| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a conductive rubber roller which controls high viscosity in forming, in which conductive carbon black is distributed uniformly, which has moderate hardness and small resistance unevenness, which can form a uniform image, and which is excellent in bleeding resistance. <P>SOLUTION: This conductive rubber roller has a conductive elastic layer 2 on a conductive support body 1. The conductive elastic layer is formed by crosslinking rubber compositions containing acrylonitrile butadiene rubber (A) having a specific SP value, synthetic rubber (B) having a specific SP value and a specific weight average molecular weight, and conductive carbon black (C). The rubber compositions are contained as in the conditions that (a)/(b) is 4.00-20.0 and (a)/(c) is 1.30-4.95, where the mass of the acrylonitrile butadiene rubber (A) is (a), the mass of the synthetic rubber (B) is (b), and the mass of the conductive carbon black (C) is (c). <P>COPYRIGHT: (C)2009,JPO&INPIT |
