WO2018043124A1 - Procédé de fabrication de plaque pour plaque d'impression planographique et eau de mouillage pour impression planographique - Google Patents

Procédé de fabrication de plaque pour plaque d'impression planographique et eau de mouillage pour impression planographique Download PDF

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WO2018043124A1
WO2018043124A1 PCT/JP2017/029409 JP2017029409W WO2018043124A1 WO 2018043124 A1 WO2018043124 A1 WO 2018043124A1 JP 2017029409 W JP2017029409 W JP 2017029409W WO 2018043124 A1 WO2018043124 A1 WO 2018043124A1
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group
dampening water
acid
dampening
printing plate
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PCT/JP2017/029409
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English (en)
Japanese (ja)
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浩二 園川
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富士フイルム株式会社
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/12—Printing plates or foils; Materials therefor non-metallic other than stone, e.g. printing plates or foils comprising inorganic materials in an organic matrix
    • B41N1/14—Lithographic printing foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials

Definitions

  • the present invention relates to a method for making a lithographic printing plate, and a fountain solution for lithographic printing. More particularly, the present invention relates to a method for making a lithographic printing plate capable of image exposure by a laser and on-press development, and a fountain solution for lithographic printing.
  • a lithographic printing plate precursor for example, there is known a lithographic printing plate precursor provided with an image forming layer in which hydrophobic thermoplastic polymer particles are dispersed in a hydrophilic binder on a hydrophilic support (see Patent Document 1).
  • This lithographic printing plate precursor can be exposed to light by an infrared laser to form an image by thermally fusing hydrophobic thermoplastic polymer particles.
  • the object of the present invention is to suppress the coloration of dampening water even if the on-press development type lithographic printing plate precursor is repeatedly developed on the machine, thereby preventing the non-image area of the printed matter from being contaminated and having excellent printing durability
  • a lithographic printing plate making method that can provide a lithographic printing plate, and providing a dampening water for lithographic printing.
  • a plate-making method in which a planographic printing plate precursor is supplied with a fountain solution and a printing ink and then developed on the machine, wherein the planographic printing plate precursor contains a dye having absorption in at least visible light wavelength region, A plate-making method, wherein the dampening water contains at least one compound selected from the group consisting of hydrogen peroxide, percarbonate, hyposulfite, thiourea dioxide, and ascorbic acid or derivatives thereof.
  • the lithographic printing plate precursor contains thermoplastic polymer fine particles.
  • the dye is an infrared absorbing dye.
  • the organic peracid precursor is tetraacetylethylenediamine, pentaacetylglucose, sodium benzenesulfonate having 8 to 12 carbon atoms and alkanoyloxy group, and benzoic acid having 8 to 12 carbon atoms and alkanoyloxy group.
  • a dampening solution used for lithographic printing comprising at least one compound selected from the group consisting of hydrogen peroxide, percarbonate, hyposulfite, thiourea dioxide, and ascorbic acid or a derivative thereof , Dampening water.
  • the organic peracid precursor is tetraacetylethylenediamine, pentaacetylglucose, sodium benzenesulfonate having 8 to 12 carbon atoms and alkanoyloxy group, and benzoic acid having 8 to 12 carbon atoms and alkanoyloxy group.
  • the wetness according to any one of (10) to (16), wherein the dampening water is used for on-press development of a lithographic printing plate precursor containing a dye having absorption at least in the visible light wavelength range. Shimizu.
  • a lithographic printing plate making method that can provide a lithographic printing plate, and a dampening water for lithographic printing can be provided.
  • FIG. 1 is a schematic view of an anodizing apparatus used for anodizing treatment in the production of a lithographic printing plate support.
  • the dampening water of the present invention is characterized by containing at least one specific oxidizing agent or reducing agent.
  • Specific oxidizing agents contained in the dampening water of the present invention are hydrogen peroxide and percarbonate, and specific reducing agents are hyposulfite, thiourea dioxide, ascorbic acid or derivatives thereof. That is, the dampening water of the present invention comprises at least one compound (hereinafter also referred to as a specific compound) selected from the group consisting of hydrogen peroxide, percarbonate, hyposulfite, thiourea dioxide, and ascorbic acid or a derivative thereof. contains.
  • the dampening water of the present invention can achieve the above-mentioned subject by containing the above-mentioned specific compound.
  • the content of each component contained in the dampening water is the content of each component contained in the dampening water at the time of use unless otherwise noted.
  • Hydrogen peroxide is a compound represented by H 2 O 2 , and oxydol, which is a commercially available 3% aqueous solution of hydrogen peroxide, can also be appropriately used. It may exhibit a reducing action on stronger oxidizing agents such as potassium permanganate but generally exhibits an oxidizing action.
  • Percarbonate Percarbonate is a peroxide which dissolves in water to generate hydrogen peroxide.
  • specific examples of the percarbonate include sodium percarbonate, potassium percarbonate and the like, and from the viewpoint of versatility, sodium percarbonate is preferred.
  • Sodium percarbonate is also referred to as sodium hydrogen peroxide or sodium hydrogen peroxide adduct, and is an addition compound in which sodium carbonate and hydrogen peroxide are mixed in a molar ratio of 2: 3.
  • the chemical formula is represented as 2Na 2 CO 3 .3H 2 O 2 .
  • sodium percarbonate As a compound also commonly referred to as sodium percarbonate, there is disodium peroxodicarbonate (Na 2 C 2 O 6 ), but in the present invention, sodium percarbonate refers to sodium carbonate hydrogen peroxide.
  • sodium percarbonate refers to sodium carbonate hydrogen peroxide.
  • One of these percarbonates may be used alone, or two or more of these percarbonates may be used in combination.
  • the dampening solution preferably further contains an organic peracid precursor.
  • the organic peracid precursor is a compound which generates an organic peracid by peroxide such as hydrogen peroxide, and specific examples thereof include tetraacetylethylenediamine, pentaacetylglucose, sodium octanoyloxybenzenesulfonate, nonano Sodium yloxybenzene sulfonate, sodium decanoyl oxybenzene sulfonate, sodium undecanoyloxy benzene sulfonate, sodium dodecanoyloxy benzene sulfonate, octanoyloxybenzoic acid, nonanoyloxybenzoic acid, decanoyloxybenzoic acid, undeca Noyloxybenzoic acid, dodecanoyloxybenzoic acid, oct
  • organic peracids generated from organic peracid precursors exhibit bactericidal activity and also have the effect of reducing the viable count of microorganisms (Kitaka Miyamae, Kei Matsunaga, Seiichi Tobe, Kenji Takahashi, Haruo Yoshimura, Teruhisa Satsuki Proceedings of the 28th Symposium on Cleaning, p. 157-p. 165 (1996)).
  • organic peracid precursors which generate organic peracids having 8 to 12 carbon atoms are particularly preferred.
  • specific examples thereof include decanoyl benzoic acid, sodium dodecanoyloxy benzene sulfonate, sodium nonanoyloxy benzene sulfonate and the like.
  • 4-decanoyloxybenzoic acid and sodium 4-nonanoyloxybenzenesulfonate are more preferable from the viewpoint of the color suppression effect.
  • the effect of the organic peracid precursor is small if it is too small or too large with respect to (1) hydrogen peroxide or (2) percarbonate, and when it is added in an equimolar amount, particularly excellent effects can be obtained.
  • hyposulfite examples include sodium hyposulfite and potassium hyposulfite.
  • Sodium hyposulfite is also referred to as sodium hydrosulfite or sodium dithionite, and is a reducing bleach represented by the chemical formula Na 2 S 2 O 4 .
  • Thiourea dioxide is a reducing agent also called formamidinesulfinic acid and aminomethanesulfinic acid, and its chemical formula is represented by H 2 NC (: NH) SO 2 H.
  • Sulfoxylic acid (H 2 SO 2 ) is generated in water, and the sulfoxylic acid exhibits a reducing action.
  • Ascorbic acid or derivative thereof As ascorbic acid or a derivative thereof, for example, L-ascorbic acid, D-ascorbic acid, sodium ascorbate, sodium erythorbate etc. may be mentioned. Among them, L-ascorbic acid is particularly preferable because of its good solubility in aqueous media and high safety. L-ascorbic acid is represented by the following formula and is known as vitamin C.
  • the content of hydrogen peroxide, percarbonate, hyposulfite, thiourea dioxide, ascorbic acid or derivative thereof in the dampening water of the present invention is preferably 0.2 to 13% by mass in dampening water. More preferably, it is 0.5 to 10% by mass, and still more preferably 2.0 to 6.0% by mass.
  • a water-soluble polymer compound may be further added to the dampening water of the present invention.
  • a water-soluble polymer compound include gum arabic, starch derivatives (eg, dextrin, enzyme-degraded dextrin, hydroxypropylated enzyme-degraded dextrin, carboxymethylated starch, phosphated starch, octenylsuccinified starch, etc.), alginate, Natural products of cellulose derivatives and modified products thereof (eg carboxymethylcellulose, carboxyethylcellulose, hydroxyethylcellulose, methylcellulose, hydroxypropylmethylcellulose, their glyoxal modified products etc.), polyvinyl alcohol and its derivatives, polyvinylpyrrolidone, polyacrylamide and its copolymer Combination, such as combination, polyacrylic acid and its copolymer, vinyl methyl ether / maleic anhydride copolymer, vinyl acetate / maleic an
  • polyvinyl pyrrolidone can be particularly preferably used.
  • Polyvinylpyrrolidone contained in dampening water means a homopolymer of vinylpyrrolidone.
  • the polyvinylpyrrolidone has a molecular weight of 200 to 3,000,000, preferably 300 to 500,000, more preferably 300 to 100,000, and particularly preferably 300 to 30,000.
  • Polyvinyl pyrrolidone may be used alone or in combination of two or more different in molecular weight. It can also be used in combination with low molecular weight polyvinyl pyrrolidone, such as vinyl pyrrolidone oligomers having a degree of polymerization of 3-5.
  • polyvinyl pyrrolidone can be used.
