发明名称 |
CHARGING MEMBER, ELECTROPHOTOGRAPHIC DEVICE, AND PROCESS CARTRIDGE |
摘要 |
Provided is a charging member capable of stably charging an object to be charged while suppressing adhesion of toner or an external additive onto a surface of an elastic layer and compression set of an abutting portion of the elastic layer. The charging member is a charging member, comprising a mandrel; and an electro-conductive elastic layer, wherein: the elastic layer has a universal hardness decreasing from a surface toward a depth direction thereof; and the hardnesses at a central portion and both end portions in a longitudinal direction of the charging member satisfy the relationships: in the surface of the elastic layer, the hardnesses at the both end portions are higher than that at the central portion; and at a position having a depth of t (µm) from the surface of the elastic layer, the hardness at the central portion is higher than those at the both end portions. |
申请公布号 |
EP2818936(A4) |
申请公布日期 |
2015.11.04 |
申请号 |
EP20120869288 |
申请日期 |
2012.10.04 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SUZUKI, TOSHIRO;NAGATA, YUKINORI;HARADA, MASAAKI |
分类号 |
G03G15/02;F16C13/00 |
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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