印画制御装置

Print control system

Abstract

【課題】発熱抵抗体の温度検知回路の異常を検出することが可能な印画制御装置を提供する。 【解決手段】本発明の印画制御装置は、各々が発熱素子と温度検知素子とを兼ねる複数の発熱抵抗体100、およびこれを電流駆動する発熱駆動回路を備えるサーマルヘッドと、第1の発熱抵抗体100(A)に直列に接続される固定抵抗体122(A)に流れる電流を電圧値に変換して第1の発熱抵抗体の温度値を検知する第1の温度検知回路と、第2の発熱抵抗体100(B)に直列に接続される固定抵抗体122(B)に流れる電流を電圧値に変換して第2の発熱抵抗体の温度値を検知する第2の温度検知回路と、第1の温度検知回路での温度検知時において、第1の温度検知回路と第2の温度検知回路とが並列に接続されているときに、第1の温度検知回路の電圧値と第2の温度検知回路の電圧値とを比較し、これらの電圧値の差が所定の範囲内にあるか否かを検出する比較回路とを備える。 【選択図】 図1
PROBLEM TO BE SOLVED: To provide a print control system capable of detecting the abnormality of the temperature detection circuit of a heating resistor.SOLUTION: The print control system includes a thermal head which includes a plurality of heating resistors 100 each of which serves as a heating element and a temperature detection element and a heating drive circuit for driving the heating resistors with current, the first temperature detection circuit for detecting the temperature value of the first heating resistor by converting the current flowing through a fixed resistor 122 (A) connected to the first heating resistor 100 (A) in series into a voltage value, the second temperature detection circuit for detecting the temperature value of the second heating resistor by converting the current flowing through the fixed resistor 122 (B) connected to the second heating resistor 100 (B) in series into a voltage value, and a comparison circuit by which the voltage values of the first and second temperature detection circuits are compared mutually when the first and second temperature detection circuits are connected in series when detecting the temperature in the first temperature detection circuit, and by which it is detected whether the difference between the voltage values is in the predetermined range.

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Patent Citations (6)

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    JP-2002211025-AJuly 31, 2002Cyber Graphics Kk, サイバーグラフィックス株式会社印刷制御装置
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NO-Patent Citations (0)

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    KR-101529648-B1June 22, 2015주식회사 콜러노비타control method for instant heating device of bidet