摘要:
An infrared laser-sensitive positive type image recording material comprises a support; an alkali-developer-soluble first layer formed over the support; and a second layer formed over the first layer, the solubility of the second layer in alkali-developer being improved by exposure of the second layer to an infrared laser. The first layer comprises a polymer having a structural unit represented by formula (I): wherein R1 represents a hydrogen atom or a methyl group; R2 represents a hydrocarbon group having (n+1) valences and having an aliphatic ring structure having 3 to 30 carbon atoms; A represents an oxygen atom or —NR3— wherein R3 represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 10 carbon atoms; and n is an integer of from 1 to 5.
摘要:
The planographic printing plate precursor of the invention includes a recording layer capable of forming an image upon irradiation with infrared rays, wherein the recording layer comprises (A) an alkali-soluble resin having, in a main chain, a structural unit containing at least one type of bond selected from an amide bond, urea bond, urethane bond and ester bond and having at least one type of acid group selected from a phenolic hydroxyl group, sulfonamide group and active imide group, and (B) an infrared absorbing agent. The invention provides a positive-working planographic printing plate precursor excellent in printing durability and chemical resistance.
摘要:
The positive type photosensitive composition of the present invention comprises a polymer compound (A) having, in a side chain thereof, a polymerizable group or a cross-linkable group, and an infrared absorbent (B). Preferably, the polymerizable group or cross-linkable group is incorporated into molecules of the polymer compound (A) through a structural unit having this group in a side chain thereof. Specifically, the structural unit is preferably a structural unit having any one of structures represented by the following general formulae (1) to (4): wherein A, B, X each independently represents a single bond, an oxygen atom, a sulfur atom or the like; L and M each independently represent a bivalent organic group; R1 to R12 represents a hydrogen atom or a monovalent organic group; R13 to R24 each independently represents a monovalent organic group; and Y represents an oxygen atom, a sulfur atom, or a phenylene group which may have a substituent.
摘要翻译:本发明的正型感光性组合物包含在侧链具有聚合性基团或可交联基团的高分子化合物(A)和红外线吸收剂(B)。 优选地,可聚合基团或可交联基团通过其侧链中具有该基团的结构单元引入高分子化合物(A)的分子中。 具体而言,结构单元优选为具有以下通式(1)〜(4)所示的结构中的任一种的结构单元:其中,A,B,X各自独立地表示单键,氧原子,硫原子或 类似; L和M各自独立地表示二价有机基团; R 1至R 12代表氢原子或一价有机基团; R 13至R 24各自独立地表示一价有机基团; Y表示可以具有取代基的氧原子,硫原子或亚苯基。
摘要:
The present invention relates to a positive-type planographic printing plate precursor comprising: a hydrophilic substrate; an image recording layer including a novolak resin (A) and a light-to-heat conversion agent (B), disposed on the substrate, the image recording layer increasing in solubility in an aqueous alkali solution when exposed to light emitted from an infrared laser, wherein the weight average molecular weight (Mw) of the novolak resin (A) is in a range of 500 to 10000 based on polystyrene, the molecular weight being found by a gel permeation chromatographic (GPC) method using monodispersion polystyrene as a standard, and the degree of dispersion (Mw/Mn) is 1.7 or less when the weight average molecular weight (Mw) is 500 to 3000, the degree of dispersion (Mw/Mn) is 2.0 or less when the weight average molecular weight (Mw) is 3000 to 4500, and the degree of dispersion (Mw/Mn) of the novolak resin (A) fulfills the following equation: (Mw/Mn)≦{(4·Mw−1500)/5500}, when the weight average molecular weight (Mw) is 4500 to 10000.
摘要:
A positive-type image-forming material and a planographic printing plate precursor having a recording layer composed of the material on a support. The material includes (a) a water-insoluble, aqueous alkaline solution-soluble polymer compound, (b) a light-heat converting agent, and (c) a phenol including a partial structure represented by the following formula (I). Solubility of the material in an aqueous alkaline solution is increased upon heating. In the formula (I), X represents a monovalent terminal group having 2 or more carbon atoms or a linking group of —CY1Y2— or —CHY1— in which Y1 and Y2 each represent a monovalent terminal group having 1 or more carbon atoms, W represents a monovalent terminal group, and n represents an integer from 1 to 4.
摘要:
The present invention provides an image recording material onto which images can be recorded with an infrared ray, the material comprising an infrared absorbent (A), a radical-generating agent (B) and a radically polymerizable compound (C), wherein the infrared absorbent is a cyanine dye in which at least one substituent on a nitrogen atom in a heterocyclic ring at each end forms a cyclic ring which includes a methine chain.
摘要:
The invention provides an ink composition for inkjet recording, including: a component (A) that is a compound having two or more groups each of which having a specific structure; a component (B) that is at least one selected from the group consisting of organic solvents each of which having a specific structure; and (C) a colorant.
摘要:
The present invention provides an ink composition including: (A) a polymerizable compound represented by the following formula (I); (B) a polymerizable compound having a structure that is different from that of the polymerizable component (A); and (C) a photoinitiator, wherein, in the formula (I), R represents a hydrogen atom or a methyl group, X represents a divalent organic group, m represents an integer of 1 or 2, and n represents an integer of 1 to 20.
摘要:
The invention provides an ink composition which includes a polymerization initiator, a polymerizable compound, a colorant, and a high molecular compound having a repeating unit represented by the following formula (I). In formula (I), n represents an integer of from 1 to 5.
摘要:
A positive planographic printing plate precursor includes a support having disposed thereon a lower thermosensitive layer containing a water-insoluble but alkali-soluble polymer compound and an upper thermosensitive layer containing a water-insoluble but alkali-soluble polymer compound, with alkali-solubility increasing under heat, wherein (i) both the upper thermosensitive layer and the lower thermosensitive layer contain an IR absorbing dye, with the ratio of the IR absorbing dye concentration in the upper thermosensitive layer to the IR absorbing dye concentration in the lower thermosensitive layer is 1.6 to 10.0, and/or (ii) the upper thermosensitive layer and the lower thermosensitive layer contain different IR absorbing dyes, and/or (iii) at least one of the upper thermosensitive layer and the lower thermosensitive layer contains an IR absorbent having, in one molecule, at least two chromophoric groups that absorb IR light, with the chromophoric groups bonding to each other via a covalent bond.