Patent ID: 9081321
Filing Date: 2015-07-14
Classification: C09D,G03G,Y10T

Abstract:
1. A charging member comprising: an electro-conductive support, an elastic layer containing electro-conductive particles dispersed in the elastic layer, and a surface layer, wherein the elastic layer holds polyethylene particles in such a manner that at least a part of the polyethylene particles are exposed from the elastic layer, and a surface of the elastic layer is roughened thereby, the surface of the elastic layer is covered with the surface layer in such a manner that the surface shape of the elastic layer is reflected in the surface shape of the charging member, and wherein the surface layer contains a high-molecular compound having a constitutional unit represented by formula (1): (wherein in formula (1), R 1 and R 2 each independently represent any one of formulae (2) to (5): wherein in formulae (2) to (5), R 3 to R 7 , R 10 to R 14 , R 19 , R 20 , R 24 , and R 25 each independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, a hydroxy group, a carboxyl group, or an amino group; R 8 , R 9 , R 15 to R 18 , R 22 , R 23 , and R 27 to R 30 each independently represent hydrogen or an alkyl group having 1 to 4 carbon atoms; n, m, l, q, s, and t each independently represent an integer of 1 to 8; p and r each independently represent an integer of 4 to 12; x and y each independently represent 0 or 1; the symbols “*” represent a binding site to a corresponding one of the silicon atoms in formula (1).