Fujitsu FTP-639MCL354 Owner's manual

FTP-639MCL354 SPECIFICATION
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THERMAL PRINTER
FTP-639MCL354
PRODUCT
SPECIFICATION
02.08.22Ｈ．Ｏｈｔｓｕｋａ

FTP-639MCL354 SPECIFICATION
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− Table of Contents −
1 ． Guideline for product recycling
2 ． Product design, warnings and cautions for using the product
2-1. Handling the printer
2-2. Notice on installation and settings
2-3. Paper to be used
2-4. Cleaning
2-5. Storing
2-6. The supply method of rolled paper
2-7. Others
3. Specifications
3-1. Application
3-2. Overview
3-3. Structure
3-4. Standard specifications
3-5. Outer dimensions and installing position
3-6. Connector (flexible) specifications
3-7. Thermal head specifications
3-8. Stepping motor specifications
3-9. Sensor specifications
4 ． Product model plate
5 ． Packing
6 ． Pre-printing specifications
7 ． Revision history table

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1.Guideline for product recycling
•Fujitsu Component Co., Ltd. is making an effort to promote the environmentalmanagement per ISO 14001 with
a policy “Better corporate activities while valuing the environment”
•The below lists the components and their materials used in this printer. Refer this list when the printer is to be
recycled.
FTP-639MCL3５4List of materials
No. Name of components Material
1Printer frame(gear side) Zinc alloy
2Printer frame (center) Zinc alloy
3Printer frame (switch side) Zinc alloy
4Gear cover POM resin
5Rubber roller Silicone rubber + SUM
6Platen gear, middle gears 1 and 2 POM resin
7Pulse motor SPCC + iron + copper wire
8Paper guide PPE resin
9Platen open lever SUS
10 Thermal head Aluminum + ceramic substrate
11 Head pressuring spring SUS
12 Bearing Sintered alloy
13 FPC PI, copper leaf, solder plating
14 Auto cutter *1
【Abbreviations for the materials used】
SUS: Stainless steel
POM: Polyacetal resin
PC: Polycarbonate
SPCC: Rolled steel plate
PI: Polyimide
PPE: Polyphenylene Ether
*1:Please refer to specifications of FTP-639CT001.

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2.Product design, warnings and cautions for using the product
2-1. Handling the printer
(1) When handling this printer, be sure to take any preventive measure against static electricity
such as Disposable Wrist Strap in order to prevent damages of inner parts of the printer
caused by the static electricity.
(2) The thermal head and FPC are shipped as they are connected. When installing the printer,
do not pull or apply any extra force in order to avoid the connected part of the thermal head
and FPC from being disconnected or deviated. Using the printer with the part is deviated
may destroy the head. If it is deviated or disconnected, contact us.
In addition, for the connection of FPC and the control circuit side, as shown in the figure
below, the checking mark for attachment is seen on FPC; therefore, follow the mark and
make sure not to deviate when attaching.
(3) Never attempt to touch FPC and the probe part of the signal line of FFC (parts which are
soldering-plated) and not to hit them with something hard.
(4) Do not perform the contact bending of FPC because it may cause the disconnection. If
FPC requires to be bent, the bending should be more than R1. Once it is bent, do not
rework (straighten or bend backward).
（5）If any paper ejected from this printer is pulled away with an unnecessarily strong force when
the platen-open lever is open,it may cause the platen gear to get off the track and damage the
gear. Do not attempt to pull any paper ejected from the printer.
(6) If any voltage is applied to the thermal head when the head or paper is wet due to
condensation, it may be damaged by electrolytic corrosion; therefore, when using the printer,
pay attention to the following items.
＊Do not apply any electric power to the printer when it is not used.
＊Do not perform the printing with any wet paper.
＊Do not apply any electric power to the printer under any environment where any dew
condensation is possible to occur.

