Fixing unit

Details Fixing unit Fixing unit

2005-05-03

2005-05-03

Tran, Hoan (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S067000

Reexamination Certificate

active

06889018

ABSTRACT:
A fixing device of the present invention has first and second thermistors which detect the temperatures at predetermined positions in the longitudinally direction of a heating roller, first and second coils which can increase independently the temperatures at the center and the end of the heating roller, a driving circuit which supply power alternately to the coils, first and second switching circuits which supply a predetermined power to each coil, a control unit, and a temperature detection circuit.

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