Invention Grant
- Patent Title: Power supply apparatus and image forming apparatus
- Patent Title (中): 电源装置和图像形成装置
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Application No.: US14546588Application Date: 2014-11-18
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Publication No.: US09106148B2Publication Date: 2015-08-11
- Inventor: Nobuyuki Uchiyama
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2013-245244 20131127
- Main IPC: G03G15/00
- IPC: G03G15/00 ; H02M3/338 ; H02M1/08 ; H02M1/00

Abstract:
The power supply apparatus includes a transformer having primary and secondary sides, a switching element, a feedback unit, a conversion unit that converts a current flowing in a primary winding of the transformer into a voltage, a control unit that controls operation of the switching element, a voltage switching unit that increases the voltage output from the conversion unit and feeds the increased voltage to the control unit when a continuous oscillation state is transited to an intermittent oscillation state. The voltage switching unit switches the voltage of the power supply that is input into the control unit to be higher when the continuous oscillation state is transited to the intermittent oscillation state.
Public/Granted literature
- US20150147080A1 POWER SUPPLY APPARATUS AND IMAGE FORMING APPARATUS Public/Granted day:2015-05-28
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