Fixing device and image forming apparatus

Details Fixing device and image forming apparatus Fixing device and image forming apparatus

2007-08-02

2010-02-16

Gray, David M (Department: 2852)

Electrophotography

Image formation

Fixing

C399S329000, C399S331000, C399S333000

Reexamination Certificate

active

07664447

ABSTRACT:
A fixing device includes a fixing member of which surface is deformable, a heating unit that heats the fixing member, a pressurizing unit having an endless member and a pressurizing member. The pressurizing member includes an elastic layer and presses the endless member against the fixing member to bring the endless member into pressure contact with the fixing member. The elastic layer has an apparent hardness (ASKER-C) which is larger than that at a point where an apparent hardness starts to change rapidly with respect to a rubber thickness in a load application direction.

REFERENCES:
patent: 4627813 (1986-12-01), Sasaki
patent: 2004/0151515 (2004-08-01), Nakayama
patent: 2005/0025537 (2005-02-01), Echigo et al.
patent: 2005/0078990 (2005-04-01), Shiraishi
patent: 2007/0140752 (2007-06-01), Yamamoto et al.
patent: 2007/0223976 (2007-09-01), Yagi et al.
patent: 63-36283 (1988-02-01), None
patent: 3298354 (2002-04-01), None
patent: 2005-164721 (2005-06-01), None
patent: 3829695 (2006-07-01), None
U.S. Appl. No. 11/832,869, filed Aug. 2, 2007, Yagi, et al.

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