Fixing device and image forming device

Details Fixing device and image forming device Fixing device and image forming device

2009-03-09

2011-12-27

Gray, David (Department: 2852)

Electrophotography

Diagnostics

Fixing

Reexamination Certificate

active

08086119

ABSTRACT:
A fixing device includes a heating rotating body that is heated by a heater and rotates, a pressurizing rotating body that is in contact with a surface portion of the heating rotating body and rotates, and that forms a fixing portion, a pressing mechanism that presses the pressurizing rotating body against the heating rotating body and that uses a plurality of springs disposed on both end portions of the pressurizing rotating body in a direction of the second rotation shaft, and a switching mechanism that switches between a first pressing state in which first combination of springs selected from among the plurality of springs are maintained and a second pressing state in which second combination of springs selected from among the plurality of springs except the first combination of the springs are maintained.

REFERENCES:
patent: 7079789 (2006-07-01), Wang
patent: 7764913 (2010-07-01), Tsunoda
patent: 2007/0019977 (2007-01-01), Sawamura et al.
patent: 06-348192 (1994-12-01), None
patent: 2004-109521 (2004-04-01), None
patent: 2007-025571 (2007-02-01), None

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