WO2023026776A1 - 水なし平版印刷版原版、水なし平版印刷版の製造方法および仕分け方法ならびに印刷物の製造方法 - Google Patents
水なし平版印刷版原版、水なし平版印刷版の製造方法および仕分け方法ならびに印刷物の製造方法 Download PDFInfo
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- WO2023026776A1 WO2023026776A1 PCT/JP2022/029447 JP2022029447W WO2023026776A1 WO 2023026776 A1 WO2023026776 A1 WO 2023026776A1 JP 2022029447 W JP2022029447 W JP 2022029447W WO 2023026776 A1 WO2023026776 A1 WO 2023026776A1
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- printing plate
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 150000003566 thiocarboxylic acids Chemical class 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- PRZSXZWFJHEZBJ-UHFFFAOYSA-N thymol blue Chemical compound C1=C(O)C(C(C)C)=CC(C2(C3=CC=CC=C3S(=O)(=O)O2)C=2C(=CC(O)=C(C(C)C)C=2)C)=C1C PRZSXZWFJHEZBJ-UHFFFAOYSA-N 0.000 description 1
- WOZZOSDBXABUFO-UHFFFAOYSA-N tri(butan-2-yloxy)alumane Chemical compound [Al+3].CCC(C)[O-].CCC(C)[O-].CCC(C)[O-] WOZZOSDBXABUFO-UHFFFAOYSA-N 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000001052 yellow pigment Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
- 229930007845 β-thujaplicin Natural products 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
- B41C1/1008—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
- B41C1/1016—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials characterised by structural details, e.g. protective layers, backcoat layers or several imaging layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/06—Lithographic printing
- B41M1/08—Dry printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
-
- 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
- B41N1/003—Printing plates or foils; Materials therefor with ink abhesive means or abhesive forming means, such as abhesive siloxane or fluoro compounds, e.g. for dry lithographic printing
-
- 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
-
- 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
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/105—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having substances, e.g. indicators, for forming visible images
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/02—Positive working, i.e. the exposed (imaged) areas are removed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/16—Waterless working, i.e. ink repelling exposed (imaged) or non-exposed (non-imaged) areas, not requiring fountain solution or water, e.g. dry lithography or driography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/22—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by organic non-macromolecular additives, e.g. dyes, UV-absorbers, plasticisers
Definitions
- the present invention relates to a waterless lithographic printing plate precursor, a waterless lithographic printing plate manufacturing method and a sorting method using the same, and a printed matter manufacturing method.
- ink is repelled by forming a thin layer of water containing chemicals (hereinafter sometimes referred to as "dampening solution”) on the surface of the lithographic printing plate during printing.
- damppening solution water containing chemicals
- waterless printing in which an ink-repellent layer such as a silicone rubber layer is formed instead of dampening water to form an ink-repellent non-image area.
- dampening water is continuously supplied during printing, so waste liquid containing a mixture of dampening water and ink is generated. It is a less printing method.
- the waterless lithographic printing plate used for waterless printing is conventionally processed by exposing the waterless lithographic printing plate precursor (exposure step), immersing the exposed waterless lithographic printing plate precursor in a chemical, and removing the heat-sensitive layer in the exposed area. and/or a step of swelling and dissolving the surface of the photosensitive layer (pretreatment step), a step of rubbing the surface to remove the ink repellent layer in the image area (development step), and a solution containing a dye to enhance visibility. It is produced by a plate-making process including a step (dyeing step) of dyeing the image portion using .
- a waterless lithographic printing plate precursor for direct plate-making wherein the heat-sensitive layer comprises a composition comprising at least a mixture of a dye that develops color under the action of an acid and an acid (e.g., Patent Document 1) or a lithographic printing plate precursor having on a substrate at least a heat-sensitive layer containing an infrared absorbing compound and an ink-repellent layer in this order, which does not contain an infrared absorbing compound and contains a dye compound.
- Patent Document 2 A lithographic printing plate precursor has been proposed (see, for example, Patent Document 2), which is characterized by having a colored layer between the heat-sensitive layer and the ink-repellent layer.
- the direct drawing type waterless lithographic printing plate precursor described in Patent Document 1 can increase the contrast between the image area and the non-image area, with the recent speeding up of the printing process and plate making process, the image area and the image area Non-image areas are required to have higher contrast. In particular, when an image pattern is discriminated by a machine, a higher contrast than conventionally is required.
- the lithographic printing plate precursor described in Patent Document 2 can provide a high contrast between the image area and the non-image area after exposure, there is a problem that the productivity decreases due to the formation of the colored layer.
- an object of the present invention is to provide a waterless lithographic printing plate precursor that can obtain a high contrast between image areas and non-image areas by exposure without requiring a special layer.
- the present invention provides a waterless lithographic printing plate precursor comprising at least a substrate, a heat-sensitive layer and an ink-repellent layer in this order, wherein the substrate has a white layer or a white surface, and the heat-sensitive layer comprises at least (a ) an infrared-absorbing dye having a maximum absorption wavelength of 700 to 1,000 nm, (b) a dye that develops color by accepting protons, and (c) a proton-donating compound.
- printing plate precursor The waterless lithographic printing plate precursor of the present invention (hereinafter sometimes referred to as “printing plate precursor”) will be described below.
- the printing plate precursor of the invention has at least a substrate, a heat-sensitive layer and an ink-repellent layer in this order.
- the substrate has a function of holding the heat-sensitive layer, the ink repellent layer, and the like.
- the heat-sensitive layer has the function of generating heat and decomposing when irradiated (exposed) with infrared rays, and facilitating the removal of the ink repellent layer in the exposed area.
- the exposed heat-sensitive layer becomes an image area that accepts ink. That is, the exposure portion becomes the image portion.
- the ink repellent layer has a function of repelling the printing ink, the unexposed area where the ink repellent layer is not removed becomes the non-image area.
- an image pattern is formed by the exposed portion (image portion) and the unexposed portion (non-image portion).
- an infrared absorbing dye having a maximum absorption wavelength of 700 to 1,000 nm hereinafter, "(a) infrared absorbing dye”
- b) dye that develops color by accepting protons hereinafter sometimes referred to as "(b) dye”
- a heat-sensitive layer containing a proton-donating compound Characterized by The heat-sensitive layer of the printing plate precursor according to the first aspect of the invention is in a colored state due to the coexistence of (b) the dye and (c) the proton-donating compound.
- the infrared absorbing dye generates heat upon exposure, and the generated heat causes loss of interaction between the (b) dye and (c) the proton-donating compound, causing fading and partial thermal decomposition. ⁇ Gasify.
- the faded color of the heat-sensitive layer in the exposed area and the white color of the substrate overlap, and the image area of the printing plate precursor observed from the ink repellent layer side (exposure part) will be white.
- the white layer or white surface of the substrate overlaps the color of the heat-sensitive layer in the unexposed area, the brightness of the non-image area (unexposed area) is improved. Therefore, the contrast between the exposed portion and the unexposed portion can be increased.
- Base material those which are conventionally used as a base material for printing plates and exhibit little dimensional change in the printing process are preferably used. Examples thereof include substrates made of paper, metal, glass, plastic, and the like. More specifically, the material of the base material includes paper, paper laminated with plastic (polyethylene, polypropylene, polystyrene, etc.); metal plates such as aluminum (including aluminum alloys), zinc, and copper; soda lime, and quartz.
- glass plates such as silicon wafers; plastic films such as cellulose acetate, polyethylene terephthalate, polyethylene, polyester, polyamide, polyimide, polystyrene, polypropylene, polycarbonate, and polyvinyl acetal; paper or plastic films laminated or vapor-deposited with the above metals, etc. mentioned.
- aluminum plates are particularly preferable because they undergo little dimensional change during the printing process.
- polyethylene terephthalate film is particularly preferred because of its excellent flexibility.
- the thickness of the base material is not particularly limited, and the thickness corresponding to the printing machine used for lithographic printing may be selected.
- these substrates have a white layer or white surface in order to improve the contrast between image areas and non-image areas.
- white means that the reflectance is 50% or more in the entire wavelength range when the reflectance is measured under the conditions of a spectral range of 450 to 700 nm and a spectral interval of 10 nm.
- a spectrophotometer e.g., reflectance graph mode of "eXact" advance (manufactured by x-rite)
- eXact advance
- the base material has a white layer means that at least one side of the base material has a white layer having a reflectance within the above range. Further, that the substrate has a white surface means that at least one surface of the substrate has a reflectance within the above range. From the viewpoint of further improving the contrast between the image area and the non-image area, the reflectance of the substrate is more preferably 70% or more, and even more preferably 75% or more.
- Examples of methods for providing a white layer on a base material include a method of coating the base material with an organic layer composition liquid in which a pigment is dispersed, and a method of bonding a white film or sheet to the base material.
- pigments contained in the white layer include inorganic white pigments such as titanium oxide, zinc white, and lithopone, and inorganic yellow pigments such as yellow lead, cadmium yellow, yellow iron oxide, ocher, and titanium yellow. You may use 2 or more types of these. Among these, titanium oxide is preferable from the viewpoint of coloring power.
- the surface of the pigment particles may be treated with a titanate-based coupling agent or the like. Such a surface treatment can improve the dispersibility of the pigment particles and improve the dispersion stability even when the content of the pigment particles in the organic layer composition liquid is large.
- the content is preferably 2% by volume or more and 30% by volume or less in the white layer. If the content of titanium oxide is 2% by volume or more, the reflectance can be easily increased to 50% or more in the entire wavelength range of 450 to 700 nm. On the other hand, if the content of titanium oxide is 30% by volume or less, the coating performance of the organic layer composition liquid can be improved.
- the white layer may contain an active hydrogen group-containing compound, and can improve adhesion to the substrate and/or the heat-sensitive layer.
