发明名称 |
Image forming apparatus with developing recovery device |
摘要 |
Cleaning effectiveness is improved, and inadequate charging of the photosensitive member due to soiling of the charging brush as well as image noise such as background fog are suppressed by a developing device capable of recovering residual toner regardless of the toner charge polarity. In an image forming apparatus provided with a developing device including a developing sleeve for developing an electrostatic latent image on photosensitive member via toner and recovering residual toner from the surface of photosensitive member, a power unit is provided for forming a direct current electric field between photosensitive member and developing sleeve during developing, and forming alternating current electric fields between photosensitive member and developing sleeve 16 during cleaning of residual toners.
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申请公布号 |
US5864736(A) |
申请公布日期 |
1999.01.26 |
申请号 |
US19970790788 |
申请日期 |
1997.01.30 |
申请人 |
MINOLTA CO., LTD. |
发明人 |
SHIMADA, HIROKATSU;SAKURABA, TAMOTSU;KAWASAKI, AKIHIRO |
分类号 |
G03G21/10;G03G15/08;G03G21/00;(IPC1-7):G03G15/30 |
主分类号 |
G03G21/10 |
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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