LITHOGRAPHIC PRINTING PLATES AND SUPPORTS THEREFOR

摘要

A lithographic printing plate which comprises: (a) a support comprising an iron foil prepared by electroforming, wherein one surface of said foil is in contact with an electrolyte and the opposite surface is in contact with a negative electrode, said foil being electroplated with a hydrophilic metal on both surfaces, and (b) an oleophilic image area formed from a photo-sensitive resin on said surface of the hydrophilic metal coated iron foil, which was in contact with said electrolyte and a non-image area where said resin is not present on said surface of said hydrophilic metal coated iron foil which was in contact with said electrolyte, said non-image area exhibiting good hydrophilic and water retentive properties in lithographic printing.