Electrophotographic photoreceptor including a copolymer polyarylate resin, production method therefor, electrophotographic device including the photoreceptor, and production method for the copolymer polyarylate resin

摘要

An electrophotographic photoreceptor having a photosensitive layer which includes, as a resin binder, a copolymeric polyarylate resin having structural units of a Chemical Structural Formula 1, a method of producing the photoreceptor, an electrophotographic device including the electrophotographic photoreceptor, and a method of preparing the copolymeric polyarylate resin are provided. The electrophotographic photoreceptor reduces the amount of abrasion at the surface of a photoreceptor drum and lowers frictional resistance from the beginning until the end of printing, and moreover provides good images.

主权项

1. A method of producing an electrophotographic photoreceptor, comprising:
forming a photosensitive layer by applying, onto an electrically conductive substrate, a coating liquid that includes at least a resin binder that is a reaction product of a siloxane component selected from among (C), (D), (E) and (F) below in a solution polymerization, followed by an interfacial polymerization, and that is a copolymeric polyarylate resin having structural units of Chemical Structural Formula 1 below:where partial structural formulas (A1), (A2), (B1), (B2), (C), (D), (E) and (F) are structural units making up the resin binder; a1, a2, b1, b2, c, d, e and f represent mol % of the respective structural units (A1), (A2), (B1), (B2), (C), (D), (E) and (F), with a1+a2+b1+b2+c+d+e+f being 100 mol % and c+d+e+f being from 0.001 to 10 mol %; W1 and W2 are two different moieties selected from the group consisting of a single bond, —O—, —S—, —SO—, —CO—, —SO2—, —CR22R23— (R22 and R23 being a hydrogen atom, an alkyl group or halogenated alkyl group of 1 to 12 carbons, or a substituted or unsubstituted aryl group of 6 to 12 carbons), substituted or unsubstituted cycloalkylidene groups of 5 to 12 carbons, substituted or unsubstituted α,ω-alkylene groups of 2 to 12 carbons, a 9,9-fluorenylidene group, substituted or unsubstituted arylene groups of 6 to 12 carbons, and divalent groups containing an aryl group or arylene group of 6 to 12 carbons; R1 to R20 are each a hydrogen atom, an alkyl group of 1 to 8 carbons, a fluorine atom, a chlorine atom or a bromine atom; R21 is a hydrogen atom, an alkyl group of 1 to 20 carbons, an aryl group, a cycloalkyl group, a fluorine atom, a chlorine atom or a bromine atom; and “s” and “t” are integers of 1 or more.