Abstract:
An infrared-sensitive photosensitive composition comprising: (A) a resin; (B) a novolak resin; and (C) a light-to-heat converting substance, wherein the resin (A) has, as copolymer components, at least: (1) a (meth)acrylic acid or a monomer represented by formula (I) as defined herein; and (2) at least one compound selected from the group consisting of a (meth)acrylic ester, a (meth)acrylamide derivative, and a styrene derivative.
Abstract:
Disclosed is a printing plate material comprising a support and provided thereon, a light sensitive layer containing a sensitizing dye, which is insoluble in water and soluble in an organic solvent, and particles to which the sensitizing dye is adhered.
Abstract:
A polymerizable composition containing: (A) a polyurethane compound soluble or swellable in water or an aqueous alkali solution which is obtained by reacting at least one diol compound having an unsaturated bond in a main chain and having a molecular weight of 500 or more with at least one polyisocyanate compound; (B) a radical initiator; and (C) a photothermal converting agent, and a polymerizable composition containing: (A′) a polyurethane resin which is soluble or swellable in water or an aqueous alkali solution and has an unsaturated carbon-carbon bond in its side chain; and (B) a radical initiator, wherein the polyurethane resin (A′) is obtained by adding an epoxy compound having an unsaturated carbon-carbon bond to a polyurethane resin having carboxyl group.
Abstract:
A lithographic printing plate precursor comprising a support having provided thereon an image-recording layer containing a substance that absorbs light to generate heat, an aqueous alkali solution-soluble resin having phenolic hydroxy group and a polyvinyl acetal resin including an acid group having a pKa of not more than 5.
Abstract:
A lithographic printing plate material is disclosed, comprising a flexible support having thereon a hydrophilic layer and an image forming layer, wherein the flexible support having the hydrophilic layer exhibits a transmission density of 0.5 to 1.2, and the outermost surface of an unexposed area of the image forming layer exhibiting a glossiness of 0.1 to 10. A printing method is also disclosed.
Abstract:
Disclosed are a printing plate material capable of being folded by heating, a printing process employing the printing plate material and a process of folding the printing plate material, the printing plate material comprising a support and provided thereon, an image formation layer, the support being a polyester sheet with a thickness dispersion of not more then 10%.
Abstract:
A lithographic printing plate precursor comprises an image forming layer containing at least one polymer compound having a fluoroaliphatic group on the side chain, wherein the fluoroaliphatic group is derived from a fluoroaliphatic compound produced by a telomerization or oligomerization method.
Abstract:
A lithographic printing plate precursor comprises: a support; and an image-forming layer including a copolymer containing a specific fluoroaliphatic group and a repeating unit corresponding to at least one of a poly(oxyalkylene) acrylate and a poly(oxyalkylene) methacrylate.
Abstract:
An infrared-sensitive photosensitive composition comprising (A) an alkali-soluble resin containing a repeating unit having an alkylene oxide group, and (B) a light-to-heat converting agent; and an infrared-sensitive photosensitive composition comprising (Anull) a polyurethane resin having a specific diol as a constituent, (B) a light-to-heat converting agent, and (C) a novolak resin.
Abstract:
A lithographic printing plate precursor comprising: an aluminum support; an interlayer; and a photosensitive layer in this order, wherein the aluminum support is surface-roughened and has an anodic oxide coating, the interlayer comprises a compound comprising a di- or more valent metal element, and the photosensitive layer comprises an infrared absorbent, a radical generator and a radical polymerizable compound.