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＊Turn off all electric power to the head immediately when condensation occurs. Use
the head only after the head is completely dried.
＊Depending on the environment where the printer is used (the low temperature or high
humidity), condensation may be caused by water vapor generated from the used paper
when performing the printing of the high printing rate (solid fills, zigzag printing);
therefore, the environment should be considerably evaluated.
（7）When any paper is not set at the printer,be sure to lift down the platen-release lever. If the
paper is run out during the printing,stop all actions of the printer in order to prevent the
printing without the paper fed. If the printing is continued without any paper fed,it may
cause the trouble of the printer.
（8）When using this printer for the continuous actions, the temperature of the head printer board
(the detected temperature with the thermistor) should be equal or less than 65 degrees
Centigrade for the temperature protection of IC inside of the printer as well as the surface
temperature of the motor should be equal or less than 90 degrees Centigrade for he
temperature protection of the motor coil.
2-2Notice on installation and settings
(1) When installing the printer,fix the edge part with a hook at two places and fix the rear part
with screws of M3 at two places. Flatness of the installing surface of the printer should be
within equal or less than 0.1mm. It is recommended that the printer is connected to the
main body FG with screws of M3 at two places (refer to the figure of the installation
dimension). Pay attention not to apply any extra force to the printer main body,FPC since
any of such force will give unfavorable effects to the printing quality,paper traveling
property (meandering,running short of the paper,and the paper jam),and life time.
(2) Then installing the printer,install it so that the printer and the rolled paper should be parallel
as much as possible. When designing the casing,it should be designed so that the printer
and the holder part of the roller paper are located at the place shown in the bellow figure.
The roller paper should be ejected smoothly so that the paper does not hit anything such as
the cover. If the above is not conformed,troubles such as meandering of the printing paper,
the running short of the paper,and the paper jam may occur.

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(3) When plugging in and out FPC to the connector of the control side, be sure that all power is
turned off before doing that.
(4) Use our recommended connector as the one of the control side of FPC. If any other
connector is used, fully confirm the properties (the contact resistance, drawing strength, and
the allowable power supply voltage) before using.
(5) The back tension of the rolled paper should be equal or less than 1.96N (200g) including the
start up. If it exceeds equal or greater than 1.96N, the platen gear may get off the track and
causes to damage the gear.
(6) For the attitude of mounting the cutter, follow the instructions below.
Attitude C: Do not use C because paper chips intrude the cutter.
2-3Paper to be used
（1）Regarding the printing quality and lifetime; therefore, carefully confirm the property of the
paper before using.
（2）When using the perforated paper, the punching direction of the perforations should be set to
face the thermosensitive side. The height of burrs of the perforations and dusts of them may
cause troubles such as deterioration of the printing quality, the paper end sensor, the platen
gear’s getting off the track, and the lifetime; therefore, carefully check the perforated paper
before using.
（3）To reduce the loads during the paper feeding and to improve the sensitivity of the paper end
sensor, when rolling the paper, the thermosensitive side of the paper should be faced outside.
（4）Use the rolled paper of which inner diameter should be equal or greater than φ8 (the
diameter when there is not core).
2-4Cleaning
Paper residues or foreign matter may shorten the life of the head or platen. Clean the
printer periodically.
2-5Storing
（1）When storing the printer for the long-term (equal or longer than six months at the room
temperature), lift down the platen-release lever and insert the paper between the head and the
platen. If the rubber part of the platen and the head have continued to directly contact for a
long term, the rubber part will be deformed and may affect the quality of printing.
（2）Do not store the printer in damp places and places with drastic temperature variations.
Condensation on the printer may cause troubles such as thermal head damages and action
failures.
（3）Do not store the printer in dusty places. Using the printer with dusts adhered on it may
cause troubles to the printing and actions.

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2-6The supply method of rolled paper
(1) When printing in the paper supplied from rolled paper, printing disorder may
occur according to the inertia of rolled paper at the time of a printing start.
When you use the rolled paper exceeding φ80mm, please establish the
mechanism for a shock buffer between rolled paper and a printer.
2-7Others
(1) If any trouble occur, it shall be solved by mutual discussion based on this specification.
Only the printer is subject to quality assurance.
(2) Changes and additions that do not have compatibility of this specification shall be carries out
according to the mutual discussion. However, because this printer is the standard model,
changes can be carried out without notices within a range where compatibility exists.
(3) This thermal printer comes with an 18-month warranty after the date of production (printer
serial No.). Any failure caused by the customer side in the warranty period and after expiry
of the warranty shall be serviced with charge. The maintenance service can be available in
five year after the date of discontinuation of producing this printer.
(4) This printer does not provide the dust-tight and drip-proof structure. Take measures for the
dust-tightness and drip-proof from the main body casing side,as required.
(5) Surfaces and edge surfaces of metallic parts may change colors; therefore,take measures for
discoloration as required,such as covering with a casing.
(6) Smoke may be generated from parts of the printer; therefore,take measures for preventing
any foreign conductive materials from entering the inside as required,such as covering with
a casing.

