Image heating apparatus

Details Image heating apparatus Image heating apparatus

2011-08-02

2011-08-02

Gray, David M (Department: 2852)

Electrophotography

Image formation

Fixing

Reexamination Certificate

active

07991337

ABSTRACT:
An image heating apparatus of electromagnetic induction heating-type capable of providing a proper relative heat-generation distance with a magnetic flux generation member even when the magnetic flux generation member is bent by its own weight or thermally deformed includes at least an exciting coil, a holder for holding the exciting coil, and a rotatable fixation roller for generating heat by magnetic flux from the exciting coil to heat a material to be heated. The holder has an outer diameter φd1at a central portion and an outer diameter φd2at an end portion in a longitudinal direction of the holder perpendicular to a conveyance direction of the material to be heated. The outer diameters φd1and φd2satisfies: φd1<φd2.

REFERENCES:
patent: 5822669 (1998-10-01), Okabayashi et al.
patent: 6097926 (2000-08-01), Takagi et al.
patent: 6687481 (2004-02-01), Watanabe et al.
patent: 7099616 (2006-08-01), Kato et al.
patent: 2006/0081614 (2006-04-01), Nami et al.
patent: 10-74009 (1998-03-01), None

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