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:
Mar. 03, 2015
Filed:
Dec. 27, 2011
Fixing device, image forming apparatus incorporating same, and method for heating fixing rotary body
Kazuya Saito, Kanagawa, JP;
Masanao Ehara, Kanagawa, JP;
Tadashi Ogawa, Tokyo, JP;
Takeshi Uchitani, Kanagawa, JP;
Satoshi Ueno, Tokyo, JP;
Teppei Kawata, Kanagawa, JP;
Takamasa Hase, Tokyo, JP;
Shuutaroh Yuasa, Kanagawa, JP;
Kensuke Yamaji, Kanagawa, JP;
Kazuya Saito, Kanagawa, JP;
Masanao Ehara, Kanagawa, JP;
Tadashi Ogawa, Tokyo, JP;
Takeshi Uchitani, Kanagawa, JP;
Satoshi Ueno, Tokyo, JP;
Teppei Kawata, Kanagawa, JP;
Takamasa Hase, Tokyo, JP;
Shuutaroh Yuasa, Kanagawa, JP;
Kensuke Yamaji, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device includes an induction heater constructed of an exciting coil, a first pair of degaussing coils, and a second pair of degaussing coils. A controller turns off the exciting coil while the controller turns on one of the first pair of degaussing coils and the second pair of degaussing coils and at the same time turns off the other one of the first pair of degaussing coils and the second pair of degaussing coils, and then turns on the exciting coil for an extra time period corresponding to reserved power not supplied to the exciting coil while the exciting coil is turned off.