- active hydrogen group-containing compounds include hydroxyl group-containing compounds, amino group-containing compounds, carboxyl group-containing compounds, and thiol group-containing compounds. You may contain 2 or more types of these. Among these, hydroxyl group-containing compounds are preferred. Examples of hydroxyl group-containing compounds include phenolic hydroxyl group-containing compounds and alcoholic hydroxyl group-containing compounds. Examples of phenolic hydroxyl group-containing compounds include novolak resins and resole resins. Examples of alcoholic hydroxyl group-containing compounds include epoxy acrylates, epoxy methacrylates, polyvinyl butyral resins, and epoxy resins. In addition to these, polymers into which hydroxyl groups have been introduced by a known method are also included. Among these active hydrogen group-containing compounds, epoxy resins are preferably used from the viewpoint of adhesion to substrates.
- the heat-sensitive layer of the present invention comprises at least (a) an infrared absorbing dye having a maximum absorption wavelength of 700 to 1,000 nm ((a) infrared absorbing dye), (b) a dye that develops color by receiving protons ((b) dye), and (c) a proton donating compound.
- Examples of infrared absorbing dyes having a maximum absorption wavelength of 700 to 1,000 nm include cyanine dyes, azulenium dyes, squarylium dyes, croconium dyes, azo disperse dyes, bisazostilbene dyes, and naphthoquinone. dyes, anthraquinone dyes, perylene dyes, phthalocyanine dyes, naphthalocyanine metal complex dyes, polymethine dyes, dithiol nickel complex dyes, indoaniline metal complex dyes, intermolecular CT dyes, benzothiopyran spiropyrans, nigrosine dyes etc. Two or more of these may be included. By containing two or more kinds of infrared absorbing dyes with different absorption wavelengths, it is possible to correspond to two or more kinds of lasers with different emission wavelengths.
- the maximum absorption wavelength of the infrared absorbing dye is obtained by performing wavelength scanning measurement using an ultraviolet-visible-near-infrared spectrophotometer under the conditions of a wavelength range of 400 to 1,100 nm and a sampling interval of 5 nm. The wavelength showing the maximum absorbance in the measured absorption spectrum.
- ⁇ is preferably 1 ⁇ 10 4 L/(mol ⁇ cm) or more, more preferably 1 ⁇ 10 5 L/(mol ⁇ cm) or more. If ⁇ is 1 ⁇ 10 4 L/(mol ⁇ cm) or more, the initial sensitivity can be further improved.
- ⁇ is a value for the irradiated active energy ray. If specific wavelengths of active energy rays are to be indicated, attention should be paid to 780 nm, 830 nm or 1064 nm.
- the content of the infrared absorbing dye is preferably 12% by mass to 20% by mass in the heat-sensitive layer.
- the content of the infrared absorbing dye is more preferably 14% by mass or more.
- Dyes include acid-base indicators such as methanyl yellow, thymol blue, 4-phenylazodiphenylamine, methyl yellow, methyl red, and neutral red; 3-(N,N-diethylamino)-7-(N , N′-dibenzylamino)fluorane, 1-ethyl-8-[ethyl(p-tolyl)amino]-2,2,4-trimethyl-1,2-dihydro-3′H-spiro[chromeno[2, 3-g]quinoline-11,1′-isobenzofuran]-3′-one, 3,3-bis(p-dimethylaminophenyl)-6-dimethylaminophthalide, 3-[4-(diethylamino)-2 -hexyloxyphenyl]-3-(1-ethyl-2-methylindol-3-yl)-4-azaphthalide, 3-(4-diethylamino-2-methylphenyl)-3-(1-(1
- leuco dyes are preferred because they can be changed between colorless and colored depending on their chemical structures.
- the leuco dye becomes colorless when the interaction with the (c) proton-donating compound is lost by exposure of the heat-sensitive layer, so that the contrast between the image area and the non-image area can be increased.
- the maximum absorption wavelength when the dye develops color by accepting protons is preferably within the range of 500 to 650 nm.
- Infrared absorbing dye exhibits a pale green to green color, so if the maximum absorption wavelength of (b) dye when accepting protons is within the range of 500 to 650 nm, the color of the heat-sensitive layer is the complementary color. It becomes a purple to blue system color.
- the violet to blue color caused by the (b) dye fades in the heat-sensitive layer, and the (a) infrared-absorbing dye causes A light green to greenish color remains. Therefore, the exposed portion (image portion) has a pale green to greenish color, and the unexposed portion (non-image portion) has a violet to blue-based color, so that the contrast between the image portion and the non-image portion can be further improved.
- the maximum absorption wavelength when the dye accepts protons is obtained by wavelength scan measurement using an ultraviolet-visible-near-infrared spectrophotometer under the conditions of a wavelength range of 400 to 1,100 nm and a sampling interval of 5 nm.
- the wavelength showing the maximum absorbance in the obtained absorption spectrum is obtained by wavelength scan measurement using an ultraviolet-visible-near-infrared spectrophotometer under the conditions of a wavelength range of 400 to 1,100 nm and a sampling interval of 5 nm.
- Examples of (b) dyes having a maximum absorption wavelength in the range of 500 to 650 nm when accepting protons include 3,3-bis(p-dimethylaminophenyl)-6-dimethylaminophthalide, 3-[4 -(Diethylamino)-2-hexyloxyphenyl]-3-(1-ethyl-2-methylindol-3-yl)-4-azaphthalide, 3-(4-diethylamino-2-methylphenyl)-3-(1 -ethyl-2-methylindol-3-yl)-4-azaphthalide, 3-[(4-diethylamino)-o-tolyl]-6-(dimethylamino)-3-[(4-dimethylamino)phenyl]phthalide , 3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene] and the like.
- the (b) dye that exhibits a blackish color when receiving protons can also be preferably used.
- the blackish color of the heat-sensitive layer fades by exposure, and (a) the light green to greenish color of the infrared absorbing dye remains, so that the contrast between the image area and the non-image area can be further improved.
- Examples of the dye (b) that exhibits a blackish color when receiving protons include 2′-anilino-6′-(N-ethyl-N-isopentylamino)-3′-methylspiro[phthalide-3,9′ -xanthene], 2′-anilino-6′-(N,N-dipentan-1-ylamino)-3′-methyl-3H-spiro[isobenzofuran-1,9′-xanthene]-3-one, 2′ -anilino-6'-(dibutylamino)-3'-methylspiro[phthalido-3,9'-xanthene], 2'-anilino-6'-[N-ethyl-N-(4-tolyl)amino]-3 '-methyl-3H-spiro[isobenzofuran-1,9'-xanthene]-3-one, 6-(diethylamino)-2-[(3-trifluoromethyl)anilin
- the content of the dye is preferably 5% by mass to 20% by mass in the heat-sensitive layer.
- Contrast between the image area and the non-image area can be further improved by setting the content of the dye to 5% by mass or more.
- the content of the dye is more preferably 7% by mass or more.
- by setting the content of the dye (b) to 15% by mass or less it is possible to suppress ink repulsive peeling, in which even the ink repellent layer in the non-image area is peeled off.
- Examples of proton donating compounds include inorganic acids, organic acids, and polymers having active hydrogen-containing structural units. You may use 2 or more types of these.
- inorganic acids include phosphoric acid and boric acid.
- Organic acids include phenolic hydroxy groups, carboxy groups, sulfo groups, and the like.
- organic acids having a sulfo group such as toluenesulfonic acid, xylenesulfonic acid, cumenesulfonic acid, dodecylbenzenesulfonic acid, and dinonylnaphthalenesulfonic acid have a strong proton-donating property to the dye (b). It is preferable because it is effective in
- the content of inorganic acid and/or organic acid in the heat-sensitive layer is preferably 0.01 to 5% by mass, more preferably 0.1 to 2% by mass, even more preferably 0.5 to 2% by mass.
- an inorganic acid and/or an organic acid when used as the proton donating compound, it may further contain a film-forming polymer that does not have an active hydrogen-containing structural unit.
- Such polymers include melamine resins.
- the content of such a polymer is preferably 20% by mass or more, more preferably 30% by mass or more, in the heat-sensitive layer. Also, the content is preferably 95% by mass or less, more preferably 80% by mass or less in the heat-sensitive layer.
- the polymer having the active hydrogen-containing structural unit can improve the adhesiveness between the ink repellent layer and the heat-sensitive layer by reacting with the adhesive component in the upper ink repellent layer, thereby suppressing peeling of the ink repellent layer.
- it can be used preferably because it can also serve as a binder polymer for the heat-sensitive layer.
- Polymers having active hydrogen-containing structural units include, for example, monomers containing carboxyl groups such as (meth)acrylic acid; ) acrylic acid ester; N-alkyl (meth)acrylamide, (meth)acrylamide; reaction product of amines with glycidyl (meth)acrylate or allylglycidyl; p-hydroxystyrene, ethylenic having active hydrogen such as vinyl alcohol homopolymers or copolymers of unsaturated monomers; and polymers having structural units having active hydrogen in the main chain.
- monomers containing carboxyl groups such as (meth)acrylic acid; ) acrylic acid ester; N-alkyl (meth)acrylamide, (meth)acrylamide; reaction product of amines with glycidyl (meth)acrylate or allylglycidyl; p-hydroxystyrene, ethylenic having active hydrogen such as vinyl alcohol homopolymers or copolymers of unsaturated monomers;
- the copolymerizable monomer component in the copolymer may be another ethylenically unsaturated monomer having active hydrogen, or may be an ethylenically unsaturated monomer containing no active hydrogen.
- polymers having structural units having active hydrogen in the main chain include polyurethanes, polyureas, polyamides, epoxy resins, polyalkyleneimines, novolac resins, resol resins, cellulose derivatives, and the like. be done. You may contain 2 or more types of these.