  • various great ones such as K-15, K-30, K-60, K-90, and K-120 manufactured by ISP can be used.
  • the content of polyvinyl pyrrolidone in the dampening water is suitably 0.001 to 0.3% by mass, preferably 0.005 to 0.2% by mass.
  • the dampening solution preferably also contains at least one selected from the group consisting of saccharides and glycerin.
  • the saccharides can be selected from monosaccharides, disaccharides, oligosaccharides and the like, including sugar alcohols obtained by hydrogenation.
  • the saccharides may be used alone or in combination of two or more.
  • Glycerin may be used alone or in combination with sugars.
  • the content of at least one compound selected from the group consisting of saccharides and glycerin in dampening water is suitably 0.01 to 1% by mass, preferably 0.05 to 0.5% by mass.
  • dampening solution generally in the acidic region, ie, in the range of around pH 3 to 6. If the pH is less than 3, the etching effect on the lithographic printing plate support becomes strong, and the printing durability may be reduced.
  • an organic acid and / or an inorganic acid or a salt thereof is generally added as a pH adjuster.
  • Preferred organic acids include, for example, citric acid, ascorbic acid, malic acid, tartaric acid, lactic acid, acetic acid, glycolic acid, gluconic acid, acetic acid, hydroxyacetic acid, oxalic acid, malonic acid, levulinic acid, sulfanilic acid, p-toluenesulfonic acid, Phytic acid, organic phosphonic acid and the like can be mentioned.
  • Preferred inorganic acids include, for example, phosphoric acid, nitric acid, sulfuric acid and polyphosphoric acid.
  • alkali metal salts, alkaline earth metal salts or ammonium salts of organic acids and / or inorganic acids, and organic amine salts are also suitably used.
  • the organic acids, inorganic acids and / or salts thereof may be used alone or in combination of two or more.
  • the dampening water may contain an alkali metal hydroxide, an alkali metal phosphate, an alkali metal carbonate, a silicate and the like, and may be used in an alkali region of about pH 7-11.
  • a chelate compound can also be added to the dampening water of the present invention.
  • dampening water is used by diluting tap water, well water, etc. to the concentrated composition.
  • calcium ions and the like contained in the diluted tap water and well water may affect printing, which may cause the printed matter to be easily soiled.
  • the above-mentioned drawbacks can be eliminated by adding a chelate compound.
  • Preferred chelate compounds include, for example, ethylenediaminetetraacetic acid, its potassium salt, its sodium salt; diethylenetriaminepentaacetic acid, its potassium salt, its sodium salt; triethylenetetraminehexaacetic acid, its potassium salt, its sodium salt; hydroxyethylethylenediaminetriacetic acid Nitrilotriacetic acid, its potassium salt, its sodium salt, 1,2-diaminocyclohexanetetraacetic acid, its potassium salt, its sodium salt, 1,3-diamino-2-propanol tetraacetic acid, its potassium salt, its sodium salt; Aminopolycarboxylic acids such as potassium salt, its sodium salt, etc.
  • organic phosphonic acids such as aminotri (methylene phosphonic acid), their potassium salts, their sodium salts etc. and phosphonoalkanetricarboxylic acids.
  • salts of organic amines are also effective.
  • the chelate compound is selected from those which stably exist in the dampening water and do not inhibit the printability.
  • the amount of the chelate compound added is suitably 0.001 to 3% by mass, preferably 0.01 to 1% by mass, in dampening water.
  • a preservative may be added to the dampening solution.
  • preservatives include benzoic acid and derivatives thereof, phenol or derivatives thereof, formalin, imidazole derivatives, sodium dehydroacetate, 4-isothiazolin-3-one derivatives, benztriazole derivatives, derivatives of amidine or guanidine, quaternary ammonium Salts, derivatives of pyridine, quinoline or guanidine, derivatives of diazine or triazole, derivatives of oxazole or oxazine, halogenonitropropane compounds, bromonitropropanol based bromonitropropanol, 1,1-dibromo-1-nitro-2-ethanol, 3-bromo-3-nitropentane-2,4-diol and the like.
  • the amount added is an amount that exerts a stable effect on bacteria, mold, yeast and the like, and it varies depending on the type of bacteria, mold and yeast, but 0.0001 to 1.0 mass to dampening water A range of% is preferred. Further, it is preferable to use two or more preservatives which are effective against various fungi, bacteria and yeast.
  • the dampening solution may further contain an antirust agent, an antifoaming agent, and the like.
  • the antirust agent include benzotriazole, 5-methylbenzotriazole, thiosalicylic acid, benzimidazole and derivatives thereof.
  • a silicon antifoamer is preferable, and any of an emulsion dispersion type and a solubilization type can be used therein.
  • the dampening water may further contain corrosion inhibitors such as magnesium nitrate, zinc nitrate, calcium nitrate, sodium nitrate, potassium nitrate, lithium nitrate, ammonium nitrate, hardeners such as chromium compounds and aluminum compounds, cyclic ethers: for example 4-butyrolactone And the like, water-soluble surface-active organic metal compounds described in JP-A-61-193893, etc. can be added in the range of 0.0001 to 1% by mass.
  • corrosion inhibitors such as magnesium nitrate, zinc nitrate, calcium nitrate, sodium nitrate, potassium nitrate, lithium nitrate, ammonium nitrate
  • hardeners such as chromium compounds and aluminum compounds, cyclic ethers: for example 4-butyrolactone And the like, water-soluble surface-active organic metal compounds described in JP-A-61-193893, etc. can be added in the range of 0.0001 to 1% by mass.
  • a small amount of surfactant may be added to the dampening solution.
  • an anionic surfactant fatty acid salts, abietic acid salts, hydroxyalkane sulfonates, alkane sulfonates, dialkyl sulfosuccinates, linear alkyl benzene sulfonates, branched alkyl benzene sulfonates, alkyl naphthalene Sulfonates, alkyl phenoxy polyoxyethylene propyl sulfonates, polyoxyethylene alkyl sulfophenyl ether salts, N-methyl-N-oleyl taurine sodiums, N-alkyl sulfosuccinic acid monoamide disodium salts, petroleum sulfonates, Hardened castor oil, sulfated beef tallow oil, sulfate ester salts of fatty acid alkyl ester, alkyl sulfate ester salts,
  • nonionic surfactants include polyoxyalkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene polystyryl phenyl ether, polyoxyethylene polyoxypropylene alkyl ether, glycerin fatty acid partial esters, sorbitan fatty acid partial esters , Pentaerythritol fatty acid partial esters, propylene glycol mono fatty acid partial esters, sucrose fatty acid partial esters, polyoxyethylene sorbitan fatty acid partial esters, polyoxyethylene sorbitol fatty acid partial esters, polyglycerin fatty acid partial esters, polyoxy Ethylenated castor oils, polyoxyethylene glycerin fatty acid partial esters, fatty acid diethanolamides, N, N-bis-2-hydroxy Rukiruamin, polyoxyethylene alkylamine, triethanolamine fatty acid esters, such as trialkylamine oxides.
  • polyoxyethylene alkylphenyl ethers polyoxyethylene al
  • cationic surfactants include alkylamine salts, quaternary ammonium salts, polyoxyethylene alkylamine salts, polyethylene polyamine derivatives and the like.
  • amphoteric surfactants include alkyl imidazolines. Further, a fluorine-based surfactant can be mentioned.
  • a fluorine-based anionic surfactant a perfluoroalkylsulfonic acid salt, a perfluoroalkylcarboxylic acid salt, a perfluoroalkylphosphate, a fluorine-based nonionic surfactant
  • Perfluoroalkylethylene oxide adducts, perfluoroalkylpropylene oxide adducts, and fluorinated cationic surfactants include perfluoroalkyltrimethyl ammonium salts and the like.
  • the content of the surfactant is preferably 10% by mass or less, and preferably 0.01 to 3.0% by mass, in consideration of foaming.
  • the dampening water can contain glycols and / or alcohols as a wetting agent.
  • a wetting agent for example, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, tetraethylene glycol monoethyl ether Ethylene glycol monopropyl ether, diethylene glycol monopropyl ether, triethylene glycol monopropyl ether, tetraethylene glycol monopropyl ether, ethylene glycol monoisopropyl ether, diethylene glycol monoisopropyl ether, triethylene glycol monoisopropyl ether, tetraethylene glycol monopropyl ether Lengucol monoisopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monobuty
  • the balance as a component of dampening water is water.
  • the dampening solution is generally concentrated and commercialized on a commercial basis. Accordingly, concentrated damp water can be obtained as an aqueous solution in which the above-mentioned various components are dissolved, using water, preferably pure water. This concentrated dampening solution is used after being diluted by about 10 to 200 times with tap water, well water or the like at the time of normal use.
  • the dampening water of the present invention can be added with about 3 to 6% of an organic solvent such as isopropyl alcohol at the time of use.
  • the amount of dampening solution supplied onto the lithographic printing plate precursor depends on the specific composition of the dampening solution, etc., but the thickness is preferably 0.1 to 5 ⁇ m on the lithographic printing plate precursor, and 0. It is more preferable that the thickness be 5 to 3 ⁇ m.
  • the dampening solution can be used at any temperature, but usually 10 to 50 ° C. is preferred.
  • the lithographic printing plate precursor used in the plate making method according to the present invention has an image recording layer on a support.
  • the lithographic printing plate precursor may optionally have a subbing layer between the support and the image recording layer, and a protective layer on the image recording layer.
  • the lithographic printing plate precursor contains a dye having absorption in at least the visible wavelength region.
  • Dyes having absorption at least in the visible light wavelength region include dyes usually contained in a lithographic printing plate precursor, and representative examples include the infrared recording agent, colorant, print-out agent and the like in the image recording layer Included are dyes having absorption at least in the visible wavelength region. These are described in detail below.
  • the image recording layer is an image recording layer whose non-image area is removed by at least one of dampening water and printing ink on a printing press.
  • the image recording layer contains an infrared absorber, a polymerization initiator, a polymerizable compound, and a binder polymer (hereinafter, also referred to as an image recording layer A).
