ELECTRICALLY CONDUCTIVE RUBBER ELASTOMER, CHARGING MEMBER, AND ELECTROPHOTOGRAPHIC APPARATUS
申请人:Canon Kabushiki Kaisha
公开号:EP2666814A1
公开(公告)日:2013-11-27
A conductive rubber elastic material is stably provided which can produce a charging member that may less vary in electrical resistance even with changes in applied voltage, promises uniform electrical properties, has charge characteristics not affected by changes in environments such as temperature and humidity, and enables a charging object member such as a photosensitive member to be kept from being contaminated. It is a conductive rubber elastic material which contains a matrix containing at least one ionically conductive rubber selected from the group consisting of epichlorohydrin rubber, epichlorohydrin-ethylene oxide rubber, epichlorohydrin-ethylene oxide-allyl glycidyl ether rubber, acrylonitrile-butadiene rubber and a hydrogenated product of acrylonitrile-butadiene rubber and domains composed of an electronically conductive rubber material containing i) a rubber having a butadiene skeleton and ii) carbon black, and the rubber having a butadiene skeleton is modified at a molecular terminal thereof with a specific atomic group.
本发明提供了一种导电橡胶弹性材料,该材料可制造出即使外加电压发生变化,电阻值变化也较小的充电部件,并具有均匀的电气特性,其充电特性不受温度和湿度等环境变化的影响,还可防止感光部件等充电对象部件受到污染。它是一种导电橡胶弹性材料,基体含有至少一种离子导电橡胶,这些橡胶选自环氧氯丙烷橡胶、环氧氯丙烷-环氧乙烷橡胶、环氧氯丙烷-环氧乙烷-烯丙基缩水甘油醚橡胶、丙烯腈-丁二烯橡胶和丙烯腈-丁二烯橡胶的氢化产品,以及由导电橡胶材料组成的域,其中包含 i) 具有丁二烯骨架的橡胶和 ii) 炭黑,具有丁二烯骨架的橡胶在其分子末端用特定原子团修饰。