WO1999005230A1 - Composition d'encre - Google Patents
Composition d'encre Download PDFInfo
- Publication number
- WO1999005230A1 WO1999005230A1 PCT/JP1998/003352 JP9803352W WO9905230A1 WO 1999005230 A1 WO1999005230 A1 WO 1999005230A1 JP 9803352 W JP9803352 W JP 9803352W WO 9905230 A1 WO9905230 A1 WO 9905230A1
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- WIPO (PCT)
- Prior art keywords
- ink composition
- ink
- pigment
- weight
- yellow
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Classifications
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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
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
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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
- C09D11/40—Ink-sets specially adapted for multi-colour inkjet printing
-
- 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
- C09D11/54—Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
Definitions
- the present invention relates to an ink composition preferably used for an ink jet recording method and an ink set including the same.
- the ink jet recording method is a printing method in which a small droplet of an ink composition is made to fly and adhere to a recording medium such as paper to perform printing. This method has a feature that high-resolution and high-quality images can be printed at a high speed with a relatively inexpensive apparatus.
- An ink composition used for ink jet recording generally contains water as a main component, and further contains a wetting agent such as glycerin for the purpose of preventing adhesion and clogging.
- a wetting agent such as glycerin
- glycerin a wetting agent used in the ink composition for ink-jet recording.
- a large number of water-soluble agents are used because of the high saturation of the colorant, the variety of available colorants, and the solubility in water. I have.
- dyes are sometimes inferior in various properties such as light resistance and water resistance, and printed matter printed with the dye ink composition is inferior in light resistance and water resistance.
- water resistance has been improved by the recording paper dedicated to ink jets having an ink absorbing layer, it is still hard to say that Mr. Fu is sufficient.
- Pigments are superior in light resistance and water resistance as compared with dyes.
- their use as colorants in ink jet recording ink compositions has been studied for the purpose of improving light resistance and water resistance.
- the pigment is insoluble in water "" ⁇
- the pigment is mixed with a resin called a dispersant, and the like. It must be prepared as an ink composition after being stably dispersed in water.
- Japanese Patent Application Laid-Open No. 3-252524 / 67 discloses an ink composition comprising water, a styrene-maleic acid copolymer, ⁇ -force prolactam, and a pigment.
- Japanese Patent Application Laid-Open No. 7-68080 proposes an ink composition containing a water polymer, a styrene-maleic acid copolymer, and a copper phthalocyanine pigment.
- improvement of the abrasion resistance of the obtained image is a problem. That is, the dye penetrating into the recording medium is different, and the pigment stays on the surface of the recording medium. Therefore, it is necessary to improve the abrasion resistance by some means.
- the pigment When considering the use of a pigment as a colorant for an ink jet recording ink, the pigment is excellent in water resistance and water resistance as compared with a dye, but the number of available colorants is less than that of a power dye. When actually used as an ink jet recording ink, it is necessary to sufficiently examine the hue in addition to the light resistance and water resistance.
- the pigment-based ink composition may not be provided with sufficient osmotic power in relation to the pigment and other components.
- an ink jet recording method a method has recently been proposed in which a polyvalent metal salt solution is applied to a recording medium and then an ink composition containing a dye material having at least one carboxyl group is applied.
- a polyvalent metal salt solution is applied to a recording medium and then an ink composition containing a dye material having at least one carboxyl group is applied.
- an insoluble complex is formed from the polyvalent metal ion and the dye. Due to the presence of the complex, a high-quality image having water resistance and no color bleed is formed. It is said that an image can be obtained.
- a color image has been formed by ink jet recording.
- a color image is formed by three colors of a yellow ink composition, a magenta ink thread, and a cyan ink composition, and in some cases, four colors including a black ink composition.
- the ink composition used to form such a color image has good color developing properties in itself and, when combined with a plurality of ink compositions, produces a good intermediate color. Is required.
- the present inventors have recently proposed that in a color ink jet recording method, an ink composition containing a specific pigment together with a specific component realizes an image excellent in abrasion resistance and color reproducibility, and It has been found that the ink composition has an advantage as a super penetrating ink composition.
- the present invention is based on such knowledge.
- the first aspect of the present invention is to provide a cyan ink composition, a magenta ink composition, a yellow ink composition and a black ink which can realize good images, particularly good hue images, in addition to light fastness and water fastness. It is an object of the present invention to provide an ink composition, an orange ink composition, and a green ink composition.
- the cyan ink composition, the magenta ink composition, the yellow ink composition, and the black ink composition according to the first embodiment of the present invention comprise a colorant, water, a water-soluble dispersant, and a penetrant.
- An ink composition comprising at least 2 to 4% by weight of C.I. pigment pull 15: 3 as a colorant, 3 to 5% by weight of I.
- the water-soluble dispersant is a styrene- (meth) acrylic acid-based water-soluble resin.
- the sushi Emissions is one (meth) made Nde containing at a ratio of 0.1 to 1 part by weight of the pigment in the solid content in terms of water-soluble acrylic resin.
- the ink composition of the present invention an image having excellent abrasion resistance and color reproducibility can be realized.
- color printing using an ink composition is performed by controlling the amount of these inks using a yellow ink material, a magenta ink composition, a cyan ink composition, and in some cases, a black ink material. Is reproduced.
- the color and properties are influenced by the type and amount of the pigment, the pigment concentration, the components of the ink composition other than the colorant, for example, the dispersant, and the like.
- the color: ⁇ property is inferior to that of a dye-based ink composition, and improvement in practical use has been required. .
