Patent ID: 7335420

Claim:
A feed/transport roller having an elastic layer comprising a castable polyurethane, which is a reaction product of a polyester-polyol having a number average molecular weight of 1,000 to 3,000 with a polyisocyanate, wherein the elastic layer is formed from the polyester-polyol, the polyisocyanate, an adipic acid ester derivative serving as a plasticizer, a short-chain diol having a molecular weight of 70 to 120 serving as a chain-extender, and a triol as a cross -liking agent, wherein the adipic acid ester derivative has an ether moiety in the molecule and is employed in an amount of 5 to 40 parts by weight with respect to 100 parts by weight of the polyester-polyol, and wherein the triol has an ether moiety in the molecule and has a number average molecular weight of 3,000 to 5,000 serving as a cross-linking agent.