Abstract: The present invention addresses the issue of providing a cleaning blade having excellent durability. An elastic body for blades is provided that has an abutting section that comprises a heat-curable polyurethane urea that is a reaction product of at least a polyol, a polyisocyanate, and a curing agent including a diaminobenzoic acid ester indicated by general formula (1).

Abstract: A blade for an electro-photographic device includes an elastic rubber member constituted by an edge portion and a base portion which are in contact with each other and are constituted by different materials, wherein the edge portion includes an edge subject to frictional wear in use and is made of ester polyurethane, and the base portion is adapted to be bonded to a support and is made of ether polyurethane. The blade undergoes minimal permanent deformation and offers excellent mechanical strength, wear resistance and compliance to the use environment.

Abstract: An object of the present invention is to provide a blade for an electro-photographic device formed by two layers, which undergoes minimal permanent deformation and offers excellent mechanical strength, wear resistance and compliance to the use environment. A blade for an electro-photographic device whose edge and base are constituted by different materials, wherein such blade for an electro-photographic device is characterized in that at least the edge is made of ester polyurethane and the base other than the edge is made of ether polyurethane.