Abstract:
A planographic printing method including: providing a planographic printing plate precursor including a substrate and an image recording layer which is disposed on the substrate and contains (A) an infrared absorber, (B) a polymerization initiator and (C) a polymerizable compound; imagewise exposing the planographic printing plate precursor with an infrared laser; and supplying oil-based ink and an aqueous component to the exposed planographic printing plate precursor without any development treatment, so as to print an image. A region of the planographic printing plate precursor that has not been exposed with an infrared laser is removed during the printing. The polymerizable compound of (C) is represented by the following formula (1): wherein Ar1, R1, Z and n are as defined in the claims and the specification.
Abstract:
A photosensitive composition that includes a compound which generates a radical upon being heated or exposed to light; a polymer having on a side chain thereof a phenyl group substituted by a vinyl group; a monomer having in a molecule thereof at least two phenyl groups each substituted by a vinyl group; an infrared absorbent; and a dye having absorption maximum wavelength in a range from 500 to 700 nm, and an image recording material which has the photosensitive layer disposed on a support.
Abstract:
A lithographic printing plate precursor comprising a support and an image-forming layer which is capable of being removed with at least one of a printing ink and dampening water, wherein the image-forming layer contains a stratiform compound.
Abstract:
It is an object of the present invention to provide that printing plate materials of the present invention exhibit excellent printing durability, less “out of color” registration, and improved printing image quality. Disclosed is a printing plate material possessing an image formation layer on one surface of a polyester support and not less than two backing layers on the other surface, wherein at least one of the backing layers is an electrically conductive layer, at least one of the backing layer is a layer containing at least one resin selected from polyester resin, acryl resin, acryl modified polyester resin and cellulose ester resin provided on the electrically conductive layer, and at least one of the backing layers contains an organic matting agent.
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:
A lithographic printing plate precursor comprising a hydrophilic support, an undercoat layer and a laser-sensitive photopolymerizable layer, wherein the undercoat layer contains a copolymer containing (a1) a repeating unit having at least one ethylenically unsaturated bond and (a2) a repeating unit having at least one functional group capable of interacting with a surface of the support, and the repeating unit (a1) is a repeating unit represented by the formula (A1) as defined herein.
Abstract:
A lithographic printing plate precursor comprising a support and an image recording layer capable of drawing an image by exposure with an infrared laser, wherein the image recording layer contains (A) an infrared absorbent and (B) an iodonium salt represented by the following formula (I): Ar1—I{circle around (+)}—Ar2Z{circle around (−)} (1) wherein Ar1 and Ar2 each represents a benzene ring which may have a substituent, provided that two benzene rings are differing in the substituent from each other and a total of Hammett's σ values of substituents on at least one of the benzene rings is a negative value, and Z represents a counter anion.
Abstract:
A lithographic printing plate precursor having a good press life with a practical energy amount, which can be on-press developed without passing through a development processing step after recording an image by a laser of emitting an infrared ray, is provided, which is a lithographic printing plate precursor capable of performing a development and printing by loading on a printing press after imagewise exposure and supplying an oily ink and an aqueous component, the lithographic printing plate precursor comprising a support and an image recording layer, wherein the image recording layer comprises (A) a polymerization initiator, (B) a polymerizable monomer, (C) a binder polymer, and (D) a crosslinked resin particle having a reactive group or (F) a microcapsule containing a polymerizable monomer in the capsule wall, and the image recording layer is imagewise polymerization-curable upon irradiation of actinic ray.
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:
The present invention provides a polymerizable composition comprising (A) a compound including a polymerizable unsaturated group and (B) a macromolecular compound including, at a side chain thereof, a structure represented by the following general formula (I): Z−M+ General formula (I) wherein Z− represents COCOO−, COO−, SO3−, or SO2—N−—R where R represents a monovalent organic group and M+ represents an onium cation. The present invention also provides a negative type planographic printing plate precursor responsive to an infrared laser, the precursor being superior in recording sensitivity and printing durability and using the polymerizable compound as a recording layer.
Abstract translation:本发明提供一种聚合性组合物,其含有(A)包含聚合性不饱和基团的化合物和(B)高分子化合物,其侧链具有下述通式(I)所示的结构: -formulae description =“在线公式”end =“lead”?> Z - SUP> M + SUPER +通用公式(I)<?in-line-formula description =“ 其中Z 0表示COCOO,SO 3,SO 3,SO 3, 或其中R代表一价有机基团,并且M + 代表鎓阳离子。 本发明还提供了响应于红外激光器的负型平版印刷版前体,其前体具有优异的记录灵敏度和印刷耐久性,并且使用可聚合化合物作为记录层。