Patent ID: 9422124
Filing Date: 2016-08-23
CPC Classification: B65H,G03G

Claim Text:
1. A sheet conveying roller comprising a tubular roller body, which includes: a tubular outer layer defining an outer peripheral surface of the roller body; and a tubular inner layer inserted directly in the tubular outer layer without the intervention of an adhesive agent and unified with the outer layer; wherein the outer layer is a nonporous tubular layer made of a composition comprising a urethane thermoplastic elastomer as a base polymer, the urethane thermoplastic elastomer including a hard segment having a polyurethane structure and a soft segment having a polyester or polyether structure in a molecule thereof, and has a Type-A Durometer hardness of not less than 40 and not greater than 65; wherein the inner layer is a nonporous tubular layer made of a crosslinking product of a composition comprising a butyl rubber or an ethylene propylene rubber as a base polymer, and has a Type-A Durometer hardness of greater than 10 and not greater than 25.