Patent ID: 7486911

Claim:
An elastic member for electrophotography, comprising a mandrel and a conductive or semiconductive elastic layer on the periphery of the mandrel, wherein; said elastic layer comprises a vulcanized rubber obtained by vulcanizing a non-vulcanized rubber composition comprising a material rubber and at least a sulfur atom-containing compound represented by the following formula (5): wherein R 501 to R 520 each independently represent a hydrogen atom or a monovalent substituent, and n 3 is an integer of 1 to 8; and with the proviso that dithiocarbamates are excluded from the non-vulcanized rubber composition; wherein said non-vulcanized rubber composition comprises said sulfur atom-containing compound in an amount of 20% by weight or more based on the weight of all vulcanization accelerators in said non-vulcanized rubber composition; wherein said non-vulcanized rubber composition further comprises sulfur as a vulcanizing agent; and wherein said material rubber comprises an ion-conduction type rubber or an insulating rubber compounded with conductive particles.