WO2015012132A1 - Ensemble d'encres, procédé d'enregistrement par jet d'encre, et corps de coloration - Google Patents

Ensemble d'encres, procédé d'enregistrement par jet d'encre, et corps de coloration Download PDF

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Publication number
WO2015012132A1
WO2015012132A1 PCT/JP2014/068597 JP2014068597W WO2015012132A1 WO 2015012132 A1 WO2015012132 A1 WO 2015012132A1 JP 2014068597 W JP2014068597 W JP 2014068597W WO 2015012132 A1 WO2015012132 A1 WO 2015012132A1
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Prior art keywords
ink
colored
mass
recording
ink set
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PCT/JP2014/068597
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English (en)
Japanese (ja)
Inventor
麻衣子 井内
彬 川口
竜 石井
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日本化薬株式会社
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Priority to JP2015528230A priority Critical patent/JP6792942B2/ja
Publication of WO2015012132A1 publication Critical patent/WO2015012132A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/32—Inkjet printing inks characterised by colouring agents
    • C09D11/322—Pigment inks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/40—Ink-sets specially adapted for multi-colour inkjet printing

Definitions

  • the present invention relates to an ink set, an ink jet recording method using the ink set, and a colored body colored by the ink set.
  • the ink jet recording method which is one of the representative methods, generates a small droplet of ink in accordance with a recording signal and attaches it to a recording material such as paper for recording. It is a method to do. Due to recent advances in inkjet technology, it is also expected to be used in digital commercial printing, and inkjet recording methods have come to be used in the field of high-definition printing that has been performed by silver salt photography and offset printing. It was.
  • ink jet recording method using water-based ink in addition to a recording material having an ink receiving layer such as ink jet exclusive paper; ink jet glossy paper; A recording material having no layer is also used.
  • a recording material having an ink receiving layer such as ink jet exclusive paper; ink jet glossy paper; A recording material having no layer is also used.
  • the recording material that does not have an ink receptive layer is difficult to permeate the ink. Therefore, when water-based pigment ink is used, bleeding between colors (color bleeding) and uniformity of the resulting image are obtained.
  • the phenomenon of low (Mottling) may occur. Since recording on a recording material without an ink receiving layer is also actively performed, suppression of these phenomena is considered as one major issue.
  • Patent Document 1 discloses an ink that can realize a high-quality image without mottling or bleeding by adding an anionic or nonionic surfactant and an alkanediol such as 1,2-hexanediol. Is disclosed.
  • Patent Document 2 discloses an ink set in which quick-drying is improved and bleeding is suppressed by adding a water-soluble compound having a certain hydrophilicity / hydrophobicity coefficient to the ink.
  • Patent Documents 3 and 4 disclose ink sets in which a bleed phenomenon is suppressed by adding a polymer to the ink.
  • the present inventors As a result of intensive studies to solve the above-described problems, the present inventors adjusted the content of each surfactant contained in the cyan ink and black ink constituting the ink set to a specific range. As a result, the inventors have found that the above-described problems can be solved, and have completed the present invention. That is, the present invention relates to the following (1) to (7).
  • An ink set comprising at least two kinds of colored inks including cyan ink and black ink, each containing at least water, a surfactant, and a colorant,
  • S1 is 0.8% by mass ⁇ S1 ⁇ 2.5.
  • An ink jet recording method in which recording is performed by ejecting droplets of each colored ink in an ink set comprising at least two types of colored inks as described in (1) above and attaching them to a recording material in accordance with a recording signal.
  • an ink set comprising at least two kinds of colored inks including cyan ink and black ink, which gives a recorded image that hardly causes bleeding phenomenon and mottling phenomenon even when recording on a recording material having low ink absorption capability.
  • CI means “color index”.
  • % and “parts” including examples and the like are described on a mass basis unless otherwise specified.
  • colored ink when it is not necessary to distinguish between cyan ink and black ink, it is simply described as “colored ink” and includes both colored inks.
  • surfactant contained in the colored ink examples include known anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, silicone surfactants, and fluorosurfactants. These surfactants may be mentioned. Surfactants can be used alone or in combination.
