Fusing device and image forming apparatus having the same

Details Fusing device and image forming apparatus having the same Fusing device and image forming apparatus having the same

2011-05-31

2011-05-31

Gray, David M (Department: 2852)

Electrophotography

Having particular structure

Modular or displaceable

C399S328000, C347S104000

Reexamination Certificate

active

07953348

ABSTRACT:
A fusing device of an image forming apparatus which applies principles of leverage, and an image forming apparatus containing such a device. The fusing device includes a fusing unit having a heating roller and a pressure roller facing each other and which rotate together, a cover which opens and closes the fusing unit, and a pressure and release unit, one end of which is rotatably fixed to a rotating shaft, the pressure and release unit containing a member having a pressuring unit which pressures the pressure roller towards the heating roller when the cover opens and shuts, and a pressured part, which is farther from the rotating shaft than the pressuring part and which receives pressure from the cover.

REFERENCES:
patent: 4428660 (1984-01-01), Matsumoto
patent: 2003/0118382 (2003-06-01), Tomatsu
patent: 2007/0008395 (2007-01-01), Masubuchi et al.
patent: 2007/0077104 (2007-04-01), Hasegawa
patent: 1 584 779 (2005-10-01), None
patent: 1 612 619 (2006-01-01), None
patent: 7-295429 (1995-11-01), None
patent: 2001-134162 (2001-05-01), None
Search Report issued on Jan. 16, 2008 by the European Patent Office for European Patent Application No. 07111304.7-2209.

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