Patent ID: 7727135

Claim:
A conductive rubber roller comprising a conductive core material and provided thereon a rubber layer; said rubber layer being formed by using a rubber composition containing as rubber components at least a polar rubber and an ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer; said ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer having a melt peak temperature of 20° C. or higher and 30° C. or lower and a melt enthalpy change ΔH of 40 mJ/mg or more and 70 mJ/mg or less as measured with a differential scanning calorimeter; and the allyl glycidyl ether in said ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer being in a copolymerization ratio of from more than 10 mol % to 20 mol % or less.