  • the image recording layer contains an infrared ray absorbent, a polymerization initiator, a polymerizable compound, and a polymer compound in the form of fine particles (hereinafter also referred to as an image recording layer B).
  • the image recording layer contains an infrared ray absorbing agent and thermoplastic polymer fine particles (hereinafter also referred to as an image recording layer C).
  • the image recording layer A contains an infrared absorber, a polymerization initiator, a polymerizable compound and a binder polymer. The components of the image recording layer A will be described below.
  • the infrared absorber has a function of converting the absorbed infrared ray into heat and a function of being excited by the infrared ray to perform electron transfer and / or energy transfer to a polymerization initiator described later.
  • the infrared absorbing agent is preferably a dye or a pigment having an absorption maximum at a wavelength of 760 to 1200 nm, more preferably a dye.
  • JP-A-2014-104631 As the dye, those described in paragraph Nos. [0082] to [0088] of JP-A-2014-104631 can be used, the contents of which are incorporated herein. Further, a thermal decomposition type infrared absorber disclosed in European Patent No. 1910082 and European Patent No. 2072570 is also preferably used.
  • the particle size of the pigment is preferably 0.01 to 1 ⁇ m, and more preferably 0.01 to 0.5 ⁇ m.
  • known dispersion techniques used for ink production, toner production, etc. can be used. The details are described in "Latest Pigment Application Technology” (CMC Publishing, 1986).
  • the infrared absorber may be used alone or in combination of two or more.
  • the content of the infrared absorber is preferably 0.05 to 30 parts by mass, more preferably 0.1 to 20 parts by mass, particularly preferably 0.2 to 10 parts by mass with respect to 100 parts by mass of the total solid content of the image recording layer. It is a mass part.
  • the polymerization initiator is a compound that initiates and accelerates the polymerization of the polymerizable compound.
  • a polymerization initiator a known thermal polymerization initiator, a compound having a small bond dissociation energy, a photopolymerization initiator and the like can be used.
  • radical polymerization initiators described in paragraph Nos. [0092] to [0106] of JP-A-2014-104631 can be used, and the contents thereof are incorporated in the present specification.
  • preferred compounds include onium salts, in particular iodonium salts and sulfonium salts.
  • Preferred specific compounds among the respective salts are the same as the compounds described in paragraphs [0104] to [0106] of JP-A-2014-104631, the contents of which are incorporated herein.
  • the content of the polymerization initiator is preferably 0.1 to 50% by mass, more preferably 0.5 to 30% by mass, and particularly preferably 0.8 to 20% by mass with respect to the total solid content of the image recording layer. Within this range, better sensitivity and better resistance to staining of non-image areas during printing can be obtained.
  • the polymerizable compound is an addition polymerizable compound having at least one ethylenically unsaturated double bond, and is selected from compounds having at least one, preferably two or more terminal ethylenically unsaturated bonds. These have chemical forms, such as a monomer, a prepolymer, ie, a dimer, a trimer and an oligomer, or mixtures thereof, for example.
  • the polymerizable compounds described in paragraphs [0109] to [0113] of JP-A-2014-104631 can be used, and the contents thereof are incorporated in the present specification.
  • tris (acryloyloxyethyl) isocyanurate, bis (acryloyloxyethyl) hydroxyethyl isocyanurate and the like from the viewpoint of being excellent in the balance of the hydrophilicity related to the on-press developability and the polymerization ability related to the printing durability.
  • isocyanuric acid ethylene oxide modified acrylates are particularly preferred.
  • the details of the method of use such as the structure of the polymerizable compound, single use or combined use, and the addition amount can be arbitrarily set according to the performance design of the final lithographic printing plate precursor.
  • the polymerizable compound is used in an amount of preferably 5 to 75% by mass, more preferably 10 to 70% by mass, and particularly preferably 15 to 60% by mass, based on the total solid content of the image recording layer.
  • the binder polymer is mainly used for the purpose of improving the film strength of the image recording layer.
  • As the binder polymer conventionally known ones can be used, and polymers having film properties are preferable. Among them, acrylic resin, polyvinyl acetal resin, polyurethane resin and the like are preferable.
  • a suitable binder polymer it has a crosslinkable functional group for improving the film strength of the image portion as described in JP-A-2008-195018, in the main chain or side chain, preferably in the side chain The thing is mentioned.
  • the crosslinkable groups form crosslinks between polymer molecules to accelerate curing.
  • the crosslinkable functional group is preferably an ethylenically unsaturated group such as (meth) acrylic group, vinyl group, allyl group or styryl group, an epoxy group or the like, and the crosslinkable functional group is introduced into the polymer by polymer reaction or copolymerization.
  • a reaction of an acrylic polymer having a carboxy group in a side chain or a polyurethane with glycidyl methacrylate, or a reaction of a polymer having an epoxy group with an ethylenically unsaturated group-containing carboxylic acid such as methacrylic acid can be used.
  • the content of the crosslinkable group in the binder polymer is preferably 0.1 to 10.0 mmol, more preferably 0.25 to 7.0 mmol, particularly preferably 0.5 to 5.5 mmol per 1 g of the binder polymer. .
  • the binder polymer preferably has a hydrophilic group.
  • the hydrophilic group contributes to imparting on-press developability to the image recording layer.
  • the coexistence of the crosslinkable group and the hydrophilic group makes it possible to achieve both printing durability and on-press developability.
  • the hydrophilic group includes, for example, a hydroxy group, a carboxy group, an alkylene oxide structure, an amino group, an ammonium group, an amido group, a sulfo group, a phosphoric acid group and the like, and among them, an alkylene oxide unit having 2 or 3 carbon atoms An alkylene oxide structure having 1 to 9 is preferable.
  • the binder polymer can be provided with a hydrophilic group, for example, by copolymerizing a monomer having a hydrophilic group.
  • a lipophilic group such as an alkyl group, an aryl group, an aralkyl group or an alkenyl group can also be introduced.
  • a lipophilic group containing monomers such as methacrylic acid alkylester.
  • the binder polymer preferably has a weight average molecular weight (Mw) of 2,000 or more, more preferably 5,000 or more, and still more preferably 10,000 to 300,000.
  • Mw weight average molecular weight
  • the content of the binder polymer is suitably 3 to 90% by mass, preferably 5 to 80% by mass, and more preferably 10 to 70% by mass, with respect to the total solid content of the image recording layer.
  • a polymer compound having a polymer chain bonded to the nucleus by a sulfide bond, with a polyfunctional thiol having 6 to 10 functions as a core, and the polymer chain has a polymerizable group (Hereafter, it is also called a star-shaped polymer compound.)
  • a star-shaped polymer compound Is mentioned.
  • Specific examples of the star polymer compound include those described in paragraph Nos. [0153] to [0157] of JP-A-2012-148555 and JP-A-2014-104631, the contents of which are incorporated herein by reference. It is incorporated in the specification.
  • the image recording layer A can contain other components described below, as needed.
  • the image recording layer may contain a low molecular weight hydrophilic compound in order to improve the on-press developability without reducing the printing durability.
  • a low molecular weight hydrophilic compound for example, as water-soluble organic compounds, glycols such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol and the like, ethers or ester derivatives thereof, glycerin, Polyols such as pentaerythritol, tris (2-hydroxyethyl) isocyanurate, organic amines such as triethanolamine, diethanolamine and monoethanolamine and salts thereof, organic sulfones such as alkyl sulfonic acid, toluene sulfonic acid and benzene sulfonic acid Acids and salts thereof, organic sulfamic acids such as alkyl sulfamic acids and salts thereof, organic sulfuric acids
  • organic sulfonate examples include those described in paragraphs [0026] to [0031] of JP-A-2007-276454 and paragraphs [0020] to [0047] of JP-A-2009-154525.
  • a compound etc. are mentioned.
  • the salt may be a potassium salt or a lithium salt.
  • Preferred betaines are compounds having 1 to 5 carbon atoms in the hydrocarbon substituent to the nitrogen atom, and specific examples thereof include trimethyl ammonium acetate, dimethyl propyl ammonium acetate, 3-hydroxy-4-trimethyl.
  • the low molecular weight hydrophilic compound has a small hydrophobic part structure and hardly has a surfactant activity, and dampening water penetrates the exposed part (image part) of the image recording layer to reduce the hydrophobicity and the film strength of the image part.
  • the ink receptivity and the printing durability of the image recording layer can be well maintained.
  • the addition amount of the low molecular weight hydrophilic compound is preferably 0.5 to 20% by mass with respect to the total solid content of the image recording layer. 1 to 15% by mass is more preferable, and 2 to 10% by mass is more preferable. In this range, good on-press developability and press life can be obtained.
  • the compounds may be used alone or in combination of two or more.
  • an oil-receptive agent such as a phosphonium compound, a nitrogen-containing low molecular weight compound, or an ammonium group-containing polymer can be used to improve the inking property.
  • these compounds function as a surface coating agent for the inorganic stratiform compound and have an effect of preventing the decrease in the adhesion during printing by the inorganic stratiform compound.
  • the content of the oil-sensitizing agent is preferably 0.01 to 30.0% by mass, more preferably 0.1 to 15.0% by mass, and most preferably 1 to 10% by mass, with respect to the total solid content of the image recording layer. More preferable.
  • a dye having a large absorption in the visible light region can be used as a colorant for an image.
  • Oil Yellow # 101, Oil Yellow # 103, Oil Pink # 312, Oil Green BG, Oil Blue BOS, Oil Blue # 603, Oil Black BY, Oil Black BS, Oil Black T-505 (Oriental Chemical Kogyo Co., Ltd., Victoria Pure Blue, Crystal Violet (CI 42 555), Methyl Violet (CI 4 25 35), Ethyl Violet, Rhodamine B (CI 145 170 B), Malachite Green (CI 4 2000), Methylene Blue (CI 5 2015), and JP 62-293 247 And dyes described in Japanese Patent Application Laid-Open No.
