Fixing apparatus and image forming apparatus including the same

Details Fixing apparatus and image forming apparatus including the same Fixing apparatus and image forming apparatus including the same

2007-03-21

2010-02-16

Gray, David M (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S070000

Reexamination Certificate

active

07664417

ABSTRACT:
A fixing apparatus and an image forming apparatus of the present invention are arranged so that a fixing control section causes a fixing roller to additionally rotate so that the additional rotation corresponds to a driving delay time also after turning OFF an external heating roller heater when shifting from a temperature raising step in which surface temperature of the fixing roller is raised so as to be equal to a preset fixing temperature to a standby mode and when turning OFF the external heating roller heater and stopping the fixing roller. As a result, it is possible to provide a fixing apparatus and an image forming apparatus in which a surface of a fixing roller is free from deterioration or breakage caused by local heating carried out by an external heating roller.

REFERENCES:
patent: 5708920 (1998-01-01), Ohnishi et al.
patent: 6411785 (2002-06-01), Ogawahara et al.
patent: 2005/0074252 (2005-04-01), Hirst et al.
patent: 2007/0212093 (2007-09-01), Maeda et al.
patent: 08-190294 (1996-07-01), None
patent: 2002-043026 (2002-02-01), None
patent: 2002-43026 (2002-02-01), None

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