发明授权
- 专利标题: Developing device for an image forming apparatus
- 专利标题(中): 用于图像形成装置的显影装置
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申请号: US365080申请日: 1994-12-28
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公开(公告)号: US5552870A公开(公告)日: 1996-09-03
- 发明人: Eisaku Murakami , Kazuhiro Yuasa , Shuichi Endoh , Iwao Matsumae , Yoshiaki Tanaka , Hiroshi Hosokawa , Mugijiroh Uno , Hiroshi Saitoh , Eiji Takenaka , Toshihiro Sugiyama , Tetsuo Yamanaka , Satoru Komatsubara
- 申请人: Eisaku Murakami , Kazuhiro Yuasa , Shuichi Endoh , Iwao Matsumae , Yoshiaki Tanaka , Hiroshi Hosokawa , Mugijiroh Uno , Hiroshi Saitoh , Eiji Takenaka , Toshihiro Sugiyama , Tetsuo Yamanaka , Satoru Komatsubara
- 申请人地址: JPX 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: JPX Tokyo
- 优先权: JPX5-335004 19931228; JPX5-338674 19931228
- 主分类号: G03G15/08
- IPC分类号: G03G15/08 ; G03G15/06
摘要:
A developing device for an image forming apparatus and using a single component type developer, i.e., toner, has a developing roller, a doctor blade, and an elastic intermediae roller. The developing roller and intermediate roller contact each other and rotate in the same directions such that they move in opposite directions at the position where they contact each other. The developing roller is provide with a surface roughness of Rz 10 .mu.m or less in terms of ten-point mean value as prescribed by JIS (Japanese Industrial Standards) in order to deposit an adequate charge on toner.