Patent ID: 7851113

Claim:
An overcoat layer for electrophotographic imaging members, comprising: a polymer matrix; a particulate inorganic lubricant comprising a plurality of boron nitride particles ranging in size of from about 0.05 to about 5 μm; and a particulate fluoropolymer comprising a plurality of particles ranging in size of from about 0.05 to about 5 μm; wherein the particulate inorganic lubricant and the particulate fluoropolymer are uniformly dispersed throughout the matrix, said particulate inorganic lubricant is present at from about 0.5 to about 10% by weight, relative to a total weight of the overcoat layer, and said particulate fluoropolymer is present at from about 1 to about 20% by weight, relative to a total weight of the overcoat layer, said polymer matrix comprises a cross-linked polysiloxane, wherein the cross-linked polysiloxane is produced by hydrolysis and condensation of a coating formulation that comprises an aromatic silicon-containing compound of Formula (I) and a silicon-containing hole-transport compound of Formula (II): A L-SiR n X 3-n ] m (I) B L-SiR n X 3-n ] m (II) where A is a multiple-valent organic group; B is a hole-transport moiety; L is a divalent linkage; R is a hydrocarbon group selected from the group consisting of alkyl groups, arylalkyl groups, aryl groups, and alkylaryl groups; X is a hydrolytic group; m is an integer from 1 to 6; n is an integer from 0 to 2; and the m, n, L, R, and X of Formulas (I) and (II) are independently selected; and wherein the silicon-containing hole-transport compound of Formula (II) is selected from the group consisting of compounds of Formulas (II-A) through (II-F) and (II-K) through (II-N): in which R′ is an alkyl group having from 1 to about 4 carbon atoms.