Belt nip type fixing device for image forming apparatus that...

Details Belt nip type fixing device for image forming apparatus that... Belt nip type fixing device for image forming apparatus that...

2006-06-15

2009-12-29

Gray, David M (Department: 2852)

Electrophotography

Image formation

Fixing

C399S328000

Reexamination Certificate

active

07639978

ABSTRACT:
A fixing device including: a heating roller; a pressurizing roller, pressed against the heating roller; a belt extension member, arranged on an upstream side of a medium delivery direction with respect to the pressurizing roller; a belt, wound around outer peripheries of the pressurizing roller and the belt extension member, and moving while forming a fixing nip portion between the heating roller and the belt; and a member, moving the belt extension member rotationally to vary a winding amount of the belt around the heating roller.

REFERENCES:
patent: 2005/0220466 (2005-10-01), Takahashi et al.
patent: 05-150679 (1993-06-01), None

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