LTP F SERIES LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCE U00060419201 Seiko Instruments Inc.
LTP F SERIES LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCE Document Number U00060419201 First Edition Second Edition August 2001 February 2002 Copyright © 2001, 2002 by Seiko Instruments Inc. All rights reserved. Seiko Instruments Inc. (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.
PREFACE This reference manual describes the specifications and basic operating procedures for the LTP F Series Thermal Printer Mechanism (hereinafter referred to as “printer”). The LTP F series has the following two types of printers that are classified by their paper width. LTPF247A-C432 LTPF347A-C576 This manual usually describes information common to any printer, and each information with the name if information is different. Chapter 1 “Precautions” describes safety, design and operational precautions.
iv
TABLE OF CONTENTS Section Page CHAPTER 1 PRECAUTIONS 1.1 1.2 SAFETY PRECAUTIONS ..................................................................................................... 1-1 DESIGN AND HANDLING PRECAUTIONS ......................................................................... 1-2 1.2.1 Design Precautions .................................................................................................. 1-2 1.2.2 Handling Precautions ..........................................................
Section 3.7 3.8 Page PAPER DETECTOR ........................................................................................................... 3-29 3.7.1 General Specifications ........................................................................................... 3-29 3.7.2 Sample External Circuit.......................................................................................... 3-30 PLATEN POSITION DETECTOR ......................................................................................
Section Page CHAPTER 9 PERIPHERALS 9.1 AUTOCUTTER UNIT ............................................................................................................ 9-1 9.1.1 Installation Method ................................................................................................... 9-2 9.1.2 Clearing a Paper Jam in the Autocutter ................................................................... 9-4 9.1.3 Consideration for Outer Case Design ....................................................
FIGURES Figure Page 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3-12 3-13 3-14 3-15 3-16 Heat Element Dimensions (LTPF247) .................................................................................. 3-3 Print Area (LTPF247) ............................................................................................................ 3-3 Heat Element Dimensions (LTPF347) .................................................................................. 3-4 Print Area (LTPF347) .....................
TABLES Table Page 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3-12 3-13 3-14 General Specifications .......................................................................................................... 3-1 General Motor Specifications ................................................................................................ 3-6 Excitation Sequence.............................................................................................................. 3-8 Acceleration Steps..............
x
CHAPTER 1 PRECAUTIONS Read through this manual to design and operate the printer properly. Pay special attention to the precautions noted in each section. 1.1 SAFETY PRECAUTIONS Follow these precautions when designing a product using the printer, and include any necessary precautions and warning labels to ensure the safe operation of your product by users.
1.2 DESIGN AND HANDLING PRECAUTIONS To maintain the initial level of performance of the printer and to prevent future problems from occurring, observe the following precautions. 1.2.1 Design Precautions Design precautions z 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. z The current capacity of the thermal head is 13.6A. Design the circuit so that the average current does not exceed this value.
z Always close the platen and feed the paper at 16 dots or more per line when printing is in a standby state. The elastic deformation of the platen roller rubber will be retreated. Mechanism precautions z Apply power in the following manner: When turning the power ON: 1) Vdd (5 V) At shut down: 1) Vp (24 V) → → 2) Vp (24 V) 2) Vdd (5 V) z Cut surfaces of metallic parts may become discolored and rusted due to the operational environment. Consider these factors regarding appearance.
Printing and paper feeding precautions z Make sure that variation in the motor drive frequency does not lead to noise or a loss of paper feed force before making designs. z Design the outer case to prevent the paper feed out from being caught in the platen. z When or after printing or paper feed has been suspended, if data is input or printing restarts, paper feed may not be performed properly for several dot lines just after printing starts.
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. z To prevent the heat elements, ICs, etc. from static electricity, discharge all static electricity before handling the printer. Pay special attention to the thermal head control terminals when handling.
1.2.3 Precautions on Discarding When discarding used printers, discard them according to the disposal regulations and rules of each respective district.
CHAPTER 2 FEATURES The LTP F Series Line Thermal Printer Mechanism is a compact, super high-speed thermal line dot printing mechanism. It can be used with a measuring instrument and analyzer, a POS, a communication device, or a data terminal device. The LTP F Series has the following features: z Super high speed printing ∗1 A maximum print speed of 1760 dot lines per second (220 mm per second) is attainable for the LTP F series printer mechanism.
