| 发明名称 |
CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS |
| 摘要 |
A charging device includes a charging roller and a cleaning roller configured to make contact with the charging roller. The cleaning roller is rotated following the charging roller. A dynamic friction coefficient of a surface of the charging roller measured by an oiler belt method is equal to or larger than 0.5. |
| 申请公布号 |
WO2008069339(A1) |
申请公布日期 |
2008.06.12 |
| 申请号 |
WO2007JP73745 |
申请日期 |
2007.12.04 |
| 申请人 |
RICOH COMPANY, LIMITED;TANAKA, SHUJI |
发明人 |
TANAKA, SHUJI |
| 分类号 |
G03G15/02;G03G9/08;G03G9/087 |
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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