  • pigments such as phthalocyanine pigments, azo pigments, carbon black and titanium oxide can also be used.
  • the use of a coloring agent has the advantage that the image area after image formation and the non-image area can be easily distinguished.
  • the amount of the colorant added is preferably 0.01 to 10% by mass with respect to the total solid content of the image recording layer.
  • a compound (print-out agent) that changes color by an acid or a radical can be used to form a print-out image.
  • various dyes such as diphenylmethane type, triphenylmethane type, thiazine type, oxazine type, xanthene type, anthraquinone type, iminoquinone type, azo type and azomethine type are effectively used.
  • Specific examples include brilliant green, ethyl violet, methyl green, crystal violet, basic fukushin, methyl violet 2B, quinaldine red, rose bengal, methanyl yellow, thymol sulfophthalein, xylenol blue, methyl orange, para methyl red, Congo Fred, Benzopurpurin 4B, ⁇ -Naphthyl Red, Nile Blue 2B, Nile Blue A, Methyl Violet, Maracaide Green, Parafuxin, Victoria Pure Blue BOH (manufactured by Hodogaya Chemical Co., Ltd.), Oil Blue # 603 (Orient Chemical Industrial Co., Ltd., Oil Pink # 312 (Orient Chemical Industry Co., Ltd.), Oil Red 5 B (Orient Chemical Industry Co., Ltd.), Oil Scarlet # 308 (Orient) Gakuin Industrial Co., Ltd.
  • Oil Red OG (Orient Chemical Industry Co., Ltd.), Oil Red RR (Orient Chemical Industry Co., Ltd.), Oil Green # 502 (Orient Chemical Industry Co., Ltd.), Spiron Red BEH Special (made by Hodogaya Chemical Industry Co., Ltd.), m-cresol purple, cresol red, rhodamine B, rhodamine 6G, sulforhodamine B, auramine, 4-p-diethylaminophenyliminonaphthoquinone, 2-carboxyanilino-4-p- Diethylaminophenyliminonaphthoquinone, 2-carboxystearylamino-4-pN, N-bis (hydroxyethyl) amino-phenyliminonaphthoquinone, 1-phenyl-3-methyl-4-p-diethylaminophenylimino-5-pyrazolone, 1- ⁇ -naphthyl-4- - dyes and p of diethy
  • leuco dyes known as materials for thermal paper and pressure sensitive paper are also mentioned as suitable ones.
  • suitable ones include crystal violet lactone, malachite green lactone, benzoyl leuco methylene blue, 2- (N-phenyl-N-methylamino) -6- (Np-tolyl-N-ethyl) amino-fluoran, 2-anilino -3-Methyl-6- (N-ethyl-p-toluidino) fluoran, 3,6-dimethoxyfluoran, 3- (N, N-diethylamino) -5-methyl-7- (N, N-dibenzylamino ) -Fluoran, 3- (N-cyclohexyl-N-methylamino) -6-methyl-7-anilinofluorane, 3- (N, N-diethylamino) -6-methyl-7-anilinofluorane, 3 -(N, N-diethylamino)
  • the image recording layer further contains, as other components, a surfactant, a polymerization inhibitor, a higher fatty acid derivative, a plasticizer, an inorganic fine particle, an inorganic stratiform compound, a cosensitizer, a chain transfer agent and the like. be able to.
  • a surfactant e.g., a surfactant, a polymerization inhibitor, a higher fatty acid derivative, a plasticizer, an inorganic fine particle, an inorganic stratiform compound, a cosensitizer, a chain transfer agent and the like.
  • the image recording layer A is prepared by dispersing or dissolving the necessary components described above in a known solvent to prepare a coating solution. Then, the coating solution is applied onto the support directly or through a subbing layer by a known method such as bar coater application and dried.
  • the coating amount (solid content) of the image recording layer on the support obtained after coating and drying varies depending on the application, but 0.3 to 3.0 g / m 2 is usually preferable. Within this range, good sensitivity and good film properties of the image recording layer can be obtained.
  • the image recording layer B contains an infrared ray absorbent, a polymerization initiator, a polymerizable compound and a polymer compound in the form of fine particles.
  • the components of the image recording layer B will be described below.
  • the infrared absorber With regard to the infrared absorber, the polymerization initiator and the polymerizable compound in the image recording layer B, the infrared absorber, the polymerization initiator and the polymerizable compound described in the image recording layer A can be used in the same manner.
  • the polymer compound in the form of particles may be selected from thermoplastic polymer particles, heat-reactive polymer particles, polymer particles having a polymerizable group, microcapsules containing a hydrophobic compound, and microgel (crosslinked polymer particles). preferable. Among them, polymer fine particles and a microgel having a polymerizable group are preferable.
  • the particulate polymeric compound comprises at least one ethylenically unsaturated polymerizable group. The presence of such a polymer compound in the form of fine particles provides the effect of enhancing the printing durability of the exposed area and the on-press developability of the unexposed area.
  • thermoplastic polymer fine particles for example, Research Disclosure No. 1 in January 1992. Preferred are thermoplastic polymer fine particles described in JP-A-33-233, JP-A-9-123387, JP-A-9-131850, JP-A-9-171249, JP-A-9-171250, and European Patent No. 931647. Specific examples of the polymer constituting the thermoplastic polymer fine particle include ethylene, styrene, vinyl chloride, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, vinylidene chloride, acrylonitrile, vinyl carbazole, and polyalkylene structure.
  • thermoplastic polymer fine particles is preferably 0.01 to 3.0 ⁇ m.
  • the thermally reactive polymer particles include polymer particles having a thermally reactive group.
  • the thermally reactive polymer fine particles form a hydrophobized region by crosslinking due to thermal reaction and functional group change at that time.
  • the thermally reactive group in the polymer fine particle having a thermally reactive group may be any functional group that carries out any reaction as long as a chemical bond is formed, but a polymerizable group is preferable, and examples thereof include Ethylenically unsaturated group (for example, acryloyl group, methacryloyl group, vinyl group, allyl group etc.) which performs radical polymerization reaction, cationically polymerizable group (for example, vinyl group, vinyloxy group, epoxy group, oxetanyl group etc.), addition reaction Group having an active hydrogen atom (eg, an amino group, a hydroxy group, a carboxy group, etc.) which is an active hydrogen atom which is a reaction partner thereof, a carboxy group which performs a condensation reaction, and Hydroxy group or amino group which is a reaction partner, acid anhydride which performs ring-opening addition reaction, and a reaction partner which is a reaction partner Such as amino group or hydroxy group are preferably exemplified.
  • the microcapsules for example, as described in JP-A-2001-277740 and JP-A-2001-277742, at least a part of the components of the image recording layer is encapsulated in the microcapsule.
  • the components of the image recording layer can also be contained outside the microcapsules.
  • the image recording layer containing microcapsules is a preferred embodiment in which the hydrophobic component is encapsulated in the microcapsule and the hydrophilic component is contained outside the microcapsule.
  • the microgel can contain part of components of the image recording layer on at least one of the surface or the inside thereof.
  • a reactive microgel having a radically polymerizable group on its surface is preferred from the viewpoint of image formation sensitivity and printing durability.
  • Known methods can be applied to microencapsulate or microgelate the components of the image recording layer.
  • the average particle diameter of the fine particle-shaped polymer compound is preferably 0.01 to 3.0 ⁇ m, more preferably 0.03 to 2.0 ⁇ m, and still more preferably 0.10 to 1.0 ⁇ m. Within this range, good resolution and stability over time can be obtained.
  • the content of the fine particle shaped polymer compound is preferably 5 to 90% by mass with respect to the total solid content of the image recording layer.
  • the image recording layer B can contain other components described in the image recording layer A, if necessary.
  • image recording layer C contains an infrared absorber and thermoplastic polymer fine particles. The components of the image recording layer C will be described below.
  • the infrared absorber contained in the image recording layer C is preferably a dye or pigment having an absorption maximum of 760 to 1,200 nm. Dyes are more preferred.
  • dyes commercially available dyes and documents (eg, “Dye Handbook” edited by the Society of Synthetic Organic Chemistry, published in 1945, “Chemical Industries” May, 1986, pages 45 to 51, “Near Infrared Absorbing Dyes”, “90 Known dyes described in “Development and market trend of age functional dyes”, Chapter 2, Section 2.3 (CMC Publishing, 1990) or patent can be used.
  • azo dyes, metal complex azo dyes Preferred are infrared absorbing dyes such as pyrazolone azo dyes, anthraquinone dyes, phthalocyanine dyes, carbonium dyes, quinoneimine dyes, polymethine dyes and cyanine dyes.
  • particularly preferred dyes to be added to the image recording layer are infrared absorbing dyes having a water-soluble group.
  • a thermal decomposition type infrared absorber disclosed in European Patent No. 1910082 and European Patent No. 2072570 is also preferably used. Specific examples of the infrared absorbing dye are shown below, but the present invention is not limited thereto.
  • the particle size of the pigment is preferably 0.01 to 1 ⁇ m, and more preferably 0.01 to 0.5 ⁇ m.
  • a method of dispersing the pigment known dispersion techniques used for ink production, toner production and the like can be used. The details are described in "Latest Pigment Application Technology” (CMC Publishing, 1986).
  • the content of the infrared absorber is preferably 0.1 to 30% by mass, more preferably 0.25 to 25% by mass, and particularly preferably 0.5 to 20% by mass, based on the solid content of the image recording layer. Within this range, good sensitivity can be obtained without losing the film strength of the image recording layer.
  • the thermoplastic polymer fine particles preferably have a glass transition temperature (Tg) of 60 ° C. to 250 ° C.
  • Tg of the thermoplastic polymer fine particles is more preferably 70 ° C. to 140 ° C., further preferably 80 ° C. to 120 ° C.
  • thermoplastic polymer fine particles having a Tg of 60 ° C. or higher for example, as described in Research Disclosure No. 1 of January 1992. It is preferable to cite thermoplastic polymer fine particles described in 33303, JP-A-9-123387, JP-A-9-131850, JP-A-9-171249, JP-A-9-171250 and EP931647 as suitable. it can.
