发明名称 |
An image forming apparatus. |
摘要 |
<p>An image forming apparatus includes a movable image bearing member (1); an image forming device (5,6) for forming an image on the image bearing member; a transfer device (2) for transferring an image from the image bearing member to a transfer material at a transfer position, wherein the transfer device is contactable to a backside of the transfer material at the transfer position and includes a charging member including a double oxide and a voltage source for applying a voltage to the charging member, and wherein the voltage source constant-voltage-controls the charging member when an image region of the image bearing member is at the transfer position, and constant-current-controls the charging member in at least a part of a period when the image region of the image bearing member is not at the transfer position, wherein a constant voltage for the constant voltage control is determined on the basis of the constant current control.</p> |
申请公布号 |
EP0404079(A2) |
申请公布日期 |
1990.12.27 |
申请号 |
EP19900111595 |
申请日期 |
1990.06.19 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
OHZEKI, YUKIHIRO;HIROSHIMA, KOICHI;NISHIMURA, YOSHIAKI;MURATA, JUN;ARAYA, JUNJI;ISHIYAMA, TATSUNORI;SATO, YASUSHI;NAKAHATA, KIMIO |
分类号 |
G03G15/00;G03G15/16 |
主分类号 |
G03G15/00 |
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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