Abstract:
Provided is a printing plate precursor including: a support; a layer which contains a polymer on one side of the support; and a layer which contains a metal oxide obtained by hydrolyzing and polycondensing an organic metal compound or an inorganic metal compound and fine particles on the other side of the support, in which an average particle diameter of the fine particles is 0.3 µm or greater and is greater than the thickness of the layer containing a metal oxide and fine particles, and in a case where the printing plate precursors are laminated, dislocation in stacking precursors, adhesion between precursors, and scratches can be all prevented even without using interleaving paper.
Abstract:
A lithographic printing plate precursor includes, in the following order: a support, a photosensitive layer containing a sensitizing dye, a polymerization initiator, a polymerizable compound and a binder polymer; and a protective layer containing a nonionic hydrophilic group-modified polyvinyl alcohol.
Abstract:
A lithographic printing plate precursor includes, in the following order: a support; an intermediate layer containing a polyvalent cation and a polymer compound having at least one of an acid group selected from a sulfonic acid group, a carboxylic acid group and a phosphoric acid group and a salt thereof; an image-recording layer containing (i) a polymerization initiator, (ii) a polymerizable compound and (iii) a binder polymer; and a protective layer.
Abstract:
The present invention provides an infrared sensitive lithographic printing plate precursor of positive-type comprising a support having a hydrophilic surface and an image recording layer comprising: an anionic surfactant; an infrared absorbing agent; and a poly (vinyl acetal) resin, wherein the image recording layer has a configuration in which a lower layer on the side of the support and an upper layer on the side opposite thereto are disposed on the support in this order, the upper layer and/or the lower layer comprising the polyurethane resin, the anionic surfactant and the infrared absorbing agent in the same layer, or in a separate layer.
Abstract:
Provide is a lithographic printing plate precursors having excellent printing durability, staining resistance and developability as well as processes for preparing lithographic printing plates therefrom. A lithographic printing plate precursor comprising a primer layer and an image-recording layer in this order in a substrate, wherein the primer layer comprises a polymer containing a repeat unit having a carbon-carbon backbone, a -C(=O)- group directly attached thereto, a -C(=O)-NR 0 -group, a carboxyl group or a salt thereof, and an ethylenically unsaturated bond.
Abstract:
There is provided a lithographic printing plate precursor that enables image recording using a laser and that provides an excellent scumming resistance and an excellent developability while maintaining a satisfactory printing durability. Also provided are a platemaking method, and a novel polymerizable monomer. A lithographic printing plate precursor has a support, and an image recording layer disposed thereon and containing a radical polymerization initiator and a polymerizable monomer that has a sulfonamide group and at least two ethylenically unsaturated groups; a lithographic printing plate platemaking method uses this lithographic printing plate precursor; and a polymerizable monomer has a sulfonamide group and at least two ethylenically unsaturated groups.