/herself by touching the sharp edges and place warning labels to warn users to ensure safe operation.  Precautions for motor drive The hair may get caught in the exposed platen and the gears. Control the motor drive not to drive when the outer case and the platen unit is in open state. Also, make sure to design the outer case so as not to touch the platen and the gears and also prevent any objects from getting caught. Place warning labels to warn users to ensure safe operation. 1-2

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 → (2) Vdd  A surge voltage between Vp and GND should not exceed 10V.  For noise countermeasure, connect a 0.1μF capacitor between Vdd and GND pins near the connector.  Make the wire resistance between the power supply (Vp and GND) and the printer (connecting terminals) as small as possible (below 50mΩ). Keep distance from signal lines to reduce electrical interference.  The switch and the sensor may generate instantaneous abnormal signal. Design the firmware in order to prevent malfunction due to the abnormal signal.  Keep the Vp power off during not printing in order to prevent the thermal head from electrolytic corrosion. In addition, design the product so that the Signal Ground (GND) of the thermal head and the Frame Ground (FG) of the printer become the same electric potential.  Use C-MOS IC chips for CLK, /LAT, DI and DST signals of the thermal head.  When turning the power on or off, or during not printing, always disable the DST.  To prevent the thermal head, out-of-paper sensor, motor, and platen detection switch from being damaged by static electricity: (1) Connect the printer Frame Ground (FG) connecting area to the Frame Ground (FG) of the outer case. See Chapter 6 "OUTER CASE DESIGN GUIDE" for details. (2) Connect the Signal Ground (GND) to the Frame Ground (FG) through approximately 1 MΩ resistance.  Always detect the outputs of the platen position sensor and out-of-paper sensor. Never activate the thermal head when the platen unit is in open state and when there is no thermal paper. Incorrect activation of the thermal head may reduce the life of the thermal head and the platen and may damage them.  A pause time between thermal head activations of the same heat element shall be secured more than 0.5ms. Pay attention to when using one division printing or when a thermal head activation time becomes longer. If activating for a long time without the pause time, the thermal head may become damaged.  If too much energy is applied to the thermal head, it may overheat and become damaged. Always use the printer with the specified amount of energy shown in Chapter 3 "CONTROLLING THE ACTIVATION PULSE WIDTH FOR THERMAL HEAD".  Operation sound and vibration during printing vary depending on the motor pulse rate. Verify the performance with your actual device.  Paper feed force can be decreased depending on the motor pulse rate. Verify the performance with your actual device.  Do not perform continuous printing to prevent the motor from overheating. Refer to Chapter 3 "Motor Drive Method" to set a pause time. 1-3

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.  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.  Surface of thermal paper may get scratched by backward feed. The backward feed may cause paper skew and jams depending on paper roll layout and designing of paper holder. Be sure to confirm performance with your product before using the backward feed.  If printing at a high print ratio for longer length, non-printing area may be colored due to an accumulation of heat. Verify the performance with your actual device.  It is recommended that the door is guided by part of the outer case, when the platen unit is set into the printer main body. If the rotation fulcrum of the rotation system of the door is configured to the component mounting the printer main body, could design with high accuracy.  A door on the outer case that holds the platen unit must be set by pushing the center of the platen unit. If only one end of the platen unit is set, a print defect, and/or a paper jam will occur. Verify the performance with your actual device. In order to be pushed the center of the platen to set it, put an indication to do so.  If the printer main body and the platen unit are not placed in proper position, the print defect and the paper jam may occur. Therefore, pay special attention to it when designing the outer case. For the position relation between the printer main body and the platen unit, see Chapter 6 "OUTER CASE DESIGN GUIDE".  Design the rotation system of the door and the outer case strong enough to keep the allowable dimensions because stress is applied to them when setting and releasing the platen unit. The rotation center for the rotation system of the door should be designed to fit the rotational shaft into the shaft hole so that the platen unit should be stable when it is in the close state.  Design the thermal paper supply system in accordance with Chapter 6 "OUTER CASE DESIGN GUIDE". When the thermal paper supply position is improper, print difficulty or paper detection difficulty will be caused and the surface of thermal paper may get scratched. Verify the performance with your actual device.  Do not use labeling paper, 2-ply thermal paper, and the thermal paper with thickness of 75μm or thicker.  Design the outer case so that a tension force is not applied to the FPC. The FPC could be moved by setting/releasing the platen unit, so design the product so that the FPC has enough play after connected it. The tension force may cause some print problems and may damage the FPC.  Metal parts may become discolored and rusted due to the operational environment. Consider these factors regarding appearance.  Pressure or stress for direction where the platen unit is released should be applied only when the platen unit is actually released. Permanent pressure or stress for releasing the platen unit may cause slipping gears, negative influence on printing quality, and printing troubles during operation.  Contrary to the LTPZ245M, it is required to prevent overheating in the printer. See "3.3.6 Motor Drive Precautions" for details. 1-4

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. The followings are examples of trouble: (1) Poor printing quality due to low thermal sensitivity (2) Abrasion of the thermal head due to the thermal paper surface roughness (3) Printing stuck and unusual noise due to sticking the thermal layer of the thermal paper to the thermal head (4) Printing fade due to low preservability of the thermal paper (5) Electrolytic corrosion of the thermal head due to inferior paper  After the printer has been left not in use for long period of time, the platen could be deformed and resulted in print quality deteriorated. In this case, feed the thermal paper for a while to recover deformation of the platen. If the thermal head is remained in contact with the platen without thermal paper for a long time, the platen and the thermal head may be stuck together and cause paper feed difficulty. If facing this problem, release the platen unit, and set it back again before starting printing.  Never loosen the screws that fasten respective parts of the printer. Loosened screws may reduce the efficiency of the performance of the printer mechanism.  Do not release the platen unit during printing; otherwise this may reduce the efficiency of the printer and may cause damage.  Do not apply stress to the platen unit during printing. The print defect may occur.  When setting the platen unit, the reduction gear may interfere with the platen gear and may cause the platen unit to not be set. In such a case, release the platen unit and set it again.  Never pull out the thermal paper while the platen unit is set. The printer mechanism may become damaged.  When handling the printer, make sure to use antistatic clothing and to ground yourself to prevent the electronic parts such as thermal head, out-of-paper sensor, motor, and platen detection switch from damaged by static electricity. Especially take care of the thermal head heat element and the connecting terminal.  Do not hit or scratch the surface of the thermal head with any sharp or hard object. This could damage the thermal head.  When printing at a high print ratio in a low temperature or high humidity environment, the vapor from the thermal paper during printing may cause condensation to form on the printer and soil the thermal paper itself. Prevent the thermal head from a drop of water. It may cause electrolytic corrosion of the thermal head. If condensed, do not activate electricity until dried.  Connect or disconnect the connecting terminal after turn off the power.  Do not apply stress to the FPC while connecting and disconnecting them. Otherwise the FPC may become damaged.  Warn users not to pull the thermal paper and not to change the paper eject angle during printing. Otherwise, the paper jam or the cut failure may occur. 1-5

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.  Do not use the paper roll with glued end or folded end. In case of using such paper roll, replace to a new one before the end of the paper roll is shown up.  The printer is not waterproof and drip proof. Prevent contact with water and do not operate with wet hands as it may damage the printer or may cause a short circuit or fire.  The printer is not dust proof. Never use the printer in a dusty place, as it may damage the thermal head and paper drive system.  Do not use the printer in corrosive gas and siloxane atmosphere as it may cause the contact failure. 1.2.3 Precautions on Discarding When discarding used printers, discard them according to the disposal regulations and rules of each respective district. * : Refer to the manual for other information on precautions.

