Fixing device for use in an image forming device

Details Fixing device for use in an image forming device Fixing device for use in an image forming device

2007-10-09

2007-10-09

Chen, Sophia S. (Department: 2852)

Electrophotography

Image formation

Fixing

C219S216000, C399S122000

Reexamination Certificate

active

11258220

ABSTRACT:
A fixing roller 30, which has an internal heating device and is supported to rotate around a cylindrical shaft 40, and a pressure roller 81 whose circumferential face presses against the fixing roller 30, and which is supported to rotate around the pressure roller axle 82, are mounted in a housing 11, so that, by passing paper P to which a toner image has been transferred, a fixing process is performed on this toner image. The fixing roller 30 is mounted in the housing 11 by heat resistant bushings 50, which are fitted on both ends of the cylindrical shaft 40. Annular grooves 41 are arranged on the cylindrical shaft 40 for receiving C-shaped retaining rings 70, for preventing the heat resistant bushings 50 from coming off. The heat resistant bushings 50 and the retaining rings 70 engage with each other to rotate in unison around the cylindrical shaft 40.

REFERENCES:
patent: 5659848 (1997-08-01), Jeon
patent: 7009158 (2006-03-01), Sekiguchi et al.
patent: 2002/0124788 (2002-09-01), Hobdy
patent: 05-312211 (1993-11-01), None

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