发明授权
US5132738A Image forming apparatus with cleaning mechanism for charging electrode
失效
用于充电电极的清洁机构的图像形成装置
- 专利标题: Image forming apparatus with cleaning mechanism for charging electrode
- 专利标题(中): 用于充电电极的清洁机构的图像形成装置
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申请号: US789547申请日: 1991-11-08
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公开(公告)号: US5132738A公开(公告)日: 1992-07-21
- 发明人: Shunji Nakamura , Hiroki Kisu , Yohji Tomoyuki , Masanobu Saito , Junji Araya , Toshio Miyamoto
- 申请人: Shunji Nakamura , Hiroki Kisu , Yohji Tomoyuki , Masanobu Saito , Junji Araya , Toshio Miyamoto
- 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: JPX62-336485 19871228; JPX63-6845 19880118; JPX63-121952 19880520; JPX63-148078 19880617; JPX63-149272 19880618
- 主分类号: G03G15/02
- IPC分类号: G03G15/02 ; G03G15/16
摘要:
An image forming apparatus includes a movable image bearing member, a charger for electrically charging the image bearing member, latent image forming device for forming a latent image with use of the charger, a developing device for developing the latent image formed by the latent image forming device with toner electrically charged to a polarity the same as a polarity to which the image bearing member is charged by the charger, image transfer member contactable to a back side of a transfer material to transfer a toner image provided by the developing device from the image bearing member to the transfer material, a voltage application device for applying a voltage to the transfer member, the voltage application device applying a voltage having a polarity the same as that of the toner to the transfer member during non-transferring operation, and a device for providing different potentials for a portion of the image bearing member to be opposed to the image transfer device during the non-transfer action by said image transfer member and for a portion of said image bearing member to be opposed to said image transfer member during transfer action by the image transfer member.
公开/授权文献
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