Invention Grant
US08837975B2 Power supply circuit, image forming apparatus incorporating same, and power supply method to supply voltage to image forming apparatus
有权
电源电路，并入其的图像形成装置以及向图像形成装置供给电压的供电方法
- Patent Title: Power supply circuit, image forming apparatus incorporating same, and power supply method to supply voltage to image forming apparatus
- Patent Title (中): 电源电路，并入其的图像形成装置以及向图像形成装置供给电压的供电方法
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Application No.: US13693162Application Date: 2012-12-04
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Publication No.: US08837975B2Publication Date: 2014-09-16
- Inventor: Kunihiro Komai , Akira Yashiro , Motohiro Kawanabe , Takayuki Kawamoto
- Applicant: Kunihiro Komai , Akira Yashiro , Motohiro Kawanabe , Takayuki Kawamoto
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2011-281749 20111222
- Main IPC: G03G15/00
- IPC: G03G15/00
Abstract:
A power supply circuit includes a voltage regulator to which a first high voltage is supplied, to operate at constant voltage and regulate the supplied first high voltage, and a first rectifier circuit to which the first high voltage is supplied, connected in parallel to the voltage regulator, to rectify the supplied first high voltage for output as a first DC voltage. When the first high voltage is a pseudo-alternating-current (AC) voltage consisting of two types of high voltages that alternate, the voltage regulator regulates each of the two different types of the voltages to output a desired pseudo-AC voltage.
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