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(3)
Cautions
① Do not plug in and out any flexible connector when the power is being supplied.
② Do not add any unnecessary force to the flexible connector.
③ Plugging 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.
3-7
Thermal head specifications
(1) General characteristics
① System: Thermosensitive line dot system
② The total number of dots: 576 dots/line
③ Heating resistor dot pitch: 0.125mm
④ Heating element structure: 2 heating elements/dot
⑤ Average resistance value of a heating element ：800Ω± 3%
(2) Maximum rating (at 25 degrees centigrade of the surrounding temperature)
Item
Printing cycle (S. L. T.)
Printing energy
Printing power voltage:
(VH)
Board temperature
Concurrent printing dot
number
Logic power voltage:
(Vdd)
Logic input voltage: (Vin)
(3) Electrical characteristics
① Electrical characteristics: Table 1
② Timing chart: Fig. 3-1
③ Equivalent circuit: Fig. -2
④ Driver structure: 144 bits×4 drivers
(4) Conditions for electrical actions
Item
Symbol
Power
Po
consumption
Supply voltage
VH
Recording cycle
S.L.T
Energy
Eo
consumption
(Ton)
(Record pulse
width)
(Note 2)
Current
Io
consumption
Division number
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.
2
Ｐ ｏ ＝ Ｉ ｏ
× Ｒ ａ ｖ ＝
Date
Design
Inspection
Rev.
Design
Max. rated value
1.25
0.625
0.31
0.16
26.4
65
432
7
-0.5〜Vdd+0.5
Electric conditions
0.61
24.0
0.625
0.24
(0.38)
0.18
(0.29)
0.15
(0.24)
3.0
1
2
ＶＨ
× Ｒ ａ ｖ
（ Ｒcom×Ｎ＋Rav＋Ric＋Rlead ）
Changes made
Inspect.
Unit
ms/line
Tsub=25℃
When it impresses continuously.
mj/dot
(
printing rate 100%)
V
Vp<28V Vp is peak voltage of VH
℃
Thermistor temperature.
Dot
V
Including the peak voltage.
V
Unit
W/dot
V
ms/line
mj/dot
ms
mj/dot
ms
mj/dot
ms
A
1
2
FTP-639MCL354 SPECIFICATION
A1NA02273-0354
FUJITSU COMPONENT LIMITED
Approv.
Conditions
Conditions
Rav=800Ω
Concurrent applied dot
number.
With 144 dots. (Average
printing rate
5℃
25%)
25℃
45℃
Submit to
14 26
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