Patent ID: 8846287
Filing Date: 2014-09-30
Classification: G03G,Y10T

Abstract:
1. An electrophotographic member comprising a substrate, an elastic layer, and a surface layer containing a urethane resin, wherein the urethane resin has a partial structure A having at least one structure selected from the group consisting of structures of the following structural formulae (1) to (7) between adjacent two urethane linkages, and further has a partial structure B derived from a reaction of a compound represented by the following structural formula (8) with a polyisocyanate: wherein, R1 and R2 each independently represent a linear or branched alkylene group having 4 to 6 carbon atoms; wherein, n is an integer of 1 or more and 4 or less, R3s are each independently the following R3A or the following R3B, with the proviso that at least four R3s are R3A, R3A is any selected from the group consisting of the following (a) to (c): (a) a hydroxyalkyl group having 1 to 8 carbon atoms, (b) an aminoalkyl group having 2 to 8 carbon atoms, and (c) a group represented by the following structural formula (9); R3B represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R4 represents an alkylene group having 2 to 4 carbon atoms; wherein, m represents an integer of 2 or more and 3 or less, and R5 represents an alkylene group having 2 to 5 carbon atoms.