Method and apparatus for selective fuser rolling cooling

Details Method and apparatus for selective fuser rolling cooling Method and apparatus for selective fuser rolling cooling

2006-05-30

2006-05-30

Ngo, Hoang (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S070000, C399S334000, C219S216000

Reexamination Certificate

active

07054572

ABSTRACT:
The present invention is in the field of electrophotographic printers and copiers. More specifically this invention relates to the fuser apparatus used to fuse an image on a receiving sheet. According to just one aspect of the invention, an apparatus and process for fixing toner images to a receiving sheet is provided. The apparatus may include a fuser having a run condition and an idle condition, the fuser having a fuser roller, a fuser roller heater, and a fuser temperature sensor which inputs to a logic and control system which controls the heating of the fuser roller heater. The fuser roller may be cooled during or after the idle condition, prior to the first receiving sheet entering the fuser. The fuser roller has end portions and a middle portion, and the middle portion may be cooled relative to said end portions. Additional aspects and representative embodiments are described herein.

REFERENCES:
patent: 4963943 (1990-10-01), Tamary
patent: 5787321 (1998-07-01), Nishikawa et al.
patent: 5991565 (1999-11-01), Hanyu et al.
patent: 6532348 (2003-03-01), Allmendinger
patent: 6539185 (2003-03-01), Hanyu et al.
patent: 6636718 (2003-10-01), Yura et al.

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