Invention Grant
- Patent Title: Power supply device, fixing device and image forming apparatus
- Patent Title (中): 电源装置，定影装置和成像装置
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Application No.: US12230298Application Date: 2008-08-27
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Publication No.: US07986894B2Publication Date: 2011-07-26
- Inventor: Tomofumi Yamashita , Hiroyuki Shinohara , Shoji Totsuka , Nobuyuki Shigeyama , Katsuaki Murata
- Applicant: Tomofumi Yamashita , Hiroyuki Shinohara , Shoji Totsuka , Nobuyuki Shigeyama , Katsuaki Murata
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, PLC
- Priority: JP2007-231637 20070906
- Main IPC: G03G15/20
- IPC: G03G15/20
Abstract:
A disclosed power supply device includes a voltage resonance circuit configured to include an output coil for boosting an input direct-current voltage to a predetermined voltage and outputting the boosted voltage to a load and also include a capacitor connected to the output coil; and a switching unit configured to be turned ON/OFF so as to control electric current supply to the output coil. An auxiliary resonance circuit is connected in parallel with the output coil so as to reduce switching losses without using a power control circuit for switching control.
Public/Granted literature
- US20090067867A1 Power supply device, fixing device and image forming apparatus Public/Granted day:2009-03-12
Information query