- the ink composition of the present invention the same color reproducibility as that obtained by the dye-based ink composition can be realized even though the pigment is used as the colorant. Furthermore, the ink composition according to the present invention has the advantage of a hyperosmotic ink composition. Specifically, there is an advantage that the drying time is short and a large pixel can be formed with a smaller amount of ink.
- the present inventors have set forth in the color ink jet recording method, in addition to the conventionally performed yellow ink composition, magenta ink composition, and cyan ink composition, the orange ink composition and the Z or green ink composition. It has been found that the combination with the composition can form a better color image. In addition, the present inventors have found that a combination of a color ink composition using a specific pigment realizes better color images. The present invention is based on these findings.
- the second object of the present invention is to provide a color ink set that realizes a good color image, particularly a good hue image, by an ink jet recording method.
- the ink set for ink jet recording according to the second aspect of the present invention includes three types of ink compositions, namely, a yellow ink composition, a magenta ink #Material, and a cyan ink composition, and an orange ink composition and / or Green ink consists essentially of Ito Seiki.
- FIG. 1 is a view showing an ink jet recording apparatus preferably used for carrying out the ink jet recording method according to the present invention.
- the recording head and the ink tank are independent of each other, and the ink composition
- the reaction solution is supplied to the recording head by an ink tube.
- FIG. 2 is an enlarged view of the nozzle surface of the recording head, where 1b is the nozzle surface of the reaction liquid and 1c is the nozzle surface of the ink composition.
- FIG. 3 is a diagram illustrating an ink jet recording method using the recording head of FIG.
- reference numeral 31 denotes a reaction liquid adhering area
- reference numeral 32 denotes a printing area on which an ink composition is printed after the reaction liquid has been adhering.
- FIG. 4 is a view showing another embodiment of a recording head preferably used for carrying out the ink jet recording method according to the present invention, in which all ejection nozzles are arranged in a horizontal direction.
- FIG. 5 is a view showing an ink jet recording apparatus preferably used for carrying out the ink jet recording method according to the present invention.
- a recording head and an ink tank are integrated.
- FIG. 6 is a view showing an ink jet recording apparatus preferably used for carrying out the ink jet recording method according to the present invention.
- a heater for heating a recording medium after printing is provided.
- the ink according to the first aspect of the present invention is used in a recording method using an ink composition.
- the recording method using the ink composition include an ink jet recording method, a recording method using a writing instrument such as a pen, and other various recording methods.
- the ink thread material according to the present invention is preferably used in an ink jet recording method.
- the ink composition according to the first aspect of the present invention basically includes at least a colorant, water, a water-soluble dispersant, and a penetrant.
- the cyan ink composition according to the present invention contains 2 to 4% by weight of I. Pigment Blue 15: 3 as a colorant, and the magenta ink textile contains 3 to 4 C.I. 5% by weight, Yellow Ink Inc. contains 3-5% by weight of C.I. Pigment Yellow 74 as a colorant, Black ink contains 2-5% by weight of carbon black, and orange ink composition is colored C. I. Pigment Orange 43 or C.I. Pigment Orange 36 (Preferably 2 to 5% by weight), and the green ink composition contains I. Pigment Green 7 or CI Pigment Green 36 (preferably 2 to 5%) as a colorant.
- the ink composition according to the present invention comprises 0.1 to 5% by weight of an acetylene glycol compound as a penetrant.
- an acetylene glycol compound as a penetrant.
- preferred examples of acetylene glycol include a compound represented by the following formula (I).
- the ink composition according to the present invention comprises a styrene- (meth) acrylic acid-based water-soluble resin as a water-soluble dispersant, in an amount of 0.1 to 1 part by weight, preferably 0.3, based on the solid content of the pigment. 11 part by weight.
- the styrene-acrylic copolymer must be water-soluble, and its molecular weight is between 1,000 and
- the ratio of the portion derived from the styrene monomer portion to the portion derived from (meth) acrylic acid may be determined by using an acid value as an index. Therefore, according to a preferred embodiment of the present invention, The acid value is preferably about 50 to 200, more preferably about 70 to about L50.
- the ink composition according to the present invention preferably further comprises 1 to 15% by weight of an alkyl ether derivative having 3 or more carbon atoms of a polyhydric alcohol.
- an alkyl alcohol derivative of a polyhydric alcohol include diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, propylene glycol monobutyl ether, and dipropylene daricol monobutyl ether.
- the ink composition according to the present invention preferably comprises an organic solvent.
- This organic solvent is preferably a low-boiling organic solvent.
- Preferred examples thereof include methanol, ethanol, n-propyl alcohol, is 0-propyl alcohol, n-butanol, sec-butanol, tert-butanol, iso-butanol, and the like.
- —Bu Yunol, n Penu Nor, etc.
- monohydric alcohol is preferable.
- the low-boiling organic solvent has the effect of shortening the drying time of the ink composition.
- the ink composition used in the present invention preferably further contains a high-boiling organic solvent.
- a high-boiling organic solvent include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, and propylene glycol.
- polyhydric alcohols such as trimethyl alcohol, trimethylol alcohol, ethylene glycol monoethyl ether, Alkyl ethers of polyhydric alcohols such as ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoeth
- the addition amount of the low boiling organic solvent is preferably 0.5 to 1 om *% of the ink composition, more preferably 1.5 to 6% by weight.
- the amount of the high-boiling organic solvent to be added is preferably 0.5 to 40% by weight of the ink fiber, more preferably 2 to 20%.
- the ink composition according to the present invention may include a surfactant.
- a surfactant examples include anionic surfactants
- nonionic surfactants eg, polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, polyoxy Ethylene sorbitan J3 fatty acid ester, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkylamine, polyoxyethylene alkyl amide, etc., and these can be used alone or in combination of two or more. it can.