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3. Specifications
3-1Application
This specification is applies to FTP-639MCL354.
Standards by this specification are satisfied by standard interface .
3-2Overview
This printer is the small and lightweight printer which build in a line dot thermal head of resolution 8
dots /mm..
The auto cutter is carried in this printer. These specifications should presuppose that it is main with
the specification of a printer part, and refer to the following product specifications for the
specification of an auto cutter.
FTP-639CT001 Auto cutter specification
3-3Structure
Below is the figure of this printer's structure (the mechanical part).
Flexible cable for head Flexible cable for motor & sensor
Platen Release switch Motor
Deceleration
gear
Thermal head
Platen unit
Photo sensor (paper detect sensor)
Cutter frame
Auto cutter
Printer

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3-4Standard specifications
Item Specifications
Printing method Direct thermosensitive method
Valid printing width 72 mm
Dot ｓｔｒｕｃｔｕｒｅ 576 dots /line
Dot pitch(rsolution) 0.125 mm (8 dots/mm)
Dot size 0.125mm×0.16mm
Printing ｄｅｎｓｉｔｙ OD value greater than 0.8, in use of the specified paper under our standard printing conditions.
※Measuring device: Sakura densitometer, PDA-65, by Konika Co., Ltd.
Printing specifications
Printing speed 200mm/s [24V drive, Standard paper(PD150R equivalent), Room temperature, High speed mode]
Highly sensitive
paper TF50KS-E4 (width: 82.5+0
-1mm), Nippon Paper
TF60KS-E (width: 82.5+0
-1mm), Nippon Paper
Standard
paper PD150R (width: 82.5+0
-1mm), Oji Paper
TP60KS-F1 (width: 82.5+0
-1mm), Nippon Paper
P220VBB-1 (width: 82.5+0
-1mm), Mitsubishi Paper
Middle-term
ｐｒｅｓｅｒｖａｂｌｅ
PD170R (width: 82.5+0
-1mm), Oji Paper
TP50KJ-R (width: 82.5+0
-1mm), Nippon Paper
AFP-235 (width: 82.5+0
-1mm), Mitsubishi Paper
PD160R-N (width: 82.5+0
-1mm), Oji Paper
Specified paper for recording *1
Long-term
ｐｒｅｓｅｒｖａｂｌｅ
HA220AA (width: 82.5+0
-1mm), Mitsubishi Paper
Paper feeding
method Friction feeding (1 dot line/2 pulses, bi-polar 1-2 phase excitation)
Paper feeding precision ±5% At fixed-speed feed with the back tention ｏｆ 0.49N ｏｒ less (±2% at
25℃and RH 60％)
Line gap in one print
line by enable drive Less than 0.125 mm, the step difference between the right and left printing lines.
Thermal head
temperature
detection Thermistor
Paper detection
Mark detection
Photo interrupter
Detective functions
Platen release Sliding swich
External dimensions
(W x D x H) 109.7±1mm×62.5±0.5mm×37.7±0.5mm (excluding FPC)
Refer to the outer dimension drawing in section 3-5 for details.
Weight
Approx320g
Average resistance of
the ｔｈｅｒｍａｌ head 800 Ω±3%
*1:If any other paper except for the specified above is used, through the mutual discussion, the paper shall be
evaluated, checked and adoption shall be determined.

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Item Specifications
For printing Voltage: DC 24V±5%,Printing speed:200mm/s
Peak current: 4.0A (at 25℃, Rav=800Ω, ２４ V, printing black ratio 25%)
Head
For logic Voltage: DC 5V±５%
Current: 0.2 ＡMax.
Drive power
Motor drive Voltage: DC 24V±5%
Current: 1.0 A Max. (by the F&T standard constant-current drive circuit)
Operating
temperature and
humidity *1
0℃〜+50℃, 20〜85％RH. No dew should be allowed.
Temperature and
humidity in storage -20℃〜60℃, 5〜95％RH. No dew should be allowed. Yet, the paper is not
included.
Environmental
characteristics
Noise Should not exceed 60dB at a point 1 m above from the printing mechanism
position level.
Vibration
(non-operation) 10〜55〜10Hz. Amplitude is 0.15mm. An １octave/min, １G Max. 20 cycle
each to X, Y, and Z directions.
Inpact
(non-operation) 50Ｇ, 11ｍ/ｓ, half-sine wave, 5 times each to X, Y and Z direction
Package drop 75 cm of 6 faces, 75 cm of corners and ridges as it is packed.
Reliability
characteristics*2
Temperature &
humidity cycling
(non-operation)
2 continuous cycles as a unit cycles: -25℃（2H）〜room temp. （2H）〜65℃,
10％RH (2H）〜room temp.
Electric life 1 hundred-million pulses (under our standard printing conditions.)
Head Wear life Paper feed length, 100 km (printing rate 12.5% max.)
Platen release life More than 5000 times (regarding opening and closing as one time.)
Life
Photo interpreter
life 1.2×10４hours (electrified time) with the recommended circuit.
Printing start position on
the left edge 5.25±1.5mm (by paper width 82 mm) from the paper edge to the left printing
edge. However, ①１PLY, when the specified paper for long-term record
storage is used.②When no paper jam or no paper empty is present.
*1:The Print density guarantee is +5~+40C. Refer to the figure below for the relation
of the temperature and humidity.(The range is in fat line)
*2:After the test, it shall satisfy the printing specification. (%RH)
85
45
20
7
0 40 50(℃)

