Fixing device

Details Fixing device Fixing device

2004-10-06

2008-05-06

Brase, Sandra L. (Department: 2852)

Electrophotography

Image formation

Fixing

C399S328000

Reexamination Certificate

active

07369804

ABSTRACT:
A fixing apparatus can prevent an excessive rise in temperature of a paper non-passage area due to diverted flow of magnetic flux from a paper passage area of a heat-producing element to a paper non-passage area thereof has a small configuration. A center core is rotated by a rotation section, bringing cutaway parts to a magnetic path masking position, and the degree of magnetic coupling between the center core and a heat-producing roller is weakened, suppressing an excessive rise in temperature of paper non-passage areas of the heat-producing roller. With this fixing apparatus, switching of the intensity of magnetic coupling between the center core and heat-producing roller can be performed simply by rotating the center core. Also, with this fixing apparatus, it is not necessary for magnetism suppressing elements to be provided as separate members, enabling the configuration to be made simpler and less expensive.

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patent: 6963718 (2005-11-01), Sekiguchi
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patent: 2005/0199613 (2005-09-01), Samei et al.
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patent: 2006/0099001 (2006-05-01), Asakura et al.
patent: 10-074009 (1998-03-01), None
patent: 2000-162913 (2000-06-01), None
patent: 2000-181258 (2000-06-01), None
patent: 2001-125407 (2001-05-01), None
patent: 2002-083676 (2002-03-01), None
patent: 2003-107941 (2003-04-01), None
patent: 2003-123957 (2003-04-01), None
patent: 2003-123961 (2003-04-01), None
English Language Abstract of JP 10-074009.
English Language Abstract of JP 2003-123961.
English Language Abstract of JP 2003-123957.
English Language Abstract of JP 2002-083676.
English Language Abstract of JP 2000-181258.
English Language Abstract of JP 2003-107941.
English Language Abstract of JP 2000-162913.
U.S. Appl. No. 10/575,356 to Yasuda et al., filed Apr. 11, 2006.
U.S. Appl. No. 10/565,270 to Yasuda et al., filed Apr. 11, 2006.
U.S. Appl. No. 10/576,307 to Samei et al., filed Apr. 11, 2006.
English language Abstract and partial translation of JP 2001-125407.

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