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:
Dec. 14, 2010
Filed:
Sep. 10, 2007
Keiichi Sanada, Kanagawa, JP;
Takeshi Sano, Kanagawa, JP;
Yoshihisa Ashikawa, Kanagawa, JP;
Naoki Sato, Kanagawa, JP;
Tomonori Maekawa, Kanagawa, JP;
Keiichi Sanada, Kanagawa, JP;
Takeshi Sano, Kanagawa, JP;
Yoshihisa Ashikawa, Kanagawa, JP;
Naoki Sato, Kanagawa, JP;
Tomonori Maekawa, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A plurality of heating units generates a heat by an alternating-current power supplied from a corresponding alternating-current power supply unit through a corresponding input terminal and supplying the heat to a fixing unit that fixes a toner image transformed on a recording paper by heating. A plurality of power control units controls the alternating-current power to a corresponding heating unit. A plurality of detecting units detects a reference phase of waveform of the alternating-current power. A control unit individually controls the power control units based on detected signals output from the detecting units.