- the ink composition according to the present invention comprises a resin emulsion
- the resin emulsion refers to an emulsion in which the continuous phase is water and which is a resin component having the following tics.
- the resin components of the dispersed phase include (meth) acrylic ⁇ water-soluble resin, vinyl acetate resin, styrene-butadiene resin, vinyl chloride resin, acryl-styrene resin, butadiene resin, styrene resin, cross-linked Examples include acrylic resin, cross-linked styrene resin, benzoguanamine resin, phenol resin, silicone resin, epoxy resin, and the like.
- the resin is preferably a polymer having both a hydrophilic part and a hydrophobic part.
- the particle size of these resins is not particularly limited as long as it forms an emulsion, but is preferably about 15 O nm or less, more preferably 5 to 10 O nm.
- resin emulsions can be obtained by dispersion polymerization of resin monomers in water, optionally with a surfactant.
- a surfactant for example, an emulsion of a (meth) acrylic acid-based water-soluble resin or a styrene- (meth) acrylic acid-based water-soluble resin is obtained by mixing (meth) acrylic acid ester or (meth) acrylic acid ester and styrene with an interface. It can be obtained by dispersion polymerization in water together with an activator.
- the mixing ratio of the resin component and the surfactant is usually preferably about 10: 1 to 5: 1. When the amount of the surfactant used is in the above range, better water resistance and permeability of the ink composition can be obtained.
- the surfactant is not particularly limited, but a preferred example is the above-mentioned surfactant power.
- the ratio of the resin and water as the dispersed phase component is suitably in the range of 60 to 400 parts by weight of water, preferably 100 to 200 parts by weight, based on 100 parts by weight of the resin.
- the cyan ink composition according to the present invention preferably contains a resin emulsion such that the resin component accounts for 0.1 to 40% by weight of the ink composition, more preferably 1 to 25% by weight. Range.
- the resin emulsion has the effect of suppressing the penetration of the coloring component and fixing it to the recording medium. Further, depending on the type of the resin emulsion, a film can be formed on the surface of the ink image on the recording medium, and the abrasion resistance of the mark can be improved.
- the ink composition preferably comprises a thermoplastic resin in the form of a resin emulsion.
- the thermoplastic resin has a softening temperature of 50 ° C. to 250 ° C., preferably 60 ° C. to 200 ° C.
- softening temperature refers to the temperature at which the thermoplastic resin has a glass transition point, melting point, and viscosity of 1011-1012 poise, pour point, and the minimum film forming temperature when in the form of a resin emulsion.
- (M F T) means the lowest temperature.
- the recording medium is heated at a temperature equal to or higher than the softening temperature of the thermoplastic resin.
- these resins form a film having strong water resistance and abrasion resistance when heated and cooled to a temperature higher than the softening or melting temperature.
- the water-insoluble thermoplastic resin include polyacrylic acid, polymethacrylic acid, polymethacrylic acid ester, polyethylacrylic acid, styrene-butene diene copolymer, polyptadiene, acrylonitrile-ptadiene copolymer.
- lipopolypropylene copolymer fluororesin, vinylidene fluoride, polyolefin resin, cellulose, styrene-acrylic acid copolymer, styrene-methacrylic acid polymer, polystyrene, styrene-acrylamide copolymer, poly Soptyl acrylate, polyacrylonitrile, polyvinyl acetate, polyvinyl acetal, polyamide, rosin resin, polyethylene, polycarbonate, vinylidene chloride resin, cellulose resin, vinyl acetate resin, ethylene-vinyl acetate copolymer, Vinyl acetate Examples include, but are not limited to, krill copolymers, vinyl chloride resins, polyurethanes, rosin esters, and the like.
- thermoplastic resin examples include polyethylene wax, montan wax, alcohol wax, synthetic oxidized wax, ⁇ -olefin-maleic anhydride copolymer, animal and plant-based resins such as carnaubax, lanolin, paraffin wax, And microcrystalline pulp.
- the ink composition according to the present invention may comprise an inorganic oxide colloid (also referred to as an inorganic oxide sol).
- an inorganic oxide colloid means a colloid solution composed of water or an organic solvent which mixes well with water, and a dispersoid composed of ultrafine particles of inorganic oxide.
- the particle diameter of the ultrafine particles of the inorganic oxide is generally about 1 to 100 nm, preferably in the range of 1 to 20 nm, and more preferably in the range of 1 to 10 nm.
- the dispersion medium of the inorganic oxide colloid is generally a mixed solvent of water or an organic solvent having good compatibility with water, such as methanol, ethanol, isopropyl alcohol, and n-propanol.
- inorganic The oxide colloid is obtained by dispersing the ultrafine particles of the inorganic oxide in water or the organic solvent.
- a dispersion in which the above-mentioned inorganic oxide ultrafine particles are dispersed in water is called an aqueous sol, and a dispersion in an organic solvent is called an organosol.
- an inorganic oxide colloid As such an inorganic oxide colloid, a commercially available one can be used. As specific examples, Snowtex S, Snowtex N, Snowtex C, Snowtex SS, Snowtex XS, Snowtex 20, Snowtex 30 in which ultra-fine particles of high molecular weight silica are dispersed in water, Snowtex 40 (from Nissan Chemical), Cata 10 id SI—3 50> Cat 1 oid SI—500, Cat 1 oid SI—30, Ca taloid S-20L Ca taloid S—20H, Ca taloid
- colloids obtained by dispersing ultrafine particles of alumina in water include alumina sol 100, alumina sol 200, and alumina sol 520 (all manufactured by Nissan Chemical Industries, Ltd.).
- 0 SCAL-1432 isopropyl alcohol sol; manufactured by Kasei Kagaku Kogyo Co., Ltd.
