Induction heating type of fixing device and image forming...

Electrophotography – Control of electrophotography process – Control of fixing

Reexamination Certificate

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Details

C219S619000, C399S045000, C399S334000

Reexamination Certificate

active

07139499

ABSTRACT:
An induction heating type of fixing device to fix a recording material having a toner image thereon, having a heating member, an induction coil divided into a plurality of parts, a temperature detector for detecting a temperature of the heating member, a signal generator for generating a switching signal that periodically controls permission and prohibition of energization of each of the divided induction coils, and a controller for controlling supply of a driving current to each of the divided induction coils to heat the heating member. The controller controls the energization by periodically switching the driving current to each of the divided induction coils on the basis of an energization signal that determines the permission and the inhibition of the driving currents according to a signal of temperature detected by the temperature detector, and the switching signal.

REFERENCES:
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patent: 6301454 (2001-10-01), Nishida et al.
patent: 6763206 (2004-07-01), Kinouchi et al.
patent: 6850728 (2005-02-01), Yokozeki et al.
patent: 2003/0198481 (2003-10-01), Kikuchi et al.
patent: 2005/0013622 (2005-01-01), Omoto et al.
patent: 2005/0205558 (2005-09-01), Kinouchi et al.
patent: 2005/0207773 (2005-09-01), Nakayama
patent: 2000-206813 (2000-07-01), None
patent: 2002-023557 (2002-01-01), None
patent: 2002-124369 (2002-04-01), None
patent: 2003-308956 (2003-10-01), None
patent: 2003-317923 (2003-11-01), None
patent: 2003-317924 (2003-11-01), None
patent: 2003-345170 (2003-12-01), None
English Abstract of JP2000-206813.
English Abstract of JP2002-023557.
English Abstract of JP2002-124369.

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