Rubber member for use in electrophotographic apparatus and rubber member for separating paper sheets

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 whi...

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Bibliographic Details
Main Authors ABE, NORIKO, SHIMABUKURO, KATSUJI, SHIRASAKA, HITOSHI, SAKATANI, MIKA, SHIZURU, KOUICHI, NODA, SHUHEI
Format Patent
LanguageEnglish
French
German
Published 20.02.2002
Edition7
Subjects
CHEMISTRY
CINEMATOGRAPHY
COMPOSITIONS BASED THEREON
CONVEYING
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HANDLING THIN OR FILAMENTARY MATERIAL
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES
HOLOGRAPHY
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
MAGNETOGRAPHY
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PACKING
PERFORMING OPERATIONS
PHOTOGRAPHY
PHYSICS
STORING
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
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Summary: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).
Bibliography:Application Number: EP20010118693