| 摘要 |
PURPOSE:To execture potential control unaffected by charging characteristic change in case of high humidity, by installing a detector for detecting humidity in an apparatus and a control means for executing potential control unaffected by change of charging characteristics of the recorder in accordance with output of the detector. CONSTITUTION:CPU2 is composed of NMOS1 chip 8 bit microcomputer (muPD 8048C). Signals for indicating high temperature and high humidity are delivered to a terminal P26 through an OR gate OR1 from a temperature detection circuit TDC and a humidity detection circuit HDC. The circuit TDC produces output only when it detects high temperature, and the circuit HDC likewise provides output only when it detects high humidity, thus permitting control unaffected by change of charging characteristics in high humidity to be executed. |