  • Anionic surfactants include alkyl sulfocarboxylates, ⁇ -olefin sulfonates, polyoxyethylene alkyl ether acetates, polyoxyethylene alkyl ether sulfates, N-acyl amino acids or salts thereof, N-acyl methyl taurate salts , Alkyl sulfate polyoxyalkyl ether sulfate, alkyl sulfate polyoxyethylene alkyl ether phosphate, rosin acid soap, castor oil sulfate ester, lauryl alcohol sulfate ester, alkylphenol type phosphate ester, alkyl type phosphate ester, alkylaryl Examples include sulfonate, diethylsulfosuccinate, diethylhexylsulfosuccinate, and dioctylsulfosuccinate.
  • Examples of the cationic surfactant include 2-vinylpyridine derivatives and poly-4-vinylpyridine derivatives.
  • Amphoteric surfactants include lauryldimethylaminoacetic acid betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, polyoctylpolyaminoethylglycine, imidazoline derivatives, etc. Is mentioned.
  • Nonionic surfactants include ethers such as polyoxyethylene nonylphenyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene dodecylphenyl ether, polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene alkyl ether; Ester systems such as polyoxyethylene oleate, polyoxyethylene distearate, sorbitan laurate, sorbitan monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene monooleate, polyoxyethylene stearate; 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3,5-dimethyl Acetylene glycol (alcohol) type such as lu-1-hexyn-3-ol; trade name Surfynol 104, 105PG50, 82,
  • silicone surfactants include polyether-modified siloxane and polyether-modified polydimethylsiloxane.
  • examples thereof include BYK-345, BYK-348 (manufactured by Big Chemie, polyether-modified polydimethylsiloxane), BYK-347 (same as polyether-modified siloxane), BYK-349, represented by the following formula (1): BYK-3455; DYNOL 960, DYNOL 980 (produced by Air Products); Chemical Co., Ltd.);
  • a is an integer from 0 to 5
  • n is an integer from 3 to 30
  • m is an integer from 0 to 20.
  • Me represents a methyl group.
  • fluorosurfactant examples include a perfluoroalkyl sulfonic acid compound, a perfluoroalkyl carboxylic acid compound, a perfluoroalkyl phosphate compound, a perfluoroalkyl ethylene oxide adduct, and a perfluoroalkyl ether group in the side chain.
  • the polyoxyalkylene ether polymer compound etc. which have are mentioned.
  • Examples include Zonyl TBS, FSP, FSA, FSN-100, FSN, FSO-100, FSO, FS-300, Capstone FS-30, FS-31 manufactured by DuPont; PF-151N, PF manufactured by Omninova -154N; F-114, F-410, F-444, EXP. TF-2066, EXP. TF-2148, EXP.
  • silicone surfactants and fluorine surfactants are preferable, and silicone surfactants are more preferable in consideration of environmental load and the like.
  • the content of the surfactant contained in each of the cyan ink and the black ink is extremely important. That is, when the content of the surfactant in the total mass of the cyan ink is S1, and the content of the surfactant in the total mass of the black ink is S2, S1 is 0.8 mass% ⁇ S1 ⁇ 2.5. It is essential that S1-S2, which is a value obtained by subtracting S2 from S1, is 0.2% by mass ⁇ S1-S2 ⁇ 1.2% by mass and S2 is 0.1% by mass or more. It becomes. If either one of the values of S1 and S1-S2 is out of the above range, effects such as suppression of the bleed phenomenon and improvement of the mottling phenomenon cannot be obtained. In addition, these values shall be rounded off to the first digit by rounding off the second digit after the decimal point.
  • a pigment is preferable as the cyan colorant contained in the cyan ink.
  • Specific examples thereof include C.I. I. Pigment Blue 1, 2, 3, 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 22, 25, 60, 66, 80, etc. . Of these, phthalocyanine pigments are preferred. I. Pigment Blue 15: 3 and 15: 4 are preferable.
  • the black colorant contained in the black ink is preferably a pigment.
  • black pigments such as carbon black, metal oxide, metal hydroxide, metal sulfide, metal ferrocyanide, and metal chloride.
