Charging roll

The present invention provides a charging roll which has good fatigue resistance and low degree of hardness and can advantageously play required conductivity. In a charging roll obtained by arranging conductivity elastic layer around a shaft, rubber composition forms the conductivity elastic layer,...

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Bibliographic Details
Main Authors TSUCHIYA KENICHI, MISUMI FUMIO, SUZUKI SATOSHI, SASAKIBARA NAOAKI, TAKEYAMA KADAI
Format Patent
LanguageChinese
English
Published 31.12.2008
Subjects
BEARINGS
BLASTING
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOLOGRAPHY
LIGHTING
MAGNETOGRAPHY
MECHANICAL ENGINEERING
PHOTOGRAPHY
PHYSICS
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:The present invention provides a charging roll which has good fatigue resistance and low degree of hardness and can advantageously play required conductivity. In a charging roll obtained by arranging conductivity elastic layer around a shaft, rubber composition forms the conductivity elastic layer, the ionically conductive elastic layer is formed of a rubber composition free of any electron-conductive agent and containing 0.7 to 1.0 parts by weight of a peroxide cross-linking agent per 100 parts by weight of an ion-conductive rubber. The ion-conductive rubber is formed of at least one of an epichlorohydrin rubber and a nitrile rubber, and a percentage of a rubber component in the ionically conductive elastic layer measured by thermogravimetric analysis is 90% or more by weight.
Bibliography:Application Number: CN20081131802