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) Mass : Approx. 44 g  High print speed* Maximum 75mm/s print is available.  Easy operation Platen open mechanism provides easy paper installation.  Auto-loading function Automatic insertion of the thermal paper is enabled by the Auto-loading function.  Maintenance Free No cleaning and no maintenance required.  Low noise Thermal printing technology realizes low-noise print.  Replaceability Possible for full replacement from LTPZ245M. : Print speed differs depending on working conditions. 2-1

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. Resolution W 8 dots/mm × H 16 dots/mm Paper feed pitch 0.03125 mm Maximum print speed 75 mm/s*1 Print width 48 mm Paper width 0 1 - 58 mm Thermal head temperature detection Thermistor Platen position detection None Mechanical switch Out-of-paper detection Reflection type photo interrupter Operating voltage range Vp line Vdd line 4.75 V to 9.5 V 3.0 V to 3.6 V, or 4.75 V to 5.25 V Current consumption Vp line Thermal head drive Motor drive Vdd line Thermal head logic 3.76 A max. (at 9.5 V) *2 0.65 A max. 0.1 A max.

0°C to 50°C (Non condensing) Operating humidity range Temperature(℃） Relative Humidity（%RH） 50℃52%RH 45℃64%RH 40℃85%RH 0 10 20 30 40 50 100 90 80 70 60 50 40 30 20 10 0 Storage temperature range -25°C to 60°C (Non condensing) Activation pulse resistance 100 million pulses or more*3 Life span (at 25°C and rated energy) Abrasion resistance 50 km or more*4 Paper feed force 0.49 N (50 gf) or more Paper hold force 0.78 N (80 gf) or more Dimensions*5 W 69.8 mm × D 32.7 mm × H 15.3 mm W 70.3 mm × D 32.7 mm × H 15.3mm Mass Approx. 44 g Specified thermal paper Nippon Paper TF50KS-E2D Oji Paper Co., Ltd. PD150R PD160R-N Papierfabrik August Koehler AG KT55F20 Mitsubishi Paper mills limited F220VP Jujo Thermal AF50KS-E AP50KS-FZ Mitsubishi Hi-Tech Paper F5041 KSP P300 *1 : Print speed changes according to the processing speed of the controller and print pulse width of the thermal head. *2 : The value when the number of simultaneously activated dots is 64 dots. *3 : Excluded when the same dots are printed continuously. *4 : Excluding damage caused by dust and foreign materials. *5 : Excluded convex part.

Figure 3-1 shows print dot pitch. Figure 3-2 shows print area. 48mm（384dot） 0.125mm 0.125mm 0.0625mm Figure 3-1 Print Dot Pitch 58 0 -1 mm(Paper width　) 5 mm 48 mm(Printing width) 5 mm Figure 3-2 Print Area

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 Winding resistance per phase 10.5 Ω/phase 10% Motor drive voltage Vp : 4.75 V to 9.5 V Motor controlled current 325 mA/phase*1（450 mA/phase*2） Drive pulse rate 2400 pps max. *1: During paper feeding/print. *2: During auto-loading the thermal paper. See "3.3.5 Motor Drive Method" for how to set the motor controlled current.

(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. Drive Condition Motor Controlled Current (Fixed) VLIM Terminal Input Voltage Paper feeding/Printing 325 mA 161 mV to 167 mV Printer Connecting Term inals PH1 PH2 PH3 PH4 MCL1 BD6380EFV IN1A OUT1A IN2A OUT2A IN1B OUT1B IN2B OUT2B PS VREF RNF1 SENSE1 VLIM1 VLIM2 RNF2 SENSE2 CR1 CR2 NC NC 14 10 + 47μF 25V Vp 4 18 2 47kΩ FUSE 1A 15 11 19 7 6 24 1 Vdd 16 9 23 3 5 20 12 0.5Ω1% 0.125W 21 13 0.5Ω1% 0.125W 18kΩ 18kΩ 680pF 680pF 22 27 29 28 30 A B /A /B 0.1μF 8 17 13.0kΩ±1% 2.55kΩ±1% 0.1μF Vdd GND VM1 VM2 * : Recommended motor driver : BD6380EFV(Rohm) Figure 3-3 Sample Drive Circuit 1

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. Drive Condition Motor Controlled Current VLIM Terminal Input Voltage Paper feeding/Printing 325 mA 161 mV to 167 mV Auto-loading 450 mA 222 mV to 228 mV Printer Connecting Term inals PH1 PH2 PH3 PH4 MCL1 BD6380EFV IN1A OUT1A IN2A OUT2A IN1B OUT1B IN2B OUT2B PS VREF RNF1 SENSE1 VLIM1 VLIM2 RNF2 SENSE2 CR1 CR2 NC NC 14 10 + 47μF 25V Vp 4 18 2 47kΩ FUSE 1A 15 11 19 7 6 24 1 Vdd 16 9 23 3 5 20 12 0.5Ω1% 0.125W 21 13 0.5Ω1% 0.125W 18kΩ 18kΩ 680pF 680pF 22 27 29 28 30 A B /A /B 0.1μF 8 17 0.1μF Vdd GND VM1 VM2 MREF * : Recommended motor driver : BD6380EFV(Rohm) Figure 3-4 Sample Drive Circuit 2

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, . . . . , as shown in Table 3-3. START STEP 1st STEP 2nd STEP 3rd STEP 4th STEP 5th STEP 6th STEP 7th STEP 8th STEP PH1 H L PH2 H L PH3 H L PH4 H L 1 dot-line MCL1*1 H L MREF 0.1625V*2 0V *1: Set MCL1 to "High" while the motor is driven. *2: 0.1625V during paper feeding/print, 0.225V during auto-loading. Figure 3-5 Input Voltage Waveforms for the Sample Drive Circuit Table 3-3 Excitation Sequence Input Signal Output Signal PH1 PH2 PH3 PH4 A B /A /B Step 1 H L L L H OFF L OFF Step 2 H L L H H L L H Step 3 L L L H OFF L OFF H Step 4 L L H H L L H H Step 5 L L H L L OFF H OFF Step 6 L H H L L H H L Step 7 L H L L OFF H OFF L Step 8 H H L L H H L L

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. To restart the motor from the stop step, immediately shift the motor to the sequence of print step. (2) Stop step To stop the motor, excite the same phase as the last one in the printing step for 65 ms. (3) Pause state In the pause state, do not excite the motor to prevent to the motor from overheating. Even when the motor is not excited, holding torque of the motor prevents the thermal paper from moving. Input signals for a sample drive circuit are shown in Figure 3-6. PH1 PH2 PH3 PH4 MCL1 MREF Print step Stop Print step step step 1 dot-line Pause Start H H H H H 0.1625V* 0V L L L L L 0.1625V during paper feeding/print, 0.225V during auto-loading. Figure 3-6 Motor Start/Stop Timing Chart

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): PM= Vp  400 - 600 (pps) PM : Maximum motor drive pulse rate at Vp (pps) Vp : Motor drive voltage (V) *: The motor should be driven lower than 2400pps when Vp is 7.5V or higher. Table 3-4 Maximum Motor Drive Pulse Rate Vp Maximum Motor Drive Pulse Rate 4.75 V 1300 pps 5.5 V 1600 pps 6.5 V 2000 pps 7.5 V 2400 pps 8.5 V 2400 pps 9.5 V 2400 pps During auto-loading the thermal paper, the motor should be driven lower than the value obtained by equation (2). Equation (2): PM= Vp  40 - 420 (pps) PM : Maximum motor drive pulse rate at Vp (pps) Vp : Motor drive voltage (V): 5V or higher Table 3-5 Maximum Motor Drive Pulse Rate (During auto-loading) Vp Maximum Motor Drive Pulse Rate 5.0 V 620 pps 5.5 V 640 pps 6.5 V 680 pps 7.5 V 720 pps 8.5 V 760 pps 9.5 V 800 pps

