发明名称 |
Overlaid image forming apparatus with coordinated transfer bias and attraction bias voltage sources |
摘要 |
A superposed image forming apparatus wherein toner images are superposedly transferred onto a transfer material includes an image bearing member; a device for forming a toner image on the image bearing member; a transfer material carrying member, disposed opposed to the image bearing member, for carrying a transfer material in synchronism with the toner image on the image bearing member; a transfer material supplying device for supplying the transfer material to the transfer material carrying member; a transfer bias voltage source for applying to the transfer material carrying member a bias voltage for image transfer from the image bearing member to the transfer material; an attraction member for urging the transfer material to the transfer material carrying member to hold the transfer material on the transfer material carrying member; an attraction bias voltage source for applying a bias voltage to the attraction member; the bias voltage applied to the attraction member is changed in association with on-and-off of the bias voltage application to the transfer material carrying member so as to maintain a constant surface potential of the transfer material carrying member.
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申请公布号 |
US5287163(A) |
申请公布日期 |
1994.02.15 |
申请号 |
US19920968260 |
申请日期 |
1992.10.29 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
MIYASHIRO, TOSHIAKI;TAKAHASHI, SHINKICHI;KOBAYASHI, TATSUYA |
分类号 |
G03G15/01;G03G15/16;(IPC1-7):G03G15/01 |
主分类号 |
G03G15/01 |
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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