- polymers having an alcoholic hydroxyl group, a phenolic hydroxyl group, or a carboxyl group are preferred, and polymers having a phenolic hydroxyl group (p-hydroxystyrene homopolymer or copolymer, novolac resin, resole resin, etc.) are more preferred.
- novolak resins are more preferred.
- Novolak resins include phenol novolak resins and cresol novolak resins.
- the content of the polymer having an active hydrogen-containing structural unit is preferably 20% by mass or more, more preferably 30% by mass or more, in the heat-sensitive layer from the viewpoint of thermally decomposing the surface of the heat-sensitive layer and promoting development. From the viewpoint of the toughness of the heat-sensitive layer, the content is preferably 95% by mass or less, more preferably 80% by mass or less in the heat-sensitive layer.
- a polymer having an active hydrogen-containing structural unit and a film-forming polymer having no active hydrogen-containing structural unit (hereinafter referred to as "another polymer X") may be included.
- polymers X include, for example, homopolymers or copolymers of (meth)acrylic acid esters such as polymethyl (meth)acrylate and polybutyl (meth)acrylate, and homopolymers of styrene monomers such as polystyrene and ⁇ -methylstyrene.
- the total content is 5% by mass or more in the total solid content of the heat-sensitive layer composition solution (that is, in the heat-sensitive layer) in order to improve the coatability of the heat-sensitive layer composition solution. is preferred, and more preferably 10% by mass or more.
- the total content is preferably 50% by mass or less, more preferably 30% by mass or less, based on the total solid content of the heat-sensitive layer composition solution in order to achieve high-definition image reproduction.
- the thermosensitive layer preferably further contains a cross-linking agent.
- the cross-linking agent include polyfunctional compounds having a plurality of functional groups reactive with the active hydrogen of the polymer.
- polyfunctional isocyanate, polyfunctional blocked isocyanate, polyfunctional epoxy compound, polyfunctional (meth)acrylate compound, polyfunctional aldehyde, polyfunctional mercapto compound, polyfunctional alkoxysilyl compound, polyfunctional amine compound, polyfunctional carboxylic acid examples include polyfunctional vinyl compounds, polyfunctional diazonium salts, polyfunctional azide compounds, hydrazine, and organic complex compounds composed of metals and organic compounds. Two or more of these may be included.
- Organic complex compounds include, for example, organic complex salts in which organic ligands are coordinated to metals, organic and inorganic complex salts in which organic ligands and inorganic ligands are coordinated to metals, and metals and organic molecules that are shared via oxygen. Bonded metal alkoxides and the like can be mentioned.
- a metal chelate compound in which the ligand has two or more donor atoms and forms a ring containing a metal atom contributes to the stability of the organic complex compound itself and the stability of the heat-sensitive layer composition solution. It is preferably used from the aspect of
- Main metals that form organic complex compounds include Al(III), Ti(IV), Mn(II), Mn(III), Fe(II), Fe(III), Co(II), Co(III ), Ni(II), Ni(IV), Cu(I), Cu(II), Zn(II), Ge, In, Sn(II), Sn(IV), Zr(IV), Hf(IV) is preferred.
- Al(III) is particularly preferable because it can easily obtain the effect of improving sensitivity
- Ti(IV) is particularly preferable because resistance to printing inks and ink detergents can easily be developed.
- examples of ligands include compounds having a coordinating group having oxygen, nitrogen, sulfur, or the like as a donor atom.
- preferred compounds include Al(III), Ti(IV), Fe(II), Fe(III), Mn(III) , Co(II), Co(III), Ni(II), Ni(IV), Cu(I), Cu(II), Zn(II), Ge, In, Sn(II), Sn(IV), ⁇ -diketones of metals such as Zr(IV) and Hf(IV), amines, alcohols, complex compounds with carboxylic acids, and further Al(III), Fe(II), Fe(III) , Ti(IV) and Zr(IV) acetylacetone complexes and acetoacetate ester complexes are particularly preferred complex compounds.
- the content of the organic complex compound in the heat-sensitive layer is preferably 0.5% by mass or more and 50% by mass or less, more preferably 5% by mass or more and 20% by mass or less, and further preferably 10% by mass or more and 20% by mass or less. .
- Ink repellent layer As the ink repellent layer, a silicone rubber layer which is a crosslinked product of polyorganosiloxane can be preferably used.
- the silicone rubber layer includes, for example, a layer obtained by applying an addition reaction type silicone rubber layer composition or a condensation reaction type silicone rubber layer composition, a layer obtained by applying and drying a solution of these compositions, and the like. mentioned.
- the addition reaction type silicone rubber layer composition preferably contains at least a vinyl group-containing organopolysiloxane, a SiH group-containing compound having a plurality of hydrosilyl groups, and a curing catalyst.
- the silicone rubber layer composition may further contain a reaction inhibitor.
- the vinyl group-containing organopolysiloxane has a structure represented by the following general formula (I) and has a vinyl group at the main chain terminal or in the main chain. Among them, those having a vinyl group at the end of the main chain are preferable. You may contain 2 or more types of these. —(SiR 1 R 2 —O—) n — (I) In general formula (I), n represents an integer of 2 or more. R 1 and R 2 each independently represent a saturated or unsaturated hydrocarbon group having 1 to 50 carbon atoms.
- the hydrocarbon groups may be linear, branched, cyclic, and may contain aromatic rings.
- R 1 and R 2 are preferably methyl groups from the viewpoint of ink repellency of the waterless lithographic printing plate.
- the weight average molecular weight of the vinyl group-containing organopolysiloxane is preferably 20,000 or more and 160,000 or less.
- SiH group-containing compounds include organohydrogenpolysiloxanes and organic polymers having diorganohydrogensilyl groups, with organohydrogenpolysiloxanes being preferred. You may contain 2 or more types of these.
- the organohydrogenpolysiloxane can have a linear, cyclic, branched or network molecular structure.
- the following are exemplified.
- Polymethylhydrogensiloxane with both molecular chain ends blocked with trimethylsiloxy groups dimethylsiloxane-methylhydrogensiloxane copolymer with both molecular chain ends blocked with trimethylsiloxy groups, molecular chain ends with trimethylsiloxy groups Blocked dimethylsiloxane/methylhydrogensiloxane/methylphenylsiloxane copolymer, dimethylpolysiloxane with both ends of the molecular chain blocked with dimethylhydrogensiloxy groups, and both ends of the molecular chain with dimethylhydrogensiloxy groups It is a dimethylsiloxane/methylphenylsiloxane copolymer, a methylphenylpolysiloxane having both ends of the molecular chain blocked with dimethylhydrogensiloxy groups.
- SiH group-containing compound a homopolymer of a siloxane structural unit represented by the following general formula (II), or a siloxane structural unit represented by the general formula (II) and a siloxane structure represented by the general formula (III) Unit copolymers are preferred from the viewpoint of ink repellency.
- the content ratio ((II)/((II)+(III))) is preferably 50 mol % or more from the viewpoint of having a large amount of reactive functional groups per molecule and excellent reaction speed and curability.
- reaction inhibitors include nitrogen-containing compounds, phosphorus-based compounds, and unsaturated alcohols, and alcohols containing acetylene groups are preferably used. You may contain 2 or more types of these. By containing these reaction inhibitors, the curing speed of the silicone rubber layer can be adjusted.
- the content of the reaction inhibitor in the silicone rubber layer composition is preferably 0.01% by mass or more and 20% by mass or less, more preferably 0.1% by mass or more and 15% by mass or less. When the content of the reaction inhibitor in the silicone rubber layer composition is 0.01% by mass or more, the stability of the silicone rubber layer composition and its solution can be ensured, and when it is 20% by mass or less, the silicone rubber layer is cured. It does not significantly reduce performance.
- the curing catalyst can be selected from known ones. Platinum-based compounds are preferred, and specific examples thereof include simple platinum, platinum chloride, chloroplatinic acid, olefin-coordinated platinum, alcohol-modified platinum complexes, and methylvinylpolysiloxane complexes of platinum. You may contain 2 or more types of these.
- the content of the curing catalyst is preferably 0.001% by mass or more and 20% by mass or less, more preferably 0.01% by mass or more and 15% by mass or less in the silicone rubber layer composition. If the content of the curing catalyst is 0.001% by mass or more, the silicone rubber layer can be sufficiently cured, and if it is 20% by mass or less, the stability of the silicone rubber layer composition and its solution can be ensured.
- the ink repellent layer may contain a compound represented by the following general formula (IV) for the purpose of improving adhesion with other adjacent layers.
- R—Si—(X) 3 (IV) In general formula (IV), R represents an alkyl group, an aryl group or a vinyl group, and X represents an acetoxy group or a dialkyloxyimino group.
- the ink-repellent layer containing the compound represented by the general formula (IV) When the ink-repellent layer containing the compound represented by the general formula (IV) is in contact with the heat-sensitive layer, the compound represented by the general formula (IV) and the hydroxyl groups and imino groups on the surface of the heat-sensitive layer are bonded through a condensation reaction. , the adhesion between the ink-repellent layer and the heat-sensitive layer becomes stronger. As a result, peeling from the interface between the ink repellent layer and the heat-sensitive layer during printing and breakage near the surface of the heat-sensitive layer are suppressed, and printing durability can be significantly improved.
- the content of the compound represented by general formula (IV) is preferably 1% by mass or more and 20% by mass or less, more preferably 4% by mass or more and 10% by mass or less in the silicone rubber layer composition. If the content of the compound is 1% by mass or more, the adhesion to other adjacent layers can be improved. can be suppressed.
- the printing plate precursor according to the first aspect of the present invention is irradiated with infrared rays of 100 mJ/cm 2 at least in part, using a spectrophotometer with a cyan, yellow, magenta or black filter. It is preferable that the difference in reflection density between the exposed area and the unexposed area measured from the ink repellent layer side is 0.30 or more. If the reflection density difference between the exposed area and the unexposed area is 0.30 or more, the contrast between the image area and the non-image area can be increased by infrared irradiation, and the image pattern is mechanically discriminated, rearranged and/or Alternatively, when performing classification, it is possible to improve reading accuracy.
