WO2002102906A1 - Ink jet recording ink set - Google Patents
Ink jet recording ink set Download PDFInfo
- Publication number
- WO2002102906A1 WO2002102906A1 PCT/JP2002/006123 JP0206123W WO02102906A1 WO 2002102906 A1 WO2002102906 A1 WO 2002102906A1 JP 0206123 W JP0206123 W JP 0206123W WO 02102906 A1 WO02102906 A1 WO 02102906A1
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- WIPO (PCT)
- Prior art keywords
- ink
- jet recording
- ink set
- color
- ink jet
- Prior art date
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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
- C09D11/40—Ink-sets specially adapted for multi-colour inkjet printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
Definitions
- inkjet printers have become widespread due to their advantages of low noise and low running cost, and color printers that can print on plain paper have also been introduced to the market.
- the image quality is likely to be degraded in the red, green or blue overlapped portion.
- the drying property is improved by increasing the permeability of the ink into the paper (Japanese Patent Application Laid-Open No. 55-29564). In this case, a noticeable blur occurs in the recorded image.
- Japanese Patent Publication No. 60-23793 discloses that when an ink containing a dialkyl sulfosuccinic acid is used as a surfactant, the drying property is improved and the image quality is less deteriorated. Therefore, there is a problem that the pixel diameter is remarkably different and the image density is remarkably reduced, and there is a problem that the activator in the ink is decomposed on the alkali side and the activator effect is lost during storage.
- Japanese Patent Application Laid-Open No. 56-57862 discloses an ink containing a strongly basic substance. However, although it is effective for rosin-sized acidic paper, alkyl ketene dimer dye is effective. It has no effect on paper using succinic sulphonic acid as a sizing agent. '' Also, acid paper has no effect in the area where two colors are overlapped.
- Japanese Patent Application Laid-Open No. 1-203483 discloses polyhydric alcohol derivatives and There is disclosed a recording liquid characterized in that the recording liquid contains a solvent. This is to add pectin as a thickening agent to prevent bleeding.
- pectin is non-ionic, having a hydroxyl group as a hydrophilic group, there is a problem that it lacks ejection stability after printing is stopped.
- the above problem has been addressed by performing multi-pass printing when forming a color image and suppressing the amount of ink permeating the paper to improve the image density. In order to print, it is important to control the penetration of ink into the paper in the thickness direction of the paper in the secondary color.
- the present invention relates to an ink set used in an ink jet recording method for forming an image by superimposing at least two aqueous inks of different hues to form a color image, wherein two colors of a color image formed by high-speed printing are provided. It is an object of the present invention to provide an ink jet recording ink set that provides a clear color image with good resolution without boundary bleeding, and to provide a method, an ink cartridge, and an apparatus for performing ink jet recording using the ink set. The subject. Disclosure of the invention
- the present inventors have conducted intensive studies to solve the above problems, and as a result, completed the present invention.
- an ink set a recording method, an ink cartridge and an apparatus for performing the following ink jet recording are provided.
- an ink set used in an ink jet recording method for forming an image by superposing at least two aqueous inks A and B of different hues to form a color image one of the two aqueous inks A and B is used.
- Two inks A introduced an aionic group Characterized in that the other ink B contains a quaternary ammonium salt having an alkyl group having 6 or less carbon atoms into which at least one hydroxyl group has been introduced, together with the color material B. Recording ink set.
- the ink A is a black ink containing a self-dispersible pigment composed of carbon having an anionic group
- the ink B is a color ink selected from yellow ink, cyan ink and magenta ink.
- R 2 , R 3 and scale 4 are an alkyl group having 6 or less carbon atoms, a halogenated alkyl group having 6 or less carbon atoms or a hydroxyalkyl group having 6 or less carbon atoms, Ri to R 4 At least one is a hydroxyalkyl group, and X represents a counter ion)
- the quaternary ammonium salt is a quaternary ammonium salt represented by the following general formula (II), (III) or (IV): The ink set for inkjet recording described in (2). .
- the ink A is a color ink selected from yellow ink, magenta ink and cyan ink, and the coloring material A contained in the ink A is a self-dispersion type organic pigment having an anionic group introduced on its surface.
- the color material B contained in the ink B is a water-insoluble color material, and the ink B contains a surfactant-based dispersant.
