发明名称 |
Apparatus and method for cleaning a transfer device of an image forming apparatus |
摘要 |
A contact type image transferring system and method, incorporated in an image forming apparatus, for cleaning a residual toner on a transfer roller. The transfer roller is in contact with a photoconductive drum and forms a nip between the roller and the drum. A sheet of paper passes through the nip and a toner image on the drum is transferred to the sheet of paper. When the sheet of paper is not at the nip, not only a transfer voltage but also a charging voltage is applied at a same time. The polarities of the voltages applied to the charger and to the transfer roller cause the toner on the transfer roller to be removed.
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申请公布号 |
US5857132(A) |
申请公布日期 |
1999.01.05 |
申请号 |
US19970935111 |
申请日期 |
1997.09.29 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
MIZUISHI, HARUJI;FUZISAKI, HISASHI;YOSHIDA, MAYUMI;KARASHIMA, KENJI;AKIBA, YASUSHI |
分类号 |
G03G15/02;G03G15/00;G03G15/16;(IPC1-7):G03G15/00 |
主分类号 |
G03G15/02 |
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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