发明申请
- 专利标题: IMAGE FORMING APPARATUS
- 专利标题(中): 图像形成装置
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申请号: US12772360申请日: 2010-05-03
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公开(公告)号: US20100284706A1公开(公告)日: 2010-11-11
- 发明人: Yoshikuni Ito , Toshinori Nakayama , Yasuharu Chiyoda
- 申请人: Yoshikuni Ito , Toshinori Nakayama , Yasuharu Chiyoda
- 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
- 优先权: JP2009-114531 20090511
- 主分类号: G03G15/20
- IPC分类号: G03G15/20
摘要:
An image forming apparatus includes a rotatable image heating member for heating a toner image on a recording material in a nip; a rotatable pressing member for pressing against the image heating member to form the nip; a moving mechanism for relative movement between the heating member and the pressing member toward and away from each other; a temperature detecting member for detecting a temperature of the pressing member; cooling means for cooling the pressing member; rotational speed changing means for changing a rotational speed of the pressing member; and an executing portion for executing, when the temperature of the pressing member reaches an upper limit temperature during execution of an image formation job of continuously forming the images, a cooling mode for cooling the pressing member by the cooling means in a state that the pressing member and the heating member are spaced from each other while rotating the pressing member at a second rotational speed higher than a first rotational speed which is a speed during the execution of the job.