Fixing device of image forming apparatus

Details Fixing device of image forming apparatus Fixing device of image forming apparatus

2007-12-04

2007-12-04

Tran, Hoan (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C219S619000, C399S328000

Reexamination Certificate

active

11080909

ABSTRACT:
A fixing device of an image forming apparatus of the present invention enables induction heating coils for a 100 V power source to set a ratio of inductance L to load resistance R of a heat roller to L/R <35×10−6(H/Ω) and coil impedance Z (Ω) to Z<10 (Ω) and supplies a drive current at a high frequency of 40 to 70 kHz. By doing this, an eddy current generated in the heat roller is concentrated upon a metallic conductive layer by the skin effect and the heat generation efficiency of the heat roller is improved.

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