发明授权
US08295726B2 Fixing device, image forming apparatus, and method for controlling fixing device
有权
固定装置,图像形成装置以及用于控制定影装置的方法
- 专利标题: Fixing device, image forming apparatus, and method for controlling fixing device
- 专利标题(中): 固定装置,图像形成装置以及用于控制定影装置的方法
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申请号: US12629149申请日: 2009-12-02
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公开(公告)号: US08295726B2公开(公告)日: 2012-10-23
- 发明人: Toshiaki Kagawa , Susumu Murakami , Masashi Hirai , Atsushi Ide , Takashi Mukai
- 申请人: Toshiaki Kagawa , Susumu Murakami , Masashi Hirai , Atsushi Ide , Takashi Mukai
- 申请人地址: JP Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JP Osaka
- 代理机构: Renner, Otto, Boisselle & Sklar, LLP
- 优先权: JP2008-311200 20081205
- 主分类号: G03G15/20
- IPC分类号: G03G15/20
摘要:
In a fixing device including (i) an external heat belt which abuts against a surface of a fixing roller so as to heat the fixing roller and (ii) a cleaning member which abuts against the external heat belt, a fixing temperature, which is a surface temperature of the fixing roller during a fixing process, is set per group into which recording media to be subjected to the fixing process are divided according to their widths in a direction of a rotary axis of the fixing roller, in such a way that the fixing temperature is set to a lower temperature for a group of narrower widths. This makes it possible to prevent a reduction in releasability of the fixing roller caused by a material, which is scraped off from the external heat belt by the cleaning member and then adhered to the fixing roller, thereby preventing the high-temperature offset.