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3-6Connector (flexible) specifications
(1) Connector of the control circuit side
CN1: 52610-3090 (molex)
CN2: 52610-1090(molex)
(2) Pin assignment (flexible) of the printer mechanical side
CN1:The platen release switch side is defined as No1
CN2:The motor excitation signal side is defined as No1(31)
No Symbol Signal name
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
SW
SW
VH
VH
VH
VH
DI
STB 3
STB 4
VDD
TM
GND
GND
GND
GND
GND
GND
GND
GND
GND
TM
STB 1
STB2
LAT
CLK
DO
VH
VH
VH
VH
Platen open switch
Platen open switch
Head drive power
Head drive power
Head drive power
Head drive power
Data in
Strobe 3
Strobe 4
Logic power
Head Thermistor
Head ground
Head ground
Head ground
Head ground
Head ground
Head ground
Head ground
Head ground
Head ground
Head Thermistor
Strobe １
Strobe 2
Data latch
Clock
Data out
Head drive power
Head drive power
Head drive power
Head drive power
31
32
33
34
35
36
37
38
39
40
Ｎ.Ｃ
ＴＭ
ＴＭ
MT／A
MT A
MT／B
MT B
PHK
VSEN
PHE
−
Motor Thermistor
Motor Thermistor
Excitation signal／A
Excitation signal A
Excitation signal／B
Excitation signal B
Cathode for photo interrupter
Paper sensor power
Emitter for photo interrupter
Photo sensor (paper detect sensor)
Platen unit
Thermal head
motor
FPC
Connect terminal : surface side
connector pin No 40・・31,30・・・・・・・・・・・・・ 1

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(3) Cautions
①Do not plug in and out any flexible connector when the power is being supplied.
②Do not add any unnecessary force to the flexible connector.
③Plugging in and out FPC of the control circuit side shall be equal or less than 10 times. Do not
plug in and out FPC of the head side.
3-7Thermal head specifications
(1) General characteristics
①System: Thermosensitive line dot system
②The total number of dots: 576dots/line
③Heating resistor dot pitch: 0.125mm
④Heating element structure: 2 heating elements/dot
⑤Average resistance value of a heating element ：800Ω± 3%
(2) Maximum rating (at 25 degrees centigrade of the surrounding temperature)
Item Max. rated value Unit Conditions
Printing cycle (S. L. T.) 1.25 0.625 ms/line Tsub=25℃
Printing energy 0.31 0.16 mj/dot When it impresses continuously.
(printing rate 100%)
Printing power voltage:
(VH) 26.4 VVp<28V Vp is peak voltage of VH
Board temperature 65 ℃Thermistor temperature.
Concurrent printing dot
number 432 Dot
Logic power voltage:
(Vdd) 7VIncluding the peak voltage.
Logic input voltage: (Vin) -0.5〜Vdd+0.5 V
(3) Electrical characteristics
①Electrical characteristics: Table 1
②Timing chart: Fig. 3-1
③Equivalent circuit: Fig. -2
④Driver structure: 144 bits×4drivers
(4) Conditions for electrical actions
Item Symbol Electric conditions Unit Conditions
Power
consumption Po 0.61 W/dot
Supply voltage VH 24.0 V
Recording cycle S.L.T 0.625 ms/line
Rav=800Ω
Concurrent applied dot
number.
With 144 dots. (Average
0.24 mj/dot
(0.38) ms 5℃
0.18 mj/dot
(0.29) ms 25℃
0.15 mj/dot
Energy
consumption
(Record pulse
width)
(Note 2)
Eo
(Ton)
(0.24) ms 45℃
Current
consumption Io 3.0 A
Division number 11
printing rate
25%)
Note 2) The printing interval (SLT) is defined as the time in which strobes are sequentially driven and the printing
of one line has all been completed. The relation of the applied voltage and the electric power application
time (Ton) is calculated with calculation formula as shown below.
Ｐｏ ＝Ｉｏ 2×Ｒａｖ＝
ＶＨ2×Ｒａｖ
（Ｒ com×Ｎ＋Rav＋Ric＋Rlead）2