2-2
CHAPTER 3 SPECIFICATIONS 3.1 GENERAL SPECIFICATIONS Table 3-1 General Specifications Item Print method Dots per line Printable dots per line Simultaneously activatable dots per line Resolution Maximum print speed ∗1 Print width Paper width Paper feed pitch Head temperature detection Platen position detection Out-of-paper detection Operating voltage range Vp line Vdd line ∗3 Current Print ratio consumption used 100% in driving the head 50% (Vp) ∗2 25% 12.
Table 3-1 General Specifications (Continued) Item Life span (at 25°C and rated energy) Activation pulse resistance Abrasion resistance Paper feed force Paper hold force Dimensions (excluding the lever and convex part) (width × depth × height) Mass Specified thermal paper ∗4 Specification LTPF247 LTPF347 100 million pulses or more ∗4 100 km or more (excluding damage caused by dust and foreign materials) 0.98N (100 gf) or more 0.98N (100 gf) or more 86.2 × 54 × 25.8 mm 110.2 × 54 × 25.8 mm Approx.
3.2 3.2.1 HEAT ELEMENT DIMENSIONS Heat Element Dimensions for the LTPF247 The LTPF247 contains a thermal head with 448 heat elements (dot-size). The 432 dots (54 mm to the paper width 58 mm) is a printable area due to a relation with the paper width. When transmitting print data, enter (NUL) data for data strings equivalent to 8 dots each on the right and left sides. 448 Dots (56mm) 8 Dots 432 Dots (54mm) 8 Dots 0.
3.2.2 Heat Element Dimensions for the LTPF347 The LTPF347 contains a thermal head with 640 heat elements (dot-size). The 576 dots (72 mm to the paper width 80 mm) is a printable area due to a relation with the paper width. When transmitting print data, enter (NUL) data for the data string equivalent to 32 dots each in right and left sides. 640 Dots (80mm) 32 Dots 576 Dots (72mm) 32 Dots 0.
3.3 PAPER FEED CHARACTERISTICS z The bipolar chopper driving method should be used for driving. z Any type of design for the drive circuit other than the example described in Section 3.4.1 may affect the standard function of the printer. z Paper is fed in the forward direction when the motor shaft is rotating anticlockwise as seen from the motor gear side. z The motor is driven by a 2-2 phase excitation method and feeds paper by 0.
3.
3.4.1 Motor Drive Circuit (1) Sample Drive Circuit A sample drive circuit for the motor is shown in Figure 3-5.
Excitation Sequence PH1 PH2 Step 4 Step 3 Step 2 Step 1 Step 4 Step 3 Step 2 When the voltage signals shown in Figure 3-6 are input to the motor drive circuit shown in Figure 3-5, as shown in Table 3-3, the LTP F Series feeds the paper in the normal direction when the motor is excited in the order of step 1, step 2, step 3, step 4, step 1, step 2, . . . .
3.4.2 Motor Timing Refer to the time chart in Figure 3-7 when designing the control circuit or software for starting and stopping the motor. Also, note the following precautions: Precautions for Designing the Motor Control Circuit and Software (1) Stop step z To stop the motor, excite for 10 msec with the same phase as the last one in the printing step. (2) Pause state z In the pause state, do not excite the step motor by having I0, I1 go high so as to prevent the motor from heating.
3.4.3 Motor Driving Precautions Acceleration Control When driving the motor, acceleration control is needed to get start up in order to maintain the power force. Drive the motor to the driving speed, according to acceleration steps shown in Table 3-4. The method for accelerating the motor is as follows: 1. 2. 3. 4. 5. Output the start step time.
Table 3-4 Acceleration Steps Number of Steps Speed (pps) Step Time (µsec) Number of Steps Speed (pps) Step Time (µsec) Number of Steps Speed (pps) Step Time (µsec) Start 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 --111 179 232 383 400 412 440 466 491 515 538 560 581 601 621 640 659 677 695 712 729 745 761 777 793 808 823 837 852 866 880 894 907 921 934 947 959 972 985 997 1009 1021 9027 9027 5579 4308 2614 2500 2426 2272 21
Motor Current Control The motor driving at a low speed may make noises during motor driving. Change the current value supplied to the motor so that the noise can be reduced. The current value supplied can be switched by controlling I0 and I1 as follows. Table 3-5 Motor Current Value Motor reference set current Im = Approx. 275 mA I0 I1 LOW LOW HIGH LOW LOW HIGH HIGH HIGH Current Value Im 7 10 4 10 0 10 (Approx.
