The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2010
Filed:
Sep. 18, 2006
Toshitaka Semma, Yamato, JP;
Yoshihisa Kimura, Kawasaki, JP;
Tetsuya Yano, Yokohama, JP;
Norio Muraishi, Machida, JP;
Naoki Sato, Yokohama, JP;
Kazuhito Kishi, Yokohama, JP;
Toshitaka Semma, Yamato, JP;
Yoshihisa Kimura, Kawasaki, JP;
Tetsuya Yano, Yokohama, JP;
Norio Muraishi, Machida, JP;
Naoki Sato, Yokohama, JP;
Kazuhito Kishi, Yokohama, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An image forming apparatus having (1) a main power supply unit (PSU), which converts an AC power source into an AC power and a first DC power, provides the AC power to a fusing unit, and provides the first DC power to a plurality of DC-powered units in the image forming apparatus, (2) a supplemental power supply unit, which accumulates the AC power source and provides a second DC power to the plurality of DC-powered units for a predetermined period, and (3) a controller, which increases or decreases the AC power to be provided to the fusing unit and selects the DC power source from the main PSU and the supplemental PSU by detecting that the supplemental PSU can provide the DC power to the plurality of DC-powered units or not. When the supplemental power supply unit can provide DC power to the Plurality of DC-powered units, the controller increases the AC power from the main power supply unit to the fusing unit and shortens the recovery time.