Fixing device including phase control and wave number control

Details Fixing device including phase control and wave number control Fixing device including phase control and wave number control

2005-02-08

2005-02-08

Grimley, Arthur T. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S069000

Reexamination Certificate

active

06853818

ABSTRACT:
A fixing device includes a fixing heater for being supplied with an AC voltage to generate heat; control means for variably controlling power of supplied electric energy to the fixing heater, wherein one cyclic period for changing the electric power comprises a plurality of waves, and the one cyclic period including a portion in which an electric power supply phase is changed and a portion in which a number of waves of the electric power supply is controlled.

REFERENCES:
patent: 3937921 (1976-02-01), Furuichi et al.
patent: 5669038 (1997-09-01), Kishimoto
patent: 5994671 (1999-11-01), Suzuki et al.
patent: 6177657 (2001-01-01), Takata
patent: 6301454 (2001-10-01), Nishida et al.
patent: 11-95611 (1999-04-01), None
patent: 2000-237162 (2000-09-01), None

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