A sample motor current control is shown in Figure 3-8. Less More than More than than More than More than 2.5ms 2.5ms 2.5ms 2.5ms 2.5ms Motor drive current Approx. 275 275mA) 4 10 0 10 Figure 3-8 Sample of Motor Current Control Drive the motor at Im (approx. 275 mA) during the start-up step and the stop step. Do not switch the current.
3.5 THERMAL HEAD The thermal head consists of heat elements and a head driver which drives and controls the heat element. Serial print data input from the DAT IN terminal is transferred to the shift register synchronously with the CLK signal, then stored in the latch register at the timing of the LATCH signal. Input of the head print activation signal (DST1, 2) activates the heat elements in accordance with the print data stored in the latch register.
3.5.1 Structure of the Thermal Head (LTPF247) Figure 3-9 shows the thermal head block diagram for the LTPF247. Table 3-7 shows the relationship between DST blocks and activated heat elements. DOT1 DOT192 DOT193 Block 1 DOT448 Block 2 Vp Heat elements Output driver Latch register Shift register DAT IN2 CLK LATCH DST2 DAT OUT2 *1 DAT IN1 DST1 DAT OUT1 *1 TH Thermistor TH Vdd GND *1 N.C.
Table 3-6 DST Blocks and Activated Heat Elements (LTPF247) 3.5.2 DST Number Heat Element Number Dots/DST DST 1 DST 2 1 to 192 193 to 448 192 256 Printed Position of the Data (LTPF247) 192 data dots from No.1 to No.192 which are transferred through DAT IN1 terminal and 256 data dots from No.193 to No.448 are printed as shown in Figure 3-10. For No.1 to No.8 of 192 data dots transferred from the DATA IN1 and No.441 to No.448 of 256 dots data transferred from the DATA IN2, set the NULL data.
3.5.
3.5.4 Structure of the Thermal Head (LTPF347) Figure 3-11 shows the thermal head block diagram for the LTPF347. Table 3-8 shows the relationship between DST blocks and activated heat elements. DOT1 DOT384 Block 1 DOT385 DOT640 Block 2 Vp Heat elements Output driver Latch register Shift register DAT IN2 CLK LATCH DST2 DAT OUT2 *1 DAT IN1 DST1 DAT OUT1 *1 Thermistor TH TH Vdd GND *1 N.C.
Table 3-8 DST Blocks and Activated Heat Elements (LTPF347) 3.5.5 DST Number Heat Element Number Dots/DST DST1 DST2 1 to 384 385 to 640 384 256 Printed Position of the Data (LTPF347) 384 data dots from No.1 to No.384 which are transferred through DAT IN1 terminal and 256 data dots from No.385 to No.640 are printed as shown in Figure 3-12. For No.1 to No.32 of 384 data dots transferred from the DATA IN1 and No.609 to No.640 of 256 data dots transferred from the DATA IN2, set the NULL data.
3.5.
3.5.7 Timing Chart tw CLK thold LAT CLK tsetup DI thold DI DAT IN td DO DAT OUT tsetup LAT LATCH tw LAT tsetup DST DST t Do DRIVE OUT Figure 3-13 Timing Chart 3.5.8 Head Resistance The LTP F Series head resistance is as shown in Table 3-10. Table 3-10 Head Resistance Ranks Head Resistance 630.5 to 669.
3.5.9 Head Voltage The printer has a built-in head driver IC. Table 3-11 shows the head voltage. Table 3-11 Head Voltage Item 3.5.10 Voltage Range Head drive voltage VP 21.6 to 26.4 V Head logic voltage Vdd 4.75 to 5.25 V Peak Current Since the peak current (maximum current) may reach the values calculated using equation (1) when the thermal head is driven, make sure that the allowable current for the cable material and the voltage drop on the cables are well within the specified range.
