Electrographic litho printing plate material

Details Electrographic litho printing plate material Electrographic litho printing plate material

G - Physics

03

G

96/209

G03G 13/26 (2006.01) G03G 5/14 (2006.01)

Patent

CA 1246382

ELECTROGRAPHIC LITHO PRINTING PLATE MATERIAL ABSTRACT OF THE DISCLOSURE An electrophotographic litho printing plate material which has a high storage stability and is useful for providing litho printing plates having an enhanced high quality image-forming durability, an improved printing durability, and an excellent dimensional stability, comprises (A) a substrate sheet; (B) an intermediate coating layer comprising (a) wet ground white mica fine particles having an average size of 5 to 50 µm, (b) a waterproofing agent comprising an organic silane compound of the formula (1): RnSiX4-n (1) wherein n = 1 or 2, R = aliphatic, cycloaliphatic, aromatic or heterocyclic radical having 1 to 30 carbon atoms, at least one R being chemically reactive, and X = hydrolyzable substit- uent, and (c) a thermoplastic resin binder; and (C) a photoconductive coating layer containing photoconductive pigment particles and an electrically insulating polymeric binder.

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