Seiko LTP F Series Especificaciones

LTP F SERIESLINE THERMAL PRINTER MECHANISMTECHNICAL REFERENCEU00060419201Seiko Instruments Inc.

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1-1CHAPTER 1PRECAUTIONSRead through this manual to design and operate the printer properly.Pay special attention to the precautions noted in each sect

1-21.2 DESIGN AND HANDLING PRECAUTIONSTo maintain the initial level of performance of the printer and to prevent future problems fromoccurring, obser

1-3z Always close the platen and feed the paper at 16 dots or more per line when printing is in astandby state. The elastic deformation of the platen

1-4Printing and paper feeding precautionsz Make sure that variation in the motor drive frequency does not lead to noise or a loss ofpaper feed force

1-51.2.2 Handling PrecautionsIncorrect handling may reduce the efficiency of the printer and cause damage. Handle the printer withthe following preca

1-61.2.3 Precautions on DiscardingWhen discarding used printers, discard them according to the disposal regulations and rules of eachrespective distr

2-1CHAPTER 2FEATURESThe LTP F Series Line Thermal Printer Mechanism is a compact, super high-speed thermal line dotprinting mechanism. It can be used

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3-1CHAPTER 3SPECIFICATIONS3.1 GENERAL SPECIFICATIONSTable 3-1 General SpecificationsSpecificationItemLTPF247 LTPF347Print method Thermal dot line pri

LTP F SERIES LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCEDocument Number U00060419201First Edition August 2001Second Edition February 2002Copyri

3-2Table 3-1 General Specifications (Continued)SpecificationItemLTPF247 LTPF347Life span(at 25°C and rated energy)Activation pulse resistanceAbrasion

3-33.2 HEAT ELEMENT DIMENSIONS3.2.1 Heat Element Dimensions for the LTPF247The LTPF247 contains a thermal head with 448 heat elements (dot-size). T

3-43.2.2 Heat Element Dimensions for the LTPF347The LTPF347 contains a thermal head with 640 heat elements (dot-size). The 576 dots (72 mm tothe pa

3-53.3 PAPER FEED CHARACTERISTICSz The bipolar chopper driving method should be used for driving.z Any type of design for the drive circuit other t

3-63.4 STEP MOTOR CHARACTERISTICSTable 3-2 General Motor SpecificationsItem SpecificationType PMDrive method Bipolar chopperExcitation 2-2 phaseWind

3-73.4.1 Motor Drive Circuit(1) Sample Drive CircuitA sample drive circuit for the motor is shown in Figure 3-5.Figure 3-5 Sample Drive CircuitRecom

3-8 (2) Excitation SequenceWhen the voltage signals shown in Figure 3-6 are input to the motor drive circuit shown inFigure 3-5, as shown in Table 3-3

3-93.4.2 Motor TimingRefer to the time chart in Figure 3-7 when designing the control circuit or software for starting andstopping the motor. Also, n

3-103.4.3 Motor Driving PrecautionsAcceleration ControlWhen driving the motor, acceleration control is needed to get start up in order to maintain th

3-11Table 3-4 Acceleration StepsNumberof StepsSpeed(pps)Step Time(µsec)Numberof StepsSpeed(pps)Step Time(µsec)Numberof StepsSpeed(pps)Step Time(µsec)

iiiPREFACEThis reference manual describes the specifications and basic operating procedures for the LTP F SeriesThermal Printer Mechanism (hereinafter

3-12Motor Current ControlThe motor driving at a low speed may make noises during motor driving. Change the current valuesupplied to the motor so that

3-13A sample motor current control is shown in Figure 3-8.275275mA)010410Figure 3-8 Sample of Motor Current ControlDrive the motor at Im (approx. 275

3-143.5 THERMAL HEADThe thermal head consists of heat elements and a head driver which drives and controls the heatelement.Serial print data input fro

3-153.5.1 Structure of the Thermal Head (LTPF247)Figure 3-9 shows the thermal head block diagram for the LTPF247.Table 3-7 shows the relationship bet

3-16Table 3-6 DST Blocks and Activated Heat Elements (LTPF247)DST Number Heat Element Number Dots/DSTDST 1 1 to 192 192DST 2 193 to 448 2563.5.2 Pri

