发明授权
- 专利标题： Fixing device and image forming apparatus incorporating same
- 专利标题（中）： 固定装置和包含其的图像形成装置
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申请号： US13731432申请日： 2012-12-31
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公开(公告)号： US09235177B2公开(公告)日： 2016-01-12
- 发明人: Takuya Seshita , Masahiko Satoh , Masaaki Yoshikawa , Hiroshi Yoshinaga , Kenji Ishii , Tadashi Ogawa , Takahiro Imada , Hiromasa Takagi , Kazuya Saito , Naoki Iwaya , Toshihiko Shimokawa , Kensuke Yamaji , Teppei Kawata , Takamasa Hase , Shuutaroh Yuasa , Takeshi Uchitani , Arinobu Yoshiura , Hajime Gotoh , Akira Suzuki , Ryota Yamashina , Yasunori Ishigaya
- 申请人： Takuya Seshita , Masahiko Satoh , Masaaki Yoshikawa , Hiroshi Yoshinaga , Kenji Ishii , Tadashi Ogawa , Takahiro Imada , Hiromasa Takagi , Kazuya Saito , Naoki Iwaya , Toshihiko Shimokawa , Kensuke Yamaji , Teppei Kawata , Takamasa Hase , Shuutaroh Yuasa , Takeshi Uchitani , Arinobu Yoshiura , Hajime Gotoh , Akira Suzuki , Ryota Yamashina , Yasunori Ishigaya
- 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： JP2012-016934 20120130; JP2012-251372 20121115
- 主分类号： G03G15/20
- IPC分类号： G03G15/20
摘要：
A fixing device comprises a rotatable fixing member to apply heat to a recording medium bearing an unfixed image thereon, a heat source to heat the fixing member, and a rotatable pressing member pressing against the fixing member forming a nip therebetween. A driving source rotates and drives the fixing member and the pressing member. An overheat safety device has a relay to open and close a power supply path connected to the heat source. A temperature detector is connected to both the relay and the control unit to detect temperature of the fixing member. The overheat safety device turns off the relay and cuts off power supply to the heat source when the fixing member is overheated. The fixing member is allowed to radiate heat and cool down when the temperature detected by the temperature detector is more than a prescribed level.
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