发明授权
- 专利标题: Electromagnetic induction heat generating roller, heating device, and image forming apparatus
- 专利标题(中): 电磁感应发热辊,加热装置和成像装置
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申请号: US11040873申请日: 2005-01-21
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公开(公告)号: US07194234B2公开(公告)日: 2007-03-20
- 发明人: Noboru Katakabe , Masaru Imai , Keisuke Fujimoto
- 申请人: Noboru Katakabe , Masaru Imai , Keisuke Fujimoto
- 申请人地址: JP Osaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: Hamre, Schumann, Mueller & Larson, P.C.
- 优先权: JP2001-336321 20011101
- 主分类号: G03G15/20
- IPC分类号: G03G15/20
摘要:
An electromagnetic induced heating roller comprises a core member, an elastic layer, induction heating layer, and a mold release layer in this order from inside to outside. Further, a magnetic shield layer for preventing a magnetic flux from penetrating into the core member is interposed between the induction heating layer and the core member. The production of an alternating magnetic field from a magnetic field generating device, a leakage flux having penetrated through the induction heating layer is trapped by the magnetic shield layer. As a result, most of the impressed alternating magnetic flux is consumed for heating the heating layer, resulting in an improvement in the heating efficiency. A trouble is prevented which is generated by heating the bearing of the core member.