发明名称 |
Image forming apparatus with controlled transfer voltage |
摘要 |
An image forming apparatus includes an image bearing member carrying an image corresponding to image information; an image transfer device for transferring the image on the image bearing member onto a transfer material at a transfer position, wherein the transfer device includes a charging member contactable to a back side of the transfer material and voltage application means for applying a voltage to the charging member, wherein the voltage applying device effects a constant voltage control to the charging member when an image region of the image bearing member is at the transfer position, and effects a constant current control to the charging member at least a part of the other duration, and wherein a voltage level of the constant voltage control is determined on the basis of a voltage across the transfer device during the constant current control; wherein voltage applied to the charging member by the voltage applying device or a current through the charging member by the voltage applying device is limited.
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申请公布号 |
US5151736(A) |
申请公布日期 |
1992.09.29 |
申请号 |
US19910682404 |
申请日期 |
1991.04.08 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
OHZEKI, YUKIHIRO;ARAYA, JUNJI;ISHIYAMA, TATSUNORI;SATO, YASUSHI;NAKAHATA, KIMIO |
分类号 |
G03G15/16 |
主分类号 |
G03G15/16 |
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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