3.6 CONTROLLING THE HEAD ACTIVATION (DST) PULSE WIDTH 3.6.1 Calculation of the Head Activation Pulse Width To execute high quality printing using the printer, the value that is calculated using the following equation (2) must be adjusted according to the printer installation environment. Calculate each value used according to the steps in Sections 3.6.2 to 3.6.5 and control so that the pulse width with the t (msec) value obtained by substituting each value into the equation (2).
3.6.3 Adjustment of the Head Resistance Adjustment of the head resistance is according to equation (4). Due to wiring resistance there is a drop in voltage. Equation (4): R= ( RH + Ri + (Rc + rc ) ×N )2 RH RH:Head resistance, RH=650 Ω Ri: Wiring resistance in the thermal head (Ω), Ri=25Ω RC: Common terminal wiring resistance in the thermal head LTPF247 RC=0.14 (Ω) LTPF347 RC=0.165 (Ω) rc: Wiring resistance between Vp and GND (Ω)∗1 N: Number of dots driven at the same time ∗1 3.6.
3.6.5 Heat Storage Coefficient A difference between an actual rise in temperature of the thermal head due to the head activation and the detected temperature by the thermistor occurs in the high speed printing. Therefore, a correction of the activation pulse through the simulation of a rise in thermal head temperature is needed. A correction may not be needed when the print ratio is low. Set “1” as the heat storage coefficient at this time.
3.6.6 Thermistor Resistance The resistance of the thermistor at the operating temperature TX (°C) is determined using the following equation (7). Equation (7): RX=R25 × EXP 1 B× 273+TX RX: R25: B: TX: EXP (A) : 1 − 298 Resistance at operating temperature Tx (°C) 30 kΩ ± 5% (25°C) 3950 K ± 2 % Operating temperature (°C) The Ath power of natural logarithm e (2.
Table 3-12 Temperature and Corresponding Thermistor Resistance Temperature (°°C) Thermistor Resistance (kΩ Ω) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 100.99 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.
3.6.7 Detecting Abnormal Temperatures of the Thermal Head To protect the thermal head and to ensure personal safety, abnormal thermal head temperatures must be detected by both hardware and software as follows: z Detecting abnormal temperatures by software Design software that will deactivate the heat elements if the thermal head thermistor (TH) detects a temperature of 80°C or more (thermistor resistance RTH ≤ 3.80 kΩ), and reactivate the heat elements when a temperature of 60°C or lower (RTH ≥ 7.
3.7 PAPER DETECTOR The printer has a built-in paper detector (reflection type photo-interrupter) to detect whether paper is present or not. An external circuit should be designed so that it detects the output from the paper detector and does not activate the thermal head when there is no paper. Doing not so may cause damage to the thermal head or platen roller or shorten the life of the thermal head significantly. 3.7.
Table 3-14 Paper Detector Input/Output Conditions Item LED (input) Phototransistor (output) Transfer characteristics 3.7.2 Symbol Forward voltage Reverse current Dark current Min. Std. Max. ICEO IF=10 mA VR=5 V IF=0 mA, VCE=10 V 1.0 V 1.2 V 1.6 V 10 µA 200 nA IC ILEAK VCE(sat) IF=10 mA, VCE=5 V IF=10 mA, VCE=5 V IF=10 mA, IC=5 µA 150 µA 600 µA 1 µA 0.
3.8 PLATEN POSITION DETECTOR The printer has a built-in platen position detector for detecting whether the platen unit is opened or closed. This detector is a mechanical switch which is designed to be in a CLOSED state when the platen unit is closed and to be in an OPENED state when it is opened. The combination of the platen position detector with the paper detector in Chapter 3.7 will make it possible to detect the position of the platen.
3-32
CHAPTER 4 CONNECTING TERMINALS Use the recommended connectors listed in Table 4-1 to connect the printer firmly to the external circuits. Table 4-1 Connectors for External Circuit and Recommended Connectors for the Other FFC No. 1 2 ∗ Function and Model Number Thermal head control connector (JAE:IL-FPC-28CLIP) Motor connector and Detector connector (MOLEX INC: 51021-0900) Number of Pins 28 9 Recommended Connectors (External Circuit) Core number: 28, Conductor type: 0.1×0.8, Strip length: 4.