  • Specific examples of the carbon black for example, Raven760ULTRA, Raven780ULTRA, Raven790ULTRA, Raven1060ULTRA, Raven1080ULTRA, Raven1170, Raven1190ULTRAII, Raven1200, Raven1250, Raven1255, Raven1500, Raven2000, Raven2500ULTRA, Raven3500, Raven5000ULTRAII, Raven5250, Raven5750, Raven7000 (or, Columbia (Manufactured by Carbon); Monarch 700, Monarch 800, Monarch 880, Monarch 900, Monarch 1000, Monarch 1100, Monarc 1300, Monarch1400, Regal1330R, Regal1400R, Regal1660R, MogulL (manufactured by Cabot Corporation); ColorBlackFW1, ColorBlackFW2, ColorBlackFW18, ColorBlackFW200, ColorBlackFW285, Printex
  • colorants such as other organic pigments, inorganic pigments, extender pigments, disperse dyes and the like can be used in combination with the above colorants.
  • organic pigments include C.I. I. And violet pigments such as Pigment Violet 19, 23, 29, 37, 38, and 50.
  • inorganic pigments include metal oxides, metal hydroxides, metal sulfides, metal ferrocyanides, and metal chlorides.
  • extender pigments examples include silica, calcium carbonate, talc, clay, barium sulfate, and white carbon. These extender pigments are not used alone and are usually used in combination with inorganic pigments or organic pigments.
  • disperse dyes examples include C.I. I. Dispers Blue 3, 7, 9, 14, 16, 19, 20, 26, 27, 35, 43, 44, 54, 55, 56, 58, 60, 62, 64, 71, 72, 73, 75, 79, 81, 82, 83, 87, 91, 93, 94, 95, 96, 102, 106, 108, 112, 113, 115, 118, 120, 122, 125, 128, 130, 139, 141, 142, 143, 146, 148, 149, 153, 154, 158, 165, 167, 171, 173, 174, 176, 181, 183, 185, 186, 187, 189, 197, 198, 200, 201, 205, 207, 211, 214, 224, 225, 257, 259, 267, 268, 270, 284, 285, 287, 288, 291, 293, 295, 97,301,315,330,333, etc.;
  • a single pigment may be used as the colorant. Further, for the purpose of adjusting the hue of the recorded image, three or more kinds of organic pigments, inorganic pigments, and disperse dyes may be used in combination. Further, a surface-treated pigment (also referred to as a self-dispersing pigment) in which a dispersibility-imparting group is chemically introduced can be used on the surface of pigment particles. Furthermore, a pigment (also referred to as a microcapsule pigment or the like) in which part or all of the pigment surface is coated with an organic polymer can be used.
  • the total content of the colorant in the total mass of the colored ink is usually 1 to 30%, preferably 1 to 10%, more preferably 2 to 7%.
  • inorganic impurities such as a metal cation chloride (for example, sodium chloride) or a sulfate (for example, sodium sulfate) contained in the colored ink.
  • metal cation chloride for example, sodium chloride
  • sulfate for example, sodium sulfate
  • inorganic impurities are often contained in colorants obtained as commercial products.
  • the standard of the content of inorganic impurities is approximately 1% or less with respect to the total mass of the colorant, and the lower limit may be less than the detection limit of the analytical instrument, that is, 0%.
  • a method for obtaining a colorant having a small amount of inorganic impurities for example, a method using a reverse osmosis membrane; a dried product of a colorant or a wet cake is suspended and stirred in a mixed solvent of C1-C4 alcohol such as methanol and water, etc. And a method of drying by filtration; a method of exchanging and adsorbing inorganic impurities with an ion exchange resin; and a purification method.
  • a water-soluble organic solvent for example, a water-soluble organic solvent, a dispersant, an antiseptic / antifungal agent, a pH adjuster, a chelating reagent, an antirust agent, a water-soluble ultraviolet absorber, a water-soluble polymer compound, an antioxidant,
  • An ink preparation agent such as a water-dispersible resin can be used as necessary.
  • water-soluble organic solvent examples include, for example, methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol, tert-butanol, 1,2-hexanediol, 1,6-hexanediol, and trimethylolpropane.
  • a C1-C6 alkanol such as N, N-dimethylformamide, a carboxylic acid amide such as N, N-dimethylacetamide; a lactam such as 2-pyrrolidone, N-methyl-2-pyrrolidone, N-methylpyrrolidin-2-one; Cyclic ureas such as 1,3-dimethylimidazolidin-2-one or 1,3-dimethylhexahydropyrimido-2-one; acetone, 2-methyl-2-hydroxypentan-4-one, ethylene carbonate, etc.