- the reflection density difference is preferably 0.35 or more, more preferably 0.45 or more, and even more preferably 0.50 or more.
- the reflection density difference between the image area and the non-image area can be measured using a spectrophotometer (eg, "eXact" advance (manufactured by x-rite)).
- a spectrophotometer with a filter selected from cyan, magenta, yellow and black filters on samples taken from the waterless planographic printing plate precursor, the reflection densities of the non-image area and the image area were measured from the ink repellent layer side. is measured 10 times, and the average value is taken as the reflection density of the image portion and the non-image portion when each filter is applied.
- the absolute value of (non-image area reflection density - image area reflection density) is defined as the reflection density difference, and the reflection density differences when cyan, magenta, yellow, and black filters are applied are ⁇ D C , ⁇ D M , ⁇ D Y , and ⁇ D, respectively.
- K K.
- ⁇ D C , ⁇ D Y , ⁇ D M and ⁇ D K the largest value is taken as the reflection density difference, and the contrast is evaluated.
- the printing plate precursor of the second aspect of the present invention can be obtained by measuring the ink using a cyan filtered spectrophotometer when at least part of the waterless lithographic printing plate precursor is irradiated with infrared rays of 100 mJ/cm 2 .
- the reflection density difference ⁇ D C between the exposed portion and the unexposed portion measured from the repelling layer side becomes 0.30 or more. If the reflection density difference ⁇ D C between the exposed area and the unexposed area is 0.30 or more, the contrast between the image area and the non-image area can be increased by infrared irradiation, and the image pattern can be mechanically discriminated and rearranged. And/or when performing classification, reading accuracy can be improved.
- the reflection density difference ⁇ D C is preferably 0.35 or more, more preferably 0.45 or more, and even more preferably 0.50 or more.
- Means for adjusting the reflection density difference between the exposed area and the unexposed area to 0.30 or more include, for example, the substrate having a white layer or a white surface, (a) an infrared absorbing dye, (b) a dye and (c) ) a method of combining with a heat-sensitive layer containing a proton-donating compound.
- (b) a method of using a dye having a maximum absorption wavelength in the range of 500 to 650 nm when colored by proton acceptance is used.
- the method for producing a waterless lithographic printing plate includes the steps of (1) exposing the printing plate precursor of the present invention according to a desired image to form an image area and a non-image area (hereinafter referred to as "step (1) ”). After step (1), the process further includes (2) a step of removing the ink repellent layer in the image area of the exposed waterless lithographic printing plate precursor (hereinafter sometimes referred to as "step (2)"). is preferred.
- Light sources used for exposure include those having an emission wavelength range of 300 nm to 1500 nm.
- semiconductor lasers and YAG lasers which have an emission wavelength region near the near-infrared region, are preferably used because they are widely used as absorption wavelengths of the heat-sensitive layer.
- laser light with a wavelength of 780 nm, 830 nm or 1064 nm is preferably used from the viewpoint of conversion efficiency into heat.
- the exposure energy is preferably 70 to 200 mJ/cm 2 , more preferably 90 to 110 mJ/cm 2 from the viewpoints of image reproducibility, productivity, and suppression of peeling of the ink repellent layer.
- the contrast between the image area and the non-image area of the waterless lithographic printing plate after step (1) can be evaluated by reflection density as described above.
- the reflection density difference ⁇ D C between the image area and the non-image area of the waterless lithographic printing plate measured from the ink repellent layer side after step (1) is 0.00 when a cyan filter is applied.
- the number is preferably 30 or more, and reading accuracy can be improved in the sorting method for waterless lithographic printing plates to be described later.
- the reflection density difference ⁇ D C is more preferably 0.35 or more, more preferably 0.45 or more, and even more preferably 0.50 or more.
- Means for making the reflection density difference ⁇ D C 0.30 or more include, for example, the method of using the printing plate precursor of the present invention described above.
- step (2) By applying a physical stimulus to the exposed printing plate precursor, the ink repellent layer in the exposed area (image area) is removed.
- the method of applying a physical stimulus include (i) a method of rubbing the plate surface with nonwoven fabric, absorbent cotton, cloth, sponge, rubber, etc. in the absence of liquid, (ii) nonwoven fabric, absorbent cotton, cloth impregnated with water, A method of wiping the plate surface with a sponge or the like, (iii) a method of rubbing the other side with a rotating brush while showering with water, and (iv) a method of injecting high-pressure water, hot water, or steam onto the plate surface.
- the waterless lithographic printing plate precursor of the present invention enables chemical-free development in step (2) without using chemical solutions containing organic solvents, such as conventional pretreatment solutions, developers, and posttreatment solutions.
- chemical-free development the heat-sensitive layer is not dissolved by chemicals for development, so peeling of the ink repellent layer can be significantly suppressed.
- Part or all of the development process can be performed automatically by an automatic processor.
- automatic processors include TWP-680 series (manufactured by HEIGHTS), TWP-1250 series (manufactured by HEIGHTS), TWL-650 series (manufactured by Toray Industries, Inc.), and TWL-860 series (manufactured by Toray Industries, Inc.). , TWL-1160 series (manufactured by Toray Industries, Inc.), etc., and the pedestal is recessed into a curved surface in order to suppress the occurrence of scratches on the back surface of the plate as described in Japanese Patent Application Laid-Open No. 5-6000. Examples include an automatic developing machine. You may use these in combination.
- a management number for management in addition to an image for printing, a management number for management, a one-dimensional code (such as a bar code), a two-dimensional code (“QR code” (registered trademark), a two-dimensional code (“QR code” (registered trademark), machine-readable image patterns, such as micro "QR Codes", DataMatrix, MaxiCode, PDF417, MicroPDF417, etc.).
- a management number for management such as a bar code
- QR code registered trademark
- QR code two-dimensional code
- QR code registered trademark
- machine-readable image patterns such as micro "QR Codes", DataMatrix, MaxiCode, PDF417, MicroPDF417, etc.
- Systems capable of such sorting include the Plate Sorting system of NELA.
- the waterless lithographic printing plate of the present invention has a high contrast between exposed and unexposed areas, and can improve machine read accuracy when used in such a system.
- the method for producing a printed matter of the present invention comprises the steps of applying ink to the surface of the waterless lithographic printing plate obtained by the above-described method of producing a lithographic printing plate of the present invention, and applying the ink directly or through a blanket to a substrate to be printed. including the step of transferring to As the waterless planographic printing plate, it is preferable to use the waterless planographic printing plate sorted by the sorting method described above.
- a waterless lithographic printing plate is a lithographic printing plate that can be printed without using dampening water.
- a layer derived from the heat-sensitive layer becomes an ink-receiving layer, which becomes an image area.
- the ink repellent layer becomes a non-image area. It can be said that the ink-receiving layer and the ink-repellent layer are almost on the same plane with only a micron-order step.
- ink is adhered only to the image portion, and then the ink is transferred to the printing medium for printing. Examples of the printing medium include thin paper, cardboard, film, and labels.
- the ink may be transferred directly from the waterless lithographic printing plate to the printing medium, or may be transferred through a blanket.
- UV ink As the ink used in the method for producing printed matter of the present invention, oil-based ink used in newspaper/commercial printing, ink that can be cured by active energy rays, and the like can be used. Ink that is cured by ultraviolet irradiation (hereinafter sometimes referred to as "UV ink”) is a reactive monomer or reactive oligomer, a photopolymerization initiator and, if necessary, a sensitizer, a photosensitive resin, etc. by ultraviolet rays. It is common to include a polymerizable photosensitive component.
- the ink that is cured by electron beam irradiation (hereinafter sometimes referred to as "EB ink") must contain a photosensitive component that can be polymerized by electron beams, such as a reactive monomer, a reactive oligomer, or a photosensitive resin. is common.
- An offset printing press is preferable as the printing press used to produce printed matter from the waterless lithographic printing plate of the present invention. Both sheet-fed presses and rotary presses can be used.
- Step of forming image areas and non-image areas by exposing according to desired image A size sample was taken and mounted on an exposure machine "PlateRite" 8900E (manufactured by Screen Graphic Solutions Co., Ltd.). An image area and a non-image area were formed by exposing with an irradiation energy of 100 mJ/cm 2 .
- 10 sets each of 100 dots of halftone dots of size 20 ⁇ m ⁇ 20 ⁇ m and halftone dots of size 10 ⁇ m ⁇ 20 ⁇ m were formed at a resolution of 2400 dpi and an interval of 175 lpi were formed as images for image reproduction rate evaluation.
- Such exposure conditions are severe conditions that promote thermal decomposition in the vicinity of the boundary between the ink-repellent layer and the heat-sensitive layer, weaken the adhesion between the ink-repellent layer and the heat-sensitive layer, and easily cause the ink-repellent layer to come off.
- a solid image of 100 mm ⁇ 100 mm was formed in the image area.
- the exposed waterless lithographic printing plate precursor is passed through an automatic processor TWL-1160F (manufactured by Toray Industries, Inc.) at a conveying speed of 40 cm/min to 80 cm/min at intervals of 10 cm/min. The repellent layer was removed.
- a score of 1 or more is practical, 3 or more is preferable, and 5 is more preferable.
- the reflection density difference was 0.30 or more, there is no practical problem, if it is 0.35 or more, it is generally good, if it is 0.45 or more, it is good, and if it is 0.50 or more, it is very good. determined to be
- Example 1 A waterless lithographic printing plate precursor was prepared by the following method.
