Patent ID: 8503911
Filing Date: 2013-08-06
Classification: C08G,C09D,G03G,Y10T

Abstract:
1. A charging member for an electrophotographic apparatus, comprising: an electro-conductive support; an electro-conductive elastic layer; and a surface layer, wherein: the surface layer comprises a polymer compound having an Si—O—Ti linkage in a molecular structure thereof; and the polymer compound has constitutional units represented by the following formulae (1), (2), and (3): in the formulae (1) and (3), R in the formula (3), Rα represents any one of structures represented by the following formulae (8) to (12): in the formulae (4) to (7): R R n1, m1, q1, s1, t1, and u1 each independently represent an integer of 1 or more and 8 or less, and p1 and r1 each independently represent an integer of 4 or more and 12 or less; x1 and y1 each independently represent 0 or 1; a symbol “*” represents a site to be bonded to a silicon atom in the formula (1), a site to be bonded to a silicon atom in the formula (3), or a site to be bonded to any one of the structures represented by the following formulae (8) to (12) as Rα in the formula (3); and a symbol “**” represents a site to be bonded to an oxygen atom in each of the formula (1) and the formula (3): in the formulae (8) to (12): R a to e each independently represent an integer of 1 or more and 1,350 or less; and a symbol “*” represents a site to be bonded to the symbol “*” in any one of the structures represented by the formulae (4) to (7) as R