- the pH of the above-mentioned commercially available inorganic oxide colloid solutions is often adjusted to be acidic or alkaline.
- the stable dispersion region of the inorganic oxide colloid exists on the acidic side or the alkaline side, and when a commercially available inorganic oxide colloid solution is added to the ink, the inorganic oxide colloid is used. It is necessary to consider the pH of the stable dispersion region and the pH of the ink.
- the addition amount of the inorganic oxide colloid may be appropriately determined in consideration of the type and the aggregate thereof. For example, the amount is preferably about 0.1 to 15% by weight of the ink composition, and more preferably 0.5%. It is in the range of about 5.0% by weight. Further, a plurality of inorganic oxide colloids may be added.
- the cyan ink composition according to the present invention contains sugar.
- sugar May be.
- saccharides include monosaccharides, disaccharides, oligosaccharides (including trisaccharides and tetrasaccharides) and polysaccharides, preferably glucose, mannose, fructose, ribose, kinase, arabinose, galactose, aldone. Acids, glucosyl, sorbitol, maltose, cellobiose, lactose, sucrose, trehalose, maltotriose, and the like.
- the polysaccharide means a sugar in a broad sense, and is used to include substances widely existing in nature such as alginic acid, ⁇ -cyclodextrin, and cellulose.
- Examples of the derivatives of these saccharides include reducing sugars of the above-mentioned saccharides (for example, sugar alcohols (" ⁇ formula HOCH 2 (CHOH) n CH 2 OH (where n represents an integer of 2 to 5)) Embedded image), oxidized sugars (eg, aldonic acid, peronic acid, etc.), amino acids, thiosaccharides, etc.
- sugar alcohols for example, sugar alcohols (“ ⁇ formula HOCH 2 (CHOH) n CH 2 OH (where n represents an integer of 2 to 5)
- oxidized sugars eg, aldonic acid, peronic acid, etc.
- amino acids eg, thiosaccharides, etc.
- Particularly preferred are sugar alcohols, and specific examples include maltitol, sorbitol and the like.
- the content of these saccharides is suitably in the range of 0.1 to 40% by weight, preferably 0.5 to 30% by weight of the ink composition.
- the ink set according to the second embodiment of the present invention is basically combined with a yellow ink composition, a magenta ink composition, a cyan ink composition, an orange ink composition and a Z or green ink composition. It becomes.
- the ink set according to the present invention may optionally further include a black ink composition, and does not include an ink composition of another color.
- An ink set including a yellow ink composition, a magenta ink composition, and a cyan ink composition is generally used in a color ink jet recording method.
- the ink set in combination with the orange ink composition and the Z or Darinink composition the following advantages can be enjoyed.
- the range of color reproducibility of a color image can be expanded.
- the color reproducibility of red and green colors can be improved.
- the red and green chroma of an image obtained by the conventional “color ink jet recording method” is about 60 and 70, respectively, but according to the ink set according to the present invention, the chroma exceeding 70 Can be realized, and in a preferred embodiment, a saturation of 80 or more can be realized.
- the ink set of the present invention it is possible to obtain an advantage that a more subtle intermediate color can be expressed.
- a blank image is expressed by binary control of printing or not printing the ink. Therefore, the number of colors that can be represented is limited by the resolution.
- the present invention by adding the orange ink composition and the blue or green ink composition, the degree of freedom in expressing an intermediate color is increased, and the number of colors that can be expressed can be greatly increased.
- the ink set of the present invention it is possible to obtain a printed matter having good chroma and lightness, and particularly to obtain a printed matter having good lightness and chroma even when a pigment is used as a colorant. Can be.
- color printing when two or more ink compositions are simultaneously printed, the lightness of the printed surface tends to be low and the saturation tends to be low. This tendency is stronger in an ink composition using a pigment as a colorant than in an ink composition using a dye as a colorant.
- the orange pigment is C.I. Pigment Orange 43 or C.I. Green Pigment C. I. Pigment Green 7 or C.I. Pigment Green 36
- the yellow pigment is C.I. pigment yellow 109, 110, 74, or 138;
- the magenta pigment is I. pigment red 122, 202, or 209;
- the cyan pigment is I. Pigment Blue 15: 3
- the ink composition constituting the ink set of this embodiment satisfies the properties required for the ink composition used in the ink jet method, such as storage stability and clogging properties, at a high level.
- the ink M comprises the above colorant and an aqueous solvent capable of dissolving or dispersing the colorant.
- the pigment is preferably added to the ink composition as a pigment dispersion obtained by dispersing the pigment in an aqueous medium with a dispersant or a surfactant.
- a dispersant commonly used for preparing a pigment dispersion for example, a high molecular dispersant can be used.
- the addition amount of the pigment may be appropriately determined,
- Yellow Pigment C.I. Pigment Yellow 109, 110, 74, or 138 has about 3 to 5% by weight
- Magenta pigment C.I. Pigment Red 122, 202, or 209 is about 3 to 5% by weight
- the ink composition preferably comprises an organic solvent.
- the organic solvent is preferably a low-boiling organic solvent, and preferred examples thereof include methanol, ethanol, n-propyl alcohol, iso-propyl alcohol, n-butanol, sec-butanol, tert-butanol, iso- Butanol and n-pentanol. Particularly, a monohydric alcohol is preferable.
- the low-boiling organic solvent has the effect of shortening the drying time of the ink composition.
- the ink composition further contains a high-boiling organic solvent.
- a high-boiling organic solvent include ethylene blend glycol, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, propylene glycol, petylene glycol, 1,2,6-hexanetriol, thioglycol, and hexylene glycol.
