发明名称 |
Charging member, process cartridge and electrophotographic apparatus |
摘要 |
A charging member comprising a conductive mandrel, a semiconductive foamed elastic layer provided on the periphery of the mandrel, and a functional double-layer film provided on the periphery of the semiconductive foamed elastic layer. The semiconductive foamed elastic layer is a layer formed by making the mandrel and a semiconductive rubber composition standing uncured and unfoamed pass through a crosshead die of an extruder to set the composition on the periphery of the mandrel, followed by curing and foaming. The semiconductive rubber composition has a Mooney viscosity of from 15 to 30 and having a curing percentage of 40% or less when the foaming pressure reaches 50%. The functional double-layer film is a double-layer tube having a thin layer such that a tube formed out of only the layer is hard to use for covering. Also disclosed are a process cartridge and an electrophotographic apparatus which have such a charging member.
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申请公布号 |
US2002086125(A1) |
申请公布日期 |
2002.07.04 |
申请号 |
US20010985740 |
申请日期 |
2001.11.06 |
申请人 |
KAKII HITOSHI;NAKAZAWA TOSHIMITSU;IKEDA KAN;SUZUKI TAKESHI;YAMADA DAISUKE;TAKAHASHI MIE;ISHII KENJI |
发明人 |
KAKII HITOSHI;NAKAZAWA TOSHIMITSU;IKEDA KAN;SUZUKI TAKESHI;YAMADA DAISUKE;TAKAHASHI MIE;ISHII KENJI |
分类号 |
G03G15/02;(IPC1-7):B32B1/08 |
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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