- inks A and / or B are glycerin, ethylene glycol, ethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,3-butanediol, 2,3-butanediol 1,4-butanediol, 1,5-pentanediol, tetraethylene glycol, 1,6-hexanediol, 2-methyl-2,4-pentandiol, polyethylene glycol, 1,2,4-butantrione , 1, 2, 6 - hexane tri O over Honoré, Chio jig Ricoh Honoré, 2-pyrrolidone, N- Mechinore 2_ pyrrolidone, N- human Dorokishechiru 2 _ pyrrolidone ⁇ Pi 1, 3-dimethyl-one 2 _ imidazo It must contain at least one water-soluble organic solvent selected from lydinones.
- the ink set for ink
- the inks A and Z or B are an acetylene glycol-based surfactant, a polyoxyethylene alkyl ether-based surfactant, a polyoxyethylene alkylphenol ether-based surfactant and a fluorine-based surfactant
- the ink A and / or B is a mixture of an acetylene glycol-based surfactant having 6 or more carbon atoms in the main chain and a polyoxyethylene phenol ether having a polyoxyethylene having a polymerization degree of 5 to 12. (1) to (1)
- An ink jet recording method in which at least two aqueous inks A and B are superimposed on a recording material using an ink set including aqueous inks A and B of at least two different hues to form a color image, and a C image is formed.
- the ink set according to any one of (1) to (13) is used as the ink set.
- the ink set is used as the ink set.
- FIG. 1 is a sectional view showing an example of a recording head.
- FIG. 2 is a perspective view showing an example of the ink jet recording apparatus.
- FIG. 3 is a sectional view showing an example of the ink cartridge.
- FIG. 4 is a perspective view showing another example of the ink cartridge.
- FIG. 5 is a sectional view showing an example of a recording head.
- FIG. 6 is a plan view of the ink jet. BEST MODE FOR CARRYING OUT THE INVENTION
- an ink set refers to a combination of at least two inks of different hues.
- each ink is contained in an ink cartridge.
- Specific examples of the ink set include a combination of black ink and at least one color ink selected from yellow ink, magenta ink, and cyan ink.
- the total number of inks can be two, three, four, or more.
- the ink set for ink jet recording of the present invention (hereinafter, also simply referred to as an ink set)
- at least two inks A are formed on a recording material such as paper.
- the ink of each hue contains a coloring material corresponding to the color.
- the ink set includes at least two inks A and B, and the ink A contains the coloring material A, and the ink B contains the coloring material B.
- each of the inks A, B, and C contains color materials 8, B, and C, respectively.
- each ink set or the four-color inks A, B, C, and D each ink.
- A, B, C, and D contains the colorant, B, C, and D, respectively.
- one of the two inks A and B is included in the ink A.
- the coloring material A has an anionic group
- the other ink B has an alkyl group having 6 or less carbon atoms into which at least one hydroxyl group has been introduced. It is characterized by containing quaternary ammonium salt.
- the two types of inks A and B used in the present invention have an affinity for each other, and when these inks and B are uniformly mixed and held at a temperature of 25 ° C. for 60 minutes, the two inks have the same color.
- Materials A and B cause agglomeration.
- the coagulation of this color material, B causes the sediment by centrifugation. It can be confirmed by the presence or absence and the quantitative determination of the supernatant with a spectrum.
- the above-mentioned characteristics observed in at least two inks A and B in the ink set of the present invention when a color image is formed by printing inks A and B in an overlapping manner, or by printing inks A and B adjacently. When a color image is formed, bleeding of the color boundary of the ink in the image is suppressed, and strike-through in the secondary color is reduced, so that a clear image with high resolution can be obtained.
- the coloring material A in the ink A used in the present invention has an anionic group.
- the Anion group a carboxylic acid group (COOH), a sulfonic acid group (S 0 3 H), phosphoric acid group (H 2 P 0 4), a phosphonic acid group (P 0 3 H 2), phenylalanine sulfonic acid C 6 H 4 —S 0 3 H, phenylcarboxylic acid group C 6 H 4 COOH and the like are included.
- Preferred anionic groups are a carboxylic acid group and a sulfonic acid group. These anionic groups can be of the free acid form or of the neutralized salt form. In the case of the neutralized salt type, the neutralized salt is preferably a hydrogen-soluble neutralized salt (sodium salt, potassium salt, etc.).
- Colorant A can be an organic dye or a water-insoluble organic face.
- the ink B used in the present invention contains a quaternary ammonium salt having at least one hydroxyl group (OH) and having an alkyl group of 6 or less, preferably 1 to 3, and more preferably 1 to 2 carbon atoms.
