To provide an electroconductive ethylene/propylene rubber foam improved in changes in electrical resistance when used, a member composed of the foam such as a transfer member and the like, and an image-forming device equipped with these members.
The electroconductive ethylene/propylene rubber foam comprises an ethylene/propylene rubber foam containing an electroconductive material, and has a specific volume resistivity ranging from 104 to 1010 Ωcm and giving a change, before and after continuous dynamic energization at 100 V for 12 hr, which satisfies the equation: ρ2/ρ1≤5 (wherein ρ1 is the specific volume resistivity before energization; and ρ2 is the specific volume resistivity after energization). The image-forming device is equipped with a member composed of the electroconductive ethylene/propylene rubber foam.
OSAKI TOSHIYUKI
KAWAGOE TAKAHIRO