- Polyhydric alcohols such as coal, glycerin, trimethylolethane, trimethylolpropane, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethyl alcohol
- Elene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol Alkyl ethers of polyhydric alcohols such as monobutyl ether, urea, 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3-dimethyl-12-imidazolidinone, and triethanolamine.
- the addition amount of the low boiling organic solvent is preferably 0.5 to 0% by weight of the ink composition, more preferably 1.5 to 6% by weight.
- the amount of the high-boiling organic solvent added is preferably 0.5 to 40% by weight of the ink composition, more preferably 2 to 20% by weight. Range.
- the ink composition can include a surfactant.
- surfactants include anionic surfactants (for example, sodium dodecyl benzene sulfonate, sodium laurinoleate, ammonium salt of polyoxetylene alkyl ether sulfate, etc.), nonionic surfactants (for example, Polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkylphenyl ether, polyoxyethylene alkylamine, polyoxyethylene alkylamide, etc.).
- the seed £ Lh can be mixed and used. It is also possible to use acetylene glycol (Olefin Y and Surfynol 82, 104, 44, 465, and 485 (all manufactured by Air Products and Chemicals Inc.)). .
- the ink composition preferably comprises a resin emulsion.
- the tree flum emulsion refers to an emulsion in which the continuous phase is water and the fraction is the following resin component.
- Resin components of the dispersed phase include acrylic resin, vinyl nitrate resin, styrene-butadiene resin, vinyl chloride resin, acryl-styrene resin, butadiene resin, styrene resin, cross-linked acrylic resin, cross-linked styrene resin , Benzoguanamine resin, phenol resin, silicone resin, epoxy resin, and the like.
- the resin is preferably a polymer having both a hydrophilic part and a hydrophobic part.
- the particle size of these resin components is not particularly limited as long as it forms an emulsion, but is preferably about 15 Onm or less, more preferably about 5 to 10 Onm.
- These resin emulsions can be obtained by dispersion polymerization of resin monomers in water, optionally with a surfactant.
- a surfactant for example, acrylic tree
- the emulsion of a fat or styrene-acrylic resin can be obtained by dispersing and polymerizing (meth) acrylate or (meth) acrylate and styrene in water together with a surfactant.
- the mixing ratio of the resin component and the surfactant is usually preferably about 10: 1 to 5: 1.
- the surfactant is not particularly limited, but preferred examples include the surfactants described above.
- the ratio of the resin and water as the finely divided component is suitably in the range of 60 to 400 parts by weight of water, preferably 100 to 200 parts by weight, based on 100 parts by weight of the resin.
- resin emulsions known resin emulsions can be used.
- Japanese Patent Publication No. Sho 62-142 Japanese Patent Laid-Open No. 3-56573, Japanese Patent Laid-Open No. 3-79667
- the resin emulsions described in JP-A No. 8, JP-A-3-160068, JP-A-4-18462 and the like can be used as they are.
- Microgel E-102, E-502 styrene-acrylic resin emulsion, manufactured by Nippon Paint Co., Ltd.
- Boncoat 400 1 acrylic resin emulsion, manufactured by Dainippon Ink & Chemicals, Inc.
- Boncoat 5 4 5 4 styrene-acrylic resin emulsion, manufactured by Dainippon Ink & Chemicals, Inc.
- SAE-1014 styrene-acrylic) Resin-based emulsion, Nippon Zeon Co., Ltd.
- Saipinol SK-200 acrylic resin emulsion, manufactured by Saiden Chemical Co., Ltd.
- the ink composition is preferably a resin emulsion so that the resin component is contained in an amount of 0.1 to 40% by weight of the ink composition, and more preferably in a range of 1 to 25% by weight. is there.
- Resin emulsion has the effect of suppressing penetration of coloring components and promoting fixation to a recording medium. Also, depending on the type of resin emulsion In this way, a film is formed on the surface of the ink image on the recording medium, and the abrasion resistance of the printed matter can be improved.
- the ink composition may contain a sugar.
- saccharides include monosaccharides, disaccharides, oligosaccharides (including trisaccharides and tetrasaccharides) and polysaccharides, preferably glucose, mannose, fructose, ribose, xylose, arabinose, galactose, Aldonic acid, glucosyl, sorbitol, maltose, cellobiose, lactose, sucrose, trehalose, maltotriose, and the like.
- the polysaccharide means a sugar in a broad sense, and is used to include substances widely existing in nature such as alginic acid, ⁇ -cyclodextrin, and cellulose.
- Examples of the derivatives of these saccharides include reducing sugars of the aforementioned saccharides (for example, sugar alcohols ("" ⁇ formula HOCH 2 (CHOH) nCH 2 OH (where n represents an integer of 2 to 5). ), Oxidized sugars (eg, aldonic acid, peronic acid, etc.), amino acids, thiosaccharides, etc. Particularly preferred are sugar alcohols, and specific examples include maltitol, sorbitol, etc. .
- the content of these saccharides is suitably in the range of 0.1 to 40% by weight, preferably 0.5 to 30% by weight of the ink composition.
- a pH adjuster if necessary, a preservative, a fungicide, etc. may be added.
- the ink composition according to the first embodiment of the present invention as the ink composition constituting the ink set according to the second embodiment of the present invention.
- the ink composition according to the first aspect of the present invention and the ink set according to the second aspect An ink jet recording method may form an image by an ink jet recording method.
- a better image can be formed by combining with a so-called ink jet recording method using two liquids.
- Mr. Fu shows good color development.
- the ink jet recording method according to the present invention includes a step of attaching a reaction liquid containing a reactant and the cyan ink composition or the ink composition of the ink set to a recording medium.
- the reactant is one capable of destroying the dispersion and Z or dissolved state of the pigment to cause aggregation.