- the coloring material B contained in the ink B can be a water-soluble dye, a water-insoluble pigment, or fine particles colored with a dye or a pigment.
- the quaternary ammonium salt used in the present invention can be represented by the following general formula (I).
- R 2 , R 3 and R 4 are an alkyl group having 6 or less carbon atoms, a halogenated alkyl group having 6 or less carbon atoms or a hydroxyalkyl group having 6 or less carbon atoms, At least one of R 1 to R 4 is a hydroxyalkyl group.
- X is a counter ion, which includes a halide ion, a sulfate ion, a nitrate ion, a phosphate ion, a thiocyanate ion, an organic acid ion and the like.
- the number of carbon atoms of the alkyl group constituting the same is 1 to 6, preferably 1 to 3, and more preferably :! ⁇ 2.
- More preferred quaternary ammonium salts used in the present invention are those represented by the following general formulas (II) to (IV).
- X- represents a counter ion.
- the counterions X— preferred are a nitrate ion and an organic acid ion.
- the organic acid ions include those derived from fatty acids having 1 to 6 carbon atoms, preferably 2 to 3 carbon atoms, and oxyacids having 2 to 6 carbon atoms. From the viewpoint of safety and the like, acetic acid, lactic acid and the like are preferably used.
- the proportion of the quaternary ammonium salt contained therein is usually 0.1 to 10% by weight, preferably 0.5 to 5% by weight, depending on the type of the coloring material B. is there.
- the ratio of the coloring material contained in the ink is usually 0. It is in the range of 1 to 20% by weight, preferably 0.2 to 8% by weight. If the s is less than 0.1%, there is no coloring power even when used for a light-colored ink, whereas if it exceeds 20%, the viscosity becomes high, and it becomes difficult to discharge from a nozzle.
- the coloring material contained therein can be a water-soluble coloring material and / or a water-insoluble coloring material.
- a water-soluble coloring material a water-soluble dye is used. This water-soluble dye can be used by being mixed with another coloring material as needed.
- the water-insoluble coloring material includes inorganic pigments, organic pigments, and fine particles whose surface is colored with a dye or pigment.
- the average particle size of these coloring materials is 10 to 300 nm, preferably 60 to 120 nm.
- the fine particles include polymer oxide fine particles and metal oxide fine particles such as silica fine particles and alumina fine particles.
- the fixability on plain paper and the coloring property can be further improved.
- polymer fine particles For the purpose of imparting gloss, it is preferable to use polymer fine particles.
- acryl-based / polyester-based fine particles impregnated with a dye / pigment that is, colored polymer fine particles having the dye / pigment present on the surface layer, inside, or entirely. More specifically, colored fine particles produced by the method disclosed in Japanese Patent Application Laid-Open No. 2000-53898 can be mentioned.
- the coloring material A and / or B contained therein can be a water-soluble dye having an ion group.
- dyes include acid dyes, basic dyes, reactive dyes, and food dyes.
- the coloring material A contained therein can be a pigment having an anionic group.
- preferred pigments include azo-based, phthalocyanine-based, anthraquinone-based, dioxazine-based, isodigo-based, thioindigo-based, rylene-based, isoindolenone-based, a-line black-based, azomethine-based and rhodamine B lakes.
- carbon black pigments are included.
- the coloring material B contained therein can be a water-soluble dye.
- the water-soluble dyes include those having no anionic group and those having a dianionic group, and conventionally known various dyes can be used.
- Water-soluble dyes that can be used as coloring material B are classified into acid dyes, direct dyes, basic dyes, reactive dyes, and food dyes in the color index.
- the dyes have excellent water and light resistance. Are preferably used. Specific examples of these dyes include the following.
- acid dyes and direct dyes can be preferably used.
- Projet (TM) series dyes such as Projetian 2, Projet Magenta 2, and Projet Yellow 2 manufactured by Avicia and developed as ink jet recording dyes are also preferably used.
- a dye having an anionic group can be used as the coloring material B.
- examples of the specific examples include those described above.
- pigment that can be used as the coloring material B include the following.
- Carpump racks such as furnace black, lamp black, acetylene black, and Canneno Black, copper oxides, iron oxides (C.I. Pigment Black 11), Metals such as titanium oxide, and aniline black (C.I. Pigment Black 1).