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. Accelerate the speed sequentially up to the maximum motor drive pulse rate PM according to the Table 3-6 Acceleration Steps. Acceleration should be performed by the acceleration step time below, that is output the phase. 1. Drive the start step as same as acceleration step time at Start acceleration step. 2. Drive the first step as same as acceleration step time at 1st acceleration step. 3. Drive the second step as same as acceleration step time at 2nd acceleration step. 4. Hereinafter, drive the "n"th step as same as acceleration step time at "n"th acceleration step. 5. After accelerating up to the maximum motor drive pulse rate PM, drive the motor at a constant speed. Available to print during acceleration. Follow the procedures below if : Unable to accelerate the speed according to the acceleration step as shown in Table 3-6 . The speed has been reduced at a certain speed and then accelerates the speed again. The next step time after reducing the speed is the closest acceleration step time, which should be longer than the previous acceleration step time and the shortest. (Example) In the case of Table 3-6 , if the motor acceleration step time of the previous step is 900μs, the next step should be the 14th acceleration step (921μs). Hereinafter, accelerate the speed sequentially up to the maximum motor drive pulse rate PM. in accordance with the acceleration step as show in Table 3-6 .

Number of Steps Drive pulse rate (pps) Step Time (μs) Number of Steps Drive pulse rate (pps) Step Time (μs) Start - 4654 33 1707 586 1 215 4654 34 1733 577 2 348 2876 35 1760 568 3 450 2221 36 1786 560 4 536 1865 37 1811 552 5 612 1635 38 1836 545 6 680 1471 39 1861 537 7 742 1348 40 1885 530 8 800 1251 41 1910 524 9 854 1171 42 1934 517 10 905 1105 43 1957 511 11 953 1049 44 1980 505 12 999 1001 45 2003 499 13 1044 958 46 2026 494 14 1086 921 47 2049 488 15 1127 887 48 2071 483 16 1167 857 49 2093 478 17 1205 830 50 2115 473 18 1242 805 51 2137 468 19 1278 782 52 2158 463 20 1313 761 53 2179 459 21 1348 742 54 2200 455 22 1381 724 55 2221 450 23 1414 707 56 2242 446 24 1446 692 57 2262 442 25 1477 677 58 2282 438 26 1508 663 59 2302 434 27 1538 650 60 2322 431 28 1567 638 61 2342 427 29 1596 627 62 2361 423 30 1624 616 63 2381 420 31 1652 605 64 2400 417 32 1680 595 - - -

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. There is no limit when temperature rise is 75°C Temperature rise of the motor is different according to the use conditions. (ambient temperature, design of the outer case etc.) Keep the temperature of the motor outer case, 100°C or lower. However, do not mount a heat sink or other parts on the motor. Verify the performance with your actual device. When the same control as the LTPZ245M is used, maximum continuous drive time and drive ratio vary. See Table 3-9, Table 3-10, and Table 3-11. Table 3-7 Maximum Continuous Drive Time and Drive Ratio Motor drive voltage V p(V) 9.5V≧Vp ＞8.5V 8.5V≧Vp ＞7.5V 7.5V≧Vp ＞6.5V 6.5V≧Vp ＞5.5V 5.5V≧Vp ＞4.75V 4.75V Drive Pulse Rate(pps) (or more to less than) Maximum Continuous Drive Time (sec) Drive Ratio 320 ～480 100 50% 50% 50% 50% 50% 60% 480 ～640 67 55% 55% 55% 55% 60% 70% 640 ～800 50 55% 55% 55% 55% 60% 75% 800 ～960 40 55% 55% 55% 55% 65% 80% 960 ～1120 33 55% 55% 55% 55% 65% 80% 1120 ～1280 29 55% 55% 55% 55% 65% 95% 1280 ～1440 25 55% 55% 55% 60% 70% 100% 1440 ～1600 22 55% 55% 60% 65% 75% - 1600 ～1760 20 60% 60% 60% 70% 85% - 1760 ～1920 18 60% 60% 60% 70% - - 1920 ～2080 17 60% 60% 65% 75% - - 2080 ～2240 15 60% 60% 65% - - - 2240 ～2400 14 60% 60% 65% - - - 2400 13 60% 60% 65% - - - -：Unusable Set the Drive Pulse Rate according to "3.3.5 Motor Drive Method".

Temperature Rise 50°C Motor Drive Voltage Vp (V) 9.5V≧Vp＞ 8.5V 8.5V≧Vp＞ 7.5V 7.5V≧Vp＞ 6.5V 6.5V≧Vp＞ 5.5V 5.5V≧Vp＞ 4.75V 4.75V Drive Pulse Rate (pps) min (m or longer) min (m or longer) min (m or longer) min (m or longer) min (m or longer) min (m or longer) 320 ～ 480 7.1 4.3 7.3 4.4 7.3 4.4 7.2 4.3 7.6 4.5 9.4 5.7 480 ～ 640 7.3 6.5 7.1 6.3 7.4 6.6 7.3 6.6 8.5 7.6 9.0 8.1 640 ～ 800 7.3 8.7 6.7 8.0 7.3 8.7 6.9 8.3 8.4 10.1 9.3 11.1 800 ～ 960 7.1 10.7 6.5 9.7 7.3 10.9 6.5 9.8 9.6 14.4 10.1 15.1 960 ～ 1120 6.9 12.4 6.2 11.2 7.1 12.8 7.1 12.8 11.2 20.1 20.9 37.5 1120 ～ 1280 6.9 14.5 6.7 14.1 7.3 15.4 7.3 15.3 12.9 27.1 32.9 69.1 1280 ～ 1440 6.8 16.2 7.3 17.6 7.5 18.0 7.6 18.1 8.9 21.2   1440 ～ 1600 6.7 18.1 7.2 19.3 7.5 20.1 7.8 21.0 9.2 24.9 - - 1600 ～ 1760 6.8 20.4 6.9 20.8 7.3 21.9 8.4 25.1 9.7 29.2 - - 1760 ～ 1920 6.5 21.6 7.3 24.0 7.8 25.7 12.1 39.9 - - - - 1920 ～ 2080 6.2 22.4 7.2 25.9 8.0 28.8 13.1 47.0 - - - - 2080 ～ 2240 6.6 25.5 7.3 28.3 8.7 34.0 - - - - - - 2240 ～ 2400 6.5 27.3 7.2 30.2 9.3 39.0 - - - - - - 2400 6.6 29.6 7.7 34.4 9.8 44.0 - - - - - - - : Unusable : No drive limitation Set the Drive Pulse Rate according to "3.3.5 Motor Drive Method". Table 3-9 Maximum Continuous Drive Time and Drive Ratio (When the Same Control as the LTPZ245M Is Used) Motor drive voltage Vp(V) 9.5V≧Vp ＞8.5V 8.5V≧Vp ＞7.5V 7.5V≧Vp ＞6.5V 6.5V≧Vp ＞5.5V 5.5V≧Vp ＞4.2V 4.2V Drive Pulse Rate(pps) (or more to less than) Maximum Continuous Drive Time (sec) Drive Ratio 320 ～400 50 60% 60% 60% 60% 65% 90% 400 ～480 40 60% 60% 65% 65% 65% 95% 480 ～560 33 60% 60% 65% 65% 70% 100% 560 ～640 29 60% 65% 65% 65% 70% - 640 ～720 25 60% 65% 65% 70% 75% - 720 ～800 22 60% 65% 65% 70% 80% - 800 ～880 20 60% 65% 65% 70% 85% - 880 ～960 18 60% 65% 65% 70% - - 960 ～1040 17 65% 65% 65% 75% - - 1040 ～1120 15 65% 70% 70% - - - 1120 ～1200 14 65% 70% 70% - - - 1200 13 65% 70% 70% - - - -：Unusable Set the Drive Pulse Rate according to "3.3.5 Motor Drive Method".

