Heating apparatus, heating apparatus control method and...

Details Heating apparatus, heating apparatus control method and... Heating apparatus, heating apparatus control method and...

2007-07-24

2007-07-24

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

Reexamination Certificate

active

11082242

ABSTRACT:
A fixing apparatus according to one aspect of the present invention includes a non-contact temperature detecting element81allocated in non-contact with a heat roller, the sensing element detecting a temperature of the heat roller. The non-contact temperature sensing section81includes a thermopile P which detects a target temperature Pt of a heat roller2, a temperature element CPU100which estimates an ambient temperature at the periphery of the thermopile P and computes an estimated ambient temperature SQt, and a thermister Q which detects an ambient temperature Qt at the periphery of the thermopile and outputs the ambient temperature Qt at an output voltage of a predetermined rate with respect to a total output voltage value corresponding to the estimated ambient temperature SQt.

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