Electrophotographic lithographic printing plate precursor

摘要

An electrophotographic lithographic printing plate precursor which utilizes an electrophotographic light-sensitive material comprising a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a binder resin, wherein the binder resin contains at least one graft-type copolymer comprising at least (1) a monofunctional monomer containing a functional group which has at least one atom selected from a fluorine atom and a silicon atom and is capable of forming at least one hydrophilic group selected from a sulfo group, a phosphono group, a carboxy group and a hydroxy group through decomposition, and (2) a monofunctional macromonomer which has a weight average molecular weight of from 1x10<3> to 2x10<4>, and has a polymerizable double bond group represented by the general formula (I) described below bonded to only one terminal of the main chain thereof. wherein X1 represents -COO-, -OCO-, -O-, -SO2-, -CO-, -CONHCOO-, -CONHCONH-, or (wherein d1 represents a hydrogen atom or a hydrocarbon group; and n and m each represents an integer of from 1 to 4); and a1 and a2, which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, a hydrocarbon group, -COO-Z1 or -COO-Z1 bonded via a hydrocarbon group (wherein Z1 represents a hydrocarbon group which may be substituted). The electrophotographic lithographic printing plate precursor is excellent in electrostatic characteristics (particularly, dark charge retention property and photosensitivity), capable of reproducing a faithful duplicated image to the original and forming neither overall background stains nor dotted background stains of prints, and has excellent printing durability. Further, it is suitable for a scanning exposure system using a semiconductor laser beam.