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:
Aug. 09, 2011
Filed:
Mar. 26, 2009
Syoukou Gon, Osaka, JP;
Yuzuru Nanjo, Osaka, JP;
Akihiro Kondo, Osaka, JP;
Eiji Nakajima, Osaka, JP;
Naoyuki Ishida, Osaka, JP;
Kenichi Kasama, Osaka, JP;
Tamami Asari, Osaka, JP;
Syoukou Gon, Osaka, JP;
Yuzuru Nanjo, Osaka, JP;
Akihiro Kondo, Osaka, JP;
Eiji Nakajima, Osaka, JP;
Naoyuki Ishida, Osaka, JP;
Kenichi Kasama, Osaka, JP;
Tamami Asari, Osaka, JP;
Kyocera Mita Corporation, , JP;
Abstract
An image forming apparatus includes a fixing unit fixing a toner image onto a sheet. The fixing unit includes a heating member having a sheet conveyed region that is set in accordance with the size of the sheet. The fixing unit further includes a coil generating magnetic field, a fixed core forming a magnetic path, movable cores forming a magnetic path together with the fixed core and arranged along the sheet conveyed region, a shielding member arranged on at least one movable core and shielding magnetism, and a magnetism adjustment unit rotating at least one movable core to switch the position of the shielding member between a shielding position where the shielding member is positioned inside the sheet conveyed region to shield the magnetism and a retracted position where the shielding member is positioned outside the sheet conveyed region to permit pass of the magnetism.