发明名称 |
Transferring device and an image forming apparatus |
摘要 |
A transferring device for transferring on a record paper a toner image formed onto an image forming member is disclosed. The transferring device comprises a transfer belt with a dielectric layer formed on a conduction belt member; a driving device for running the transfer belt; a transfer roller for contacting the transfer belt to an image forming member with pressure; a corona charges arranged at a position opposite to the transfer belt for charging the transfer belt with a charge having a polarity opposite to the charging polarity of the toner; a grid electrode arranged between the corona charger and the transfer belt; a plurality of bias sources connected to the grid electrode for biassing the grid electrode at respective potentials; and a change-over circuit for changing over the connection between the grid electrode and the bias source, whereby the grid potentials are selectively changed over in accordance with the characteristics of a record paper to be used.
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申请公布号 |
US4958194(A) |
申请公布日期 |
1990.09.18 |
申请号 |
US19890316511 |
申请日期 |
1989.02.28 |
申请人 |
KENTEK INFORMATION SYSTEMS, INC. |
发明人 |
KAIEDA, SHOZO;OKAJIMA, HIDEO |
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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