- ⁇ Substrate with white surface> The surface of a degreased aluminum substrate (manufactured by Mitsubishi Aluminum Co., Ltd.) with a thickness of 0.24 mm was coated with three bundled nylon brushes with a single yarn diameter of 0.3 mm and a pumice-water suspension with a median diameter of 25 ⁇ m (specific gravity: 1.1 g). /cm 3 ) and washed well with water.
- the substrate was etched by immersing it in a 25% by mass sodium hydroxide aqueous solution at 45° C. for 9 seconds, washed with water, further immersed in 20% by mass of nitric acid at 60° C. for 20 seconds, and washed with water.
- the grained aluminum substrate was subjected to continuous electrochemical graining treatment in an electrolytic solution using an AC voltage of 60 Hz.
- the electrolytic solution at this time was a 1% by mass aqueous solution of nitric acid (containing 0.5% by mass of aluminum ions), and the liquid temperature was 50°C.
- the alternating current power waveform is a trapezoidal square wave alternating current with a time TP of 0.8 msec until the current value reaches a peak from zero and a duty ratio of 1: 1, and a carbon electrode is used as a counter electrode for electrochemical graining treatment. did Ferrite was used for the auxiliary anode.
- the current density was 30 A/dm 2 at the peak current value, and 5% of the current flowing from the power source was diverted to the auxiliary anode.
- the amount of electricity in nitric acid electrolysis was 175 C/dm 2 when the aluminum plate was the anode. Then, it was washed with water by spraying.
- the amount of electricity when the aluminum substrate is used as the anode is 50 C/dm 2 .
- An electrochemical surface roughening treatment was performed under the same conditions as the above nitric acid electrolysis, and then water washing was performed by spraying.
- a DC anodized film of 2.5 g/m 2 was provided on this substrate at a current density of 15 A/dm 2 using 15% sulfuric acid (containing 0.5% by mass of aluminum ions) as an electrolyte, followed by washing with water and drying. Furthermore, it was immersed in a 2.5% by mass aqueous solution of sodium silicate at 30° C. for 10 seconds to obtain a substrate having a white surface.
- the obtained base material having a white surface had a center line average roughness (Ra) of 0.51 ⁇ m and a reflectance of 50% or more over the entire wavelength range of 450 to 700 nm.
- Heat-sensitive layer composition solution-1 was applied onto the base material having the white surface and dried by heating at 140°C for 90 seconds to form a heat-sensitive layer with a thickness of 1.5 ⁇ m.
- Heat-sensitive layer composition solution-1 was obtained by stirring and mixing the following components at room temperature.
- Methylol group type methylated melamine resin "CYMEL" (registered trademark) 370 (manufactured by Allnex, viscosity: 5100 to 10200 mPa s): 83.0 parts by mass
- Infrared absorbing dye (cyanine dye): NK5559 ( Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 11.0 parts by mass
- Dye that develops color upon proton reception (azo compound having a maximum absorption wavelength of 420 nm when receiving protons): Metanyl Yellow (Tokyo Chemical Industry Co., Ltd.) Co., Ltd.): 5.0 parts by mass
- proton-donating compound p-toluenesulfonic acid: 1.0 parts by mass
- tetrahydrofuran 900 parts by mass.
- the following ink-repellent layer (silicone rubber layer) composition solution prepared immediately before coating was applied onto the heat-sensitive layer and heated at 140° C. for 80 seconds to form an ink-repellent layer having an average thickness of 2.5 ⁇ m, A waterless lithographic printing plate precursor was obtained.
- the ink repellent layer composition solution was obtained by stirring and mixing the following components at room temperature.
- the image reproduction rate was 90% reproduction of halftone dots of 20 ⁇ m ⁇ 20 ⁇ m, which was satisfactory in practical use.
- the resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference .DELTA.DY measured with a yellow filter was 0.30, which is practically acceptable.
- Example 2 "Lumirror” (registered trademark) #225-E6SR (white PET film, manufactured by Toray Industries, Inc.) having a reflectance of 70% or more in the entire wavelength range of 450 to 700 nm was used as the substrate having a white surface.
- a waterless lithographic printing plate precursor was obtained in the same manner as in Example 1 except for the above.
- the image reproduction rate was 90% reproduction of halftone dots of 20 ⁇ m ⁇ 20 ⁇ m, which was satisfactory in practical use.
- the resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference .DELTA.DY measured with a yellow filter was 0.31, which is practically acceptable.
- Example 3 The following organic layer composition liquid-1 was applied to a degreased aluminum substrate (manufactured by Mitsubishi Aluminum Co., Ltd.) with a thickness of 0.24 mm and dried at 200 ° C. for 90 seconds to provide an organic layer with a thickness of 10.0 ⁇ m. , to obtain a substrate with a white layer.
- the resulting substrate having a white layer had a reflectance of 75% or more over the entire wavelength range of 450 to 700 nm.
- the organic layer composition liquid-1 was obtained by stirring and mixing the following components at room temperature.
- a waterless lithographic printing plate precursor was obtained in the same manner as in Example 1, except that the substrate having a white surface was changed to the substrate having a white layer.
- the image reproduction rate was 90% reproduction of halftone dots of 20 ⁇ m ⁇ 20 ⁇ m, which was satisfactory in practical use.
- the resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference .DELTA.DY measured with a yellow filter was 0.33, which is practically acceptable.
- Example 4 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-2.
- Methylol group type methylated melamine resin "CYMEL" (registered trademark) 370 (manufactured by Allnex, viscosity: 5100 to 10200 mPa s): 82.0 parts by mass
- Infrared absorbing dye (cyanine dye): NK5559 ( Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 12.0 parts by mass
- dye that develops color upon proton reception (azo compound having a maximum absorption wavelength of 420 nm when receiving protons): Metanil Yellow (Tokyo Chemical Industry Co., Ltd.) Co., Ltd.): 5.0 parts by mass
- proton-donating compound p-toluenesulfonic acid: 1.0 parts by mass
- tetrahydrofuran 900 parts by mass.
- the image reproduction rate was 100% reproduction for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 10% reproduction for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m, indicating good image reproducibility.
- the resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference .DELTA.DY measured with a yellow filter was 0.33, which is practically acceptable.
- Example 5 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-3.
- Methylol group type methylated melamine resin "CYMEL" (registered trademark) 370 (manufactured by Allnex, viscosity: 5100 to 10200 mPa s): 80.0 parts by mass
- Infrared absorbing dye (cyanine dye): NK5559 ( Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 14.0 parts by mass
- Dye that develops color upon proton reception an azo compound having a maximum absorption wavelength of 420 nm when receiving protons
- Metanil Yellow Tokyo Chemical Industry Co., Ltd.) Co., Ltd.
- proton-donating compound p-toluenesulfonic acid: 1.0 parts by mass
- tetrahydrofuran 900 parts by mass.
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference .DELTA.DY measured with a yellow filter was 0.35, which was generally good.
- Example 6 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-4.
- Methylol group type methylated melamine resin "CYMEL" (registered trademark) 370 (manufactured by Allnex, viscosity: 5100 to 10200 mPa s): 76.0 parts by mass
- Infrared absorbing dye cyanine dye
- NK5559 Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm
- Dye that develops color upon proton reception (azo compound having a maximum absorption wavelength of 420 nm when receiving protons): Metanyl Yellow (Tokyo Chemical Industry Co., Ltd.) Co., Ltd.): 5.0 parts by mass
- proton-donating compound p-toluenesulfonic acid: 1.0 parts by mass
- tetrahydrofuran 900 parts by mass.
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 55% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m, indicating very good image reproducibility.
- Met. The resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference .DELTA.DY measured with a yellow filter was 0.40, which was generally good.
- Example 7 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-5.
- Methylol group type methylated melamine resin "CYMEL" (registered trademark) 370 (manufactured by Allnex, viscosity: 5100 to 10200 mPa s): 74.0 parts by mass
- Infrared absorbing dye cyanine dye
- NK5559 Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm
- Dye that develops color upon proton reception an azo compound having a maximum absorption wavelength of 420 nm when receiving protons
- Metanyl Yellow Tokyo Chemical Industry Co., Ltd.) Co., Ltd.
- proton-donating compound p-toluenesulfonic acid: 1.0 parts by mass
- tetrahydrofuran 900 parts by mass.
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 70% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m, indicating very good image reproducibility.
- Met. The resistance to peeling of the ink repellent layer was 2 points.
- the reflection density difference .DELTA.DY measured with a yellow filter was 0.42, which was generally good.
- Example 8 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-6.
- Methylol group type methylated melamine resin "CYMEL" (registered trademark) 370 (manufactured by Allnex, viscosity: 5100 to 10200 mPa s): 69.0 parts by mass
- Infrared absorbing dye (cyanine dye): NK5559 ( Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 25.0 parts by mass
- Dye that develops color upon proton reception an azo compound having a maximum absorption wavelength of 420 nm when receiving protons
- Metanil Yellow Tokyo Chemical Industry Co., Ltd.) Co., Ltd.
- proton-donating compound p-toluenesulfonic acid: 1.0 parts by mass
- tetrahydrofuran 900 parts by mass.
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 80% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m, indicating very good image reproducibility.
- Met. The resistance to peeling of the ink repellent layer was 1 point.
- the reflection density difference .DELTA.DY measured with a yellow filter was 0.42, which was generally good.
- Example 9 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-7.
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference ⁇ DY measured with a yellow filter was 0.45, which was a good result.
- Example 10 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-8.
- Methylol group type methylated melamine resin "CYMEL" (registered trademark) 370 (manufactured by Allnex, viscosity: 5100 to 10200 mPa s): 80.0 parts by mass
- Infrared absorbing dye cyanine dye
- NK5559 Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm
- Dye that develops color upon receiving protons leuco dye that has a maximum absorption wavelength of 570 nm when receiving protons
- Blue203 (3-[4- (Diethylamino)-2-hexyloxyphenyl]-3-(1-ethyl-2-methylindol-3-yl)-4-azaphthalide, manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 5.0 parts by mass
- Proton donating compound p-
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.48, which was a good result.
