Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2007-03-13
2007-03-13
Gray, David M. (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S069000, C399S327000, C399S071000
Reexamination Certificate
active
11046836
ABSTRACT:
The image heating apparatus for heating a toner image formed on a recording material, includes a rotatable member; heating device for heating an outer peripheral surface of the rotatable member, the heating device including a heater for forming a heating nip portion in cooperation with the rotatable member; back-up device for forming a conveying nip portion in cooperation with the rotatable member, the conveying nip portion conveying the recording material; and control device for controlling a temperature of the heater and a rotation of the rotatable member; wherein the apparatus has a cleaning mode to remove toner from the heating device, wherein the control device, in the cleaning mode, starts energizing the heater to dissipate heat in a condition that the rotatable member stops and afterward stops energizing the heater, and wherein the control device rotates the rotatable member until a part which forms a heating nip portion in a peripheral direction of the rotatable member reaches the conveying nip portion. By the virtue of the present invention, it prevents stain caused by the off-set of toner the recording material in an image heating apparatus.
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Hasegawa Hiroto
Hashiguchi Shinji
Nihonyanagi Koji
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Gray David M.
Walsh Ryan D.
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