Fixing device, and image forming apparatus provided with the...

Details Fixing device, and image forming apparatus provided with the... Fixing device, and image forming apparatus provided with the...

2008-05-16

2010-02-16

Gray, David M (Department: 2852)

Electrophotography

Image formation

Fixing

C399S330000, C399S331000, C219S216000

Reexamination Certificate

active

07664452

ABSTRACT:
A fixing device includes: a fixing roller; a support roller arranged apart from the fixing roller; an endless fixing belt wound around the fixing roller and the support roller; a pressing roller for applying a pressure force to the fixing roller while the fixing belt being sandwiched between the fixing roller and the pressing roller; a nip extending member arranged on an upstream of the fixing roller and on an inner side of the fixing belt and having a pressing surface for pressing the fixing belt; and a variable mechanism for changing a state of a pressure applied to the fixing belt by the nip extending member.

REFERENCES:
patent: 7392006 (2008-06-01), Kameda et al.
patent: 2006/0245800 (2006-11-01), Fujino
patent: 2007/0059060 (2007-03-01), Kameda et al.
patent: 2008/0131179 (2008-06-01), Tsunoda
patent: 1932684 (2007-03-01), None
patent: 2004-77871 (2004-03-01), None

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