  • homopolymers or copolymers composed of monomers such as ethylene, styrene, vinyl chloride, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, vinylidene chloride, acrylonitrile, vinylcarbazole or mixtures thereof Etc. can be illustrated.
  • Preferred examples include polystyrene and poly (methyl methacrylate).
  • the average particle size of the thermoplastic polymer fine particles is preferably 0.005 to 2.0 ⁇ m. When the average particle size is too large, the resolution may be deteriorated, and when it is too small, the stability over time may be deteriorated. This value is also applied as the average particle size when two or more types of thermoplastic polymer particles are mixed.
  • the average particle size is more preferably 0.01 to 1.5 ⁇ m, particularly preferably 0.05 to 1.0 ⁇ m. It is preferable that polydispersity at the time of mixing 2 or more types of thermoplastic polymer microparticles
  • fine-particles is 0.2 or more. Average particle size and polydispersity are calculated by laser light scattering.
  • the thermoplastic polymer fine particles may be used as a mixture of two or more. Specifically, at least two types of uses having different particle sizes or at least two types of using different Tg may be mentioned. By mixing and using two or more kinds, the film curability of the image area is further improved, and the printing durability is further improved in the case of a lithographic printing plate. For example, when thermoplastic polymer fine particles having the same particle size are used, a certain degree of voids will be present between the thermoplastic polymer fine particles, and even if the thermoplastic polymer fine particles are melted and solidified by image exposure, Curability may not be as desired. On the other hand, when thermoplastic polymer fine particles having different particle sizes are used, the void ratio between the thermoplastic polymer fine particles can be lowered, and as a result, the film hardenability of the image area after image exposure It can be improved.
  • thermoplastic polymer fine particles having the same Tg when the temperature rise of the image recording layer due to image exposure is insufficient, the thermoplastic polymer fine particles do not sufficiently melt and solidify, and the curability of the film is desired. It may not be On the other hand, when thermoplastic polymer fine particles having a different Tg are used, the film curability of the image area can be improved even when the temperature rise of the image recording layer by the image exposure is insufficient.
  • thermoplastic polymer particles having different Tg's When two or more types of thermoplastic polymer particles having different Tg's are mixed and used, it is preferable that the Tg of at least one thermoplastic polymer particle is 60 ° C. or more. Under the present circumstances, it is preferable that the difference of Tg is 10 degreeC or more, More preferably, it is 20 degreeC or more. Further, it is preferable to contain 70% by mass or more of thermoplastic polymer fine particles having a Tg of 60 ° C. or more based on all the thermoplastic polymer fine particles.
  • the thermoplastic polymer fine particles may have a crosslinkable group.
  • the heat generated in the image-exposed area causes a thermal reaction of the crosslinkable group to form a crosslink between the polymers, and the film strength of the image area is improved. Will be better.
  • the crosslinkable group may be a functional group which carries out any reaction as long as a chemical bond is formed, for example, an ethylenically unsaturated group which carries out a polymerization reaction (eg, acryloyl group, methacryloyl group, vinyl group, allyl group etc.) ), An isocyanate group which performs an addition reaction or a block thereof and a group having an active hydrogen atom which is the reaction partner (eg, amino group, hydroxy group, carboxyl group etc.), an epoxy group which similarly performs an addition reaction and its reaction partner
  • the amino group, the carboxyl group or the hydroxy group, the carboxyl group and the hydroxy group or the amino group which performs the condensation reaction, the acid anhydride which performs the ring opening addition reaction, the amino group or the hydroxy group, and the like can be mentioned.
  • thermoplastic polymer fine particle having a crosslinkable group examples include acryloyl group, methacryloyl group, vinyl group, allyl group, epoxy group, amino group, hydroxy group, carboxyl group, isocyanate group, acid anhydride and the like. And those having a crosslinkable group such as a protected group.
  • the introduction of the crosslinkable group into the polymer may be carried out at the time of polymerization of the polymer fine particles, or may be carried out by utilizing a polymer reaction after the polymerization of the polymer fine particles.
  • a crosslinkable group When a crosslinkable group is introduced during polymerization of the polymer fine particles, it is preferable to emulsion-polymerize or suspension-polymerize the monomer having the crosslinkable group.
  • the monomer having a crosslinkable group include allyl methacrylate, allyl acrylate, vinyl methacrylate, vinyl acrylate, glycidyl methacrylate, glycidyl acrylate, 2-isocyanate ethyl methacrylate or blocked isocyanate with alcohol thereof, 2-isocyanate ethyl acrylate or its isocyanate Block isocyanates with alcohol etc., 2-aminoethyl methacrylate, 2-aminoethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, acrylic acid, methacrylic acid, maleic anhydride, bifunctional acrylate, bifunctional methacrylate etc.
  • Examples of the polymer reaction used when introducing the crosslinkable group after polymerization of the polymer fine particles include the polymer reaction described in WO 96/34316.
  • the polymer fine particles may be reacted with each other via the crosslinkable group, or may be reacted with the high molecular compound or the low molecular compound added to the image recording layer.
  • the content of the thermoplastic polymer fine particles is preferably 50 to 95% by mass, more preferably 60 to 90% by mass, and particularly preferably 70 to 85% by mass, based on the solid content of the image recording layer.
  • the image recording layer C may further contain other components, if necessary.
  • ⁇ Surfactant having polyoxyalkylene group or hydroxy group As a surfactant having a polyoxyalkylene group (hereinafter, also described as a POA group) or a hydroxyl group, a surfactant having a POA group or a hydroxyl group can be appropriately used, but an anionic surfactant or a nonionic surfactant Agents are preferred. Among anionic surfactants or nonionic surfactants having a POA group or a hydroxy group, anionic surfactants or nonionic surfactants having a POA group are preferred.
  • polyoxyethylene group polyoxypropylene group, polyoxybutylene group and the like are preferable, and polyoxyethylene group is particularly preferable.
  • the average degree of polymerization of the oxyalkylene group is usually 2 to 50, preferably 2 to 20.
  • the number of hydroxy groups is usually 1 to 10, preferably 2 to 8. However, the terminal hydroxy group in the oxyalkylene group is not included in the number of hydroxy groups.
  • the anionic surfactant having a POA group is not particularly limited, and polyoxyalkylene alkyl ether carboxylates, polyoxyalkylene alkyl sulfosuccinates, polyoxyalkylene alkyl ether sulfuric acid ester salts, alkylphenoxy polyoxyalkylene propyl sulfonic acid Salts, polyoxyalkylene alkyl sulfophenyl ethers, polyoxyalkylene aryl ether sulfuric acid ester salts, polyoxyalkylene polycyclic phenyl ether sulfuric acid ester salts, polyoxyalkylene styryl phenyl ether sulfuric acid ester salts, polyoxyalkylene alkyl ether phosphoric acid ester salts, Polyoxyalkylene alkyl phenyl ether phosphate ester salts, polyoxyalkylene perfluoroalkyl ether Ester salts
  • the anionic surfactant having a hydroxy group is not particularly limited and includes hydroxycarboxylic acid salts, hydroxyalkyl ether carboxylic acid salts, hydroxyalkane sulfonic acid salts, fatty acid monoglyceride sulfuric acid ester salts, fatty acid monoglyceride phosphoric acid ester salts and the like .
  • the content of the surfactant having a POA group or a hydroxyl group is preferably 0.05 to 15% by mass of the solid content of the image recording layer, and more preferably 0.1 to 10% by mass.
  • surfactant which has a POA group or a hydroxyl group is given to the following, this invention is not limited to these.
  • the following surfactant A-12 is available from DuPont under the trade name Zonyl FSP.
  • the following surfactant N-11 is available from DuPont under the trade name Zonyl FSO 100.
  • the image recording layer may contain an anionic surfactant having neither a polyoxyalkylene group nor a hydroxyl group in order to ensure the uniformity of application of the image recording layer.
  • the said anionic surfactant is not specifically limited as long as the said objective is achieved.
  • alkyl benzene sulfonic acid or a salt thereof alkyl naphthalene sulfonic acid or a salt thereof, (di) alkyl diphenyl ether (di) sulfonic acid or a salt thereof, alkyl sulfate ester salt is preferable.
  • the addition amount of the anionic surfactant having no polyoxyalkylene group and hydroxy group is preferably 1 to 50% by mass, more preferably 1 to 30% by mass with respect to the surfactant having a polyoxyalkylene group or a hydroxy group. preferable.
  • anionic surfactant which does not have a polyoxyalkylene group and a hydroxyl group is given to the following, this invention is not limited to these.
  • a nonionic surfactant having no polyoxyalkylene group and no hydroxyl group, or a fluorine-based surfactant may be used.
  • fluorine-based surfactants described in JP-A-62-170950 are preferably used.
  • the image recording layer can contain a hydrophilic resin.
  • hydrophilic resins include hydrophilic groups such as hydroxy group, hydroxyethyl group, hydroxypropyl group, amino group, aminoethyl group, aminopropyl group, carboxyl group, carboxyl group, sulfo group, sulfo group, phosphate group and the like The resin which it has is preferable.
  • hydrophilic resins include gum arabic, casein, gelatin, starch derivatives, carboxymethylcellulose and sodium salts thereof, cellulose acetate, sodium alginate, vinyl acetate-maleic acid copolymers, styrene-maleic acid copolymers, polyacrylic acids and the like Their salts, polymethacrylic acids and their salts, homopolymers and copolymers of hydroxyethyl methacrylate, homopolymers and copolymers of hydroxyethyl acrylate, homopolymers and copolymers of hydroxypropyl methacrylate, homopolymers and copolymers of hydroxypropyl acrylate, hydroxybutyl Methacrylate homopolymers and copolymers, hydroxybutyl acrylate homopolymers and Polymers, polyethylene glycols, hydroxypropylene polymers, polyvinyl alcohols, hydrolyzed polyvinyl acetate having a degree of hydrolysis of at least 60%,
  • the mass average molecular weight of the hydrophilic resin is preferably 2,000 or more from the viewpoint of obtaining sufficient film strength and press life.
