发明授权
US09026025B2 Fixing device including heating span adjuster, image forming apparatus, and fixing method
有权
固定装置包括加热跨度调节器，成像装置和固定方法
- 专利标题： Fixing device including heating span adjuster, image forming apparatus, and fixing method
- 专利标题（中）： 固定装置包括加热跨度调节器，成像装置和固定方法
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申请号： US14269314申请日： 2014-05-05
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公开(公告)号： US09026025B2公开(公告)日： 2015-05-05
- 发明人: Ryuuichi Mimbu , Masaaki Yoshikawa , Takayuki Seki , Takeshi Yamamoto , Yutaka Ikebuchi , Takuya Seshita , Shuntaro Tamaki , Hajime Gotoh , Takahiro Imada , Kazuya Saito , Toshihiko Shimokawa , Shuutaroh Yuasa , Kensuke Yamaji , Akira Suzuki , Hiroshi Yoshinaga , Yuji Arai
- 申请人： Ryuuichi Mimbu , Masaaki Yoshikawa , Takayuki Seki , Takeshi Yamamoto , Yutaka Ikebuchi , Takuya Seshita , Shuntaro Tamaki , Hajime Gotoh , Takahiro Imada , Kazuya Saito , Toshihiko Shimokawa , Shuutaroh Yuasa , Kensuke Yamaji , Akira Suzuki , Hiroshi Yoshinaga , Yuji Arai
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2013-104181 20130516
- 主分类号： G03G15/20
- IPC分类号： G03G15/20
摘要：
A fixing device includes a fixing rotator heated by a heater and a pressing rotator to press against the fixing rotator to form a fixing nip therebetween. A heating span adjuster, interposed between the heater and the fixing rotator, is movable in a circumferential direction of the fixing rotator. The heating span adjuster moves to a retracted position where the heating span adjuster allows the heater to heat the fixing rotator in an increased axial heating span of the fixing rotator after the heater starts heating the fixing rotator until the fixing rotator and the pressing rotator start conveying a recording medium through the fixing nip. The heating span adjuster at the retracted position is outboard from a circumferential, direct heating span of the fixing rotator where the heater heats the fixing rotator directly.