  • Ketones or ketoalcohols tetrahydrofuran, dioxa Cyclic ethers such as ethylene glycol, diethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, 1,4-butylene glycol, 1,6-hexylene glycol, diethylene glycol, triethylene Mono, oligo, or polyalkylene having C2-C6 alkylene units such as glycol, tetraethylene glycol, dipropylene glycol, polyethylene glycol having a molecular weight of 400, 800, 1540 or higher, polypropylene glycol, thiodiglycol, dithiodiglycol, etc.
  • Cyclic ethers such as ethylene glycol, diethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, 1,4-butylene glycol, 1,6-hexylene glycol, diethylene glycol, triethylene Mono, oligo, or poly
  • Glycol or thioglycol such as glycerin, diglycerin, hexane-1,2,6-triol; ethylene glycol monomethyl ether, Lenglycol monoethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether (butyl carbitol), triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, ethylene glycol monoallyl ether, ethylene glycol monoisopropyl ether, diethylene glycol monomethyl ether, propylene C1-C4 alkyl ethers of polyhydric alcohols such as glycol monopropyl ether and triethylene glycol monobutyl ether; ⁇ -butyrolactone, dimethyl sulfoxide; and the like.
  • polyol (triol) such as glycerin, diglycerin, hexane-1,2,6-triol
  • ethylene glycol monomethyl ether Lenglycol monoe
  • water-soluble organic solvents may be used alone or in combination of two or more.
  • isopropanol, 1,2-hexanediol, 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,2-propylene glycol, glycerin, ethylene glycol monoallyl ether, ethylene glycol monoisopropyl ether, diethylene glycol monomethyl ether , Propylene glycol monopropyl ether and the like are preferable.
  • examples of such an organic solvent include C8-C16 (preferably C8-12) alkyl having a hydroxy group and an acyloxy group. Specific examples thereof include texanol.
  • the dispersant include styrene and derivatives thereof; vinyl naphthalene and derivatives thereof; aliphatic alcohol esters of ⁇ , ⁇ -ethylenically unsaturated carboxylic acids and the like; acrylic acid and derivatives thereof; maleic acid and derivatives thereof; Fumaric acid and its derivatives; vinyl acetate, vinyl alcohol, vinyl pyrrolidone, acrylamide and its derivatives; at least two monomers selected from the group consisting of monomers (preferably, A copolymer comprising at least one hydrophilic monomer), for example, a block copolymer, a random copolymer, a graft copolymer, or a salt thereof.
  • monomers preferably, A copolymer comprising at least one hydrophilic monomer
  • the weight average molecular weight of the dispersant is about 1000 to 30000, preferably about 1250 to 25000, more preferably about 1500 to 20000.
  • the acid value is about 80 to 300 mgKOH / g, preferably 90 to 275 mgKOH / g, more preferably about 100 to 250 mgKOH / g.
  • the dispersant can be obtained as a commercial product, and specific examples thereof include Jonkrill 61J, 67, 68, 450, 55, 555, 586, 678, 680, 682, 683, all manufactured by BASF. 690; B-36; and the like. Furthermore, a random copolymer and a block copolymer obtained by copolymerization by a living radical polymerization method can also be used as the dispersant.
  • the colored ink contains a pigment as a colorant
  • the amount of the dispersant used relative to the colorant is usually 0.1 to 1 part, preferably 0.1 to 0.6 part, more preferably 0.2 to 0.4 part, with 1 part of the colorant.
  • preservative examples include, for example, organic sulfur, organic nitrogen sulfur, organic halogen, haloaryl sulfone, iodopropargyl, haloalkylthio, nitrile, pyridine, 8-oxyquinoline, benzo Thiazole, isothiazoline, dithiol, pyridine oxide, nitropropane, organotin, phenol, quaternary ammonium salt, triazine, thiazine, anilide, adamantane, dithiocarbamate, brominated indanone , Benzyl bromacetate compounds, inorganic salt compounds and the like.
  • organic halogen compound include, for example, sodium pentachlorophenol.
  • pyridine oxide compound examples include sodium 2-pyridinethiol-1-oxide.
  • isothiazoline-based compound examples include, for example, 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, and 5-chloro-2-methyl-4-isothiazoline-3- ON, 5-chloro-2-methyl-4-isothiazolin-3-one magnesium chloride, 5-chloro-2-methyl-4-isothiazolin-3-one calcium chloride, 2-methyl-4-isothiazolin-3-one calcium Examples include chloride.
