參數(shù)資料
型號: LTPH245
廠商: Seiko Instruments Inc.
英文描述: LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCE
中文描述: 熱敏打印機(jī)芯線技術(shù)參考
文件頁數(shù): 33/64頁
文件大?。?/td> 841K
代理商: LTPH245
3-20
3.6.3
Calculation of Head Activation Voltage
Calculate the applied voltage using equation (5).
Equation (5):
V=Vp
×
0.98 - 1.26
Vp: Head activation voltage (V)
3.6.4 Calculation of Head Resistance
A drop in voltage occurs depending on the wiring resistance. Calculate the head resistance using
equation (6).
Equation (6):
RH: Head resistance depending on resistance ranks
rank A (178.6 - 195.5
):
rank B (161.6 - 178.5
):
rank C (144.5 - 161.5
):
25: Wiring resistance in the thermal head (
)
R
C
: Common terminal wiring resistance in the thermal head:
r
C
:
Wiring resistance between V
P
and GND (
)
1
N:
Number of dots driven simultaneously
195.5 (
)
178.5 (
)
161.5 (
)
0.2 (
)
1
It indicates a series resistance of wire and relay switching circuits used between the FFC terminals and power
supply.
( RH + 25 + (R
C
+ r
C
)
×
N )
2
R=
RH
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