- good printing performance can be realized by force contact between the reaction liquid and the ink. That is, when the reaction liquid comes into contact with the ink composition, the reactant in the reaction liquid destroys the dispersed state of the pigment and other components in the ink composition, and agglomerates it. It is considered that this aggregate adheres to the recording medium and realizes printing with high color, blur, and unevenness. Further, in a color image, there is an advantage that uneven color mixing in a boundary region of different colors, that is, color bleeding can be effectively prevented.
- the reaction liquid is brought into contact with the ink composition.
- the step of recording an image by discharging droplets of the ink composition onto the recording medium may be before or after the step of attaching the reaction liquid to the recording medium, but may be performed later. It is preferable that there is.
- the adhesion of the reaction liquid to the recording medium can be performed by the method of selectively applying the reaction liquid only to the place where the ink composition is to be applied, or the method of applying the reaction liquid to the entire surface of the paper, even in the L and shift modes.
- the former is economical because it can minimize the consumption of the reaction liquid, but requires a certain degree of precision at the position where both the reaction liquid and the ink composition are adhered.
- the position where the reaction liquid and ink Although the precision requirement is reduced, a large amount of the reaction solution adheres to the entire surface of the paper, and the paper tends to curl during drying. Therefore, which method is adopted may be determined in consideration of the combination of the ink composition and the reaction liquid.
- reaction liquid can be attached by an ink jet recording method.
- the reaction solution used in the present invention contains a reaction agent having a property of breaking the dispersion state of the colorant and the like in the above-described ink composition and aggregating the colorant component and the like.
- reaction solution used in the present invention examples include those containing a polyvalent metal salt, a polyamine, a polyamine derivative, or the like as a reactant.
- a preferable example thereof is a water-soluble salt composed of a divalent or higher polyvalent metal ion and an anion bonded to the polyvalent metal ion.
- polyvalent metal ions Ca 2+, Cu 2+, N i 2 ⁇ Mg 2+, Zn 2+, divalent metal ion A l 3+ such B a 2+, F e "+
- examples include trivalent metal ions such as Cr 3+, etc.
- anions include C, NO 3 _, I—, Br _ , C 10 3 "", and CH 3 COO—.
- a metal salt composed of Ca + or Mg + gives favorable results from the two viewpoints of the pH of the reaction solution and the quality of the obtained printed matter.
- the concentration of these polyvalent metal salts in the reaction solution may be appropriately determined within a range in which the effect of preventing printing quality and clogging can be obtained. About 25% by weight.
- the polyvalent metal salt contained in the reaction solution is composed of a divalent or higher polyvalent metal ion, and a nitrate ion or a carbonate ion bound to the polyvalent metal ion. It is soluble in water.
- the carboxylate ion is preferably derived from a saturated fatty acid having 1 to 6 carbon atoms, ⁇ 3 ⁇ 4monocarbonic acid, or a carbocyclic monocarboxylic acid having 7 to 11 carbon atoms.
- Preferred examples of the saturated aliphatic monocarboxylic acid having 1 to 6 carbon atoms include formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, pivalic acid and hexanoic acid. Particularly, formic acid and acetic acid are preferred.
- a hydrogen atom on the hydrogen hydride group may be substituted with a hydroxyl group, and a preferred example of such a carboxylic acid is lactic acid.
- preferred examples of the carbon monocarboxylic acid having 6 to 10 carbon atoms include benzoic acid and naphthoic acid, and more preferred is benzoic acid.
- the polyarylamine and the polyallylamine derivative preferably used as a reactant are cationic polymers which are soluble in water and positively i S in water.
- cationic polymers which are soluble in water and positively i S in water.
- X— represents chloride ion (represents bromide ion, iodide ion, nitrate ion, phosphate ion, sulfate ion, acetate ion, etc.)
- a polymer obtained by copolymerizing arylamine and diarylamine or a copolymer of diarylmethylammonium chloride and sulfur dioxide can also be used.
- the content of these polyallylamine and polyallylamine derivatives is preferably 0.5 to 0% by weight of the reaction solution.
- the reaction solution may contain a wetting agent comprising a high-boiling organic solvent.
- High boiling organic solvents prevent clogging of the head by preventing the reaction solution from drying.
- Preferred examples of the high-boiling organic solvent include, but partially overlap with the above-mentioned polyols, but ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, propylene glycol, petylene diol, 1,2,6-hexane Polyhydric alcohols such as triol, thioglycol, hexylene glycol, glycerin, trimethylolethane, trimethylolpropane; ethylene glycol monoethyl ether, ethylene daryl glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether , Diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monoeth
- the amount of the high-boiling organic solvent to be added is not particularly limited, but is preferably about 0.5 to 40% by weight, more preferably about 2 to 20% by weight.
- the reaction solution may contain a low-boiling organic solvent.
- the low boiling organic solvent include methanol, ethanol, n-propyl alcohol, is 0-propyl alcohol, n-butanol, sec-butanol, tert-butanol, iso-butanol, and n-pentanol. And so on. Particularly, monohydric alcohol power is preferable.
- the “low-boiling organic” has the effect of shortening the drying time of the ink composition.
- the amount of the low-boiling organic solvent added is preferably 0.5 to 10% by weight, more preferably 1.5 to 6% by weight.
- the reaction solution may contain a penetrant.
- the penetrant include various surfactants such as anionic surfactants, cationic surfactants, and amphoteric surfactants, alcohols such as methanol, ethanol, is0-propyl alcohol, ethylene glycol monomethyl ether, and diethylene glycol monomer.
- lower alkyl ethers of polyhydric alcohols such as monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, propylene glycol monobutyl ether, and dipyrene pyrylene glycol monobutyl ether.
