Control of overheating in an image fixing assembly

Details Control of overheating in an image fixing assembly Control of overheating in an image fixing assembly

2011-06-07

2011-06-07

Porta, David P (Department: 2884)

Electrophotography

Control of electrophotography process

Control of fixing

C399S033000, C399S122000

Reexamination Certificate

active

07957661

ABSTRACT:
An image fixing assembly includes a heating unit having a heating element and a fusing member enclosing the heating element; a backup member; and a heat conducting member. The fusing member is configured to rotate around the heating element. Further, the fusing member is capable of being heated by the heating element. The backup member is abuttingly coupled to the fusing member for configuring a nip portion therebetween, and is capable of pressing media sheets against the fusing member, when the media sheets pass through the nip portion. The heat conducting member is capable of retractably coupling to one of the fusing member and the backup member for enabling flow of heat between the one of the fusing member and the backup member, and the heat conducting member, for reducing a thermal gradient. Further disclosed is a method for fixing images on the media sheets using the image fixing assembly.

REFERENCES:
patent: 5669039 (1997-09-01), Ohtsuka
patent: 6185389 (2001-02-01), Bartley
patent: 6304731 (2001-10-01), Able

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