Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 8, 2009
Patent Application Number
11488129
Date Filed
July 18, 2006
Patent Primary Examiner
Patent 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.
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