Fixing unit and image forming apparatus having the same

Details Fixing unit and image forming apparatus having the same Fixing unit and image forming apparatus having the same

2008-09-10

2011-12-06

Gray, David (Department: 2852)

Electrophotography

Image formation

Fixing

C399S122000, C399S328000, C399S330000, C399S331000

Reexamination Certificate

active

08073375

ABSTRACT:
A fixing unit where an operating force for releasing a nip can be reduced with a small-sized configuration. The fixing unit has a heating roller including a heating element, a pressure belt, pressure arms, pressure springs, and nip load releasing units. The pressure belt is supported in an intermediate position between the pressure arms3. One end portions of the pressure arms are brought into contact with the pressure springs respectively. The other end portions of the pressure arms are brought into contact with the nip load releasing units respectively. When a load applied to the pressure belt is released by the nip load releasing units, the other end portions of the pressure arms move away from the heating roller.

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