发明名称 |
Rubber member for use in electrophotographic apparatus and rubber member for separating paper sheets |
摘要 |
<p>The present invention provides an electrophotography rubber member which has a rebound resilience remaining satisfactorily stabilized over changes in environmental conditions and can serve as a member such as a high-performance cleaning blade and provides a similar sheet-separation rubber member which generates no noise. The electrophotography rubber member or sheet-separation rubber member is formed of a rubber elastomer containing a polyurethane formed from a long-chain polyol containing a polyester-polyol having a number average molecular weight of 500-5,000 and an ester concentration of 2-8 mmol/g, wherein the ester concentration is defined by the following relationship: Ester concentration (mmol/g) = (Amount by mol of ester groups)/(Weight of the polyester-polyol). <IMAGE></p> |
申请公布号 |
EP1180731(A2) |
申请公布日期 |
2002.02.20 |
申请号 |
EP20010118693 |
申请日期 |
2001.08.03 |
申请人 |
HOKUSHIN CORPORATION |
发明人 |
SHIRASAKA, HITOSHI;ABE, NORIKO;SHIZURU, KOUICHI;SHIMABUKURO, KATSUJI;SAKATANI, MIKA;NODA, SHUHEI |
分类号 |
B65H3/52;C08G18/42;C08G18/66;G03G15/00;G03G15/02;G03G15/08;G03G15/16;G03G21/00;(IPC1-7):C08G18/42;C08G18/76 |
主分类号 |
B65H3/52 |
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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