- the ink jet recording apparatus in FIG. 1 is a mode in which ink and a reaction liquid are stored in a tank, and the ink and the reaction liquid are supplied to a recording head via an ink tube. That is, the self-recording head 1 and the ink tank 2 are communicated by the ink tube 3.
- the inside of the ink tank 2 is partitioned, and a room for ink, and in some cases, a plurality of color inks, and a room for a reaction liquid are provided.
- the recording head 1 is moved along a carriage 4 by a timing belt 6 driven by a motor 5.
- the paper 7 as a recording medium is placed at a position facing the recording head 1 by the platen 8 and the guide 9.
- a cap 10 is provided. This cap 10 is connected to a suction pump 11 A so-called cleaning operation is performed.
- the sucked ink is stored in the waste ink tank 13 via the tube 12.
- Fig. 2 shows an enlarged view of the nozzle surface of recording head 1.
- the portion indicated by 1b is the nozzle surface of the reaction liquid, and is provided in the longitudinal direction of the nozzle 21 for discharging the reaction liquid.
- the area indicated by 1c is the ink nozzle surface. From nozzles 2, 2, 23, 24, and 25, yellow ink, magenta ink, cyan ink, and black ink are provided, respectively. Discharged.
- Record head 1 moves in the direction of arrow A.
- the reaction liquid is ejected from the nozzle surface 1 b to form a band-like reaction liquid attachment region 31 on the recording medium 7.
- the recording medium 7 is transported by a predetermined amount in the paper feed direction arrow B.
- the recording head 1 moves in the direction of arrow A in the figure, and returns to the position on the left end of the recording medium 7.
- the ink is printed on the reaction liquid adhering area where the reaction liquid has already adhered to form a printing area 32.
- the recording head 1 in the recording head 1, all the nozzles can be arranged in the horizontal direction.
- reference numerals 41a and 41b denote nozzles for discharging the reaction liquid, and the yellow ink, magenta ink, cyan ink, and black ink are supplied from nozzles 42, 43, 44, and 45, respectively. Ink is ejected.
- the recording head shown in Fig. 2 was used because the recording head 1 can perform printing on both the forward path and the return path where the recording head 1 reciprocates on the carriage. Printing at a higher speed than in the case can be expected.
- the surface tension of the reaction liquid and the ink preferably as described above, high-quality printing can be obtained more irrespective of the order of their attachment.
- a single nozzle for the reaction liquid can be used (for example, the nozzle of 41b can be omitted in the figure), and a further reduction in head size and speed of printing can be achieved.
- ink is refilled by replacing a cartridge, which is an ink tank. Further, this ink tank may be integrated with the recording head.
- Figure 2 shows a preferred example of an inkjet recording device using such an ink tank.
- the same members as those of the apparatus of FIG. 1 are denoted by the same reference numerals.
- the recording heads 1a and 1b are integrated with the ink tanks 2a and 2b.
- the recording head 1a or 1b discharges ink and reaction liquid, respectively.
- the printing method may be basically the same as that of the apparatus shown in FIG.
- the self-recording head 1a and the ink tank 2a and the self-recording head 1a and the ink tank 2b move together on the carriage 4.
- FIG. 6 shows a preferred example of an ink jet recording apparatus provided with a heater for heating a printed recording medium.
- FIG. 6 is similar to that shown in FIG. 1 except that a heater 14 is provided.
- the heater 14 may be a heater for contacting and heating the self-recording medium, or a heater for irradiating infrared rays or blowing hot air without contacting the recording medium. .
- a pigment ink composition having the following composition was produced by the following operation. First, the pigment and the dispersant resin are mixed, and the beads are mixed in a sand mill (Yaskawa Seisakusho).
- Example Al (Diameter 1.7 mm, 1.5 times the weight (weight) of the mixture) for 2 hours. Thereafter, the glass beads were removed, other additives were added, and the mixture was stirred at room temperature for 20 minutes. The mixture was filtered with a 5 im membrane filter to obtain an ink composition.
- Example Al (Diameter 1.7 mm, 1.5 times the weight (weight) of the mixture) for 2 hours. Thereafter, the glass beads were removed, other additives were added, and the mixture was stirred at room temperature for 20 minutes. The mixture was filtered with a 5 im membrane filter to obtain an ink composition.
- Styrene-acrylic acid copolymer 1.5% by weight (solid content) (molecular weight 7,000, acid value 120)
- Styrene-acrylic acid copolymer 1.8% by weight (solid content) (molecular weight 7,000, acid value 150)
- Styrene-acrylic acid copolymer 2% by weight (solid content) (molecular weight 7,000, acid value 70) sucrose
- Styrene-acrylic acid copolymer 2.2% (solid content) (molecular weight 7,000, acid value 100)
- Styrene-acrylic acid copolymer 2.1% by weight (solid content) (molecular weight 7,000, acid value 90)
- Styrene-acrylic acid copolymer 1.8% by weight (solid content) (molecular weight 7,000, acid value 130)
- Styrene-acrylic acid copolymer 2% solid content (molecular weight 7,000, acid value 110)
- Styrene-acrylic acid copolymer 0.9% (solid content) (Molecular weight 10,000, acid value 150)
- Styrene-acrylic acid copolymer 1.1% by weight (solid content) (molecular weight 3,000, acid value 70)
- Styrene-acrylic acid copolymer 1.0% by weight (solid content) (molecular weight 7,000, acid value 130)
- Styrene-acrylic acid copolymer 0.6% by weight (solid content) (molecular weight 5,000, acid value 90)
- Styrene-acrylic acid copolymer 1.3% by weight (solid content) (molecular weight 7,000, acid value 130)
- Acrylic acid copolymer 1.3% by weight (solid content) (molecular weight 7,000, acid value 1,400)
- Acrylic acid copolymer 0.9% by weight (solid content) (molecular weight 7,000, acid value 1,600)
- the printed materials to be evaluated below were printed using an inkjet printer MJ-930C manufactured by Seiko Epson Corporation.
