发明授权
- 专利标题： Developing device used in electrophotographic field and method of producing developing roller incorporated therein
- 专利标题（中）： 在电摄影领域中使用的开发装置及其生产开发滚子的方法
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申请号： US493536申请日： 1990-03-14
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公开(公告)号： US5076201A公开(公告)日： 1991-12-31
- 发明人: Yukio Nishio , Kazunori Hirose , Yasuhiro Tukui
- 申请人： Yukio Nishio , Kazunori Hirose , Yasuhiro Tukui
- 申请人地址： JPX Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JPX Kawasaki
- 优先权： JPX1-62026 19890316; JPX1-66627 19890317; JPX1-104975 19890425; JPX1-110322 19890428; JPX1-138509 19890531; JPX1-176540 19890707
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
A developing device using a one-component developer composed of colored fine sythetic resin toner particles, which device comprises a vessel for holding the developer, and a developing roller rotatably provided within the vessel in such a manner that a portion of the roller is exposed therefrom and resiliently pressed against a surface of an electrostatic latent image formation drum. The roller is formed of a conductive porous rubber material so that pore openings appear over a surface of the roller, and the pore openings have a diameter which is at most twice an average diameter of the toner particles, whereby during rotation of the roller, the toner particles are captured and held by the pore openings of the roller to form a developer layer therearound and are carried to the surface of the drum. The developing device further comprises a blade or roller member provided within the vessel and resiliently engaged with the developing roller, for regulating a thickness of the developer layer formed around the developing roller.
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