Patent ID: 6122473
Filing Date: 2000-09-19
Classification: G03G

Abstract:
A developer carrying member for carrying a developer, comprising;a substrate and a resin coat layer which is formed on a surface of the substrate and contains a binder resin and a conductive fine powder, wherein;said binder resin comprises a copolymer having a monomeric unit of a methyl methacrylate monomer (M) and a monomeric unit of a nitrogen-containing vinyl monomer (N);a copolymerization molar ratio of the methyl methacrylate monomer (M) to the nitrogen-containing vinyl monomer (N) in said copolymer fulfills the following condition:M:N=4:1 to 999:1;andsaid binder resin has a weight-average molecular weight (Mw) of from 3,000 to 50,000.