(When the Same Control as the LTPZ245M Is Used) Motor Drive Voltage Vp (V) 9.5V≧Vp＞ 8.5V 8.5V≧Vp＞ 7.5V 7.5V≧Vp＞ 6.5V 6.5V≧Vp＞ 5.5V 5.5V≧Vp＞ 4.2V 4.2V Drive Pulse Rate (pps) min (m or longer) min (m or longer) min (m or longer) min (m or longer) min (m or longer) min (m or longer) 320 ～ 400 6.0 7.2 5.5 6.5 5.6 6.7 5.3 6.3 6.4 7.7 21.0 25.2 400 ～ 480 5.8 8.7 5.7 8.5 5.7 8.6 5.9 8.9 6.4 9.6   480 ～ 560 5.2 9.4 5.7 10.2 5.9 10.6 6.0 10.9 7.0 12.6   560 ～ 640 5.2 11.0 5.8 12.1 6.0 12.6 7.0 14.8 7.5 15.6 - - 640 ～ 720 5.6 13.4 6.1 14.6 6.1 14.6 6.7 16.0 9.0 21.6 - - 720 ～ 800 5.4 14.6 5.8 15.8 6.2 16.7 7.3 19.8 11.2 30.2 - - 800 ～ 880 5.5 16.6 6.1 18.3 6.4 19.1 6.5 19.5 13.6 40.8 - - 880 ～ 960 5.7 18.9 5.6 18.5 6.5 21.4 8.2 27.0 - - - - 960 ～ 1040 5.8 20.7 6.2 22.4 7.2 25.7 8.5 30.6 - - - - 1040 ～ 1120 5.3 20.8 5.7 22.2 7.3 28.4 - - - - - - 1120 ～ 1200 5.4 22.8 5.9 24.7 7.4 31.2 - - - - - - 1200 5.4 24.2 6.4 28.8 7.8 35.0 - - - - - - - : Unusable : No drive limitation Set the Drive Pulse Rate according to "3.3.5 Motor Drive Method". Table 3-11 Maximum Drive Time (min) and Paper Feed Length (m) at Temperature Rise 75°C (When the Same Control as the LTPZ245M Is Used) Motor Drive Voltage Vp (V) 9.5V≧Vp＞ 8.5V 8.5V≧Vp＞ 7.5V 7.5V≧Vp＞ 6.5V 6.5V≧Vp＞ 5.5V 5.5V≧Vp＞ 4.2V 4.2V Drive Pulse Rate (pps) min (m or longer) min (m or longer) min (m or longer) min (m or longer) min (m or longer) min (m or longer) 320 ～ 400 27.1 32.5 27.2 32.7 29.8 35.8 25.8 30.9     400 ～ 480 41.6 62.5 43.6 65.4 39.5 59.2 38.6 57.9     480 ～ 560 24.6 44.2 61.9 111.3 56.4 101.6 44.9 80.9     560 ～ 640 24.5 51.5         - - 640 ～ 720 52.8 126.7         - - 720 ～ 800           - - 800 ～ 880           - - 880 ～ 960         - - - - 960 ～ 1040         - - - - 1040 ～ 1120       - - - - - - 1120 ～ 1200       - - - - - - 1200       - - - - - - - : Unusable : No drive limitation Set the Drive Pulse Rate according to "3.3.5 Motor Drive Method".

 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. During this time, drive the motor with constant speed at the 1st acceleration step.  When printing, change the motor drive pulse rate depending on the operational conditions such as voltage, temperature, and the number of activated dots. (See Chapter 5 "PRINT DRIVE METHOD" for details)  The lower motor drive frequency generates the higher heat. Therefore, drive the motor at high speed as much as possible when printing at a high print ratio for longer length.  Do not perform continuous printing to prevent the motor from overheating. Refer to Chapter 3 "Motor Drive Method" to set a pause time.  Surface of thermal paper may get scratched by backward feed. The backward feed may cause paper skew and jams depending on paper roll layout and designing of paper holder. Be sure to confirm performance with your product before using the backward feed.  Do not print intermittently (Do not repeat printing and stopping in a short interval.) If doing so, print quality may be decreased due to unevenness of the paper feed pitch.  Always perform the start and the stop steps for both character print and bit image print.  For the motor stop, a minimum one dot line of motor feed is required from the step that thermal head was activated. If the motor is stopped at the step that the thermal head has been activated, paper feed difficulty may be caused due to sticking of the thermal paper to the thermal head.  Sound and vibration during printing vary depending on the motor drive pulse rate. Verify the performance with your actual device.

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" after one line data is transferred. The heat elements are activated by making DST signal "High" in accordance with the stored print data. In this printer, a division printing by 6 blocks is available. Each block has 64 dots heat elements. 3.4.1 Structure of the Thermal Head Figure 3-7 shows the thermal head block diagram the printer. Table 3-12 show the relationship between DST and activated heat elements. D I C L K /L A T D S T 6 D S T 5 D S T 2 D S T 1 V d d G N D V p Shift Register LAT Register Output Driver Heating Element D O T 3 8 4 D O T 3 2 1 D O T 3 2 0 D O T 2 5 7 D O T 2 5 6 D O T 1 2 9 D O T 1 2 8 D O T 6 5 D O T 6 4 D O T 1 Block6 Block5 Blcok2 Block1 T H Thermistor T H Heat Element Out put Driver /LAT Register Shift Register Figure 3-7 Thermal Head Block Diagram

Block DST No. Heat Element No. Dots Number/ DST 1 DST1 1 to 64 64 2 DST2 65 to 128 64 3 DST3 129 to 192 64 4 DST4 193 to 256 64 5 DST5 257 to 320 64 6 DST6 321 to 384 64 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. Data in Paper feed direction Paper Print surface Data 1 2 3 4 5 6 ･････ 382 383 384 Printer mechanism Data input sequence 1 2 3 4 5 6 ･･･････････････ 382 383 384 Thermal paper Paper feed direction Data in Print surface Printer mechanism Data input sequence Data Figure 3-8 Transfer Data and Print Position

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) Vdd: 3.0 V to 3.6 V (Temperature : 25 C) Rated value Item Symbol Conditions Min. Typ. Max. Unit Thermal head heat element resistance RH 162.0 180.0 198.0 Ω Thermal Head drive voltage Vp 4.2 - 9.5 V Thermal Head drive current Ip at the number of simultaneously activated dots = 64 - - 3.76 A Logic voltage Vdd 3.0 3.3 3.6 V Logic current Idd fDI = 1/2fCLK - - 15.0 mA High VIH CLK, DI, /LAT, DST 0.8×Vdd - Vdd V Input voltage Low VIL CLK, DI, /LAT, DST 0 - 0.2×Vdd V High IIH DI VIH = Vdd - - 0.5 μA DI input current Low IIL DI VIL = 0 V - - -0.5 μA High IIH DST VIH = Vdd - - 35.0 μA DST input current (High active) Low IIL DST VIL =0 V - - -5.0 μA High IIH CLK VIH = Vdd - - 1.0 μA CLK input current Low IIL CLK VIL = 0 V - - -1.0 μA High IIH /LAT VIH = Vdd - - 1.0 μA /LAT input current Low IIL /LAT VIL = 0 V - - -1.0 μA CLK frequency fCLK - - 8.0 MHz CLK pulse width t1*1 47.5 - - ns DI setup-time t2*1 40 - - ns DI hold time t3*1 40 - - ns /LAT setup time t4*1 120 - - ns /LAT pulse width t5*1 120 - - ns /LAT hold time t6*1 70 - - ns DST setup time t7*1 300 - - ns /LAT wait time t8*1 8 - - μs *1: See the Timing Chart.