3-173.5.3 Thermal Head Electrical Characteristics (LTPF247)Table 3-7 Thermal Head Electrical Characteristics (LTPF247)(Ta=25 ± 10°C)Rated valueItem

3-183.5.4 Structure of the Thermal Head (LTPF347)Figure 3-11 shows the thermal head block diagram for the LTPF347.Table 3-8 shows the relationship be

3-19Table 3-8 DST Blocks and Activated Heat Elements (LTPF347)DST Number Heat Element Number Dots/DSTDST1 1 to 384 384DST2 385 to 640 2563.5.5 Print

3-203.5.6 Thermal Head Electrical Characteristics (LTPF347)Table 3-9 Thermal Head Electrical Characteristics (LTPF347)(Ta=25 ± 10°C)Rated valueItem

3-213.5.7 Timing ChartCLKDAT INDAT OUTtw CLKthold DItsetup DIthold LATDSTtsetup LATtw LATtsetup DSTLATCHtd DODRIVE OUTt Dot Do(Hi Active)Figure 3-13

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3-223.5.9 Head VoltageThe printer has a built-in head driver IC. Table 3-11 shows the head voltage.Table 3-11 Head VoltageItemVoltage RangeHead driv

3-233.6 CONTROLLING THE HEAD ACTIVATION (DST) PULSE WIDTH3.6.1 Calculation of the Head Activation Pulse WidthTo execute high quality printing using

3-243.6.3 Adjustment of the Head ResistanceAdjustment of the head resistance is according to equation (4). Due to wiring resistance there is adrop in

3-253.6.5 Heat Storage CoefficientA difference between an actual rise in temperature of the thermal head due to the head activation andthe detected t

3-263.6.6 Thermistor ResistanceThe resistance of the thermistor at the operating temperature TX (°C) is determined using the followingequation (7).Equ

3-27Table 3-12 Temperature and Corresponding Thermistor ResistanceTemperature(°°°°C)ThermistorResistance (kΩΩΩΩ)0 100.995 77.8510 60.5715 47.5320 37.

3-283.6.7 Detecting Abnormal Temperatures of the Thermal HeadTo protect the thermal head and to ensure personal safety, abnormal thermal head tempera

3-293.7 PAPER DETECTORThe printer has a built-in paper detector (reflection type photo-interrupter) to detect whether paper ispresent or not.An extern

3-30Table 3-14 Paper Detector Input/Output ConditionsItem Symbol Conditions Min. Std. Max.Forward voltage VFIF=10 mA 1.0 V 1.2 V 1.6 VLED (input)Reve

3-313.8 PLATEN POSITION DETECTORThe printer has a built-in platen position detector for detecting whether the platen unit is opened orclosed. This d

vTABLE OF CONTENTSSection PageCHAPTER 1 PRECAUTIONS1.1 SAFETY PRECAUTIONS ...

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4-1CHAPTER 4CONNECTING TERMINALSUse the recommended connectors listed in Table 4-1 to connect the printer firmly to the externalcircuits.Table 4-1 C

4-24.1 THERMAL HEAD CONTROL TERMINALSFigure 4-1 shows the terminal configuration of the thermal head control connector.Figure 4-1 Thermal Head Contr

4-3Table 4-2 Thermal Head Control Terminal Assignments (LTPF247)TerminalNumberSignal Name Input/Output Function1Vp  Head drive power2Vp  Head drive

4-4Table 4-3 Thermal Head Control Terminal Assignments (LTPF347)TerminalNumberSignal Name Input/Output Function1Vp  Head drive power2Vp  Head drive

4-54.2 MOTOR CONTROL TERMINALSFigure 4-2 shows the terminal configuration for motor control and detector connection, and Table 4-4shows their terminal

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5-1CHAPTER 5DRIVE METHODDrive the motor and the thermal head at the same time for printing. Figure 5-1 is a timing chart fordriving using two divisio

5-2Repeat the steps in the same way. Transfer the data which will be printed in the next step to thethermal head while starting the activation of the

