Lithographic printing plate material
AssigneeMitsubishi Paper Mills Limited
InventorsMotozo Yamano, Kunihiro Nakagawa, Toshiro Kondo
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Abstract
There is disclosed an aluminum lithographic printing plate material which comprises an aluminum substrate, a silver halide emulsion layer and a physical development nuclei layer between the aluminum substrate and the silver halide emulsion layer, said silver halide emulsion layer contains photographic gelatin and gelatin having a weight average molecular weight of about 50,000 or less is contained in said silver halide emulsion layer and/or under said layer.
Claims6
An aluminum lithographic printing plate material which comprises an aluminum substrate, a silver halide emulsion layer and a physical development nuclei layer between the aluminum substrate and the silver halide emulsion layer, said silver halide emulsion layer contains photographic gelatin having a weight average molecular weight of about 100,000 or more and gelatin having a weight average molecular weight of about 30,000 or less in an amount of 5 to 50% by weight based on the amount of the photographic gelatin, and sensitizing dye having no acidic group.
Dependencies are inferred from the claim text.