Patent ID: 7798948

Claim:
An electrophotographic developing member comprising a mandrel and a surface layer containing a urethane resin, the surface layer being provided on the peripheral surface of the mandrel, wherein; the surface layer satisfies the following relationships (1) to (3) where the average crosslinking density in each region of up to 100 nm in depth, from 100 nm to 200 nm in depth and from 200 nm to 300 nm in depth from the surface of the surface layer is represented by C 1 , C 2 and C 3 (mol/cm 3 ): C3<C2<C1; (1) C 3×1.3 ≦C 1 ≦C 3×5.0; and (2) 2.0×10 −4 ≦C 3≦7.0×10 −4 . (3)