6-1CHAPTER 6HOUSING DESIGN GUIDE6.1 SECURING THE PRINTER6.1.1 Printer Mounting DimensionsAs shown in Figure 6-1, secure the printer at four mounting

viSection Page3.7 PAPER DETECTOR ... 3-293.7.1

6-2Figure 6-1 Printer Mounting DimensionsUnit: mm

6-36.1.2 Recommended ScrewsRecommended mounting screws are as follows:c JIS B1111 M2.6 and M3 Cross-Recessed Head Machine screwd Small P Tight 2.6 sc

6-46.2 LAYOUT OF PRINTER AND PAPERThe LTP F Series can be laid out as shown in Figure 6-2 according to the loading direction of thepaper.Figure 6-2

6-56.3 WHERE TO MOUNT THE PAPER HOLDERWhen determining the layout of paper holder, note the following:z When you use a paper roll, set the holder s

6-66.5 WHERE TO MOUNT THE PLATEN RELEASE KNOBThe platen release knob fitted to the outer case can be installed by using the outer shape of therelease

7-1CHAPTER 7APPEARANCE AND DIMENSIONSFigure 7-1 shows the appearance and the external dimensions of the LTPF247.Figure 7-2 shows the appearance and th

7-2Figure 7-1 Appearance and Dimensions (LTPF247)Unit: mmGeneral tolerance: ±0.2

7-3Figure 7-2 Appearance and Dimensions of the Platen Unit (LTPF247)Unit: mmGeneral tolerance: ±0.2

7-4Figure 7-3 Appearance and Dimensions (LTPF347)Unit: mmGeneral tolerance: ±0.2

7-5Figure 7-4 Appearance and Dimensions of the Platen Unit (LTPF347)Unit: mmGeneral tolerance: ±0.2

viiSection PageCHAPTER 9 PERIPHERALS9.1 AUTOCUTTER UNIT ...

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8-1CHAPTER 8LOADING/UNLOADING PAPER AND HEAD CLEANING8.1 LOADING/UNLOADING PAPER PRECAUTIONS(1) Loading paperz Turn over the release lever to the di

8-2z Set the paper straight into the paper insert position until 5 cm or more of the paper edge isprojected from the upper surface of the mechanism.

8-3(2) Unloading paperz Unload paper in the same manner for loading paper.(3) Cleaning a paper jamz Unload the paper, following manner for unloading

8-48.2 HEAD CLEANING PRECAUTIONS AND PROCEDURE8.2.1 Head Cleaning Precautions(1) Do not clean the head directly after printing because the thermal h

9-1CHAPTER 9PERIPHERALS9.1 AUTOCUTTER UNITThe ACU F Series autocutter unit can be installed on this printer as shown in Table 9-1.The ACU F Series pap

9-29.1.1 Installation Method(1) Installing the autocutter unitMovable unitPlace the movable blade unit on the mechanism as shown in Figure 9-1.Recomm

9-3Fixing 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

9-49.1.2 Clearing a Paper Jam in the AutocutterOwing to the paper jammed, if the cutter has been locked during paper cutting, power off the motorimme

9-59.1.3 Consideration for Outer Case Design(1) Design the outer case of the paper outlet side of the autocutter unit so that the paper doesnot go b

viiiFIGURESFigure Page3-1 Heat Element Dimensions (LTPF247) ... 3-33-2

9-6Unit: mmFigure 9-6 Outer Case Design Sample (Mechanism Side)

9-79.1.4 Considerations for Using(1) Do not back feed paper after cutting paper using the autocutter unit because it will cause a paperjam.(2) To pre

9-89.1.5 Appearance of the Printer with the Autocutter InstalledFigure 9-8 shows an appearance and external dimensions of the LTPF247 with the autocu

9-9Figure 9-9 Appearance of the Printer with the Autocutter Installed (LTPF247 with ACUF224B)Unit: mmGeneral tolerance: ±0.2

9-10Figure 9-10 Appearance of the Printer with the Autocutter Installed (LTPF347 with ACUF324A)Unit: mmGeneral tolerance: ±0.2

9-11Figure 9-11 Appearance of the Printer with the Autocutter Installed (LTPF347 with ACUF324B)Unit: mmGeneral tolerance: ±0.2

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ixTABLESTable Page3-1 General Specifications ..........................