Vdd: 4.75 V to 5.25 V (Temperature : 25 C) Rated value Item Symbol Conditions Min. Typ. Max. Unit Thermal head heat element resistance RH 162.0 180.0 198.0 Ω Thermal Head drive voltage Vp 4.2 - 9.5 V Thermal Head drive current Ip at the number of simultaneously activated dots = 64 - - 3.76 A Logic voltage Vdd 4.75 5.00 5.25 V Logic current Idd fDI = 1/2fCLK - - 30.0 mA High VIH CLK, DI, /LAT, DST 0.8×Vdd - Vdd V Input voltage Low VIL CLK, DI, /LAT, DST 0 - 0.2×Vdd V High IIH DI VIH = Vdd - - 0.5 μA DI input current Low IIL DI VIL = 0 V - - -0.5 μA High IIH DST VIH= Vdd - - 60.0 μA DST input current (High active) Low IIL DST VIL = 0 V - - -8.0 μA High IIH CLK VIH = Vdd - - 1.0 μA CLK input current Low IIL CLK VIL = 0 V - - -1.0 μA High IIH /LAT VIH = Vdd - - 1.0 μA /LAT input current Low IIL /LAT VIL = 0 V - - -1.0 μA CLK frequency fCLK - - 8.0 MHz CLK pulse width t1*1 37.5 - - ns DI setup-time t2*1 30 - - ns DI hold time t3*1 30 - - ns /LAT setup time t4*1 100 - - ns /LAT pulse width t5*1 100 - - ns /LAT hold time t6*1 50 - - ns DST setup time t7*1 300 - - ns /LAT wait time t8*1 8 - - μs *1: See the Timing Chart.

Figure 3-9 shows a thermal head drive timing chart. CLK DI /LAT DST t6 8 t 5 t 4 t t7 1/fCLK t1 t2 t3 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 to 198.0 Ω 3.4.6 Maximum Current Consumption Since the maximum current consumption may reach the values calculated using equation (2) when the thermal head is driven, the number of simultaneously activated dots should be determined not to exceed power supply capacity. Also, allowable current for the cable material and the voltage drop on the cable should be cared well. Equation (2): min H SA P R Vp N = I  IP : Maximum current consumption (A) NSA : Number of simultaneously activated dots Vp : Thermal head drive voltage (V) RH min : Minimum thermal head heat element resistance 162.0 (Ω)

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. This product is possible to be driven by the same control specified for LTPZ245M. 3.5.1 Calculation of Activation Pulse Width Each value can be calculated according to the steps in Section 3.5.2 to 3.5.6 and the activation pulse width "t" can be calculated by substituting each value into the equation (3). Equation (3): C V R E t 2    t : Thermal head activation pulse width (ms) E : Printing energy (mJ) See Section 3.5.2 R : Adjusted resistance (Ω) See Section 3.5.3 V : Adjusted voltage (V) See Section 3.5.4 C : Thermal head activation pulse cycle coefficient See Section 3.5.6

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):   25 X T C T 25 E E － －   E : Printing energy E25 : Standard printing energy See Table 3-16. TC : Temperature coefficient See Table 3-16. TX : Temperature detected by thermistor (°C) * *: Measure the temperature using the resistance of the built-in thermistor on the thermal head. For the thermistor resistance value at TX (°C), see Section 3.5.8 Temperature Characteristics of the Thermistor. Table 3-16 Standard Printing Energy and Temperature Coefficient Specified thermal paper Standard printing energy (mJ) Temperature coefficient (TC) Nippon Paper TF50KS-E2D 0.2853 0.002803 PD150R 0.3558 0.002432 Oji Paper Co., Ltd. PD160R-N 0.3238 0.002245 Mitsubishi Paper mills limited F220VP 0.3374 0.002683 TX≧25℃ 0.3061 0.003542 AF50KS-E TX≦25℃ 0.3061 0.002260 Jujo Thermal AP50KS-FZ 0.3237 0.003306 Mitsubishi Hi-Tech Paper F5041 0.3376 0.002703 TX≧25℃ 0.3503 0.004436 Papierfabrik August Koehler AG KT55F20 TX≦25℃ 0.3503 0.001339 KSP P300 0.3254 0.003478 3.5.3 Adjustment of Thermal Head Resistance The adjusted resistance "R" can be calculated using equation (5) to adjust the thermal head resistance as a voltage drop is caused by wiring resistance. Equation (5): H 2 SA c C i H R ) N × ) r + R ( + R + R ( = R RH : Thermal head heat element resistance 180.0 (Ω) Ri : Wiring resistance in the thermal head 9.0 (Ω) *1 RC : Common terminal wiring resistance in the thermal head 0.279 (Ω) rC : Wiring resistance between Vp and GND (Ω) *2 NSA : The number of simultaneously activated dots *1 : The value at Vdd =3.3V. When the value at Vdd =5.0V, Ri becomes 6Ω. *2 : The resistance is a serial resistance of the wire and switching circuit of relay between control terminal and power supply.

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) Vp : 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 preceding activation to the start of the current activation) which meets equation (8) to secure the pause time. Equation (8):   μs 500 + t W  W : The activation cycle (μs) *1 *1: The activation cycle W is the driving time of the printer drive motor for 2 steps (one-half dot line).

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): 4800 + (W'+1580) × 3.15) - (Vp 68 - Vp × 1450 - 1 = C W’ : A time between the beginning of the last thermal head activation and thebeginning of present thermal head activation (μs) Figure 3-10 shows how to calculate the thermal head activation cycle " W’ " as an example. To calculate the activation pulse width "t1" for 2nd half dot line (at 3rd step and 4th step), " W'1" shown in the figure below should be set as " W' ". To calculate the activation pulse width "t2" for 5th half dot line (at 9th step and 10th step), " W'2" shown in the figure below should be set as "W' ". Figure 3-10 Time from the start of the preceding thermal head activation to the start of the current thermal head activation (W') 1st step 2nd step 3rd step 4th step 5th step 6th step 7th step 8th step 9th step 10th step 1st half dot line 2nd half dot line 3rd half dot line 4th half dot line 5th half dot line DST Motor step 1st dot line 2nd dot line 3rd dot line 11th step 12th step 6th half dot line DST W'1 W'2 t1 t2

