Fixing device including heating roller and pressure roller

Details Fixing device including heating roller and pressure roller Fixing device including heating roller and pressure roller

2008-01-29

2008-01-29

Royer, William J. (Department: 2852)

Electrophotography

Image formation

Fixing

C399S333000

Reexamination Certificate

active

11171434

ABSTRACT:
A fixing device wherein supposing that the total load given to a heating roller and a pressure roller is W (kgf) and the area of the pressure contact portion of the heating roller with respect to the pressure roller (nip area) is S (cm2), the nip pressure (=W/S) is 2.7 kgf/cm2or more and the length of the pressure contact portion in the direction parallel to the direction of conveyance of a recording material is defined to be 14 mm or more.

REFERENCES:
patent: 6009300 (1999-12-01), Kagawa et al.
patent: 6101346 (2000-08-01), Arakawa
patent: 6438348 (2002-08-01), Kobaru et al.
patent: 6728507 (2004-04-01), Yamamoto et al.
patent: 6985689 (2006-01-01), Nanataki et al.

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