  • antiseptic / antifungal agents include anhydrous sodium acetate, sodium sorbate, sodium benzoate, trade names Proxel GXL (S) and Proxel XL-2 (S) manufactured by Arch Chemical Co., Ltd.
  • antifungal agent examples include sodium dehydroacetate, sodium benzoate, sodium pyridinethione-1-oxide, ethyl p-hydroxybenzoate, 1,2-benzisothiazolin-3-one and salts thereof. .
  • any substance can be used as long as it can control the pH within the above range without adversely affecting the prepared ink composition.
  • specific examples thereof include, for example, alkanolamines such as diethanolamine, triethanolamine and N-methyldiethanolamine; hydroxides of alkali metals such as lithium hydroxide, sodium hydroxide and potassium hydroxide; ammonium hydroxide (ammonia water) Alkaline metal carbonates such as lithium carbonate, sodium carbonate, sodium hydrogen carbonate and potassium carbonate; alkali metal salts of organic acids such as sodium silicate and potassium acetate; inorganic bases such as disodium phosphate;
  • the chelating reagent include, for example, disodium ethylenediaminetetraacetate, sodium nitrilotriacetate, sodium hydroxyethylethylenediaminetriacetate, sodium diethylenetriaminepentaacetate, sodium uracil diacetate and the like.
  • rust preventive examples include, for example, acidic sulfite, sodium thiosulfate, ammonium thioglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, dicyclohexylammonium nitrite and the like.
  • water-soluble ultraviolet absorbers include sulfonated benzophenone compounds, benzotriazole compounds, salicylic acid compounds, cinnamic acid compounds, and triazine compounds.
  • water-soluble polymer compound examples include polyethylene glycol, polyvinyl alcohol, cellulose derivatives, polyamine, polyimine and the like.
  • antioxidant for example, various organic and metal complex anti-fading agents can be used.
  • organic anti-fading agent include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, and heterocyclic rings. .
  • the water-dispersible resin has a function of fixing the colorant in the colored ink to the recording material by forming a film at room temperature.
  • the resin used for the water dispersible resin is not particularly limited, and examples thereof include urethane resins, polyester resins, acrylic resins, vinyl acetate resins, vinyl chloride resins, acrylic styrene resins, acrylic silicone resins, and the like. Can be mentioned.
  • the water-dispersible resin is used, for example, in the state of a resin emulsion dispersed in water as a continuous phase.
  • the resin emulsion include, for example, Superflex 126, 150, 170, 210, 420, 470, 820, 830, 890 (urethane resin emulsion, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.); Hydran HW-350, HW- 178, HW-163, HW-171, AP-20, AP-30, WLS-201, WLS-210 (urethane resin emulsion, manufactured by DIC); 0569, 0850Z, 2108 (styrene-butadiene resin emulsion, JSR) AE980, AE981A, AE982, AE986B, AE104 (acrylic resin emulsion, manufactured by Etec);
  • the content of the water-dispersible resin in the total mass of the colored ink is usually 0.5 to 20%, preferably 1 to 15% in terms of solid content.
  • a method for preparing the color ink for example, a dispersion in which a colorant is dispersed in water by a known method using a sand mill (also referred to as a bead mill), a roll mill, a ball mill, a paint shaker, an ultrasonic disperser, a microfluidizer, or the like. And a water-soluble organic solvent and, if necessary, an ink preparation agent and the like, and mixing each component by a known method using stirring or a homogenizer to prepare a colored ink.
  • the order of mixing each component is not particularly limited.
  • the pH of the colored ink is preferably pH 5 to 11 and more preferably pH 7 to 10 for the purpose of improving storage stability. Moreover, as the viscosity, 30 mPa * s or less is preferable and 20 mPa * s or less is more preferable.
  • the surface tension is preferably 10 to 50 mN / m, more preferably 20 to 40 mN / m.
  • Colored ink can also remove impurities by microfiltration using a membrane filter, glass filter paper, etc. as necessary.
  • a membrane filter glass filter paper, etc.
  • the pore diameter of the filter for performing microfiltration is usually 1 to 0.1 ⁇ m, preferably 0.8 to 0.1 ⁇ m.
  • the ink set comprising at least two kinds of colored inks including cyan ink and black ink can be used in various printing fields.
  • it is suitable for water-based ink for writing, water-based printing ink, information recording ink, textile printing, etc., particularly preferably used as ink for ink-jet recording, and it is preferably used in the ink-jet recording method described later.
