发明授权
US07190914B2 Image heating apparatus having heater for externally heating fixing roller
失效
图像加热装置具有用于外部加热定影辊的加热器
- 专利标题: Image heating apparatus having heater for externally heating fixing roller
- 专利标题(中): 图像加热装置具有用于外部加热定影辊的加热器
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申请号: US11046836申请日: 2005-02-01
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公开(公告)号: US07190914B2公开(公告)日: 2007-03-13
- 发明人: Koji Nihonyanagi , Hiroto Hasegawa , Shinji Hashiguchi
- 申请人: Koji Nihonyanagi , Hiroto Hasegawa , Shinji Hashiguchi
- 申请人地址: JP Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Fitzpatrick, Cella, Harper & Scinto
- 优先权: JP2004-026238 20040203; JP2005-011710 20050119
- 主分类号: G03G15/20
- IPC分类号: G03G15/20
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.
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