- Example 11 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-9.
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 4 points, which was good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.48, which was a good result.
- Example 12 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-10.
- ⁇ Heat-sensitive layer composition solution-10> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 14.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 570 nm) Leuco dye): Blue 203 (3-[4-(diethylamino)-2-hexyloxyphenyl]-3-(1-ethyl-2-methylindol-3-yl)-4-azaphthalide, Fukui Yamada Chemical Industry ( (manufactured by Sumitomo Bakelite Co., Ltd.): 5.0 parts by mass (iii) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolak resin “Sumilite Resin” (registered trademark) PR53195 (manufactured
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.48, which was a good result.
- Example 13 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-11.
- ⁇ Heat-sensitive layer composition solution-11> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 11.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 580 nm) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 5.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolak resin “Sumilite Resin” (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 67.2 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproduction rate was 90% reproduction of halftone dots of 20 ⁇ m ⁇ 20 ⁇ m, which was satisfactory in practical use.
- the resistance to peeling of the ink repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.43, which was generally good.
- Example 14 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-12.
- ⁇ Heat-sensitive layer composition solution-12> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 12.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 580 nm) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 5.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolac resin “Sumilite Resin” (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 66.4 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproduction rate was 100% reproduction for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 10% reproduction for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m, indicating good image reproducibility.
- the resistance to peeling of the ink repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.43, which was generally good.
- Example 15 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-13.
- ⁇ Heat-sensitive layer composition solution-13> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 18.0 parts by mass (ii) Dye that develops color upon proton reception (maximum absorption wavelength of 580 nm when receiving protons) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 5.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolac resin “Sumilite Resin” (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 61.6 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 55% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m, indicating very good image reproducibility.
- Met. The resistance to peeling of the ink repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.50, which was a very good result.
- Example 16 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-14.
- ⁇ Heat-sensitive layer composition solution-14> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 20.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 580 nm) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 5.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolac resin "Sumilite Resin" (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 60.0 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 70% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m, indicating very good image reproducibility.
- Met. The resistance to peeling of the ink repellent layer was 4 points, which was good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.52, which is a very good result.
- Example 17 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-15.
- ⁇ Heat-sensitive layer composition solution-15> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 25.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 580 nm) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 5.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolac resin “Sumilite Resin” (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 56.0 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 80% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m, indicating very good image reproducibility.
- Met. The resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.52, which is a very good result.
- Example 18 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-16.
- ⁇ Heat-sensitive layer composition solution-16> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 14.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 580 nm) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 5.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolac resin “Sumilite Resin” (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 64.8 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.48, which was a good result.
- Example 19 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-17.
- ⁇ Heat-sensitive layer composition solution-17> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 14.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 580 nm) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 7.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolac resin “Sumilite Resin” (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 63.2 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.51, which is a very good result.
- Example 20 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-18.
- ⁇ Heat-sensitive layer composition solution-18> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 14.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 580 nm) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 11.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolac resin "Sumilite Resin" (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 60.0 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.55, which is a very good result.
- Example 21 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-19.
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.59, which is a very good result.
- Example 22 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-1 was changed to the following heat-sensitive layer composition solution-20.
- ⁇ Heat-sensitive layer composition solution-20> Infrared absorbing dye (cyanine dye): NK5559 (manufactured by Hayashibara Co., Ltd., maximum absorption wavelength: 774 nm): 14.0 parts by mass (ii) Dye that develops color upon receiving protons (maximum absorption wavelength when receiving protons is 580 nm) Leuco dye): FB-1 (3′,6′-bis(diphenylamino)spiro[phthalido-3,9′-xanthene], manufactured by Fukui Yamada Chemical Industry Co., Ltd.): 17.0 parts by mass (iii ) Proton-donating compound (polymer having an active hydrogen-containing structural unit): Phenol-formaldehyde novolak resin “Sumilite Resin” (registered trademark) PR53195 (manufactured by Sumitomo Bakelite Co., Ltd.): 55.2 parts by mass (iv) Organic complex compound : Titanium salt
- the image reproducibility was 100% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m and 30% for halftone dots of 10 ⁇ m ⁇ 20 ⁇ m. Met.
- the resistance to peeling of the ink repellent layer was 3 points, which was good.
- the reflection density difference ⁇ D C measured with a cyan filter was 0.59, which is a very good result.
- the following organic layer composition liquid-2 was applied onto a degreased aluminum substrate (manufactured by Mitsubishi Aluminum Co., Ltd.) with a thickness of 0.24 mm and dried at 200 ° C. for 90 seconds to form an organic layer with a thickness of 10.0 ⁇ m. rice field.
- the resulting substrate with an organic layer had a reflectance of less than 50% over the entire wavelength range of 450-700 nm.
- the organic layer composition liquid-2 was obtained by stirring and mixing the following components at room temperature.
