发明名称 Image heating apparatus having heater for externally heating fixing roller
摘要 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.
申请公布号 US7190914(B2) 申请公布日期 2007.03.13
申请号 US20050046836 申请日期 2005.02.01
申请人 CANON KABUSHIKI KAISHA 发明人 NIHONYANAGI KOJI;HASEGAWA HIROTO;HASHIGUCHI SHINJI
分类号 G03G15/20;G03G15/00 主分类号 G03G15/20
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