Overcoat for light-sensitive materials comprising (1-vinylimidazole) polymer or copolymer
AssigneeKodak Polychrome Graphics LLC
InventorsSocrates Peter Pappas, Harald Baumann, Udo Dwars, Celin M. Savariar-Hauck, Hans-Joachim Timpe
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Abstract
A lithographic printing plate precursor comprises a substrate, a free radical polymerizable photosensitive layer comprising a light-sensitive composition on the substrate, and a water-soluble overcoat layer on the photosensitive layer, wherein the overcoat layer comprises polyvinyl alcohol, and a further component that is not amphoteric and is poly(1-vinylimidazole) or a copolymer of 1-vinylimidazole and at least one further monomer. The photosensitive layer comprises a free radical polymerizable component and a photoinitiator.
Claims39
A lithographic printing plate precursor comprising a substrate, a free radical polymerizable photosensitive layer comprising a light-sensitive composition, and a water-soluble overcoat layer coated onto the photosensitive layer, wherein the overcoat layer comprises polyvinyl alcohol and a component that is poly(1-vinylimidazole) or a copolymer consisting of units of 1-vinylimidazole and at least one monomer selected from the group consisting of vinylpyrrolidone, vinyl alcohol, vinyl acetate, vinylalkylether, hydroxyalkylacrylate, vinyl acetamide, vinyl formamide, acrylonitrile, acrylamide, methacrylamide and vinylamine.
An overcoat for a free radical polymerizable photosensitive layer comprising light-sensitive compositions, wherein the overcoat comprises a water-soluble layer comprising polyvinyl alcohol and a component that is poly(1-vinylimidazole) or a copolymer consisting of units of 1-vinylimidazole and at least one monomer selected from the group consisting of vinylpyrrolidone, vinyl alcohol, vinyl acetate, vinylalkylether, hydroxyalkylacrylate vinyl acetamide, vinyl formamide, acrylonitrile, acrylamide, methacrylamide and vinylamine.
A water-soluble overcoat layer coated onto a photosensitive layer, wherein the overcoat layer comprises polyvinyl alcohol and a component that is poly(1-vinylimidazole) or a copolymer consisting of units of 1-vinylimidazole and at least one monomer selected from the group consisting of vinylpyrrolidone, vinyl alcohol, vinyl acetate, vinylalkylether, hydroxyalkylacrylate, vinyl acetamide, vinyl formamide, acrylonitrile, acrylamide, methacrylamide and vinylamine.
A lithographic printing plate precursor comprising a substrate, a free radical polymerizable photosensitive layer comprising a light-sensitive composition, and a water-soluble overcoat layer coated onto the photosensitive layer, wherein the overcoat layer comprises polyvinyl alcohol and a component that is a copolymer consisting of units of 1-vinylimidazole and vinylmethylacetamide.
An overcoat for a free radical polymerizable photosensitive layer comprising light-sensitive compositions, wherein the overcoat comprises a water-soluble layer comprising polyvinyl alcohol and a component that is a copolymer consisting of units of 1-vinylimidazole and vinylmethylacetamide.
A water-soluble overcoat layer coated onto a photosensitive layer, wherein the overcoat layer comprises polyvinyl alcohol and a component that is a copolymer consisting of units of 1-vinylimidazole and vinylmethylacetamide.
Dependencies are inferred from the claim text.