An inventive electrically conductive rubber composition contains: a rubber component including SBR and/or NBR, and 20 to 30 parts by mass of epichlorohydrin rubber based on 100 parts by mass of the overall rubber component; a crosslinking component; a foaming component; and a potassium salt of an anion having a fluoro group and a sulfonyl group in its molecule, the potassium salt being present in a proportion of not less than 0.01 part by mass and not greater than 1 part by mass based on 100 parts by mass of the overall rubber component. An inventive transfer roller (1) includes a roller body (2) formed from the electrically conductive rubber composition.
本发明的导电橡胶组合物包含:橡胶成分,包括
丁苯橡胶和/或
丁腈橡胶,以及 20 至 30 质量份的
环氧氯丙烷橡胶(以整个橡胶成分的 100 质量份为基准);交联成分;发泡成分;以及分子中含有
氟基和磺酰基的阴离子的
钾盐,其中
钾盐的存在比例不小于 0.01 质量份,但不大于 1 质量份(以整个橡胶成分的 100 质量份为基准)。本发明的转移辊(1)包括由导电橡胶组合物形成的辊体(2)。