- C.I. Pigment Yellow 1 (Fast Yellow G), 3, 12 (Disazo Yellow AAA), 13, 14, 17, 23, 24, 34, 35, 37, 42 (Yellow Iron Oxide), 53 , 55, 74, 8 1, 83 (Jisazoyero HR), 95, 97, 98, 100, 101, 104, 108, 109, 110, 1 17, 120, 1 28, 1 38 , 150, 1 53 etc.
- the following pigments can be used alone or as a mixture of red, green and blue angles as intermediate colors.
- the carbon black is a carbon black produced by the furnace method or the channel method, with a primary particle of 15 to 40 nm, a specific surface area of 50 to 300 mg by the BET adsorption method, and a DBP oil absorption of 40 to 150 ml / 100. g, those having a volatile content of 0.5 to 10% are preferably used.
- the pigment can be used in the form of an encapsulated pigment, a pigment grafted with a polymer, or the like in order to enhance the dispersibility in water.
- the pigment containing an anionic group used in the present invention can be obtained by subjecting carbon black or an organic pigment having no anionic group to an anionic group-introducing treatment.
- an anionic group-introducing treatment various conventionally known methods can be used. For example, a method for introducing a carboxylic acid group And a method of reacting an organic carboxylic acid having a halogen group (such as chlorine or bromine) (such as monochloroacetic acid), or a method of oxidizing with nitric acid or hypochlorous acid.
- a method for introducing a sulfonate group there is a method of reacting with a sulfonating agent such as sulfuric acid, fuming sulfuric acid, and chlorosulfonic acid.
- a method of introducing a phosphate group there is a method of reacting phosphoric acid. Further, there is a method of reacting a diazonium compound to introduce a carboxylic acid group and a sulfonic acid group.
- Preferred carbon blacks having an anionic group used in the present invention include carbon black having a carboxylic acid group treated with hypochlorous acid, carbon black having a sulfonic acid group treated with a sulfonating agent, and treatment with a diazo-pharmaceutical compound.
- its free acid form has a pH of 2 to 6, preferably 4 to 6.
- the pH referred to for the coloring material means the pH of the water when 1 g of the coloring material is poured into 100 g of water and kept at a temperature of 25 ° C for 60 minutes. I do.
- the yellow pigment is preferably a CI pigment yellow 74, 128, or 138 that does not contain a benzidine skeleton.
- Preferred as magenta pigments are quinacridone-based C.I. pigment reds 122 and 209.
- C.I.Pigment Blue 15: 3 which is a phthalocyanine compound, aluminum-coordinated phthalocyanine, and metal-free phthalocyanine are preferable.
- the pH is 2 to 6, preferably 4 to 6.
- the pigment having an anionic group used in the present invention has excellent dispersion stability and can be uniformly dispersed in water without using a dispersant such as a surfactant, and can be used as a so-called self-dispersion pigment. .
- the pigment used in the present invention has an average particle size of 10 to 300 nm, preferably 40 to 120 nm, more preferably 60 to: L10 nm.
- Each ink used in the present invention can be obtained by permanently dissolving or dispersing a coloring material.
- the ink (colorant dispersion) containing the water-insoluble colorant used in the present invention can be obtained by dispersing the colorant in water.
- This ink preferably contains a dispersant for uniformly dispersing the water-insoluble colorant in water.
- a dispersant a polymer dispersant or a surfactant dispersant is used.
- a hydrophilic polymer is used as the polymer dispersant.
- examples of such substances include, in the natural system, plant macromolecules such as gum arabic, tragan gum, guar gum, calayagam, locust bean gum, arabinogalactone, pectin, quince seed starch, and seaweeds such as alginic acid, carrageenan, and agar.
- Animal polymers such as polymer, gelatin, casein, albumin, and collagen; microbial polymers such as xanthene gum and dextran; and semi-synthetic systems, methylcellulose, etinoresenorelose, hydroxyxetinoresenorelose, and hydroxy Cellulosic polymers such as propinoresenorelose and carboxymethylcellulose; starch polymers such as sodium starch glycolate and starch phosphate sodium; sodium alginate; propylene alginate For seaweed-based polymers such as recholesters, and pure synthetic systems, for example, polybutyl alcohols, polybutylpyrrolidone, and polyvinyl alcohols, and other non-crosslinked polyacrylamides, polyacrylic acids, and the like.