4.1 THERMAL HEAD CONTROL TERMINALS Figure 4-1 shows the terminal configuration of the thermal head control connector.
Table 4-2 Thermal Head Control Terminal Assignments (LTPF247) Terminal Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Signal Name Vp Vp Vp Vp DAT OUT1 DAT IN1 GND GND GND GND GND DST1 CLK LATCH Vdd TH TH DST2 GND GND GND GND DAT OUT2 DAT IN2 Vp Vp Vp Vp Input/Output Output Input Input Input Input Output Output Input Output Input Function Head drive power Head drive power Head drive power Head drive power Print data output Print data i
Table 4-3 Thermal Head Control Terminal Assignments (LTPF347) Terminal Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Signal Name Vp Vp Vp Vp DAT OUT1 DAT IN1 GND GND GND GND GND DST1 CLK LATCH Vdd TH TH DST2 GND GND GND GND DAT OUT2 DAT IN2 Vp Vp Vp Vp Input/Output Output Input Input Input Input Output Output Input Output Input Function Head drive power Head drive power Head drive power Head drive power Print data output Print data i
4.2 MOTOR CONTROL TERMINALS Figure 4-2 shows the terminal configuration for motor control and detector connection, and Table 4-4 shows their terminal assignments.
4-6
CHAPTER 5 DRIVE METHOD Drive the motor and the thermal head at the same time for printing. Figure 5-1 is a timing chart for driving using two divisions. Figure 5-1 is an example of acceleration control of the motor, data transfer to the head and two-divisions of the head. Timing chart of Figure 5-1 is explained in order thereinafter. A: Pause state Transfer the data which are printed in the first dot line to the SHIFT REGISTER in the DST1 sideof the thermal head.
Repeat the steps in the same way. Transfer the data which will be printed in the next step to the thermal head while starting the activation of the thermal head. The data transfer time and head activation time may be longer than the motor step time according to the type of the thermal paper, printing data and operational environment. In this case, hold the motor step until completion of printing. Keep 0.1 msec or more for the pause time after head activation.
CHAPTER 6 HOUSING DESIGN GUIDE 6.1 6.1.1 SECURING THE PRINTER Printer Mounting Dimensions As shown in Figure 6-1, secure the printer at four mounting holes: a, b, c and d. The indents #1 and #2 are for positioning.
Unit: mm Figure 6-1 Printer Mounting Dimensions 6-2
6.1.2 Recommended Screws Recommended mounting screws are as follows: c JIS B1111 M2.6 and M3 Cross-Recessed Head Machine screw d Small P Tight 2.6 screw for resinated material 6.1.3 Precautions for Securing the Printer Pay attention to the following when securing the printer. Failure to follow these instructions may cause deterioration of print quality, paper skew, paper jam, noise or damage. z Prevent excessive force or torsion when securing the printer.
6.2 LAYOUT OF PRINTER AND PAPER The LTP F Series can be laid out as shown in Figure 6-2 according to the loading direction of the paper. Heat element Platen Thermal paper Thermal head Mounting face Paper detector The distance between the paper detector and the heat element is approximately 8 mm.
6.3 WHERE TO MOUNT THE PAPER HOLDER When determining the layout of paper holder, note the following: z When you use a paper roll, set the holder so that the paper is straight in relation with the paper inlet without any horizontal shifting, and the center axis of the paper roll is parallel with the printer. z Paper supply load to the printer should be 0.49N (50gf). 6.
6.5 WHERE TO MOUNT THE PLATEN RELEASE KNOB The platen release knob fitted to the outer case can be installed by using the outer shape of the release lever and three holes. CHAPTER 7 shows the appearance and the positions of the holes. Do not apply a force of 29.4 N (3 kgf) or more to the release lever. Doing so may cause deformation and malfunction of the lever. 6.6 WHERE TO MOUNT THE PAPER CUTTER Design the layout of the autocutter so that it does not interfere with the paper feed.
CHAPTER 7 APPEARANCE AND DIMENSIONS Figure 7-1 shows the appearance and the external dimensions of the LTPF247. Figure 7-2 shows the appearance and the external dimensions of the Platen Unit for the LTPF247. Figure 7-3 shows the appearance and the external dimensions of the LTPF347. Figure 7-4 shows the appearance and the external dimensions of the Platen Unit for the LTPF347.
