发明授权
US07835680B2 Image forming apparatus with induction heating coil unit and a magnetism adjusting member with a closed frame shape
有权
具有感应加热线圈单元的图像形成装置和具有闭合框架形状的磁调节构件
- 专利标题： Image forming apparatus with induction heating coil unit and a magnetism adjusting member with a closed frame shape
- 专利标题（中）： 具有感应加热线圈单元的图像形成装置和具有闭合框架形状的磁调节构件
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申请号： US12344940申请日： 2008-12-29
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公开(公告)号： US07835680B2公开(公告)日： 2010-11-16
- 发明人: Yuzuru Nanjo , Eiji Nakajima , Akihiro Kondo , Naoyuki Ishida , Syoukou Gon , Kenichi Kasama
- 申请人： Yuzuru Nanjo , Eiji Nakajima , Akihiro Kondo , Naoyuki Ishida , Syoukou Gon , Kenichi Kasama
- 申请人地址： JP
- 专利权人： Kyocera Mita Corporation
- 当前专利权人： Kyocera Mita Corporation
- 当前专利权人地址： JP
- 代理商 Gerald E. Hespos; Michael J. Porco
- 优先权： JP2008-000433 20080107; JP2008-000686 20080107
- 主分类号： G03G15/20
- IPC分类号： G03G15/20
摘要：
A fixing unit (14) of an image forming apparatus (1) includes a heating member (48) having a first area where a sheet does not come into contact with the heating member (48) and a second area where the sheet comes into contact with the heating member (48). The fixing unit (14) further includes a coil (52) forming a magnetic field, cores (54,56) forming a magnetic path near the coil (52), a nonmagnetic magnetism adjusting member (90) arranged on the magnetic path and having a closed frame, and a switcher (58,60) capable of switching the magnetism adjusting member (90) between a first state where the magnetism adjusting member (90) generates an induction current resulting from the magnetic field to shield the magnetism in the first area, and a second state where the magnetism adjusting member (90) generates no induction current and the magnetism is not shielded in the first area.
公开/授权文献
- US20090175664A1 IMAGE FORMING APPARATUS 公开/授权日：2009-07-09