| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an interlock power source circuit easy to recognize an operation abnormal tendency of an electric relay and an image forming device using the circuit and to monitor the operation abnormal tendency. <P>SOLUTION: Each load is connected to an interlock switch 73 to be turned OFF/ON by interlocking with the opening/closing of a cover, a plurality of electric relays 86 and 8 to be operated by a power source line +24 V inserted with the switch 73 and a rear stage of a contact of the switch 73 and the relays 86 and 8 so that an output of the relay 86 at a front stage on the circuit may be a trigger of the relay 8 at the rear stage. When the switch 73 is turned OFF/ON by the cover opening/closing operation, the plurality of relays 86 and 8 are sequentially turned OFF/ON. <P>COPYRIGHT: (C)2003,JPO |
