Electrophotographic lithographic printing plate

An electrophotographic lithographic printing plate composed of a condutive base, a precoat layer provided on said conductive base, and a photoconductive layer laid over said precoat layer, wherein said base is a paper base;

• said precoat layer contains at least (a) 10% by weight or less (based on total solids) of a film-forming water-soluble polymer and (b) a water-dispersible resin;
• and said photoconductive layer contains at least (a) inorganic photoconductive particles and (b) 2 or more binder resins different in acid value from each other, the average acid value of the binder resin mixture being 5 to 30.

A printing plate according to claim 47, wherein the binder resin mixture in the photoconductive layer has an average acid value of 5 to 25.

A method for preparing an electrophotographic lithographic printing plate, which comprises coating one side of a paper base with a coating composition containing at least (a) 10% by weight or less (based on total solids) of a film-forming water-soluble polymer and (b) a water-dispersible resin, then drying the coating to form a precoat layer;

• applying to said precoat layer a coating composition as a photoconductive layer obtained by dispersing in a medium a mixture comprising at least (a) an inorganic photoconductive particles and (b) 2 or more binder resins different from each other in acid value, the average acid value of the resin binder mixture being 5 to 30, so that the Bekk smoothness of the dispersion becomes about 500 to about 1,500 seconds (as determined by the method specified in JIS P 8119), and drying the coating to form a photoconductive layer.