Conductive elastomer composition, conductive member using conductive elastomer composition, image-forming apparatus having conductive member

A conductive elastomer composition comprising an ionic-conductive elastomer component, another elastomer component, and an anion-containing salt having a fluoro group (F—) and a sulfonyl group (—SO2—),

• said conductive elastomer composition having:
• a volume charge not more than 108.5(Ω·cm) when said volume charge is measured at a voltage of 100V applied thereto in accordance with the method specified in JIS K6911;
• a compression set not more than 30% when said compression set is measured at a temperature of 70° C. for 24 hours at a compressibility ratio of 25% in accordance with “the permanent set testing methods for rubber, vulcanized or thermoplastic” specified in JIS K6262, and
• wherein said conductive elastomer composition is a vulcanized rubber composition comprising:
• epihalohydrin rubber, as said ionic-conductive elastomer component, which comprises epihalohydrin, ethylene oxide, and allyl glycidyl ether copolymerized at a ratio of 10 to 45 mol %, 55 to 80 mol %, and 0 to 10 mol % respectively;
• and
• not less than 0.01 nor more than 20 parts by weight of said anion-containing salt having said fluoro group (F—) and said sulfonyl group (—SO2—) for 100 parts by weight of an entire polymer component containing said ionic-conductive elastomer component.