Electrophotographic lithographic printing plate

摘要

There is disclosed an electrophotographic lithographic printing plate having a precoat layer having improved water resistance and organic solvent resistance and an improved photoconductive layer which comprises: (1) a paper base; (2) a precoat layer on one side of said paper base, which precoat layer contains at least (a) 10% by weight or less (based on total solids) of a film-forming water-soluble polymer, (b) about 30 to about 80% by weight (based on total solids content) of a water-dispersible resin, and (c) an inorganic pigment; (3) a photoconductive layer provided on said precoat layer, which photoconductive layer contains (a) photoconductive zinc oxide, and (b) at least 2 binder resins different in acid value from each other by 5 or more, said mixed binder resins in the photoconductive layer having an average acid value of 5 to 30; and (4) a conductive back-coat layer on the other side of said paper base, which back-coat contains at least (a) 10% by weight or less (based on total solids) of a film-forming water-soluble polymer, (b) a water-dispersible resin, and (c) a conductive agent.