參數資料
型號： LTPH245
廠商： Seiko Instruments Inc.
英文描述： LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCE
中文描述： 熱敏打印機芯線技術參考
文件頁數： 40/64頁
文件大?。?/td> 841K
代理商： LTPH245
3-27
3.6.10 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:
Detecting abnormal temperatures by software
Design software that will deactivate the heat elements if the thermal head thermistor (TH)
detects a temperature 80
°
C or higher (thermistor resistance RTH
≤
2.48 k
), and reactivate the
heat elements when a temperature of 60
°
C or lower (RTH
≥
4.46 k
) is detected. If the thermal
head continues to be activated at a temperature higher than 80
°
C, the life of the thermal head
may be shortened significantly.
Detecting abnormal temperatures by hardware
If the control unit (CPU) malfunctions, the software for detecting abnormal temperatures may not
function properly, resulting in overheating of the thermal head. Overheating of the thermal head
may cause damage to the thermal head or injury.
Always use hardware in conjunction with software for detecting abnormal temperatures to
ensure personal safety. (If the control unit malfunctions, it may be impossible to prevent
damage to the thermal head even if a detection of abnormal temperature is detected by
hardware.)
Using a window comparator circuit or similar detector, design hardware that detects the
following abnormal conditions:
(a) Overheating of the thermal head (approximately 100
°
C or higher (RTH
≤
1.47 k
)).
(b) Faulty thermistor connection (the thermistor may be open or short-circuited).
If (a) and (b) are detected, immediately deactivate the heat elements. Reactivate the heat
elements after the temperature of the thermal head has returned to normal.
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相關代理商/技術參數
參數描述
LTPH245D-C384-E 功能描述:打印機 76.8X38X16 384 DOTS RoHS:否 制造商:Seiko Instruments 產品:Printer 電源電壓: 每行點數:9 x 320 打印速度:52.5 cps, 80 cps 紙張寬度:112 mm
LTPH245E-C384-E 制造商:Seiko Instruments Inc (SII) 功能描述:
LTPK006EB3010/25 制造商:Nexans 功能描述:6-F I/O PLENUM ARMORED 10GIG 50UM FIBER
LTPL-C023WS57 功能描述:大功率LED - 白色 3 W Power LED 95lm Cool Wht 5000-6500K RoHS:否 制造商:Cree, Inc. 照明顏色:Cool White 顏色溫度:5000 K 光通量:280 lm 顯示角:125 deg 正向電流:700 mA 正向電壓:2.9 V 安裝風格:SMD/SMT 系列:XMLBWW 封裝:Reel
LTPL-C025WS 功能描述:大功率LED - 白色 3 W Power LED 95lm Cool Wht 5000-6500K RoHS:否 制造商:Cree, Inc. 照明顏色:Cool White 顏色溫度:5000 K 光通量:280 lm 顯示角:125 deg 正向電流:700 mA 正向電壓:2.9 V 安裝風格:SMD/SMT 系列:XMLBWW 封裝:Reel
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