发明申请
- 专利标题: DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
- 专利标题(中): 开发设备和图像形成装置
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申请号: US12685840申请日: 2010-01-12
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公开(公告)号: US20100209126A1公开(公告)日: 2010-08-19
- 发明人: Takeshi AOKI , Katsumi OKAMOTO , Takatomo FUKUMOTO
- 申请人: Takeshi AOKI , Katsumi OKAMOTO , Takatomo FUKUMOTO
- 申请人地址: JP Tokyo
- 专利权人: SEIKO EPSON CORPORATION
- 当前专利权人: SEIKO EPSON CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2009-034980 20090218
- 主分类号: G03G15/08
- IPC分类号: G03G15/08
摘要:
A developing device includes: a developing roller on the surface of which intersecting inclined grooves are formed by rolling working; and a seal member which comes into contact with the developing roller, wherein ridge portions of a convex portion surrounded by the inclined grooves of the surface of the developing roller are formed such that rotational resistance due to the contact of the seal member on the downstream side of a rotation direction opposite to a rotation direction of the developing roller at the time of development is larger than rotational resistance due to the contact of the seal member on the downstream side of a rotation direction of the developing roller at the time of development, and at the time of refreshing of the seal member, the developing roller is rotated in the opposite direction to a direction at the time of development.
公开/授权文献
- US07974549B2 Developing device and image forming apparatus 公开/授权日:2011-07-05