  • the inkjet recording method is a method of recording by ejecting each colored ink droplet in the ink set according to a recording signal and attaching it to a recording material.
  • the ink nozzles used for recording are not particularly limited and can be appropriately selected according to the purpose.
  • the ink jet recording method is a method in which recording is usually performed using an ink jet printer.
  • a discharge method of the ink jet printer any known method may be used.
  • a charge control method that ejects ink using electrostatic attraction force
  • a drop-on-demand method that uses vibration pressure of a piezo element
  • an acoustic ink jet method in which ink is ejected using the radiation pressure
  • a thermal ink jet in which ink is heated to form bubbles and the generated pressure is used, that is, a bubble jet (registered trademark) method
  • a method called a photo ink which ejects a large number of inks with a low content of colorant in a small volume; the content of the colorant in the ink with substantially the same hue.
  • the colored body means a substance colored by the ink set, and preferably includes a recording material colored by an ink jet recording method using an ink jet printer.
  • the recording material is not particularly limited, but an information transmission sheet is preferable, and a non-hardly absorbable recording material is particularly preferable.
  • Specific examples thereof include coated paper, and examples include finely coated paper, art paper, coated paper, matte paper, and cast paper.
  • Coated paper is paper whose surface is coated with a paint to enhance aesthetics and smoothness.
  • the paint include a mixture of various clays such as talc, pyrophyllite, kaolin, etc., titanium oxide, magnesium carbonate, calcium carbonate and the like, starch, polyvinyl alcohol and the like.
  • the paint can be applied to the paper using a coater in the paper manufacturing process, for example.
  • coaters There are two types of coaters: an inline system in which papermaking and coating are performed in one process by being directly connected to a papermaking machine, and an off-line system in which the process is separate from papermaking.
  • the finely coated paper refers to a recording paper having a coating amount of paint of 12 g / m 2 or less.
  • Art paper refers to recording paper obtained by applying a coating of about 40 g / m 2 to high-grade recording paper (quality paper, paper with a chemical pulp usage rate of 100%).
  • Coated paper and matte paper refer to recording paper coated with a paint of about 20 to 40 g / m 2 .
  • the cast paper refers to a recording paper obtained by finishing art paper or coated paper by applying pressure to the surface with a machine called a cast drum so that the gloss and the recording effect are further enhanced.
  • the effect obtained by the present invention is very suitably exhibited when such a non-hardly absorbable recording material is used.
  • Examples of the recording material include plain paper that does not have an ink receiving layer, media used for gravure printing, offset printing, and the like; ink jet dedicated paper having an ink receiving layer, ink jet dedicated film, glossy paper, and glossy film Etc .; fiber and cloth (cellulose, nylon, wool, etc.); leather; base material for color filter;
  • plain papers and the like that do not have an ink receiving layer there are papers having low ink receptivity similar to the above-mentioned non-absorptive recording material. Even when such plain paper is used, the effects obtained by the present invention are exhibited very suitably.
  • the recording method may be used to record on the recording material.
  • the ink set can be used in combination with colored inks of various colors such as green, blue (or violet), orange and the like, if necessary, to obtain a full-color recorded image.
  • the colored inks of the respective colors are injected into the respective containers, and the containers are loaded into predetermined positions of the ink jet printer in the same manner as the containers containing the ink composition and used for ink jet recording. .
  • ink set not only inkjet dedicated paper and general-purpose plain paper, but also suppression of bleed phenomenon even when using a non-hardly absorbable recording material that is difficult to record well with a normal ink set, It is possible to obtain effects such as improvement of the mottling phenomenon and realization of a high print density in the mixed color portion.
  • a printed image having high roundness of ink dots on various recording materials, smoothness, and no loss of glossiness can be obtained.
  • it is possible to obtain a recorded image excellent in various fastness properties such as scratch resistance, water resistance, light resistance, heat resistance, oxidation gas resistance (for example, ozone gas resistance).
  • Preparation Example 1 Preparation of Dispersion 1 11.3 parts of Joncryl 68 (MW: 13000) and 6 parts of triethanolamine were dissolved in 95.2 parts of ion-exchanged water and stirred for 1 hour. To the resulting solution, C.I. I. 37.5 parts of Pigment Blue 15: 3 (manufactured by Dainichi Seika Kogyo Co., Ltd., cyanine blue A220J) was added, and dispersion treatment was performed with a sand grinder at 1500 rpm for 20 hours.