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Ｔｏｎ＝Ｅｏ÷Ｐｏ
or
Ｐｏ ＝Ｅｏ÷Ｔｏｎ
ＶＨ ＝√（Ｐｏ÷Ｒａｖ）×（Rcom×Ｎ＋Rav＋Ric＋Rlead）
Rav:Average resistance value (example) 800 ［Ω］
N:The number of simultaneous printing dot (example) 144 ［dot］
Rcom:Common resistance 0.05［Ω］
Ric:Driver-On resistance 50 ［Ω］
Rlead:Lead resistance 14 ［Ω］
(5) Thermistor characteristics
B constant:3950K±2%
Resistance value R25:30KΩ±5% at25℃
Thermistor calculation formula:RX=R25×EXP{B×(1/TX-1/T25)} T: Absolute temperature
Operating temp. range:-20〜+80℃
Thermal time constant:Within 30sec (in the air)
(6) Cautions on operation
①When performing the continuous printing with high printing rate, regulate the head base
(thermistor) temperature so that it does not exceed the standard value.
②For the waiting time, control (circuit design) the printer so that VH (power supply of the
heating element) is turned off (the GND level) in order to prevent thermal head damages
caused by ions and noises.
③When the thermistor is disconnected, control (circuit design) the printer so that the thermal
head is not overheated.
④Do not input any pulse noise of equal or more than 2V, 20ns in each signal terminal.
⑤Control signals of CLK, LAT, DIN, and STB with C-MOS (equivalent to 74HC240). In
addition, when the power supply is on/off and for the non-printing time, maintain the STB
signal in the "DISABLE" state.
⑥Surge noise to prevent , the cable length of VH and GND shall be equal or shorter
than 100mm. Mount an aluminum electrolytic capacitor of 47 μF between VH and GND
of the head side, which should be as close to the head side as possible. In addition, mount a
0
20
40
60
80
100
120
140
160
180
200
-20 -10 0 10 20 30 40 50 60 70 80
Temperature ［℃］
Resistance value ＫΩ

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laminating ceramic condenser of 0.1 μF between VDD and GND.
⑦When the power supply is on, the order shall be VDD →VH. When the power supply is
off, it shall be VH →VDD.
⑧Make sure not to condense dews on the head. If condensation occurs on the head, maintain
the VH power supply in the off state until condensation has been solved. Ta＝25±10℃
Item Symbol Min. Standard Max. Unit Conditions etc.
Printing power
voltage VH −24.0 26.4 V
Circuit power voltage Vdd 4.75 5.00 5.25 V
Circuit power current Idd −−18 ｍAfDI=fCLK/2
H
VIH 0.8Vdd −Vdd VSTB,DI,LAT,CLK
Input voltage LVIL ０−0.2Vdd V〃
H
IIH DI −−0.5 μAVIH＝５Ｖ
Data input current
(DI) LIIL DI −−-0.5 μAVIL＝０Ｖ
H
IIH STB −−0.5 μA
STB input current
(LOW-ACTIVE) LIIL STB −−-30 μA
H
IIH CLK −−2.0 μA
Clock input
current
(CLK) LIIL CLK −−-2.0 μA
H
IIH LAT −−2.0 μA
Latch input
current
(LAT) LIIL LAT −−-2.0 μA
H
VDOH 4.45 −−VOPEN status, Vdd=4.5V
Data out
(DO) LVDOL −−0.05 V
Output voltage VOL −（1.0）−VReference value, Driver
output part
Clock frequency fCLK −−4MHz
Clock pulse width tw CLK 120 −−ns
Data setup time testup DI 50 −−ns
Data hold time tholdDI 50 −−ns
Data out delay time td DO −−500 ns
Latch pulse width tw LAT １００ −−ns
Latch setup time TestupLAT ２００ −−ns
Latch hold time tholdLAT ５０ −−ns
STB setup time Testup ST B３００ −−ns
Output delay time Tdo −−5μｓ
Refer to the timing
chart.
Table-1Electrical characteristics