- Heat-sensitive layer composition solution-21 was applied onto the organic layer and dried by heating at 140°C for 90 seconds to form a heat-sensitive layer having a thickness of 1.5 ⁇ m.
- Heat-sensitive layer composition solution-21 was obtained by stirring and mixing the following components at room temperature.
- the resistance to peeling of the ink repellent layer was 5 points, which was very good, but the image reproduction rate was insufficient, at 60% reproduction of halftone dots of 20 ⁇ m ⁇ 20 ⁇ m.
- the reflection density difference ⁇ D C measured with a cyan filter was as low as 0.15, the information could not be read by machine, resulting in impractical use.
- the image reproduction rate was 90% for halftone dots of 20 ⁇ m ⁇ 20 ⁇ m, which was satisfactory for practical use.
- the resistance to peeling of the ink-repellent layer was as low as 0 points.
- the reflection density difference ⁇ D C measured with a cyan filter was as low as 0.20, so the information could not be read by a machine, resulting in impractical use.
- Example 3 A lithographic printing plate precursor was obtained in the same manner as in Example 3, except that the heat-sensitive layer composition solution-3 was changed to the following heat-sensitive layer composition solution-22.
- the image reproducibility was excellent, with a halftone dot of 20 ⁇ m ⁇ 20 ⁇ m being reproduced at 100% and a halftone dot of 10 ⁇ m ⁇ 20 ⁇ m being reproduced at 10%.
- the resistance to peeling of the ink-repellent layer was 5 points, which was very good.
- the reflection density difference ⁇ D C measured with a cyan filter is 0.03, which is difficult to even visually recognize, resulting in impractical use.
- Tables 1 and 2 show the main configurations and evaluation results of each example and comparative example.
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Abstract
Description
基材としては、従来印刷版の基材として用いられる、印刷工程において寸法的な変化の少ないものが好ましく用いられる。例えば、紙、金属、ガラス、プラスチックなどからなる基材が挙げられる。基材の材料としては、より具体的には、紙、プラスチック(ポリエチレン、ポリプロピレン、ポリスチレンなど)がラミネートされた紙;アルミニウム(アルミニウム合金も含む)、亜鉛、銅などの金属板;ソーダライム、石英などのガラス板;シリコンウエハー;セルロースアセテート、ポリエチレンテレフタレート、ポリエチレン、ポリエステル、ポリアミド、ポリイミド、ポリスチレン、ポリプロピレン、ポリカーボネート、ポリビニルアセタールなどのプラスチックのフィルム;上記金属がラミネートまたは蒸着された紙またはプラスチックフィルムなどが挙げられる。
本発明の感熱層は、少なくとも(a)最大吸収波長が700~1,000nmである赤外線吸収染料((a)赤外線吸収染料)、(b)プロトン受容により発色する色素((b)色素)、および(c)プロトン供与性化合物を含む。
インキ反発層としては、ポリオルガノシロキサンの架橋物であるシリコーンゴム層が好ましく使用できる。
-(SiR1R2-O-)n- (I)
一般式(I)中、nは2以上の整数を示す。R1およびR2はそれぞれ独立して炭素数1~50の飽和または不飽和の炭化水素基を表す。炭化水素基は直鎖状でも枝分かれ状でも環状でもよく、芳香環を含んでいてもよい。
-[SiH(CH3)-O-]- (II)
-[Si(CH3)2-O-]- (III)
SiH基含有化合物中の一般式(II)で表されるシロキサン構成単位と一般式(III)で表されるシロキサン構成単位の合計100モル%に対する一般式(II)で表されるシロキサン構成単位の含有比率((II)/((II)+(III)))は、1分子当たりに反応できる官能基量が多く、反応速度および硬化性に優れる点から50モル%以上であることが好ましい。
R-Si-(X)3 (IV)
一般式(IV)中、Rはアルキル基、アリール基またはビニル基、Xはアセトキシ基またはジアルキルオキシイミノ基を表す。
本発明の印刷版原版から水なし平版印刷版を製造する方法について説明する。水なし平版印刷版の製造方法は、前述の本発明の印刷版原版に対して、(1)所望の像に従って露光し、画像部と非画像部を形成する工程(以下、「工程(1)」と記載する場合がある)を有する。工程(1)の後、(2)露光された水なし平版印刷版原版の画像部のインキ反発層を除去する工程(以下、「工程(2)」と記載する場合がある)をさらに有することが好ましい。
本発明の水なし平版印刷版は、版面に、印刷のための画像以外に、管理のための管理番号、一次元コード(バーコードなど)、二次元コード(“QRコード”(登録商標)、マイクロ“QRコード”(登録商標)、DataMatrix、MaxiCode、PDF417、MicroPDF417など)などの、機械により情報を読み取れる画像パターンを形成することができる。このような水なし平版印刷版に形成された管理のための画像パターンを、機械で判別し、自動的に水なし平版印刷版の並び替えおよび/または分類を行うことにより、水なし平版印刷版の仕分けを行うことができる。このような仕分けが可能なシステムとしては、NELA社のPlate Sortingシステムなどが挙げられる。本発明の水なし平版印刷版は、露光部と未露光部のコントラストが大きく、このようなシステムに使用した場合に、機械による読み取り精度を向上させることができる。
本発明の水なし平版印刷版から印刷物を製造する方法について説明する。本発明の印刷物の製造方法は、前述の本発明の平版印刷版の製造方法により得られた水なし平版印刷版の表面にインキを付着させる工程および前記インキを直接またはブランケットを介して被印刷体に転写する工程を含む。水なし平版印刷版として、前述の仕分け方法により仕分けられた水なし平版印刷版を用いることが好ましい。
(1)所望の像に従って露光し、画像部と非画像部を形成する工程
各実施例および比較例により得られた水なし平版印刷版原版から670mm×560mmサイズのサンプルを採取し、露光機“PlateRite”8900E((株)Screenグラフィックソリューションズ製)に装着した。照射エネルギー100mJ/cm2で露光し、画像部と非画像部を形成した。画像部には、画像再現率評価用の画像として、サイズ20μm×20μmの網点およびサイズ10μm×20μmの網点それぞれ100ドットを解像度2400dpi、間隔175lpiで形成したものを10セットずつ形成した。
上記(1)の方法により露光された水なし平版印刷版原版を、自動現像機TWL-1160F(東レ(株)製)に搬送速度60cm/分で通し、画像部のインキ反発層を除去し、水なし平版印刷版を製造した。実施例、比較例1および3については、有機溶剤を含む前処理液、現像液、後処理液などを使用せず、自動現像機の現像槽に水のみを補充し、水をかけながら回転するブラシで版面を摩擦する“水現像”を行った。また、比較例2については、自動現像機の前処理槽に“NP-1”(東レ(株)製、水なし平版ネガ型用前処理液)を、現像槽に水をそれぞれ補充し、得られた水なし平版印刷版原版を“薬液現像”した。
上記(I)により得られた水なし平版印刷版のサイズ20μm×20μmの網点およびサイズ10μm×20μmの網点それぞれ100ドットを、25倍のルーペで観察した。各網点において、現像後に画像部のインキ反発層が除去されていれば画像が再現されているとした。また、現像後に画像部のインキ反発層が除去されていなければ画像が再現されていないとした。10セット中で最も画像再現性の低いものについて、100ドット中に再現されている微小網点数を画像再現率(%)として画像再現性を評価した。
各実施例および比較例により得られた水なし平版印刷版原版から670mm×560mmサイズのサンプルを採取し、露光機“PlateRite”8900E((株)Screenグラフィックソリューションズ製)に装着した。実用上好ましい上限の照射エネルギーである照射エネルギー200mJ/cm2で露光し、画像部と非画像部を形成した。かかる露光条件は、インキ反発層と感熱層の境界付近の熱分解を促進し、インキ反発層と感熱層の接着力を弱め、インキ反発層剥がれが生じやすい状態となる、厳しい条件である。画像部には、100mm×100mmのベタ画像を形成した。その後、露光された水なし平版印刷版原版を自動現像機TWL-1160F(東レ(株)製)に、搬送速度を40cm/分から80cm/分まで10cm/分毎に変えて通し、画像部のインキ反発層を除去した。各実施例、比較例1および3については、自動現像機の現像槽に水のみ補充し、比較例2については、現像槽に水、前処理槽に“NP-1”を補充した。水をかけながら回転するブラシで版面を摩擦することにより、インキ反発層にズリ応力を加え、インキ反発層剥がれが生じやすい状態とした。ベタ画像部と非画像部の境界を観察し、非画像部にインキ反発層剥がれが認められる搬送速度のうち、最も速い速度により、インキ反発層剥がれ耐性を評価した。
前記「(1)所望の像に従って露光し、画像部と非画像部を形成する工程」によって得られた水なし平版印刷版原版について、分光光度計“eXact”アドバンス(x-rite社製)を用いて、非画像部および画像部の反射濃度を測定し、非画像部と画像部の反射濃度差を算出した。測定はシアン、イエロー、マゼンダ、またはブラックのフィルターをかけた状態でそれぞれ行い、画像部と非画像部において、10回ずつ測定した平均値を画像部および非画像部の反射濃度とした。それぞれの(非画像部反射濃度-画像部反射濃度)の絶対値ΔDC、ΔDY、ΔDMおよびΔDKのうち、最も値の大きいものを反射濃度差とし、コントラストを評価した。反射濃度差が、0.30以上であれば実用上問題なく、0.35以上であれば概ね良好であり、0.45以上であれば良好であり、0.50以上であれば非常に良好であると判断した。
水なし平版印刷版原版を以下の方法で作製した。
厚み0.24mmの脱脂したアルミ基板(三菱アルミ(株)製)の表面を、単糸径0.3mmの束植ナイロンブラシ3本とメジアン径25μmのパミス-水懸濁液(比重1.1g/cm3)を用いて砂目立てして、水でよく洗浄した。この基板を45℃の25質量%水酸化ナトリウム水溶液に9秒間浸漬してエッチングを行い、水洗後、さらに60℃で20質量%硝酸に20秒間浸漬し、水洗した。
(i)メチロール基型メチル化メラミン樹脂:“CYMEL”(登録商標)370(Allnex製、粘度:5100~10200mPa・s):83.0質量部
(ii)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):11.0質量部
(iii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が420nmであるアゾ化合物):メタニルイエロー(東京化成工業株式会社製):5.0質量部
(iv)プロトン供与性化合物:p-トルエンスルホン酸:1.0質量部
(v)テトラヒドロフラン:900質量部。
(i)α,ω-ジビニルポリジメチルシロキサン:DMS-V35(重量平均分子量49,500、GELEST Inc.製):86.95質量部
(ii)メチルハイドロジェンシロキサン-ジメチルシロキサン共重合体RD-1((II)/((II)+(III))=0.5、東レ・ダウコーニング(株)製):4.24質量部
(iii)ビニルトリス(メチルエチルケトオキシイミノ)シラン:2.64質量部
(iv)白金触媒SRX212(東レ・ダウコーニング(株)製):6.17質量部
(v)“アイソパー”(登録商標)E(エッソ化学(株)製):900質量部。
白色表面を有する基材として、450~700nmの全波長範囲で反射率が70%以上である“ルミラー”(登録商標)#225-E6SR(白色PETフィルム、東レ(株)製)を用いたこと以外は実施例1と同様にして、水なし平版印刷版原版を得た。
厚み0.24mmの脱脂したアルミ基板(三菱アルミ(株)製)上に、下記の有機層組成物液-1を塗布し、200℃で90秒間乾燥し、厚み10.0μmの有機層を設け、白色層を有する基材を得た。得られた白色層を有する基材は、450~700nmの全波長範囲で反射率が75%以上であった。なお、有機層組成物液-1は、下記成分を室温にて撹拌混合することにより得た。白色表面を有する基材を上記白色層を有する基材に変更したこと以外は実施例1と同様にして、水なし平版印刷版原版を得た。
(i)活性水素を有するポリマー:エポキシ樹脂:“jER”(登録商標)1010(三菱ケミカル(株)製):29.2質量部
(ii)活性水素を有するポリマー:ポリウレタン:“サンプレン”(登録商標)LQ-T1331D(三洋化成工業(株)製、固形分濃度:20質量%):51.7質量部
(iii)アルミキレート:アルミキレートALCH-TR(川研ファインケミカル(株)製):4.5質量部
(iv)レベリング剤:“ディスパロン”(登録商標)LC951(楠本化成(株)製、固形分:10質量%):0.1質量部
(v)酸化チタン:“タイペーク”(登録商標)CR-50(石原産業(株)製)のN,N-ジメチルホルムアミド分散液(酸化チタン50質量%):14.5質量部
(vi)N,N-ジメチルホルムアミド:450質量部
(vii)メチルエチルケトン:150質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-2に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)メチロール基型メチル化メラミン樹脂:“CYMEL”(登録商標)370(Allnex製、粘度:5100~10200mPa・s):82.0質量部
(ii)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):12.0質量部
(iii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が420nmであるアゾ化合物):メタニルイエロー(東京化成工業株式会社製):5.0質量部
(iv)プロトン供与性化合物:p-トルエンスルホン酸:1.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-3に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)メチロール基型メチル化メラミン樹脂:“CYMEL”(登録商標)370(Allnex製、粘度:5100~10200mPa・s):80.0質量部
(ii)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(iii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が420nmであるアゾ化合物):メタニルイエロー(東京化成工業株式会社製):5.0質量部
(iv)プロトン供与性化合物:p-トルエンスルホン酸:1.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-4に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)メチロール基型メチル化メラミン樹脂:“CYMEL”(登録商標)370(Allnex製、粘度:5100~10200mPa・s):76.0質量部
(ii)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):18.0質量部
(iii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が420nmであるアゾ化合物):メタニルイエロー(東京化成工業株式会社製):5.0質量部
(iv)プロトン供与性化合物:p-トルエンスルホン酸:1.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-5に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)メチロール基型メチル化メラミン樹脂:“CYMEL”(登録商標)370(Allnex製、粘度:5100~10200mPa・s):74.0質量部
(ii)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):20.0質量部
(iii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が420nmであるアゾ化合物):メタニルイエロー(東京化成工業株式会社製):5.0質量部