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) Vp （V） TX （℃） 480 720 960 1200 1440 1680 1920 2160 2400 0 2.838 2.329 1.995 1.758 - - - - - 10 2.614 2.145 1.837 1.620 - - - - - 20 2.390 1.961 1.680 1.481 - - - - - 30 2.166 1.778 1.523 1.342 - - - - - 40 1.943 1.594 1.365 1.204 - - - - - 50 1.719 1.410 1.208 1.065 - - - - - 60 1.495 1.227 1.051 0.926 - - - - - 4.75 70 1.271 1.043 0.893 0.788 - - - - - 0 1.971 1.646 1.424 1.263 1.140 - - - - 10 1.816 1.516 1.311 1.163 1.050 - - - - 20 1.660 1.386 1.199 1.063 0.960 - - - - 30 1.505 1.256 1.087 0.964 0.870 - - - - 40 1.349 1.127 0.975 0.864 0.780 - - - - 50 1.194 0.997 0.862 0.765 0.691 - - - - 60 1.038 0.867 0.750 0.665 0.601 - - - - 5.5 70 0.883 0.737 0.638 0.565 0.511 - - - - 0 1.398 1.184 1.034 0.922 0.836 0.768 0.712 - - 10 1.288 1.091 0.952 0.850 0.770 0.707 0.656 - - 20 1.177 0.998 0.871 0.777 0.704 0.647 0.600 - - 30 1.067 0.904 0.789 0.704 0.638 0.586 0.543 - - 40 0.957 0.811 0.708 0.631 0.572 0.525 0.487 - - 50 0.847 0.717 0.626 0.559 0.506 0.465 0.431 - - 60 0.736 0.624 0.545 0.486 0.440 0.404 0.375 - - 6.5 70 0.626 0.531 0.463 0.413 0.375 0.344 0.319 - - 0 1.033 0.884 0.776 0.695 0.632 0.582 0.540 0.505 0.476 10 0.952 0.814 0.715 0.641 0.582 0.536 0.497 0.465 0.438 20 0.870 0.744 0.654 0.586 0.533 0.490 0.455 0.426 0.401 30 0.789 0.675 0.593 0.531 0.483 0.444 0.412 0.386 0.363 40 0.707 0.605 0.531 0.476 0.433 0.398 0.370 0.346 0.326 50 0.626 0.535 0.470 0.421 0.383 0.352 0.327 0.306 0.288 60 0.544 0.466 0.409 0.366 0.333 0.306 0.284 0.266 0.251 7.5 70 0.463 0.396 0.348 0.311 0.283 0.260 0.242 0.226 0.213 0 0.792 0.682 0.601 0.540 0.492 0.454 0.422 0.395 0.372 10 0.729 0.628 0.554 0.498 0.454 0.418 0.388 0.364 0.343 20 0.667 0.574 0.507 0.455 0.415 0.382 0.355 0.333 0.313 30 0.605 0.520 0.459 0.413 0.376 0.346 0.322 0.302 0.284 40 0.542 0.467 0.412 0.370 0.337 0.311 0.289 0.270 0.255 50 0.480 0.413 0.364 0.327 0.298 0.275 0.255 0.239 0.225 60 0.417 0.359 0.317 0.285 0.259 0.239 0.222 0.208 0.196 8.5 70 0.355 0.305 0.269 0.242 0.221 0.203 0.189 0.177 0.167 0 0.625 0.541 0.479 0.431 0.393 0.363 0.338 0.316 0.298 10 0.576 0.498 0.441 0.397 0.362 0.334 0.311 0.291 0.275 20 0.526 0.455 0.403 0.363 0.331 0.306 0.284 0.267 0.251 30 0.477 0.413 0.365 0.329 0.300 0.277 0.258 0.242 0.228 40 0.428 0.370 0.328 0.295 0.269 0.248 0.231 0.217 0.204 50 0.379 0.327 0.290 0.261 0.238 0.220 0.205 0.192 0.181 60 0.329 0.285 0.252 0.227 0.207 0.191 0.178 0.167 0.157 9.5 70 0.280 0.242 0.214 0.193 0.176 0.163 0.151 0.142 0.134 - : Unusable *: The table above is applicable under the following condition: ・Use of thermal paper "TF50KS-E2D" ・Vp and GND wiring resistance rc = 0 ・The number of simultaneously activated dots : NSA =64

Calculate the resistance of the thermistor (RX) at the operating temperature TX (C) using the following equation (9). Variation of resistance by temperature is shown in Figure 3-11 and Table 3-18. Equation (9): { ( ) } 298 1 - T + 273 1 × B EXP × R = R X 25 X RX : Resistance at TX C (Ω) R25 : Resistance at 25C 30  5%(kΩ) B : B value 3950K  2% TX : Temperature detected by thermistor (C) EXP (A) : The "A" th power of natural logarithm e (2.71828) 1 10 100 1000 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Temperature (℃) Resistance (kΩ) Figure 3-11 Temperature Characteristics of the Thermistor Temperature (C) Resistance (kΩ)

Temperature (C) Thermistor Resistance (kΩ) -20 316.97 -15 234.22 -10 175.07 -5 132.29 0 100.99 5 77.85 10 60.57 15 47.53 20 37.61 25 30.00 30 24.11 35 19.51 40 15.89 45 13.03 50 10.75 55 8.92 60 7.45 65 6.25 70 5.27 75 4.47 80 3.80 85 3.25 90 2.79 95 2.41 100 2.09

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 RTH≦5.27 kΩ), and reactivate the heat elements when a temperature lower than 60°C (RTH≧7.45 kΩ) is detected. If the thermal head continues to be activated at a temperature higher than 70°C, the life of the thermal head may be shortened significantly. (2) Detecting abnormal temperatures by hardware If the thermal head continues to be activated by malfunction of the control unit (CPU), the software for detecting abnormal temperatures may not function properly, resulting in overheating of the thermal head. Overheating of the thermal head not only may damage the thermal head but also may cause smoke, fire and burn injuries. Always use hardware together with software for detecting abnormal temperatures to ensure personal safety. (If the control unit malfunctions, it may be impossible to prevent damage on the thermal head even if an abnormal temperature is detected by hardware.). Using a window comparator circuit or similar sensor, design hardware that detects the following abnormal conditions: (a) Overheating of the thermal head (approximately 100 °C or higher (RTH≦2.09 k) ) (b) Faulty thermistor connection (the thermistor may be open or short-circuited). If (a) or (b) is detected, immediately deactivate the heat elements. Reactivate the heat elements after they have returned to normal.

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. If the platen unit is released and no paper are detected, the external circuit should not activate the thermal head. Otherwise, the thermal head may become damaged or its life may be shortened significantly. Activate the thermal head when the platen is set by detecting the output from the platen position sensor, and in the paper state by detecting the output from the out-of-paper sensor. 3.6.1 General Specifications Table 3-19 shows about the general specification. Table 3-19 General Specifications of Platen Position Sensor Item Specifications Rated voltage 5.0 VDC Rated current 1 mA Contact resistance 3 Ω max. Figure 3-12 shows sample external circuit of the platen position sensor. Platen position sensor GND CPU Port Vdd HS GND 0.1μF *: The HS signal is “High” when the platen is in open state. LTP01-245-12 74HC14 47kΩ 300Ω Figure 3-12 Sample External Circuit of the Platen Position Sensor 3.6.2 Precautions for the Platen Position Sensor  Be sure that there is a time lag between the time when the thermal head is set and the time when the platen position sensor actually starts detecting.  Always use the capacitor shown in Figure 3-12 to prevent the switch from malfunctioning due to chattering.  The platen position sensor may generate instantaneous abnormal signal. Design the firmware in order to prevent malfunction due to the abnormal signal. (Recommended frequency: detecting twice every 10 ms）