  • Dispersion 1 After 150 parts of ion-exchanged water was added dropwise to the obtained dispersion, this liquid was filtered to remove the dispersion beads, thereby obtaining a cyan dispersion having a solid content of 18.2%. The resulting dispersion is referred to as “Dispersion 1”.
  • Preparation Example 2 Preparation of Dispersion 2 C.I. I. A black dispersion having a solid content of 17.0% was obtained in the same manner as in Preparation Example 1, except that Pigment Blue 15: 3 was replaced with carbon black (Nerox 305, manufactured by Orion Engineered Carbons). The resulting dispersion is referred to as “Dispersion 2”.
  • Preparation Examples 3 to 13 Preparation of Colored Inks
  • the components described in Tables 1 and 2 below were added to the dispersions obtained in Preparation Examples 1 and 2 and mixed well with stirring. Thereafter, impurities were filtered off with a membrane filter having a pore size of 3 ⁇ m. 5 to 7 cyan inks and colored ink Nos. Six types of black inks 8-13 were obtained.
  • the numerical value of each component means the number of parts. Further, “remaining” means that the total amount of the ink composition was adjusted to 100 parts by adding pure water.
  • Reference numeral 7 denotes a comparative cyan ink.
  • Examples 1 to 4 Preparation of ink set From the cyan ink and the black ink prepared as described above, each colored ink is selected so as to satisfy both of the ranges of “S1” and “S1-S2”. Ink sets of Examples 1 to 4 were prepared. Table 3 below shows the configurations of the ink sets of Examples 1 to 4.
  • Comparative Examples 1 to 4 Preparation of Comparative Ink Set From the cyan ink and black ink prepared as described above, one or both of the ranges of “S1” and “S1-S2” are not satisfied. Each colored ink was selected as described above, and comparative ink sets of Comparative Examples 1 to 4 were prepared. The configurations of the ink sets of Comparative Examples 1 to 4 are shown in Table 3 below.
  • Preparation Example 14 Preparation of Dispersion 3
  • a block copolymer described in Synthesis Example 3 of International Publication No. 2013/115071 was prepared, and 6 parts of the resulting polymer dispersant was dissolved in 30 parts of 2-butanone. To obtain a uniform solution.
  • a solution prepared by dissolving 0.44 parts of sodium hydroxide in 41 parts of ion-exchanged water was added to this solution and stirred for 1 hour to prepare an emulsified solution. At this time, no crystals were precipitated.
  • Pigment Blue 15: 3 (manufactured by Dainichi Seika Kogyo Co., Ltd., cyanine blue A220J) was added, and dispersion was performed with a sand grinder. Dispersion was performed at 1500 rpm for 15 hours. Thereafter, 100 parts of ion-exchanged water was added dropwise and filtered to remove the dispersing beads. Then, 2-butanone and water were distilled off under reduced pressure using an evaporator to obtain a cyan dispersion having a pigment solid content of 11.6%. . The solid content in the aqueous solution was measured by dry weight method using MS-70 manufactured by A & D Corporation. The pH of this liquid was 9.3, the average particle diameter of the pigment was 106 nm, and the viscosity was 6.2 mPa ⁇ s. The resulting colored dispersion is referred to as “Dispersion 3”.
  • Preparation Example 15 Preparation of Dispersion 4 C.I.
  • a black dispersion having a solid content of 11.9% was obtained in the same manner as in Preparation Example 14 except that Pigment Blue 15: 3 was replaced with carbon black (Nerox 305, manufactured by Orion Engineered Carbons).
  • the pH of this liquid was 7.7, the average particle diameter of the pigment was 77 nm, and the viscosity was 4.6 mPa ⁇ s.
  • the resulting dispersion is referred to as “Dispersion 4”.
  • Preparation Examples 16 to 20 Preparation of Colored Inks
  • the components described in Tables 4 and 5 below were added to the dispersions obtained in Preparation Examples 14 and 15 and mixed with sufficient stirring. Thereafter, impurities were filtered off with a membrane filter having a pore size of 3 ⁇ m. 14 to 15 of two types of cyan ink and colored ink No. 14 Three types of black inks 16 to 18 were obtained.
  • the numerical value of each component means the number of parts. Further, “remaining” means that the total amount of the ink composition was adjusted to 100 parts by adding pure water.
