Tokai Rubber Industries, Ltd.

Shiro Miyamori

Satoshi Suzuki

Masanari Umeda

Kenichi Tsuchiya

Yasuhito Suzuki

Yasuyuki Hayasaki

Kazuhide Tsuda

Akihiro Maeda

An electrically conductive roll includes a shaft body and at least a conductive elastic layer formed by extrusion on an outer circumferential surface of the shaft body. The conductive elastic layer is formed from at least one conductive rubber composition which includes a rubber material, a thermoplastic resin having crosslinkable double bonds and a melting point in a range from 40&#xb0; C. to 100&#xb0; C., and at least one conductive agent. The thermoplastic resin is included in an amount of 5 to 50 wt. % of a total amount of the rubber material and the thermoplastic resin.

Conductive roll

A cleaning blade (11) is formed of a cured urethane composition of a polyisocyanate and a polyol. The cured composition has a crosslinking density of 8.5.times.10.sup.-4 to 11.0.times.10.sup.-4 mol/cm.sup.3 and a tan .delta. peak temperature of not greater than 10.degree. C.

Cleaning blade

Growing community of inventors

Ishikawa-gun, Japan

Shiro Miyamori