- Metal salts such as water-soluble styrene-ataryl resin, water-soluble styrene-maleic acid resin, water-soluble vinyl-naphthalene-acrylic resin, water-soluble butyl-naphthalene-maleic-acid resin, polyvinylpyrrolidone, polybutyl alcohol, ⁇ _naphthalene
- acryl-based resins such as water-soluble styrene-ataryl resin, water-soluble styrene-maleic acid resin, water-soluble vinyl-naphthalene-acrylic resin, water-soluble butyl-naphthalene-maleic-acid resin, polyvinylpyrrolidone, polybutyl alcohol, ⁇ _naphthalene
- acryl-based resins such as water-soluble styrene-ataryl resin, water-soluble styrene-maleic acid resin, water-soluble vinyl-naphthalene-acrylic resin, water-soluble butyl
- those into which a carboxylic acid group such as a homopolymer of acrylic acid, methacrylic acid, or styrene acrylic acid or a copolymer of another monomer having a hydrophilic group is introduced are preferable as the polymer dispersant.
- an anionic surfactant such as polyoxyethylene alkyl ether phosphate and polyoxyethylene alkyl ether acetate, and a nonionic surfactant such as nonylphenyl ether are used.
- the proportion of the polymeric dispersant contained in the ink is 0.5 to 10% by weight, preferably 1 to 5% by weight.
- the proportion of the surfactant-based dispersant contained in the ink is 0.1 to: 0% by weight of L, preferably 0.5 to 5% by weight.
- the ink A in which the water-insoluble colorant A used in the present invention is dispersed it is preferable to use a polymer dispersant as the dispersant.
- a surfactant dispersant it is preferable to use a surfactant dispersant as the dispersant.
- Each of the inks used in the present invention may contain a surfactant in order to improve permeability into a recording material such as paper.
- the surfactants include polyoxyethylene alkyl ether acetate, dialkyl sulfosuccinate, polyoxyethylene olenoquinoleate, polyoxyethylene olenoquine phenyleneoleate, and polyoxyethylene polyoxylate. Examples include propylene block copolymers and acetylene glycol-based surfactants.
- the anionic surfactant includes a polyoxyethylene alkyl ether acetate (a) represented by the following general formula (a) and / or a carbon chain represented by the following general formula (b): Examples thereof include dialkyl sulfosuccinic acid (b) having 5 to 7 branched alkyl chains.
- R may be a branched alkyl group having 6 to 14 carbon atoms
- Salt-forming cations such as alkali metal ions, quaternary ammonium, quaternary phosphonium, and alkanolamine
- R 5 and R 6 branched alkyl groups having 5 to 7 carbon atoms
- M Alkali metal ion, quaternary ammonium, quaternary phosphonium, salt-forming cation such as alkanolamine
- Preferable nonionic surfactants include a polyoxyethylene alkylphenyl ether (c) represented by the following general formula (c), and an acetylene glycol surfactant represented by the following general formula (d) ( d). By using these in combination, a surfactant having more excellent permeability can be obtained.
- R an alkyl group having 6 to 14 carbon atoms which may be branched
- each ink used in the present invention uses water as a liquid medium, in order to impart desired physical properties to the ink, to prevent drying of the ink, and to improve the dissolution stability of the water-soluble component.
- a water-soluble organic solvent can be used for the purpose of improvement or the like. Specific examples are shown below.
- diethylene glycol particularly preferred are diethylene glycol, thiojetanole, polyethylene glycolone 200-600, triethylene glycol, glycerone 1 / re, 1,2,6-hexanetrione, 1,2 1,4-butanediol, 1,4-butanediol, 1,4-butanediol, 1,5-butanediol, 1,4-butanediol, 1,5-butanediol, 1,4-butanediol, 1,4-butanediol, ⁇ —methyl-2-pyrrolidone, ⁇ —Hydroki Shetylpyrrolidone, 2-pyrrolidone, 1,3-dimethylimidazolidinone.
- the use of these compounds has an excellent effect on the high level of the compound, the solubility, and the prevention of poor jetting characteristics due to water evaporation.
- a preferable solvent for obtaining the dispersion stability of the coloring material is a pyrrolidone derivative such as N-hydroxyxethyl 2-pyrrolidone.
- the penetrant added for the purpose of adjusting the surface tension other than the surfactants (a) to (d), diethylene glycol monophenyl ether, ethylene glycol monophenyl monoenoate ether, ethylene glycol monophenyl ether, etc.
- polyhydric phenols such as feninoleatenole, 2-ethyl-1,3-hexanediol, 2,2,4-trimethyl-11,3-pentane
- diethylene glycol monobutyl ether as a polyhydric alcohol alkyl ether and carbon atoms of 6
- diols are 2-ethyl-1,3-hexanediol and 2,2,4-trimethyl-1,3-pentanediol.
