Dinsmore & Shohl LLP
Rubber covered roll, rubber composition, and image-forming apparatus
 A rubber covered roll of a structure that a rubber layer is formed on the surface of a roll-like base is provided. The rubber layer is a layer formed of a vulcanizate of a rubber composition comprising 25-95 wt. % of copolymer rubber (A) obtained by copolymerizing 28-70 mol % of an alkylene oxide, 28-70 mol % of an epihalohydrin and 2-15 mol % of an ethylenically unsaturated epoxide, and 5-75 wt. % of unsaturated rubber (B). The rubber covered roll does not contaminate any photosensitive member, stably has a low electric resistance, and is low in dependence of electric resistance on environment and in hardness. An image-forming apparatus equipped with the rubber covered roll as a development roll or charging roll, and a rubber composition for the rubber covered roll are also provided. 
Nippon Zeon Co., Ltd.
G G C Y C F C
G03G G03G C08L Y10T C08L F16C C08G
inventional additional inventional additional inventional additional inventional
Michiharu Hiromitsu Takeshi Tetsuo
Yogosawa Kikuchi Ooishi Waku