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. If the motor is driven when there is no paper, a load is put on the paper drive system and the life of the printer may be shortened significantly. 3.7.1 General Specifications Table 3-20 shows about the out-of-paper sensor used for this printer. Table 3-20 Out-of-Paper Sensor Item Specifications Model GP2S60B Manufacturer Sharp Corporation Figure 3-13 shows sample external circuit of the out-of-paper sensor. Vdd 470pF Out-of-paper sensor 47kΩ±1% 220Ω±1% LTP01-245 PS ps V Gps GND CPU Port 74HC14 Figure 3-13 Sample External Circuit of the Out-of-Paper Sensor 3.7.2 Precautions for the Out-of-Paper Sensor  The out-of-paper sensor may generate instantaneous abnormal signal. Design the firmware in order to prevent malfunction due to the abnormal signal. (Recommended frequency: detecting twice every 10 ms）

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 Terminals Recommended Connectors 30 FCI INC: SFW30R-2STE1LF (right angle, top contact) SFW30S-2STE1LF (vertical) SLW30S-1C7LF (vertical) MOLEX INC: 0522073060 (right angle, top contact) 0520893019 (right angle, top contact) 0526103072 (vertical) 0520303029 (vertical) 4.2 CONNECTING TERMINALS Figure 4-1 shows the terminal configuration of the connecting terminals and Table 4-2 shows terminal assignments of the connecting terminals. 1 30 Figure 4-1 Connecting Terminals 4-1

Function Terminal Number Terminal Name LTP01-245-11/18 LTP01-245-12 1 Gps GND of the out-of-paper sensor (LED cathode) 2 Vps Power supply of the out-of-paper sensor (LED anode, Photo-transistor collector) 3 PS Output of the out-of-paper sensor (photo-transistor emitter) 4 GND No connection Platen position sensor GND 5 HS No connection Platen position sensor output 6 Vp Thermal head drive power supply 7 Vp Thermal head drive power supply 8 DI Print data input (serial input) 9 CLK Synchronizing for print data transfer 10 GND GND 11 GND GND 12 DST6 Thermal head print activation instruction (#6 block) 13 DST5 Thermal head print activation instruction (#5 block) 14 DST4 Thermal head print activation instruction (#4 block) 15 Vdd Logic power supply 16 TH 17 TH Thermistor (the one is used for GND) 18 DST3 Thermal head print activation instruction (#3 block) 19 DST2 Thermal head print activation instruction (#2 block) 20 DST1 Thermal head print activation instruction (#1 block) 21 GND GND 22 GND GND 23 /LAT Print data latch (memory storage) 24 NC No connection 25 Vp Thermal head drive power supply 26 Vp Thermal head drive power supply 27 A Motor drive 28 /A Motor drive 29 B Motor drive 30 /B Motor drive

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. The motor feeds the thermal paper for one dot line with four steps. In order to print one dot line, feed the thermal paper for four steps and activate the thermal head once in every two steps. Figure 5-1 shows a timing chart for driving using six division printing and one division printing. First dot line indicates six division printing and second dot line indicates one division printing on the below timing chart. (The number of simultaneously activated dots should not exceed 64dots.) PH1 PH2 PH3 PH4 CLK DI /LAT DST1 DST2 DST3 DST4 DST5 DST6 2nd dot-line 1st dot-line 1st half dot-line Start Pause 1st step 2st step 2st half dot-line 3st step 4st step 1st half dot-line 1st step 2st step 2st half dot-line 3st step 4st step Figure 5-1 Timing Chart for Division Printing

(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. Activate the thermal head once in every two steps of the motor drive signal. Configure 1 dot line with 4 steps of the motor drive signal. At the 1st step of the motor drive signal, start activation of the thermal head by synchronizing DST with the motor, and print the 1st half dot line at the 1st dot line by using DST. After the 1st step of the motor drive signal is completed, input its 2nd step. (It is not necessary to synchronize the activation of the thermal head.) After printing the 1st half dot line at the 1st dot line, start activation of the thermal head at the 2nd step of the motor drive signal by synchronizing DST1 with the motor, and print the 2nd half dot line at the 1st dot line by using DST1 to DST6. After the 3rd step of the motor drive signal is completed, input its 4th step. (It is not necessary to synchronize the activation of the thermal head.) Input the DST signal previously, transfer the data which is printed into the "SHIFT REGISTER" in the thermal head. And latch to "LATCH REGISTER" of the thermal head by inputting the /LAT signal. (4) Procedures that follows the 2nd dot line Drive the motor in the same way as the way for the 1st dot line. Repeat the motor driving and thermal head activation.

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. To drive the thermal head, physical blocks are activated in groups. The group of physical blocks is called a logical block. The following two methods are available as thermal head division drive methods. Select one you desire. (1) Fixed division method Logical blocks (physical blocks to be driven at the same time) are predetermined for the fixed division method. In this method, high quality printing is available because the physical blocks are always driven in the same order. (2) Dynamic division method Logical blocks are predetermined so that number of dots of the physical block does not exceed the specified maximum number of the activating dots for every 1 dot line printing. Logical blocks are predetermined for every 1 dot line printing. The maximum current consumption can be controlled within a constant value. Since the order of the printing block and print speed are changed in each dot line according to the content of the print data, print quality in this method may be lower than that in fixed division method. If print quality is regarded as important, printing in fixed division method is recommended. 5.3 PRECAUTIONS FOR PRINT DRIVE  The activation time of the thermal head can be longer than the motor step time depending on the type of the thermal paper, content of the printing and use condition. In that case, hold the motor step until printing is completed.  When activating the all the blocks at once, a pause time between thermal head activations of the same heat element shall be secured more than 0.5ms.  The number of the maximum thermal head division in a half dot line should be 6 or lower to maintain print quality. The number of the simultaneously activated dots should be 64 dots or less.

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. The height of the bosses on the outer case must be 0.7±0.1mm.  Secure the printer main body using screws at the holes A and B.  Design a hook for the concave C. 2.3 +0.15 0 0.7 2.3 +0.1 -0.2 2 0 -0.1 O 10.3 20.5 59.15 62.2 50.5 57.95 2.4 8.9 C Fixing hook 4.7 A B C Fixing hook Positioning boss #1 #2 C Unit : mm General tolerance for dimensions : ±0.1 Figure 6-1 Dimensions for Positioning and Securing the Printer Main Body 6-1

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.  The printer main body to be mounted on a flat surface and prevent from vibration.  To prevent the thermal head from being damaged by static electricity, connect the hole A and B shown in Figure 6-1 to the Frame Ground (FG).  Connect the signal ground (GND) to frame ground (FG) using a 1MΩ resistor so that the electric potential of the signal ground (GND) of the thermal head and that of the frame ground (FG) of the printer are equal.  Pay attention not to damage the FPC when securing the printer main body with the screw.  Metal parts may become discolored and rusted due to the operational environment. Consider these factors regarding appearance. 6-2

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 gear platen holder platen dia A A Section A-A Center of platen at fixed 3.7 4.2 22° ±1 0.4 1.2 6.8 +0.5 0 2.8 0 -0.2 3.5 +0.1 0 2.9 R 0.5 R 0.5 R 0.5 R 0.5 R 1.75 R 1 R 1 Paper guide R 0.5 R 0.5 2 1 1.5 Unit : mm General tolerance for dimensions : ±0.1 Figure 6-2 Dimensions for Positioning and Securing the Platen Unit 6-3

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. 25.45 ±0.3 4.2 11° ±0.5 50～100 X±0.3 Positioning hole #1 Rotation center for platen holder 10.7 ±0.3 Unit : mm General tolerance for dimensions : ±0.1 Figure 6-3 Dimensions for Positioning and Securing the Platen Unit 6-4