Unit: mm General tolerance: ±0.
Unit: mm General tolerance: ±0.
Unit: mm General tolerance: ±0.
Unit: mm General tolerance: ±0.
7-6
CHAPTER 8 LOADING/UNLOADING PAPER AND HEAD CLEANING 8.1 LOADING/UNLOADING PAPER PRECAUTIONS (1) Loading paper z Turn over the release lever to the direction of the arrow in the Figure 8-1. Figure 8-1 Loading Paper (1) z Pull up the platen after making sure that the platen is released from the release lever.
z Set the paper straight into the paper insert position until 5 cm or more of the paper edge is projected from the upper surface of the mechanism. (See Figure 8-2.) Close the platen after making sure that the paper is set straight. (Close state) Figure 8-2 Loading Paper (2) z When the platen is closed, the gear A and the gear B come together (See Figure 8-3) and the platen may stop. In this case, pull up the platen by the release lever, and then close the platen again.
(2) Unloading paper z Unload paper in the same manner for loading paper. (3) Cleaning a paper jam z Unload the paper, following manner for unloading the paper.
8.2 HEAD CLEANING PRECAUTIONS AND PROCEDURE 8.2.1 Head Cleaning Precautions (1) Do not clean the head directly after printing because the thermal head unit and its periphery are hot. (2) Do not use sandpaper, cutter, etc. when cleaning. They will damage the heat elements. 8.2.2 Head Cleaning Procedure (1) Turn over the lever to the direction of the arrow in the Figure 8-4. Pull up the platen after making sure that the platen is released from the lever.
CHAPTER 9 PERIPHERALS 9.1 AUTOCUTTER UNIT The ACU F Series autocutter unit can be installed on this printer as shown in Table 9-1. The ACU F Series paper cutter unit is a sliding type autocutter. Please refer to the “ACU F SERIES AUTOCUTTER UNIT TECHNICAL REFERENCE” for the specifications and drive method.
9.1.1 Installation Method (1) Installing the autocutter unit Movable unit Place the movable blade unit on the mechanism as shown in Figure 9-1. Recommended screws: JIS 1188 pan head machine screw (small round type) M3×6 Be careful not to damage the thermal head during installation. Positioning bosses Screw hole for mounting the GND wire (M2.
Fixing Blade Unit (1) Remove the protection tape that is attached to the fixing blade unit as shown in Figure 9-2. Handle with care the fixing blade edge after removing the protection tape. (2) Mount the fixing blade unit to the autocutter unit with 2 screws. Recommended screws: JIS 1188 pan head machine screw (small round type) M2×4. Be careful not to damage the platen during installation.
9.1.2 Clearing a Paper Jam in the Autocutter Owing to the paper jammed, if the cutter has been locked during paper cutting, power off the motor immediately and cancel the lock by performing the following procedures manually. (1) Tear transparent film from the upper surface of the autocutter (Figure 9-4 (1)), turn the knob in the direction shown in Figure 9-4 (2) until the entire hole of the warm wheel can be seen from the standby position confirmation window and retreat the movable blade.
9.1.3 Consideration for Outer Case Design (1) Design the outer case of the paper outlet side of the autocutter unit so that the paper does not go between the outer case and the autocutter unit. (2) The outer case should not change the paper loading direction sharply in the area around the paper outlet. (3) The outer case should be designed so that the user’s fingers or other objects will not be inserted into the paper outlet.
Unit: mm Figure 9-6 Outer Case Design Sample (Mechanism Side) 9-6
9.1.4 Considerations for Using (1) Do not back feed paper after cutting paper using the autocutter unit because it will cause a paper jam. (2) To prevent paper from jamming, feed paper or print feed 7 mm or more after cutting paper. (3) To make the most efficient use of paper, as shown in Figure 9-7, print area A for the next print portion after printing area B, and then cut the paper.
9.1.5 Appearance of the Printer with the Autocutter Installed Figure 9-8 shows an appearance and external dimensions of the LTPF247 with the autocutter installed. Figure 9-9 shows an appearance and external dimensions of the LTPF347 with the autocutter installed. Unit: mm General tolerance: ±0.
Unit: mm General tolerance: ±0.
Unit: mm General tolerance: ±0.
Unit: mm General tolerance: ±0.
9-12
