Heating device, fixing device and image forming device

Details Heating device, fixing device and image forming device Heating device, fixing device and image forming device

2009-04-24

2011-10-18

Lee, Susan (Department: 2884)

Electrophotography

Image formation

Fixing

C219S619000

Reexamination Certificate

active

08041278

ABSTRACT:
A heating device includes: a magnetic field generating unit that generates a magnetic field; a heat-generating member that is disposed so as to face the magnetic field generating unit, and generates heat due to electromagnetic induction of the magnetic field, and having a heat-generating layer of a thickness that is thinner than a skin depth; and a temperature-sensitive member that is disposed so as to face a side of the heat-generating member opposite a side at which the magnetic field generating unit is located, a magnetic permeability of the temperature-sensitive member starting to decrease continuously from a magnetic permeability change start temperature that is in a temperature region that is greater than or equal to a set temperature and less than or equal to a heat-resistant temperature. A convex portion, that projects-out toward the heat-generating member from a surface that faces the heat-generating member, is provided at the temperature-sensitive member.

REFERENCES:
patent: 7194234 (2007-03-01), Katakabe et al.
patent: 2009/0238593 (2009-09-01), Kinouchi et al.
patent: 2009/0290915 (2009-11-01), Baba
patent: 2009/0290916 (2009-11-01), Baba
patent: 11-288190 (1999-10-01), None
patent: 2000-30850 (2000-01-01), None
patent: 3527442 (2004-02-01), None

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