 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. (Refer to the hatched area : slope and R0.5). It is also recommended that the rotation system of the platen holder be designed on the same base which the printer main body is mounted  Design the rotation system of the platen holder so that the center of the rotation is in the position as shown in Figure 6-3, 11 degrees (±0.5 degrees) to horizontal to the center of the platen and 50 mm to 150 mm away from the center of the platen.  If the mounting position for the rotation center of the platen holder is inadequate position, so the printer main body and the platen unit are not in engagement position, the print defect may occur.  Parallelism between the positioning holes #1-#2 and the center of platen holder rotation should be 0.2 or less.  Design the platen holder with special care to its intensity so that it can withstand the force caused by opening/closing the printer main body and the platen unit.  Do not use materials such as metal material for the platen holder. If using, the platen unit cannot be set into the platen holder . Verify the performance with your actual device.  A door on the outer case that holds the platen unit must be set by pushing the center of the platen unit. If only one end of the platen unit is set, a print defect, and/or a paper jam will occur. Verify the performance with your actual device. In order to be pushed the center of the platen unit to set it, put an indication to do so.  Pressure or stress for direction where the platen unit is released should be applied only when the platen unit is actually released. Permanent pressure or stress for releasing the platen unit may cause slipping gears, negative influence on printing quality, and printing troubles during operation. 6-5

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. If the paper guide cannot be set up, design paper insertion angle constantly to be 22 degrees or more as shown on the Figure 6-2. 90° 60° Paper outlet angle 22° Paper Paper eject angle Thermal paper Unit : mm Figure 6-4 Recommended Layout between the Printer Mechanism and the Thermal Paper 6-6

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.  Design the paper holder so that the paper feed load should be 0.49N (50gf) or less. Be aware that the printing problem and paper feed problem may occur in the following case even if it is below 0.49N. Design the paper holder so as not to make these conditions and verify the performance with your actual device. ex) In case that the paper roll wobbles in the paper holder. In case that tension of the thermal paper between the paper roll and the printer changes rapidly. In addition, do not use following types of the paper roll: ･ Expanded paper roll ･ Deformed paper roll ･ Roll core is sticking out. ･ Width of the paper roll is out of spec 4 +0.1 0 Fixing hook Mounting position guide boss Mounting surface Fixing hook 59 +0.2 0 Thermal paper guide position Wall for the thermal paper guide Hole for set screw(M2) Mounting position guide boss Wall for the thermal paper guide 10.3 Unit : mm General tolerance for dimensions : ±0.1 Figure 6-5 Recommended Paper Holder Dimensions 6-7

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.  Design the paper outlet of the outer case and the platen holder so that the thermal paper eject angle must be within of 60° to 90° as shown in Figure 6-4. However design the paper eject of outer case so that thermal paper can be ejected without changing its eject direction. Do not change the paper eject direction around the paper eject of printer mechanism. If changing the paper eject direction, verify the performance with your actual device.  If using a paper winder to wind the thermal paper, allow the paper to eject naturally for at least 4mm in length from the center of the platen. Design the outer case referring to Figure 6-6. Verify the performance with your actual device. Otherwise, printing defects may occur or also the motor may step out of the position. 9.5 ±0.1 3.7 ±0.1 4 MIN. 14.7 MIN. Unit : mm General tolerance for dimensions : ±0.1 Figure 6-6 Paper Path 6-8

 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.  Design the blade edge of the cutter as shown in the right figure of so that the blade edge can guide the thermal paper edge after cutting. If designing the blade edge as shown in the left figure of Figure 6-7, the paper edge may be caught by the blade edge, and result in the thermal paper edge to be caught inside. of the cutter. . Figure 6-7 Blade Edge 6-9

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.  Be careful not to touch the platen and also prevent any objects from getting caught in the paper winder.

Figure 7-3 and Figure 7-3 show the external dimensions of LTP01-245-11, LTP01-245-12, and LTP01-245-18 respectively. 58.1 3.4 Φ 8 Φ 3.4 Φ 65.8 4.2 Φ 7.6 Φ Unit : mm General tolerance : ±0.5 Figure 7-1 External Dimensions of the Platen Unit 7-1

5.55 21.4 4.2 5.8 10.7 15.3 62.6 ±3 9.95 ±2 31 3.95 3.35 56.45 R 2.7 2.1 +0.05 0 O 3 O 2.1 +0.05 0 8.9 ±0.05 O 2 +0.05 0 O 2.3 O 2.5 ±0.1 2.1 ±0.1 3.65 ±0.2 22° (Paper Inlet Angle) 10 3.285 (Paper Inlet Position) 85° (Paper Eject Angle) O 8 Unit : mm General tolerance : ±0.5 Figure 7-2 External Dimensions of the Printer (LTP01-245-11/18) 7-2

5.55 21.4 4.2 5.8 10.7 15.3 62.6 ±3 9.95 ±2 31 3.95 3.35 56.45 R 2.7 2.1 +0.05 0 O 3 O 2.1 +0.05 0 8.9 ±0.05 O 2 +0.05 0 O 2.3 O 2.5 ±0.1 2.1 ±0.1 3.65 ±0.2 22° (Paper Inlet Angle) 10 85° (Paper Eject Angle) O 8 3.285 (Paper Inlet Position) Unit : mm General tolerance : ±0.5 Figure 7-3 External Dimensions of the Printer (LTP01-245-12) 7-3

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.  Set the thermal paper straight to the printer and set the thermal paper until its edge is ejected for 5 cm and more from the top surface of the printer mechanism. (b) Uninstall the thermal paper  Uninstall the thermal paper in the same manner for installing the thermal paper. (c) Clearing a paper jam  Uninstall the thermal the paper in the same manner for installing the thermal paper. (2) Procedures for installing the thermal paper by auto-loading function (automatic insertion when the platen block is in set status) (a) Procedures for Installing the Thermal Paper  Well-cut the thermal paper edge with scissors and cutter knife. Cutting the thermal paper edge perpendicular to paper feed direction, shown in Figure 8-1. Figure 8-1 Shape of the Thermal Paper Edge 8-1

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.  Feed paper until all thermal paper is ejected. (c) Procedures for Removing the Paper Jam  Remove the thermal paper by following the procedures for uninstalling the thermal paper.  When the thermal paper cannot be removed by the above method, release the platen block, and remove the thermal paper. 8.1.2 Precautions for Installing/Uninstalling the Thermal Paper  Set the thermal paper straight to the printer and set the thermal paper until its edge is ejected for 5 cm and more from the top surface of the printer mechanism.  When setting the platen unit, the reduction gear may interfere with the platen gear and may cause the platen unit to not be set. In such a case, release the platen unit and set it again.  If the thermal paper is skewed, feed the thermal paper until the thermal paper becomes straight or install the thermal paper again.  Remove the jamming paper with the platen unit released. Do not pull the thermal paper by force because severe damages may occur.  If the thermal head is remained in contact with the platen without the thermal paper for a long time, the platen and the thermal head may be stuck together and cause the auto-loading difficulty. If facing this problem, release the platen block and set it back again before starting printing. 8.2 CLEANING THE THERMAL HEAD If the surface of the thermal head exposed to dirt, ensure to clean the thermal head to avoid a print defect. 8.2.1 Procedures for Cleaning the Thermal Head  Turn off the power before cleaning.  Clean the thermal head with the platen unit released.  Clean the heat element using a cotton swab dipped in ethyl alcohol or isopropyl alcohol.  Set the platen unit after the alcohol has dried completely. 8-2

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.  Clean the thermal head with the platen unit released.  Do not use sandpaper, a cutter knife, or anything which may damage the heat element for cleaning. 8-3