发明名称 |
Image forming apparatus with charging member supplied with first and second DC voltages of opposite polarities |
摘要 |
An image forming apparatus includes an image bearing member; a charging member for charging the image bearing member at a charging position, the charging member being contactable to the image bearing member; wherein the charging member is adapted to be supplied with a first DC voltage of a predetermined polarity for forming an image on the image bearing member and contains ion conduction material, and wherein the charging member is adapted to be supplied with a second voltage of a polarity opposite from the predetermined polarity when such an area of the image bearing member as is going to a non-image area of the image bearing member is at the charging position.
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申请公布号 |
US5678136(A) |
申请公布日期 |
1997.10.14 |
申请号 |
US19950503932 |
申请日期 |
1995.07.19 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
WATANABE, OSAMU;KUME, NOBUYUKI;MATSUMOTO, HIROSHI;DEN, SORIN |
分类号 |
G03G15/02;(IPC1-7):G03G15/00 |
主分类号 |
G03G15/02 |
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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