Abstract:
An objective is to provide a planographic printing plate material capable of being exposed to infrared laser, which exhibits excellent printing durability and storage property (specifically at high humidity). Also disclosed is a planographic printing plate material comprising a hydrophilic support and provided thereon, a lower layer and an upper layer each possessing an alkali soluble resin, wherein the upper layer possesses a compound represented by Formula 1: wherein R1 represents an alkyl group having 1-6 carbon atoms, each of R2 and R3 independently represents a hydrogen atom or an alkyl group, and X− represents a non-nucleophilic anion group.
Abstract:
A polymerizable composition contains a binder polymer containing a functional group having a dipole moment of 3.8 debye or more and being represented by the formula (1), (2), (3), (4) or (5) as defined herein, a radical polymerizable compound and a radical polymerization initiator.
Abstract:
A lithographic printing plate precursor comprising: a support; an image recording layer comprising (A) an actinic ray absorber, (B) a polymerization initiator, and (C) a polymerizable compound, wherein the image recording layer is capable of being removed with at least one of a printing ink and a fountain solution; and an overcoat layer comprising an inorganic laminar compound. And a lithographic printing method comprising: mounting a lithographic printing plate precursor on a printing press; imagewise exposing the lithographic printing plate precursor with laser beams; and feeding at least one of a printing ink and a fountain solution to the lithographic printing plate precursor to remove a laser beams non-exposed area in an image recording layer; and performing printing.
Abstract:
The invention has a support, a recording layer provided on the support, and a protective layer containing a hydrophilic polymer and silica-coated organic resin fine particles provided as the uppermost layer. The organic resin fine particles are preferably composed of at least one resin selected from the group consisting of polyacrylic acid resins, polyurethane resins, polystyrene resins, polyester resins, epoxy resins, phenolic resins, and melamine resins, and the protective layer preferably contains a mica compound.
Abstract:
The present invention provides a photosensitive composition including a compound that generates a radical by application of light or heat, a polymer having a phenyl group substituted with a vinyl group on the side chain, a monomer having two or more phenyl groups substituted with a vinyl group, an infrared absorbing agent, and a compound having at least one carboxylic acid group and a weight average molecular weight of 3,000 or less. Additionally, the invention provides a planographic printing plate precursor including a substrate and a negative recording layer provided on the substrate and containing the above photosensitive composition.
Abstract:
A compound having, in its molecule, a polymethine chain structure containing a partial structure represented by the following formula (1-1), and an image forming material containing the same. In the formula (1-1), R1, R2, R3, R4, and X each independently represent a hydrogen atom, a halogen atom, or a monovalent organic group. The image forming material is useful as the image recording layer of a planographic printing plate precursor.
Abstract:
A photosensitive lithographic printing plate comprising: a support; and a polymerizable photosensitive layer that comprises: an addition-polymerizable compound having an ethylenically unsaturated double bond; a polymerization initiator; and a polymer compound having (a) a monomer represented by formula (I) and (b) a monomer represented by formula (II) as copolymerization component: wherein Rf represents a substituent containing a fluoroalkyl or perfluoroalkyl group having 9 or more fluorine atoms; n represents 1 or 2; and R1 represents a hydrogen atom or a methyl group; wherein R21 represents a hydrogen atom or a methyl group; R22 represents a divalent hydrocarbon group having a carbon number of 3 to 30 and having an aliphatic cyclic structure; A represents an oxygen atom or —NR23—; and R23 represents a hydrogen atom or a monovalent hydrocarbon group having a carbon number of 1 to 10.
Abstract translation:一种光敏平版印刷版,包括:支撑体; 和可聚合感光层,其包含:具有烯键式不饱和双键的可加成聚合化合物; 聚合引发剂; 和具有(a)由式(I)和(b)表示的单体作为共聚成分的式(I)表示的单体的高分子化合物:其中,Rf表示含有具有9个以上氟原子的氟代烷基或全氟烷基的取代基; n表示1或2; R 1表示氢原子或甲基; 其中R 21表示氢原子或甲基; R 22表示碳数为3〜30的具有脂肪族环状结构的二价烃基; A表示氧原子或-NR 23 - ; R 23表示氢原子或碳数为1〜10的一价烃基。
Abstract:
(1) A packaged body of lithographic printing plate precursors, wherein an image-recording layer or a protective layer of the outermost surface layer contains an inorganic layered compound. (2) A lithographic printing plate precursor having a protective layer containing an inorganic layered compound, and an image-recording layer containing a binder polymer. (3) A lithographic printing plate precursor having a protective layer containing an inorganic layered compound, and an image-recording layer containing an infrared absorber and an iodonium compound.
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 (A′) a polyurethane resin having a specific diol as a constituent, (B) a light-to-heat converting agent, and (C) a novolak resin.
Abstract:
A planographic printing plate precursor comprising an aluminum support having a hydrophilic front surface, and a negative recording layer provided on the front surface, wherein the negative recording layer includes a polymerizable compound, a radiation absorber, and a compound that generates a radical upon application of radiation or heat, and a Bekk smoothness of a back surface of the planographic printing plate precursor is 1000 seconds or less. Also provided are a stack of the planographic printing plate precursors and a method of making a planographic printing plate using the planographic printing plate precursor.