Ricoh Company, Ltd.

Shunta Yamahori

Hiroshi Okamura

Norikazu Okada

Yuji Ieiri

Tomohide Kondoh

Yuuji Matsuda

Tomoyuki Yamashita

Junpei Hosoya

Takaaki Hirasawa

To inhibit toner bottle in which toner is remaining from being replaceable, image forming apparatus includes: bottle cover that can open/close insertion opening of toner bottle housing; locking mechanism to lock closed bottle cover; actuating mechanism including unlocking member to unlock locked bottle cover and open bottle cover, and actuator to actuate unlocking member; front cover situated in openable/closable manner in front of bottle cover to inhibit bottle cover from becoming open while front cover is closed; fault sensing unit to perform first fault sensing process in which actuator is sensed as having fault when failing to actuate unlocking member in spite of actuator being driven while image forming unit is non-operating; and condition sensing unit to sense presence of possibility that front cover is opened. Fault sensing unit is excluded from performing first fault sensing process while condition sensing unit is sensing the possibility as being present.

Image forming apparatus, fault sensing method, and non-transitory computer-readable recording medium storing fault sensing program

A power supply controlling apparatus includes a first power supply unit that supplies DC power to a load using power supplied from a commercial power supply, a power detecting unit that detects an input voltage and an input current input from the commercial power supply to the first power supply unit, and a control unit that controls the input current to be a constant current having an upper limit current value in response to the input voltage by controlling DC power supplied to the load from the first power supply unit based on the input voltage and the input current which are detected by the power detecting unit.

Power supply controlling apparatus and image forming apparatus

Growing community of inventors

Kanagawa, Japan

Shunta Yamahori