Light-sensitive diazo resin composition containing a higher fatty acid or higher fatty acid amide
AssigneeFuji Photo Film Co., Ltd.
InventorsMasanori Imai, Mitsuru Koike, Noriaki Watanabe, Nobuyuki Kita, Tatsuji Higashi
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Abstract
A light-sensitive composition which comprises, (a) an ethylenically unsaturated addition polymerizable compound, (b) an alkaline water-soluble or swellable, and film-forming polymer, (c) a photopolymerization initiator, (d) a negative working diazo resin, and (e) at least one compound selected from the group consisting of a higher fatty acid and a higher fatty acid amide which are solid at ordinary temperatures. The light-sensitive composition is hardly influenced by oxygen and is suitable for a presensitized plate from which a printing plate is to be prepared.
Claims9
A light-sensitive composition which comprises in admixture,
- (a) an ethylenically unsaturated addition polymerizable compound;
- (b) an alkaline water-soluble or an alkaline water-swellable, and film forming polymer selected from the group consisting of a copolymer of benzyl (meth) acrylate and (meth) acrylic acid, and a copolymer of allyl (meth) acrylate and (meth) acrylic acid;
- (c) a photopolymerization initiator;
- (d) a negative working light-sensitive diazo resin;
- and
- (e) at least one compound selected from the group consisting of a higher fatty acid and a higher fatty acid amide, which are solid at ordinary temperature, wherein the components (a), (b) and (c) are contained in an amount sufficient to harden the composition upon exposure to light, the component (d) is present in an amount of 1 to 30% by weight based on the total weight of the composition, and the component (e) is contained in an amount of 0.5 to 10% by weight based on the total weight of the composition, said composition showing reduced inhibition of photopolymerization by oxygen.
Dependencies are inferred from the claim text.