Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 18, 2008
Patent Application Number
11404594
Date Filed
April 14, 2006
Patent Primary Examiner
Patent abstract
An image forming apparatus that can maintain the accuracy of temperature control of an object to be heated within a predetermined range and avoid adverse effects of contamination of first temperature detection means. The image forming apparatus 1 has a photosensitive drum 14, a heater 901, a thermopile temperature sensor 902, a non-contact thermistor 903, and a control circuit 904. The control circuit 904 controls the heater 901 based on an output signal 902s in a case where the output signal 902s is output earlier in time than the output signal 903s, and informs of a state of the thermopile temperature sensor 902 in a case where the output signal 903s is output earlier in time than the output signal 902s.
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