发明授权
- 专利标题： Image forming apparatus capable of temporarily breaking the contact between the developer and the photosensitive drum with use of electric field
- 专利标题（中）： 能够利用电场临时断开显影剂和感光鼓之间的接触的图像形成装置
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申请号： US989030申请日： 1997-12-11
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公开(公告)号： US05999777A公开(公告)日： 1999-12-07
- 发明人: Koji Masuda , Yuji Sakemi , Takao Ogata , Kazuhiro Hasegawa
- 申请人： Koji Masuda , Yuji Sakemi , Takao Ogata , Kazuhiro Hasegawa
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX8-351855 19961211; JPX8-351856 19961211
- 主分类号： G03G15/01
- IPC分类号： G03G15/01 ; G03G15/06
摘要：
An image forming apparatus includes an image bearing member for bearing an electrostatic latent image; a first developing device for developing the electrostatic latent image on the image bearing member; a second developing device, faced to the image bearing member and having a movable developer carrying member for carrying toner and carrier, for effecting development after a first developed image provided by the first developing device passes through a position where the developer carrying member is faced to the image bearing member; and a preventing device for forming an alternating electric field between the developer carrying member and the image bearing member, while the second developing device is at reset to prevent the carrier of the second developing device from rubbing the first developed image.
公开/授权文献
- US5474932A Intestine colonizing strains of lactobacilli 公开/授权日：1995-12-12
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