发明名称 |
DEVELOPING ROLLER, DEVELOPING APPARATUS, AND IMAGE FORMING APPARATUS |
摘要 |
A developing roller includes a cylindrical sleeve that holds developer on a peripheral surface thereof, and a magnet roller being provided in the sleeve and having a plurality of magnetic poles. The sleeve includes a plurality of micro-recesses formed on the peripheral surface thereof, and the plurality of micro-recesses are arranged dispersedly in the axial direction and the circumferential direction of the sleeve. The densities of the micro-recesses in both end portions of the sleeve are larger than the density of the micro-recesses in a central portion of the sleeve.
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申请公布号 |
US2009148195(A1) |
申请公布日期 |
2009.06.11 |
申请号 |
US20080326380 |
申请日期 |
2008.12.02 |
申请人 |
KABUSHIKI KAISHA TOSHIBA;TOSHIBA TEC KABUSHIKI KAISHA |
发明人 |
OCHIAI NORIKAZU |
分类号 |
G03G15/09 |
主分类号 |
G03G15/09 |
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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