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:
Sep. 08, 2009
Filed:
Jul. 18, 2006
Tamaki Mashiba, Nara, JP;
Tamaki Mashiba, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A fixing apparatus includes a heating roller having a heating unit and a press roller that is in contact with the heating roller. The fixing apparatus fixes an image of developer onto a sheet holding the image by heating and supporting the sheet. The fixing apparatus comprises a first sensor for detecting radiant heat from the heating roller, a second sensor for detecting the ambient temperature of the first sensor, a determination unit for determining whether the temperature of the heating roller is abnormal or not based on an output value of the first sensor and an output value of the second sensor, and a control unit for controlling an operating state of the heating unit based on the determination result.