  • the content of the hydrophilic resin is preferably 0.5 to 50% by mass, and more preferably 1 to 30% by mass of the solid content of the image recording layer.
  • the image recording layer may contain inorganic fine particles.
  • Preferred examples of the inorganic fine particles include silica, alumina, magnesium oxide, titanium oxide, magnesium carbonate, calcium alginate and mixtures thereof.
  • the inorganic fine particles can be used for the purpose of strengthening the film and the like.
  • the average particle diameter of the inorganic fine particles is preferably 5 nm to 10 ⁇ m, and more preferably 10 nm to 1 ⁇ m. Within this range, the thermoplastic polymer particles are also dispersed stably, and the film strength of the image recording layer is sufficiently maintained, and a non-image portion excellent in hydrophilicity which hardly causes printing stains can be formed.
  • the inorganic fine particles are readily available as commercial products such as colloidal silica dispersions.
  • the content of the inorganic fine particles is preferably 1.0 to 70% by mass, and more preferably 5.0 to 50% by mass of the solid content of the image recording layer.
  • the image recording layer may contain a plasticizer to impart flexibility and the like to the coating.
  • the plasticizer include polyethylene glycol, tributyl citrate, diethyl phthalate, dibutyl phthalate, dihexyl phthalate, dioctyl phthalate, tricresyl phosphate, tributyl phosphate, trioctyl phosphate, tetrahydrofurfuryl oleate, etc.
  • the content of the plasticizer is preferably 0.1% to 50% by mass, and more preferably 1 to 30% by mass, based on the solid content of the image recording layer.
  • a compound that initiates or accelerates the reaction of the thermally reactive functional group is added as necessary. be able to.
  • stimulates reaction of a thermally reactive functional group the compound which generate
  • onium salts including lophine dimer, trihalomethyl compounds, peroxides, azo compounds, diazonium salts, diphenyliodonium salts and the like, acyl phosphines, imidosulfonates and the like can be mentioned.
  • the addition amount of such a compound is preferably 1 to 20% by mass, and more preferably 1 to 10% by mass of the solid content of the image recording layer. Within this range, a good reaction initiation or acceleration effect can be obtained without losing the on-press developability.
  • the image recording layer C is formed by dissolving or dispersing the necessary components described above in an appropriate solvent to prepare a coating solution, and coating the coating solution directly on a support or via a subbing layer.
  • a solvent water or a mixed solvent of water and an organic solvent is used.
  • mixed use of water and an organic solvent is preferable in that the surface condition after application is improved.
  • the amount of the organic solvent varies depending on the type of the organic solvent, and thus can not be specified uniquely, but usually 5 to 50% by volume in the mixed solvent is preferable.
  • the organic solvent should be used in an amount that does not cause aggregation of the thermoplastic polymer particles.
  • the solid content concentration of the coating solution for image recording layer is preferably 1 to 50% by mass.
  • the organic solvent used as a solvent of the coating solution is preferably a water-soluble organic solvent.
  • alcohol solvents such as methanol, ethanol, propanol, isopropanol and 1-methoxy-2-propanol
  • ketone solvents such as acetone and methyl ethyl ketone
  • glycol ether solvents such as ethylene glycol dimethyl ether, ⁇ -butyrolactone, N, N- Dimethylformamide, N, N-dimethylacetamide, tetrahydrofuran, dimethylsulfoxide and the like can be mentioned.
  • an organic solvent having a boiling point of 120 ° C. or less and a solubility in water (the amount dissolved in 100 g of water) of 10 g or more is preferable, and an organic solvent of 20 g or more is more preferable.
  • the coating amount (solid content) of the image recording layer on the support obtained after coating and drying varies depending on the application, but usually 0.5 to 5.0 g / m 2 is preferable, and 0.5 to 2.0 g / m 2. m 2 is more preferred.
  • a well-known support is used as a support of a lithographic printing plate precursor.
  • an aluminum plate which has been subjected to surface roughening and anodized by a known method is preferable.
  • the surface hydrophilization treatment with polyvinyl phosphonic acid or the like as described in the respective specifications of US Pat. Nos. 276, 868, 4, 153, 461 and 4, 689, 272 is appropriately selected and carried out.
  • the support preferably has a center line average roughness of 0.10 to 1.2 ⁇ m.
  • a back coat layer containing an organic polymer compound described in JP-A-5-45885 or an alkoxy compound of silicon described in JP-A-6-35174. Can be provided.
  • the lithographic printing plate precursor can be provided with a subbing layer, if necessary, between the image recording layer and the support.
  • the undercoat layer strengthens the adhesion between the support and the image recording layer in the exposed area and facilitates the peeling of the image recording layer from the support in the unexposed area. Contribute to improve the In the case of infrared laser exposure, the undercoat layer functions as a heat insulating layer to prevent the heat generated by the exposure from diffusing to the support to reduce the sensitivity.
  • the compound used in the undercoat layer include silane coupling agents having an addition-polymerizable ethylenic double bond reactive group described in JP-A-10-282679, And phosphorus compounds having an ethylenic double bond reactive group described in JP-A-304441.
  • silane coupling agents having an addition-polymerizable ethylenic double bond reactive group described in JP-A-10-282679
  • phosphorus compounds having an ethylenic double bond reactive group described in JP-A-304441.
  • polymer compounds having an adsorptive group, a hydrophilic group, and a crosslinkable group which can be adsorbed on the surface of a support are preferred.
  • a copolymer of a monomer having an adsorptive group, a monomer having a hydrophilic group, and a monomer having a crosslinkable group is preferable. More specifically, it has an adsorptive group such as a phenolic hydroxy group, a carboxy group, -PO 3 H 2 , -OPO 3 H 2 , -CONHSO 2- , -SO 2 NHSO 2- , -COCH 2 COCH 3 or the like Examples thereof include copolymers of monomers, monomers having a hydrophilic group such as a sulfo group, and monomers having a polymerizable crosslinkable group such as a methacryl group and an allyl group.
  • the polymer compound may have a crosslinkable group introduced by salt formation of a polar substituent of the polymer compound and a compound having a pair charge and a compound having an ethylenically unsaturated bond.
  • monomers other than the above, preferably hydrophilic monomers may be further copolymerized.
  • the content of unsaturated double bonds in the polymer compound for undercoat layer is preferably 0.1 to 10.0 mmol, more preferably 2.0 to 5.5 mmol, per 1 g of the polymer compound.
  • the weight average molecular weight of the polymer compound for undercoat layer is preferably 5,000 or more, and more preferably 10,000 to 300,000.
  • the undercoat layer contains, in addition to the above-mentioned compounds for the undercoat layer, a chelating agent, a secondary or tertiary amine, a polymerization inhibitor, a functional group having an amino group or polymerization inhibiting ability, and an aluminum support for preventing soiling over time.
  • the subbing layer is applied in a known manner.
  • the coating amount (solid content) of the undercoat layer is preferably 0.1 ⁇ 100mg / m 2, and more preferably 1 ⁇ 30mg / m 2.
  • a protective layer can be provided on the image recording layer, if necessary.
  • the protective layer not only has a function of suppressing the image formation inhibition reaction by oxygen blocking, but also has a function of preventing the generation of a scratch in the image recording layer and preventing an ablation at the time of high-intensity laser exposure.
  • the protective layer is applied in a known manner.
  • the coating amount of the protective layer is a coating amount after drying is preferably 0.01 ⁇ 10g / m 2, more preferably 0.02 ⁇ 3g / m 2, particularly preferably 0.02 ⁇ 1g / m2.
  • the plate making method according to the present invention will be described below.
  • Image exposure process The image exposure of the lithographic printing plate precursor according to the invention can be carried out according to the image exposing operation of a normal lithographic printing plate precursor.
  • the image exposure is performed by laser exposure through a transparent original having a line image, a halftone dot image or the like, or laser light scanning with digital data.
  • the wavelength of the light source is preferably 700 to 1400 nm.
  • a solid-state laser and a semiconductor laser emitting infrared rays are preferable.
  • the output is preferably 100 mW or more
  • the exposure time per pixel is preferably 20 microseconds or less
  • the irradiation energy amount is preferably 10 to 300 mJ / cm 2 . It is preferred to use a multi-beam laser device to reduce the exposure time.
  • the exposure mechanism may be any of an inner drum system, an outer drum system, a flat bed system, and the like. Image exposure can be performed by a conventional method using a platesetter or the like.
  • positioning perforations for positioning and / or the gripper or the gripper on the edge side of both the gripper or the gripper and the buttocks of the lithographic printing plate precursor It is preferable to fold the edge sides of both the and the buttocks into a predetermined shape to form a locking piece for attachment.
  • positioning perforation is a hole to be formed in the lithographic printing plate precursor corresponding to the positioning pin on the printing cylinder for attaching the lithographic printing plate precursor to the printing plate cylinder, and may be a punched hole.
  • the process of forming the punched holes is also referred to as a punching process or a punching process.
  • the "locking piece” refers to a locking portion formed by bending the edge side of the planographic printing plate precursor into a predetermined shape in order to attach the planographic printing plate precursor to the plate cylinder.
  • the process of forming a is also called a bend process.
  • the method of positioning perforation and locking piece processing is not particularly limited, and any known method can be used. For example, the method described in JP-A-2010-89384 can be exemplified. Registration in a short time after the start of printing in multicolor printing has cost merits in terms of reduction of waste paper and work time, and therefore registration marks (registration marks) on a lithographic printing plate precursor that serves as a registration mark.
  • a CCD camera is preferably read by a CCD camera, and punch and / or bend steps are correspondingly performed.
  • a device used for the punching step and / or the bending step for example, a commercially available punch bender SIBM-V40 (manufactured by Shimizu Seisakusho Co., Ltd.) is preferably mentioned.
