发明授权
- 专利标题： Fixing device and image forming apparatus using interdigitated rollers
- 专利标题（中）： 固定装置和使用交错辊的成像装置
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申请号： US12801238申请日： 2010-05-28
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公开(公告)号： US08331840B2公开(公告)日： 2012-12-11
- 发明人: Yukimichi Someya , Kunihiko Tomita , Satoshi Muramatsu
- 申请人： Yukimichi Someya , Kunihiko Tomita , Satoshi Muramatsu
- 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： Harness, Dickey & Pierce, P.L.C.
- 优先权： JP2009-134065 20090603
- 主分类号： G03G15/20
- IPC分类号： G03G15/20
摘要：
In a fixing device, a first roller and a first fixing member are provided inside a loop formed by a first belt. A pressing member is pressed against the first roller and the first fixing member via the first belt. The first roller includes at least two enlarged radius portions of enlarged radius arranged axially along the first roller, at least one reduced radius portion of reduced radius sandwiched between the adjacent two enlarged radius portions in an axial direction of the first roller, and a concave portion formed by the reduced radius portion and the adjacent two enlarged radius portions sandwiching the reduced radius portion. The first fixing member is interdigitated with the first roller with play between the first fixing member and the first roller.
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