Heating apparatus that supplies power to excitation circuits...

Details Heating apparatus that supplies power to excitation circuits... Heating apparatus that supplies power to excitation circuits...

2006-03-21

2006-03-21

Beatty, Robert (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S334000, C219S619000

Reexamination Certificate

active

07016622

ABSTRACT:
A heating apparatus includes first and second coil members, a heat roller and an input control mechanism. The first and second coil members respectively are part of first and second excitation circuits. The heat roller generates an eddy current inside by a magnetic field generated by the first and second coil members. The input control mechanism drives the first and second excitation circuits. The input control mechanism starts driving only the first excitation circuit from a state where operations of the first and second excitation circuits are stopped. When the temperature detection mechanism detects a predetermined temperature, the input control mechanism stops supplying power to the first excitation circuit and supplies power only to the second excitation circuit, and the heat roller initiates rotating.

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