Tokai Rubber Industries, Ltd.

Sumitomo Riko Company Limited

Keisuke Tokoro

Satoshi Suzuki

Masanori Ishida

Akihiko Kaji

Kunio Ito

Tsukasa Fujita

Yousuke Hayashi

Shigeki Kanda

Takayuki Ootani

To provide a conductive member for an electrophotographic machine that is capable of preventing hardening degradation of a surface layer that is caused by an ionic conductive agent contained in a conductive rubber elastic body layer, allowing the surface layer to be improved in durability. A conductive memberfor an electrophotographic machine includes a conductive rubber elastic body layercontaining crosslinked rubber and an ionic conductive agent, and a surface layerprovided on an outer periphery of the conductive rubber elastic body layer, wherein the surface layercontains a polymer and polyphenol. Examples of the polyphenol include a tannin, gallic acid, ellagic acid, pyrogallol, catechin, and chlorogenic acid.

Conductive member for electrophotographic machine

An endless belt for use as an intermediate transfer belt or a transfer-sheet transfer belt in an electrophotographic apparatus using electrophotographic technologies such as a full-color LBP (Laser Beam Printer) or a full-color PPC (Plane Paper Copier). At least a base layer of the belt comprises a modified polyamide imide resin formed by copolymerizing: (A) an aromatic isocyanate compound; (B) an aromatic polycarboxylic acid anhydride; and (C) a polymer having carboxylic acids at both terminals thereof.

Endless belt for electrophotographic apparatus

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Komaki, Japan

Keisuke Tokoro