发明名称 |
Developing device, process cartridge, image forming apparatus and a method for determining the remaining amount of developer |
摘要 |
A developing device for developing an electrostatic latent image formed on an electrophotographic photosensitive member, the developing device being usable with a main assembly of an electrophotograhic image forming apparatus, the developing device includes a developing member for supplying a developer to the electrophotographic photosensitive member for developing the electrostatic latent image formed on the electrophotographic photosensitive member; a first electrode provided opposed to the developing member; a second electrode disposed such that at least a lower end thereof takes a position lower than the first electrode when the developing device is mounted to the main assembly of the electrophotographic image forming apparatus; wherein an electric signal is generated in accordance with the electrostatic capacity between the first electrode and second electrode when the first electrode or second electrode is supplied with a voltage from the main assembly of the electrophotographic image forming apparatus, and is measured by the main assembly of the electrophotographic image forming apparatus to detect a remaining amount of the developer. <IMAGE> |
申请公布号 |
EP1143305(A1) |
申请公布日期 |
2001.10.10 |
申请号 |
EP20010303226 |
申请日期 |
2001.04.05 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
MATSUMOTO, HIDEKI;SHOJI, TAKEO;OGUMA, TORU;SAKURAI, KAZUSHIGE;KARAKAMA, TOSHIYUKI;KOJIMA, KATSUHIRO |
分类号 |
G01F23/26;G03G15/08;G03G21/18 |
主分类号 |
G01F23/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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