  • the on-press development and printing of the lithographic printing plate precursor according to the invention can be carried out by a conventional method. That is, when dampening water and printing ink are supplied to the imagewise exposed lithographic printing plate precursor on a printing press, the image recording layer cured by exposure has an oleophilic surface in the exposed area of the image recording layer. Forming a printing ink receiver having the On the other hand, in the unexposed area, the uncured image recording layer is dissolved or dispersed and removed by the dampening water and / or the printing ink supplied, and the hydrophilic surface is exposed in that area.
  • dampening water adheres to the exposed hydrophilic surface, and the printing ink adheres to the image recording layer in the exposed area to start printing.
  • the dampening water or the printing ink may be supplied to the surface of the lithographic printing plate precursor first, but the dampening water may be first introduced to penetrate the dampening water and promote the on-press developability. It is preferable to supply
  • the method for making a lithographic printing plate and the dampening water for lithographic printing plate according to the present invention can suppress the coloration of the dampening water even if the on-press development type lithographic printing plate precursor is repeatedly subjected to on-press development. It has the excellent property of being able to prevent the coloration of the non-image area and provide a lithographic printing plate excellent in printing durability. This characteristic is particularly remarkable in the on-press development type lithographic printing plate precursor having the image recording layer C.
  • the molecular weight is a mass average molecular weight (Mw), and the ratio of repeating units is a molar percentage, except for those specifically specified.
  • the aluminum plate was desmutted by etching for 4 seconds at 70 ° C. with an aqueous solution of 155 g / l sulfuric acid, and washed for 2 seconds at 25 ° C. with demineralized water.
  • the aluminum plate was anodized for 13 seconds in a 155 g / l aqueous sulfuric acid solution at a temperature of 45 ° C. and a current density of 22 A / dm 2 and washed with demineralized water for 2 seconds. Further, it was treated with a 4 g / l aqueous solution of polyvinyl phosphonic acid at 40 ° C.
  • the support 1 had a surface roughness Ra of 0.21 ⁇ m and an anodized film amount of 4 g / m 2 .
  • a water-based image recording layer coating solution 1 containing the following thermoplastic polymer fine particles, infrared absorber IR-01 and polyacrylic acid is prepared, adjusted to a pH of 3.6, and coated on a support 1, 50 C. for 1 minute to form an image recording layer (corresponding to the above-mentioned image recording layer C), thereby preparing a lithographic printing plate precursor 1.
  • the application amount after drying of each component is shown below.
  • Thermoplastic polymer fine particles 0.7 g / m 2
  • Infrared absorber IR-01 0.10 g / m 2
  • Polyacrylic acid 0.09 g / m 2
  • thermoplastic polymer fine particles The thermoplastic polymer fine particles, the infrared absorber IR-01, and the polyacrylic acid used for the image recording layer coating solution 1 are as shown below.
  • Thermoplastic polymer fine particle styrene / acrylonitrile copolymer (molar ratio 50/50), Tg: 99 ° C., volume average particle diameter: 60 nm
  • Infrared absorber IR-01 Infrared absorbing dye of the following structure
  • lithographic printing plate precursor 2 was prepared in the same manner as the lithographic printing plate precursor 1 except that the image recording layer of the lithographic printing plate precursor 1 was changed to an image recording layer containing the following components (corresponding to the image recording layer C). did.
  • the application amount after drying of each component is shown below.
  • Thermoplastic polymer fine particles 0.5 g / m 2
  • Infrared absorber Infrared absorbing dye IR-12 (above): 0.18 g / m 2
  • Polyacrylic acid 0.09 g / m 2
  • thermoplastic polymer fine particle styrene / acrylonitrile copolymer (molar ratio 50/50), Tg: 99 ° C., volume average particle diameter: 40 nm
  • Polyacrylic acid Mw 250,000
  • A Mechanical roughening treatment (brush grain method) Using a device as shown in FIG. 1, mechanical roughening is performed by rotating bunching brushes while supplying a suspension of pumice (specific gravity: 1.1 g / cm 3 ) to the surface of an aluminum plate as a polishing slurry liquid.
  • pumice specific gravity: 1.1 g / cm 3
  • 41 is an aluminum plate
  • 42 and 44 are roller brushes (in this embodiment, bundle brushes)
  • 43 is an abrasive slurry liquid
  • 45, 46, 47 and 48 are supporting rollers.
  • the mechanical surface roughening treatment was performed with the median diameter of the abrasive pumice as 30 ⁇ m, the number of the bundle-planting brushes as four, and the rotation number of the bundle-planting brush as 250 rpm.
  • the material of the bundle planting brush was 6.10 nylon, and the diameter of the bristles was 0.3 mm and the length of the bristles was 50 mm.
  • the bundle planting brush is flocked so as to be dense by drilling a hole in a 300 mm diameter stainless steel cylinder. The distance between the two support rollers ( ⁇ 200 mm) at the lower part of the bundle planting brush was 300 mm.
  • the bunching brush was pressed until the load of the drive motor for rotating the brush became 10 kW plus to the load before pressing the bunching brush to the aluminum plate.
  • the rotation direction of the bundle planting brush was the same as the moving direction of the aluminum plate.
  • (B) Alkali etching treatment An etching treatment was carried out by spraying a caustic soda aqueous solution having a sodium hydroxide concentration of 26% by mass and an aluminum ion concentration of 6.5% by mass onto an aluminum plate at a temperature of 70 ° C. After that, it was rinsed with a spray. The amount of dissolved aluminum was 10 g / m 2 .
  • Electrochemical surface roughening treatment was continuously performed using an alternating voltage of 60 Hz.
  • the electrolyte used was an electrolyte prepared by adding aluminum nitrate to an aqueous solution containing 10.4 g / L of nitric acid at a temperature of 35 ° C. to adjust the aluminum ion concentration to 4.5 g / L.
  • FIG. 2 an aluminum plate W is wound around a radial drum roller 52 disposed so as to be immersed in the main electrolytic cell 50, and electrolyzed by main electrodes 53a and 53b connected to an AC power supply 51 in the transportation process.
  • the electrolytic solution 55 was supplied from the electrolytic solution supply port 54 through the slit 56 to the electrolytic solution passage 57 between the radial drum roller 52 and the main electrodes 53a and 53b.
  • the aluminum plate W treated in the main electrolytic cell 50 was then electrolytically treated in the auxiliary anode cell 60.
  • An auxiliary anode 58 is disposed opposite to the aluminum plate W in the auxiliary anode tank 60, and the electrolyte 55 is supplied so as to flow in the space between the auxiliary anode 58 and the aluminum plate W.
  • the current density was 30 A / dm 2 at the peak value of the current, and 5% of the current flowing from the power supply was diverted to the auxiliary anode.
  • the amount of electricity was 185 C / dm 2 as the sum of the amounts of electricity when the aluminum plate was an anode. After that, it was rinsed with a spray.
  • (E) Alkaline etching treatment An etching treatment was carried out by spraying a caustic soda aqueous solution having a sodium hydroxide concentration of 5% by mass and an aluminum ion concentration of 0.5% by mass onto an aluminum plate at a temperature of 50 ° C with a spray pipe. After that, it was rinsed with a spray. The amount of dissolved aluminum was 0.5 g / m 2 .
  • Electrochemical surface roughening treatment was continuously performed using an alternating voltage of 60 Hz.
  • the electrolyte used was an electrolyte prepared by adding aluminum chloride to an aqueous solution of hydrochloric acid 6.2 g / L at a liquid temperature of 35 ° C. and adjusting the aluminum ion concentration to 4.5 g / L.
  • the current density was 25A / dm 2 at the peak of electric current amount in hydrochloric acid electrolysis of the aluminum plate was 63C / dm 2 as the total quantity of electricity when the anode. After that, it was rinsed with a spray.
  • (H) Alkaline etching treatment An etching treatment was carried out by spraying a caustic soda aqueous solution having a sodium hydroxide concentration of 5% by mass and an aluminum ion concentration of 0.5% by mass onto an aluminum plate at a temperature of 50 ° C with a spray pipe. After that, it was rinsed with a spray. The amount of dissolved aluminum was 0.1 g / m 2 .
  • the aluminum plate 616 is conveyed as shown by the arrow in FIG.
  • the aluminum plate 616 is charged to (+) by the feeding electrode 620 in the feeding tank 612 in which the electrolytic solution 618 is stored.
  • the aluminum plate 616 is conveyed upward by the roller 622 in the power supply tank 612, and after being changed in direction by the nip roller 624, is conveyed toward the electrolytic treatment tank 614 in which the electrolytic solution 626 is stored, and is rotated by the roller 628. It is turned in the horizontal direction.
  • the aluminum plate 616 is charged to ( ⁇ ) by the electrolytic electrode 630 to form an anodic oxide film on the surface thereof, and the aluminum plate 616 leaving the electrolytic treatment tank 614 is transported to a later step.
  • the direction changing means is constituted by the roller 622, the nip roller 624 and the roller 628, and the aluminum plate 616 is formed between the rollers 622, 624 and 628 in the space between the power supply tank 612 and the electrolytic treatment tank 614
  • the sheet is transported in a mountain shape and a reverse U shape.
  • the feed electrode 620 and the electrolytic electrode 630 are connected to a DC power supply 634.
  • Anodizing treatment in the third step was carried out using a direct current electrolytic anodizing device having the structure shown in FIG. Anodizing treatment was performed under the conditions shown in Table D to form an anodized film having a predetermined film thickness. As the electrolyte, an aqueous solution containing the components shown in Table D was used.
  • (M) Hydrophilization treatment In order to ensure the hydrophilicity of the non-image area, a 2.5% by weight aqueous sodium silicate solution No. 3 was subjected to a silicate treatment by immersion at 50 ° C. for 7 seconds. The adhesion amount of Si was 8.5 mg / m 2 . Thereafter, the substrate was washed with water by spraying to prepare a support 2.
  • Undercoat layer coating solution (1) having the following composition was applied onto the support 2 so that the dry coating amount would be 20 mg / m 2 to form an undercoat layer.