  • Examples 5 to 7 Preparation of ink set From the cyan ink and the black ink prepared as described above, each colored ink was selected so as to satisfy both of the ranges of “S1” and “S1-S2”. Ink sets of Examples 5 to 7 were prepared. Table 6 below shows the configurations of the ink sets of Examples 5 to 7.
  • Preparation Examples 21 to 24 Preparation of Colored Inks
  • the components described in Table 7 below were added to the dispersions obtained in Preparation Examples 14 and 15, and mixed well with stirring. Thereafter, impurities were filtered off with a membrane filter having a pore size of 3 ⁇ m. Two types of cyan ink No. 19 to 20, and No. 19 Two types of black inks 21 to 22 were obtained.
  • the numerical value of each component means the number of copies. Further, “remaining” means that the total amount of the ink composition was adjusted to 100 parts by adding pure water.
  • Example 8 to 9 Preparation of ink set From the cyan ink and the black ink prepared as described above, each colored ink was selected so as to satisfy both the ranges of “S1” and “S1-S2”. Ink sets of Examples 8 to 9 were prepared. The composition of the ink sets of Examples 8 to 9 is shown in Table 8 below.
  • the ink set of the present invention is extremely useful as various recording inks, particularly as inks for ink jet recording on non-hardly absorbable recording materials, because it is excellent in suppressing bleeding phenomenon and mottling phenomenon.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Ink Jet (AREA)

Abstract

L'invention fournit un ensemble d'encres avec lequel des phénomènes de dégorgement et de tachage sont peu susceptibles de se produire y compris dans le cas d'un enregistrement sur un matériau pour enregistrement à faibles performances d'absorption d'encre, et qui est constitué d'au moins deux sortes d'encre de coloration permettant d'obtenir une image d'enregistrement de haute densité d'impression. L'ensemble d'encres de l'invention est constitué d'au moins deux sortes d'encre de coloration dont une encre cyan et une encre noire comprenant chacune de l'eau, un tensio-actif, un colorant, et un solvant organique soluble dans l'eau. Lorsque les teneurs en tensio-actif dans la quantité totale d'encre cyan et dans la quantité totale d'encre noire, sont respectivement représentées par S1 et S2, alors S1 est tel que 0,8% en masse≦S1≦2,5% en masse, S1-S2 correspondant à une valeur dans laquelle S2 est retranché de S1, est tel que 0,2% en masse ≦S1-S2≦1,2% en masse, et S2 est supérieur ou égal à 0,1% en masse.
PCT/JP2014/068597 2013-07-25 2014-07-11 Ensemble d'encres, procédé d'enregistrement par jet d'encre, et corps de coloration WO2015012132A1 (fr)

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WO2022203041A1 (fr) * 2021-03-26 2022-09-29 日本化薬株式会社 Ensemble d'encres, procédé d'impression à jet d'encre, ensemble de supports d'encres et support d'impression

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JP2005015765A (ja) * 2003-06-02 2005-01-20 Seiko Epson Corp インクセットおよびインクジェット記録方法
JP2005320531A (ja) * 2004-04-08 2005-11-17 Ricoh Co Ltd 記録用インク、並びに、インクカートリッジ、インク記録物、インクジェット記録装置及びインクジェット記録方法
JP2005336285A (ja) * 2004-05-26 2005-12-08 Ricoh Co Ltd 水性インク、並びに、インクカートリッジ、インク記録物、インクジェット記録装置及びインクジェット記録方法
JP2006316243A (ja) * 2004-09-13 2006-11-24 Ricoh Co Ltd 記録用インク、並びに、インクカートリッジ、インク記録物、インクジェット記録装置及びインクジェット記録方法
JP2007051176A (ja) * 2005-08-15 2007-03-01 Seiko Epson Corp インクセット及びこれを用いた記録方法、記録物
JP2008095089A (ja) * 2006-09-15 2008-04-24 Ricoh Co Ltd インクジェット記録用インク、インクジェット記録用インクセット、インクジェット記録用インク−メディアセット、インクカートリッジ、インクジェット記録方法、インクジェット記録装置。
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WO2022203041A1 (fr) * 2021-03-26 2022-09-29 日本化薬株式会社 Ensemble d'encres, procédé d'impression à jet d'encre, ensemble de supports d'encres et support d'impression

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