Tokai Rubber Industries, Ltd.

Sumitomo Riko Company Limited

Minobu Iinuma

Hitoshi Yoshikawa

Yosuke Hayashi

Shinkichi Kashihara

Hiroki Sugiura

Satoshi Tatsumi

Koji Morihara

The object of the present invention is to provide a conductive roll having high resistance to permanent set and high resistance to adhesion. The conductive rollhas a rubber elastic portion formed of a rubber material including a carbon-carbon double bond and exhibiting electric conductivity. The surface of the rubber elastic portion is exposed as the surface of the roll. An organic group including one or more groups selected from silicone groups and fluorine-containing groups is bonded through an isocyanuric acid skeleton to the surface of the rubber elastic portion. The organic group may be a group derived from an organic compound including one or more groups selected from silicone groups and fluorine-containing groups and having a carbon-carbon double bond.

Conductive roll

An electrically conductive polymer available at low-cost and superior both in electrical conductivity and solubility. The electrically conductive polymer is solvent soluble and is obtained by imparting electrical conductivity to a pi-electron conjugated polymer by means of a dopant; the dopant comprises an alkylbenzenesulfonic acid or its salt having 2 or more alkyl substituent groups, wherein a total carbon number of the alkyl substituent groups is 10 to 37.

Electrically conductive polymer, semiconductive composition using the same and semiconductive member for electrophotographic equipment

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Ichinomiya, Japan

Minobu Iinuma