  • (Undercoat layer coating solution (1)) ⁇ Compound for undercoat layer (UC-1) (the following structure) 0.18 g ⁇ 0.05 g of hydroxyethyl iminodiacetic acid Surfactant (Emarex 710, manufactured by Nippon Emulsion Co., Ltd.) 0.03 g ⁇ Water 28.0 g
  • An image recording layer coating solution (2) having the following composition is coated on a bar on the undercoat layer and then oven dried at 100 ° C. for 60 seconds to obtain an image recording layer having a dry coating amount of 1.0 g / m 2 (image recording layer B (Equivalent to)).
  • the image recording layer coating solution (2) was prepared by mixing and stirring the following photosensitive solution (1) and microgel solution (1) immediately before coating.
  • Binder polymer (1) (the following structure) 0.240 g (Mw: 55,000, n (number of EO units): 2) Infrared absorber (1) (structure below) 0.020 g ⁇ Borate compound (1) (sodium tetraphenylborate) 0.010 g -Polymerization initiator (1) (the following structure) 0.162 g ⁇ Polymerizable compound 0.192 g Tris (acryloyloxyethyl) isocyanurate (NK ester A-9300, Shin-Nakamura Chemical Co., Ltd.
  • Anionic surfactant 1 (the following structure) 0.050 g ⁇ Receptive agent 0.055 g Phosphonium compound (1) (structure below) ⁇ Receptive agent 0.018 g Benzyldimethyloctyl ammonium ⁇ PF 6 salt ⁇ 0.040 g of a sensitizer Ammonium group containing polymer (structure below) (Mw: 50,000, reduced specific viscosity 45 ml / g) ⁇ Fluorinated surfactant (1) (the following structure) 0.008 g ⁇ 2-butanone 1.091 g 1-methoxy-2-propanol 8.609 g
  • Microgel solution (1) ⁇ Microgel (1) (below) 2.640 g ⁇ Distilled water 2.425 g
  • microgel (1) As an oil phase component, 4.46 g of polyfunctional isocyanate (Mitsui Chemical Co., Ltd. product; 75 mass% ethyl acetate solution) of the following structure, trimethylolpropane (6 moles) and xylene diisocyanate (18 moles) are added 10 g of an adduct (Mitsui Chemical Polyurethanes Co., Ltd. product; 50% by mass ethyl acetate solution) to which methyl end-terminated polyoxyethylene (1 mol, repeat number of oxyethylene units: 90) is added, pentaerythritol triacrylate 3.15 g (Nippon Kayaku Co., Ltd.
  • aqueous phase component 40 g of a 4% by mass aqueous solution of polyvinyl alcohol (PVA-205, manufactured by Kuraray Co., Ltd.) as an aqueous phase component was prepared.
  • PVA-205 polyvinyl alcohol
  • the oil phase component and the water phase component were mixed and emulsified for 10 minutes at 12,000 rpm using a homogenizer.
  • the obtained emulsion was added to 25 g of distilled water and stirred at room temperature for 30 minutes and then at 50 ° C. for 3 hours.
  • the solid concentration of the microgel solution thus obtained was diluted with distilled water to 15% by mass to prepare a microgel (1).
  • the average particle size of the microgel measured by the light scattering method was 0.2 ⁇ m.
  • a protective layer coating solution (1) of the following composition After coating a protective layer coating solution (1) of the following composition with a bar on the image recording layer, it is oven dried at 120 ° C. for 60 seconds to form a protective layer having a dry coating amount of 0.15 g / m 2. Master 3 was produced.
  • a dampening solution concentrate A having the following composition was prepared.
  • the total volume of pure water was 1000 ml.
  • Dampened solution concentrate A was diluted 40 times with pseudohard water having a hardness of 2000 ppm as described below, and the pH was adjusted to a range of 4.8 to 5.3 using sodium hydroxide and phosphoric acid (85 mass%). It adjusted and the dampening water (A) was prepared.
  • OK Top Coat + manufactured by Oji Paper Co., Ltd.
  • OK Top Coat + manufactured by Oji Paper Co., Ltd.
  • on-machine development of the unexposed area of the image recording layer was completed, and in the non-image area, the ink was not transferred to the printing paper.
  • This on-press development to 1000-sheet printing test was repeated 10 times each time using a new lithographic printing plate precursor. After repeating the above test ten times, the dampening water of the dampening water circulation tank was collected, and the degree of coloring was visually evaluated based on the following index.
  • a dampening solution concentrate B having the following composition was prepared.
  • Lubricant 300.0 g of 1-butoxy-2-propanol
  • Lubricant 250.0 g of propylene glycol
  • Surfactant Pluronic L-44 (manufactured by ADEKA Co., Ltd.) 10.0 g (Polyoxyethylene-polyoxypropylene block polymer)
  • PH adjuster 5.0 g of citric acid
  • PH adjuster 5.0 g of ammonium citrate
  • PH adjuster 1.0 g of ammonium phosphate PH adjuster: ammonium nitrate 18.0 g
  • Preservative 4-isothiazolin-3-one derivative (5-chloro-2-methyl-4-isothiazolin-3-one) 4.0 g ⁇
  • the total volume of pure water was 1000 ml.
  • the dampening solution concentrate B is diluted 50 times with the above-mentioned pseudohard water having a hardness of 2000 ppm, and the pH is adjusted to a range of 4.8 to 5.3 with sodium hydroxide and phosphoric acid (85 mass%). Then, dampening water (B) was prepared.
  • the on-press development type planographic printing plate precursor is damped even if repeated on-press development It can be seen that the coloration of water can be suppressed, thereby preventing contamination of the printed non-image area and providing a lithographic printing plate excellent in printing durability.
  • the dampening water containing the specific compound according to the present invention can suppress the coloring of the dampening water even if it is used repeatedly, thereby preventing contamination of the non-image area of the printed matter, and having excellent printing durability. It is understood that a printing plate can be provided.
  • a lithographic printing plate making method that can provide a lithographic printing plate, and a dampening water for lithographic printing can be provided.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

La présente invention concerne un procédé de fabrication de plaque pour réaliser le développement sur presse d'un original de plaque d'impression planographique en fournissant de l'eau de mouillage et de l'encre d'impression à celle-ci, l'original de plaque d'impression planographique contenant un colorant présentant une absorption dans au moins la plage de longueurs d'onde de lumière visible, et l'eau de mouillage contenant au moins un composé choisi dans le groupe constitué de peroxyde d'hydrogène, de percarbonate, d'hyposulfite, de dioxyde de thiourée, et d'acide ascorbique ou d'un dérivé de celui-ci. La présente invention concerne également un procédé de fabrication de plaque d'impression planographique avec lequel, même lorsqu'un développement sur presse d'un original de plaque d'impression planographique de type à développement sur presse est réalisé de façon répétée à l'aide de l'eau de mouillage, l'eau de mouillage est empêchée d'être colorée, ce qui permet de fournir une plaque d'impression planographique capable d'empêcher la contamination d'une partie de formation de non-image de matière imprimée et ayant une excellente durabilité d'impression. La présente invention concerne également une eau de mouillage pour impression planographique.
PCT/JP2017/029409 2016-08-30 2017-08-15 Procédé de fabrication de plaque pour plaque d'impression planographique et eau de mouillage pour impression planographique WO2018043124A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021132665A1 (fr) * 2019-12-27 2021-07-01 富士フイルム株式会社 Procédé d'impression à plat
CN113087031A (zh) * 2021-03-24 2021-07-09 云南卓印科技有限公司 自来水胶印水质稳定剂、其制备方法、使用方法与用途

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177072A (en) * 1978-06-02 1979-12-04 Fuji Photo Film Co., Ltd. Process for preparing a lithographic printing plate with a thiourea wetting solution
JPS61270193A (ja) * 1985-05-24 1986-11-29 Toyo Ink Mfg Co Ltd 平版印刷用湿し水
JPH07125472A (ja) * 1993-11-02 1995-05-16 Fuji Photo Film Co Ltd 平版印刷版用湿し水組成物
JPH1120331A (ja) * 1997-07-04 1999-01-26 Dainippon Ink & Chem Inc 平版印刷用濃縮湿し水
JP2005538223A (ja) * 2002-09-05 2005-12-15 ボクフリー インコーポレーティッド 速乾性コーティング
JP2012035634A (ja) * 2005-02-28 2012-02-23 Fujifilm Corp 平版印刷方法
JP2014104631A (ja) * 2012-11-26 2014-06-09 Fujifilm Corp 新聞印刷用平版印刷版原版及びその製造方法、並びに平版印刷版の製版方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177072A (en) * 1978-06-02 1979-12-04 Fuji Photo Film Co., Ltd. Process for preparing a lithographic printing plate with a thiourea wetting solution
JPS61270193A (ja) * 1985-05-24 1986-11-29 Toyo Ink Mfg Co Ltd 平版印刷用湿し水
JPH07125472A (ja) * 1993-11-02 1995-05-16 Fuji Photo Film Co Ltd 平版印刷版用湿し水組成物
JPH1120331A (ja) * 1997-07-04 1999-01-26 Dainippon Ink & Chem Inc 平版印刷用濃縮湿し水
JP2005538223A (ja) * 2002-09-05 2005-12-15 ボクフリー インコーポレーティッド 速乾性コーティング
JP2012035634A (ja) * 2005-02-28 2012-02-23 Fujifilm Corp 平版印刷方法
JP2014104631A (ja) * 2012-11-26 2014-06-09 Fujifilm Corp 新聞印刷用平版印刷版原版及びその製造方法、並びに平版印刷版の製版方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021132665A1 (fr) * 2019-12-27 2021-07-01 富士フイルム株式会社 Procédé d'impression à plat
JPWO2021132665A1 (fr) * 2019-12-27 2021-07-01
CN114845875A (zh) * 2019-12-27 2022-08-02 富士胶片株式会社 平版印刷方法
JP7394874B2 (ja) 2019-12-27 2023-12-08 富士フイルム株式会社 平版印刷方法
CN113087031A (zh) * 2021-03-24 2021-07-09 云南卓印科技有限公司 自来水胶印水质稳定剂、其制备方法、使用方法与用途

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