发明申请
US20060193660A1 Developer-carrying member having improved transportability, a developing unit, a process cartridge and an image forming apparatus
有权
具有改进的运送能力的显影剂承载构件，显影单元，处理盒和图像形成装置
- 专利标题： Developer-carrying member having improved transportability, a developing unit, a process cartridge and an image forming apparatus
- 专利标题（中）： 具有改进的运送能力的显影剂承载构件，显影单元，处理盒和图像形成装置
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申请号： US11353119申请日： 2006-02-14
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公开(公告)号： US20060193660A1公开(公告)日： 2006-08-31
- 发明人: Tsuyoshi Imamura
- 申请人： Tsuyoshi Imamura
- 优先权： JP2005-036534 20050214; JP2006-003996 20060111
- 主分类号： G03G15/09
- IPC分类号： G03G15/09
摘要：
A developer-carrying member to transport a developer having a carrier to a developing area facing an image carrying member in an image forming apparatus includes a sleeve. The sleeve carries the developer. The surface of the sleeve has a maximum roughness Rmax of one-sixth or greater than a particle diameter of the carrier, and a surface index of 1.5 or greater. The surface index is expressed by the equation of “surface index=Rmax/(Ltotal-LL),” in which LL is a measurement-range length selected from a roughness profile of the surface of the sleeve, Ltotal is a total surface distance of the developer-carrying member in the measurement-range length LL, and Rmax is a maximum roughness of the sleeve surface, defined by a difference between a maximum roughness value and a minimum roughness value on a roughness profile of the surface of the sleeve.
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