发明授权
- 专利标题: Image forming apparatus
- 专利标题(中): 图像形成装置
-
申请号: US10698529申请日: 2003-11-03
-
公开(公告)号: US06965742B2公开(公告)日: 2005-11-15
- 发明人: Toshio Miyamoto , Masahiko Suzumi , Koji Nihonyanagi
- 申请人: Toshio Miyamoto , Masahiko Suzumi , Koji Nihonyanagi
- 申请人地址: JP 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: JP Tokyo
- 代理机构: Fitzpatrick, Cella, Harper & Scinto
- 优先权: JP2002-326182 20021108
- 主分类号: G03G15/00
- IPC分类号: G03G15/00 ; G03G15/02 ; G03G15/16 ; G03G21/00
摘要:
An image forming apparatus which can prevent the electric discharge when the trailing edge of a recording material passes a transferring position, and yet can stabilize the surface potential of a photosensitive drum. A controller changes a transfer bias voltage Vt during the supply of paper to 0 V before the trailing edge of recording paper arrives at a transferring nip part, changes it to a transfer bias voltage V0 during the non-supply of paper after the trailing edge of the recording paper has passed the transferring nip part, and changes a charging bias voltage to a charging bias voltage smaller than a normal charging bias voltage when an area on the photosensitive drum to which 0 V has been applied passes a charging nip portion. The transfer bias voltage V0 during the non-supply of paper is smaller than the transfer bias voltage Vt during the supply of paper.
公开/授权文献
- US20040091277A1 Image forming apparatus 公开/授权日:2004-05-13