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. 20, 2012
Filed:
Mar. 24, 2010
Masaya Yoshihara, Fukuoka, JP;
Yasuhiro Torigoe, Saga, JP;
Fumihiro Tateno, Kumamoto, JP;
Youichi Nakamura, Saga, JP;
Masaya Yoshihara, Fukuoka, JP;
Yasuhiro Torigoe, Saga, JP;
Fumihiro Tateno, Kumamoto, JP;
Youichi Nakamura, Saga, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A heating roller performs electromagnetic induction heating, and includes a first exciting coil that heats the heating roller, a first degaussing coil that decreases magnetic fields of the first exciting coil, and a first axial direction core that guides magnetic fluxes, to make up a magnetic circuit between the first axial direction core and the heating roller. The width of a heat zone is controlled in agreement with a sheet feeding area. Thus, the capability to control a temperature increase in a non-sheet-feeding area of the heating roller is enhanced. Power can be saved during continual feeding of small recording sheets.