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tw CLK
CLOCK(CLK)
t setup DI t hold DI
DATA IN(DI)
“high”:BLACK
“low”:WHITE
td DO
DATA OUT(DI)
“high”:BLACK
“low”:WHITE
t setup LAT t hold LAT
LATCH(LAT)
“High”:HOLD
“Low”:THROUGH tw LAT t setup STB
STROBE(STB)
tdo tdo
DRI
VER OUT
Figure３−１ Timing chart

FTP-639MCL354 SPECIFICATION
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ＶＨ DOT#576 DOT #1
GND
VDD
4
3 ２1
/STB4
144
/STB
３OUTPUT
EACH
/STB
２
/STB1
/LAT
LATCH REGISTER
CLK
DI SHIFT REGISTER
DO
TM THERMISTOR
30K
ΩB:3950
TM
STB No. Dot No. dots/STB
11 ~144 144
2145 ~288 144
3289 ~432 144
4433 ~576 144
Figure３−２ Equivalent circuit

FTP-639MCL354 SPECIFICATION
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3-8Stepping motor specifications
(1) General specification (motor only)
Item Specifications
Model Permanent magnet type
Phase Two phase (bi-polar specification)
Step angle 9 degrees by 1-2 phase excitation
Winding
resistance /
phase 6±10%(at 25℃)
Rated voltage DC24 V
(2) Driving procedures of the stepping motor
①Drive the motor with the 1-2 phase excitation of the bipolar.
②The number of steps per dot line of printing
Excitation method Step No. Rotation angle
1-2 phase excitation 29 degrees /step
③The reference excitation method is described below.
Method Excitation sequence (H: ON, L: OFF)
The 1-2phase excitation
A
B
_
A
_
B
One dot line
(3) Driving the bipolar transistor
①Drive the motor by the fixed current control for the output torque stabilization to the applied voltage
change. This reference excitation current is 500mA. Applying any excessive electric current will
cause the abnormal generation and the excessive torque, which will end in mechanical damages;
therefore, do not apply any electric current that exceeds the requirement.
②Determine the motor driving requirements after confirming effects of load variations caused
by temperature, the humidity, and types of paper. If the motor is driven by any excessive
torque, the gears may be damaged when the paper is locked; therefore, attention should be
paid.

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③In the low-speed drive (the low driving frequency), abnormal noises and the torque
reduction may occur due to resonance of the motor. In the low-speed drive, be sure to
perform sufficient evaluation and confirmation.
④The reference exciting current when the pressurization power supply is applied is 440mA.
Applying any excessive electric current will generate the excessive torque and cause
mechanical damages; therefore, do not apply any electric current that exceeds the
requirement.
⑤At the start of the high-speed printing and the start of the printing after turning off the motor
excitation, perform the speedup control.
(4) Thermistor (Motor) characteristics
B constant:4000 K±2%
Resistance value R25:30 KΩ±5% at25℃
Thermistor calculation formula:RX=R25×EXP{B×(1/TX-1/T25)} T: Absolute temperature
Operating temp. range:-40〜+125℃
(5) Cautions
①If the motor is stopped and its excitation is turned off while the printing is being performed,
because of the elasticity of the rubber roller, troubles may occur at the restart of the motor:
the order of the printing may be disconnected, the printing may be smudged, white lines
may be inserted. When the printing contents are necessary to be continued, complete the
printing without interrupting once it is started. In addition, applying the slight electric
current in the waiting state can reduce effects such as deformation of the rubber roller, as
shown above. In this case, the reference electric current should be 150mA.
②When leaving the printer for the long term, turn off the excitation. Failure to do so, it may
cause heat generation of the motor and the driving elements.
③The motor side wall temperature shall be equal or less than 90 degrees centigrade. If the
temperature exceeds 90 degrees centigrade, the coil inside of the motor may be damaged.
④When any abnormal state occurs, stop driving the printer as soon as possible.
⑤This printer performs one paper feeding operation of one dot line with four steps.
Therefore, for power saving and stable actions, when driving the motor with the 1-2 phase
excitation, control the motor so that it is stopped in the 1-phase excitation state and started
in the 2-phase excitation.
⑥Any printing action with the platen closed and no paper fed may wear the rubber roller and
damage the head. Do not perform the printing in this state.
0
20
40
60
80
100
120
140
160
180
200
-20 020 40 60 80 100 120
Temperature[℃]
Resistance value[ｋΩ]