(iv)プロトン供与性化合物:p-トルエンスルホン酸:1.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-6に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)メチロール基型メチル化メラミン樹脂:“CYMEL”(登録商標)370(Allnex製、粘度:5100~10200mPa・s):69.0質量部
(ii)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):25.0質量部
(iii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が420nmであるアゾ化合物):メタニルイエロー(東京化成工業株式会社製):5.0質量部
(iv)プロトン供与性化合物:p-トルエンスルホン酸:1.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-7に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)メチロール基型メチル化メラミン樹脂:“CYMEL”(登録商標)370(Allnex製、粘度:5100~10200mPa・s):80.0質量部
(ii)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(iii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が480nmであるロイコ染料):RED520(2-メチル-6-(N-p-トリル-N-エチルアミノ)-フルオラン、福井山田化学工業(株)製):5.0質量部
(iv)プロトン供与性化合物:p-トルエンスルホン酸:1.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-8に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)メチロール基型メチル化メラミン樹脂:“CYMEL”(登録商標)370(Allnex製、粘度:5100~10200mPa・s):80.0質量部
(ii)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(iii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が570nmであるロイコ染料):Blue203(3-[4-(ジエチルアミノ)-2-ヘキシルオキシフェニル]-3-(1-エチル-2-メチルインドール-3-イル)-4-アザフタリド、福井山田化学工業(株)製):5.0質量部
(iv)プロトン供与性化合物:p-トルエンスルホン酸:1.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-9に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が570nmであるロイコ染料):Blue203(3-[4-(ジエチルアミノ)-2-ヘキシルオキシフェニル]-3-(1-エチル-2-メチルインドール-3-イル)-4-アザフタリド、福井山田化学工業(株)製):5.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):ポリ(メタクリル酸)(富士フイルム和光純薬(株)製):81.0質量部
(iv)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-10に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が570nmであるロイコ染料):Blue203(3-[4-(ジエチルアミノ)-2-ヘキシルオキシフェニル]-3-(1-エチル-2-メチルインドール-3-イル)-4-アザフタリド、福井山田化学工業(株)製):5.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):64.8質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):16.2質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-11に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):11.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):5.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):67.2質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):16.8質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-12に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):12.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):5.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):66.4質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):16.6質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-13に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):18.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):5.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):61.6質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):15.4質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-14に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):20.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):5.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):60.0質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):15.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-15に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):25.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):5.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):56.0質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):14.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-16に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):5.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):64.8質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):16.2質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-17に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):7.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):63.2質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):15.8質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-18に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):11.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):60.0質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):15.0質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-19に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):15.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):56.8質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):14.2質量部
(v)テトラヒドロフラン:900質量部。
感熱層組成物溶液-1を以下の感熱層組成物溶液-20に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):14.0質量部
(ii)プロトン受容により発色する色素(プロトン受容したときの最大吸収波長が580nmであるロイコ染料):FB-1(3’,6’-ビス(ジフェニルアミノ)スピロ[フタリド-3,9’-キサンテン]、福井山田化学工業(株)製):17.0質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):55.2質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):13.8質量部
(v)テトラヒドロフラン:900質量部。
厚み0.24mmの脱脂したアルミ基板(三菱アルミ(株)製)上に、下記の有機層組成物液-2を塗布し、200℃で90秒間乾燥し、厚み10.0μmの有機層を設けた。得られた有機層を有する基材は、450~700nmの全波長範囲で反射率が50%未満であった。なお、有機層組成物液-2は、下記成分を室温にて撹拌混合することにより得た。
(i)エポキシ・フェノール樹脂“カンコート”90T-25-3094(関西ペイント(株)製):100質量部
(ii)ジメチルホルムアミド:900質量部。
(i)赤外線吸収染料(シアニン色素):“PROJET”825LDI((株)Avecia製):11重量部
(ii)プロトン受容により発色する色素(ロイコ染料):“クリスタルバイオレットラクトン”(3,3-ビス(p-ジメチルアミノフェニル)-6-ジメチルアミノフタリド、山本化成(株)製):5質量部
(iii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):67.2質量部
(iv)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):16.8質量部
(v)テトラヒドロフラン:900質量部
次いで、塗布直前に調製した前記インキ反発層組成物溶液を前記感熱層上に塗布し、140℃で80秒間加熱し、平均膜厚2.5μmのインキ反発層を設け、水なし平版印刷版原版を得た。
(I-2)の露光された水なし平版印刷版原版の画像部のインキ反発層を除去する工程において、追加で自動現像機の前処理槽に“NP-1”(東レ(株)製、水なし平版ネガ型用前処理液)を投入し、得られた水なし平版印刷版原版を“薬液現像”した以外は、比較例1と同様に評価した。
感熱層組成物溶液-3を以下の感熱層組成物溶液-22に変更したこと以外は実施例3と同様にして、平版印刷版原版を得た。
(i)赤外線吸収染料(シアニン色素):NK5559(株式会社林原製、最大吸収波長:774nm):12.0質量部
(ii)プロトン供与性化合物(活性水素含有構造単位を有するポリマー):フェノールホルムアルデヒドノボラック樹脂“スミライトレジン”(登録商標)PR53195(住友ベークライト(株)製):70.4質量部
(iii)有機錯化合物:チタニウム-n-ブトキシドビス(アセチルアセトネート):“ナーセム”(登録商標)チタン(日本化学産業(株)製、濃度:73質量%、溶剤としてn-ブタノール:27質量%を含む):17.6質量部
(iv)テトラヒドロフラン:900質量部。
Claims (14)
- 少なくとも基材、感熱層およびインキ反発層をこの順に有する水なし平版印刷版原版であって、該基材が白色層または白色表面を有し、また、該感熱層が少なくとも(a)最大吸収波長が700~1,000nmである赤外線吸収染料、(b)プロトン受容により発色する色素および(c)プロトン供与性化合物を含む、水なし平版印刷版原版。
- 前記感熱層中に、前記(a)最大吸収波長が700~1,000nmである赤外線吸収染料を12~20質量%含む、請求項1に記載の水なし平版印刷版原版。
- 前記(b)プロトン受容により発色する色素として、ロイコ染料を含む、請求項1または2に記載の水なし平版印刷版原版。
- 前記(b)プロトン受容により発色する色素が、プロトン受容したときの最大吸収波長が500~650nmの範囲内である、請求項1~3のいずれかに記載の水なし平版印刷版原版。
- 前記(c)プロトン供与性化合物として、活性水素含有構造単位を有するポリマーを含む、請求項1~4のいずれかに記載の水なし平版印刷版原版。
- 前記(c)プロトン供与性化合物として、ノボラック樹脂を含む、請求項1~5のいずれかに記載の水なし平版印刷版原版。
- 少なくとも基材、感熱層およびインキ反発層をこの順に有する水なし平版印刷版原版であって、該水なし平版印刷版原版の少なくとも一部に100mJ/cm2の赤外線を照射したときに、シアンのフィルターをかけた分光光度計を用いて、インキ反発層側から測定した露光部と未露光部の反射濃度差ΔDCが0.30以上となる、平版印刷版原版。
- 請求項1~7のいずれかに記載の水なし平版印刷版原版に対して、(1)像に従って露光し、画像部と非画像部を形成する工程を有する、水なし平版印刷版の製造方法。
- 前記(1)像に従って露光し、画像部と非画像部を形成する工程の後、(2)露光された水なし平版印刷版原版の画像部のインキ反発層を除去する工程をさらに有する、請求項8に記載の水なし平版印刷版の製造方法。
- 前記(2)露光された水なし平版印刷版原版の画像部のインキ反発層を除去する工程において、有機溶剤を使用しない、請求項9に記載の水なし平版印刷版の製造方法。
- 前記(1)像に従って露光し、画像部と非画像部を形成する工程の後の、水なし平版印刷版の画像部と非画像部の、シアンのフィルターをかけた分光光度計を用いて、インキ反発層側から測定した露光部と未露光部の反射濃度差ΔDCが0.30以上である、請求項8~10のいずれかに記載の水なし平版印刷版の製造方法。
- 請求項8~11のいずれかに記載の製造方法により得られた水なし平版印刷版に形成された画像パターンを機械で判別し、並び替えおよび/または分類を行う、水なし平版印刷版の仕分け方法。
- 請求項8~11のいずれかに記載の製造方法により得られた水なし平版印刷版の表面にインキを付着させる工程および前記インキを直接またはブランケットを介して被印刷体に転写する工程を含む、印刷物の製造方法。
- 前記水なし平版印刷版として、請求項12に記載の方法により仕分けられた水なし平版印刷版を用いる、請求項13に記載の印刷物の製造方法。
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CN202280044633.5A CN117581157A (zh) | 2021-08-24 | 2022-08-01 | 无水平版印刷版原版、无水平版印刷版的制造方法和分拣方法以及印刷物的制造方法 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55113595A (en) * | 1979-02-23 | 1980-09-02 | Toray Ind Inc | Base plate for water-eliminating lithographic printing block |
JPS62240971A (ja) * | 1985-12-27 | 1987-10-21 | Toray Ind Inc | 水なし平版印刷用原版 |
JPH11352674A (ja) * | 1998-06-10 | 1999-12-24 | Toray Ind Inc | 直描型水なし平版印刷版原版 |
JP2001051409A (ja) * | 1999-06-01 | 2001-02-23 | Toray Ind Inc | 直描型水なし平版印刷版原版 |
WO2007037090A1 (ja) * | 2005-09-29 | 2007-04-05 | Konica Minolta Medical & Graphic, Inc. | 画像形成材料 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55113595A (en) * | 1979-02-23 | 1980-09-02 | Toray Ind Inc | Base plate for water-eliminating lithographic printing block |
JPS62240971A (ja) * | 1985-12-27 | 1987-10-21 | Toray Ind Inc | 水なし平版印刷用原版 |
JPH11352674A (ja) * | 1998-06-10 | 1999-12-24 | Toray Ind Inc | 直描型水なし平版印刷版原版 |
JP2001051409A (ja) * | 1999-06-01 | 2001-02-23 | Toray Ind Inc | 直描型水なし平版印刷版原版 |
WO2007037090A1 (ja) * | 2005-09-29 | 2007-04-05 | Konica Minolta Medical & Graphic, Inc. | 画像形成材料 |
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