发明名称 POWER CONTROL DEVICE AND IMAGE FORMING APPARATUS EMPLOYING POWER CONTROL DEVICE
摘要 <P>PROBLEM TO BE SOLVED: To provide a power control device and an image forming apparatus employing the power control device capable of exactly detecting (determining) a malfunction of a relay and a semiconductor device (discharge transistor) and the content of the malfunction. <P>SOLUTION: The power control device is equipped: with a relay S2 and a discharge transistor S3 connected in series to an electric power load; bias transistors S1 and D10 connected between the relay S2 and the discharge transistor S3 and supplying voltage to the discharge transistor S3; and a CPU 2 determining an occurrence of a malfunction in at least one of the relay S2 and the discharge transistor S3. <P>COPYRIGHT: (C)2009,JPO&INPIT
申请公布号 JP2008257190(A) 申请公布日期 2008.10.23
申请号 JP20080004019 申请日期 2008.01.11
申请人 RICOH CO LTD 发明人 TAKAHASHI TSUNEHIDE;SATO NAOMOTO;KIKUCHI HIDEO
分类号 G03G21/00;G03G15/20 主分类号 G03G21/00
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