Charging roll

A charging roll includes a shaft and an ionically conductive elastic layer formed around the shaft. 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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TSUCHIYA KENICHI, MISUMI FUMIO, SUZUKI SATOSHI, SASAKIBARA NAOAKI, TAKEYAMA KADAI
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A charging roll includes a shaft and an ionically conductive elastic layer formed around the shaft. 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.