- the printing conditions were as follows: the weight of the ejected ink per dot was 0.040 g, and 360 dpi x 360 dpi.
- the solid is printed on a special recording medium for ink jet (special gloss film manufactured by Seiko Epson Corporation), the color is measured with a Macbeth CE-7000 spectrophotometer (manufactured by Macbeth), and the color difference specified by CIE is measured.
- the a * b * color system coordinates of the display method were determined.
- printing was performed using the 53 ⁇ 4iE ink composition of the ink jet printer MJ-930C. (However, for the green color, yellow ink #Essential ink and cyan ink composition were mixed at a ratio of 1: 1. Green color is realized).
- the coordinates of the i a * color system of the color difference display method defined by C I ⁇ were determined for the colors of the obtained printed matter.
- C ⁇ l represents the saturation of the image obtained with the ink composition of the above example
- C * (2) is the image obtained with the genuine ink composition of the ink jet printer MJ-930C. Represents the saturation of
- Evaluation A solid portion having a length of 50 points and a width of 200 points was printed on the same ink jet print recording medium as in Evaluation A1, and the uniformity of the solid portion was evaluated. The results were evaluated according to the following criteria.
- Evaluation Solid and character characters were printed on the same ink jet print medium as in evaluation A1.
- the obtained printed matter was rubbed with a finger in an environment of 25 ° C. and a humidity of 50%, and the printed matter was visually observed for occurrence of peeling of the stain colorant.
- the results were evaluated according to the following criteria.
- Example A 7 AAA
- Printed matter was obtained according to Evaluation A1, except that the orange ink composition and the yellow ink were combined in the following manner, and the red was realized at a mixing ratio of 1: 1.
- the reference red is the yellow ink of the ⁇ IE ink composition of MJ-930C.
- the following pigment was dispersed in the following pigment to obtain an ink set composed of a five-color ink composition.
- Orange ink C.
- Green Ink I Pigment Green 7
- Styrene-acrylic-polymer-ammonium salt 1.5% by weight Fen amount: 7000;
- the following pigment was dispersed in the following body to obtain an ink set composed of a five-color ink composition.
- Orange ink C. Pigment orange 4 3 3% by weight
- Green ink C. Pigment green 73% by weight
- Yellow ink C. Pigment yellow 1 109 3% by weight
- Styrene-acrylic acid copolymer-ammonium salt 0.5% by weight Fen amount: 7000; dispersant
- the following pigments were dispersed in the following pigment to obtain an ink set composed of a five-color ink composition.
- Styrene-acrylic acid copolymer-ammonium salt 1.5% by weight
- Fen amount 7000; dispersant
- Example B An ink set not containing the orange and green inks of 1 was prepared. Comparative Example B2
- Example B An ink set not containing the orange and green inks of 3 was prepared. Comparative Example B3
- Example B An ink set not containing the orange and green inks of 4 was prepared.
- the ink set obtained above was evaluated as follows.
- Printing was carried out on a self-recorded paper shown below using an ink jet printer MJ 700V2C.
- the orange ink composition of the ink set of Examples B1 to B4 and the yellow ink composition were mixed at a ratio of 1 : 1 to realize red.
- magenta ink composition and the yellow ink composition of the ink set of the above iEJt Comparative Examples B1 to B3 were mixed at a ratio of 1: 1 to express red.
- Saturation is 70 or more and less than 80 0 B
- Saturation is more than 60 and less than 70 0 C
- the green ink compositions of the ink sets of Examples B1 to B4 and the yellow ink composition were mixed at a ratio of 1: 1 to realize green.
- Saturation is 70 or more and less than 80 0 B
- Saturation is more than 60 and less than 70 0 C
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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)
- Chemical Kinetics & Catalysis (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP98933959A EP0933406B1 (en) | 1997-07-28 | 1998-07-28 | Ink composition |
DE1998628579 DE69828579T2 (de) | 1997-07-28 | 1998-07-28 | Tintezusammensetzung |
JP50417999A JP3829993B2 (ja) | 1997-07-28 | 1998-07-28 | インク組成物 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP9/201237 | 1997-07-28 | ||
JP20123797 | 1997-07-28 | ||
JP9/275821 | 1997-10-08 | ||
JP27582197 | 1997-10-08 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/496,936 Continuation-In-Part US6419733B1 (en) | 1997-07-28 | 2000-02-02 | Ink composition |
Publications (1)
Publication Number | Publication Date |
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WO1999005230A1 true WO1999005230A1 (fr) | 1999-02-04 |
Family
ID=26512677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1998/003352 WO1999005230A1 (fr) | 1997-07-28 | 1998-07-28 | Composition d'encre |
Country Status (5)
Country | Link |
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US (1) | US6419733B1 (ja) |
EP (1) | EP0933406B1 (ja) |
JP (1) | JP3829993B2 (ja) |
DE (1) | DE69828579T2 (ja) |
WO (1) | WO1999005230A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
EP0933406B1 (en) | 2005-01-12 |
EP0933406A4 (en) | 2000-11-08 |
US6419733B1 (en) | 2002-07-16 |
DE69828579T2 (de) | 2005-06-16 |
DE69828579D1 (de) | 2005-02-17 |
JP3829993B2 (ja) | 2006-10-04 |
EP0933406A1 (en) | 1999-08-04 |
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