- Diols are preferred because they do not easily cause aggregation of the water-insoluble coloring material.
- the amount of addition depends on the kind and desired physical properties, but is added in the range of 0.1% by weight to 20% by weight, preferably 0.5% by weight to 10% by weight. If it is less than the lower limit, the permeability is insufficient, and if it is more than the upper limit, the particle formation characteristics are adversely affected. In addition, the addition thereof improves the wettability of the ink jet head member and the recording device, improves the filling property, and makes it difficult for recording defects due to bubbles to occur.
- the physical properties such as the surface tension of the ink in the present invention can be appropriately adjusted by the system.
- the surface tension of the ink is an index indicating the permeability to paper, and in particular, measuring the dynamic surface tension in a short time of 1 second or less after forming the surface corresponds to the permeability of the ink. I do.
- any method can be used as long as it can measure a dynamic surface tension of 1 second or less by a conventionally known method described in Japanese Patent Application Laid-Open No. 63-31232 / 72. They can also be used.
- the value of the surface tension is preferably 5 OmN / m or less, and more preferably 4 OmN / m or less, whereby excellent drying properties can be obtained.
- the dynamic surface tension at which stable ejection can be performed is preferably 40 mN / m or more in 1 msec.
- the range of the viscosity of the ink is appropriately selected from ImPas to lOmPas according to the ejection method.
- the pigment particles in the ink preferably have a particle size range of 10 nm to 300 nm, and the average particle size is preferably in the range of 6 Onm to 120 nm.
- the solid content in the ink is 1 to 25% by weight, and the water content is in the range of 25 to 93% by weight, more preferably 50 to 80% by weight.
- the conductivity of each ink is in the range of lmSZcm to 6 mS / cm, which is a conductivity range which does not impair the dispersion stability, from the relation of the zeta potential ( ⁇ potential) on the particle surface of the pigment ink or the colored fine particle ink.
- a conductivity adjuster or the like is usually added, but the quaternary ammonium salt contained in Ink B also has a dissociating group, and by adjusting this content, the conductivity is adjusted. The degree can be adjusted to a desired range.
- a conductivity adjuster that does not hinder the dispersion of the coloring material can be added.
- Preferred conductivity adjusters include quaternary ammonium salts such as tetramethylammonium chloride, alkanolamine salts and the like.
- auxiliary additives can be added to the ink used in the present invention.
- sodium dehydroacetate, sodium sorbate, sodium 2-pyridinethiol-11-oxide, sodium benzoate, pentachlorophenol sodium, isotizazoline and the like can be used as a preservative / antifungal agent.
- H adjustor Any substance can be used as the H adjustor, as long as it can adjust the pH to a desired range or more without adversely affecting the ink to be prepared.
- examples include amines such as diethanolamine and triethanolamine, and hydroxyl.
- Hydroxides of alkali metal elements such as lithium hydroxide and sodium hydroxide, ammonium hydroxide, quaternary ammonium hydroxide, quaternary phosphonium hydroxide, lithium carbonate, sodium carbonate, potassium carbonate, etc.
- chelating reagents include sodium carbonates belonging to the genus Alkali, such as sodium ethylenediaminetetraacetate, sodium utrilotriacetate, sodium hydroxyxetylethylenediaminetriacetate, sodium ethylenediaminepentaacetate, and sodium peramyldiacetate. Etc.
- Examples of the protective agent include acid sulfite, sodium thiosulfate, ammonium thiodiglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, and dicyclohexylammonium ethrite.
- a water-soluble ultraviolet absorber a water-soluble infrared absorber, etc. can be added according to the purpose.
- the ink set used in the present invention includes at least the inks A and B described above. If the ink set consists of two inks, one is ink A and the other is ink B. When the ink set consists of three inks, one of them is ink A, the other one is ink B, and the other one is ink containing a colorant having an anionic group similar to ink A. Or an ink containing the same quaternary ammonium salt as ink B, and may be a different ink from inks A and B.
- the ink set consists of four inks, one is ink A, the other is ink B, and the other two inks, one of which is an anion similar to ink A
- Another ink may be an ink containing a coloring material having a functional group, and the other ink may include a quaternary ammonium salt similar to that of the ink B.
- both of the other two inks can be inks containing an anionic group, like ink A, and conversely, inks containing quaternary ammonium salts, like ink B. be able to. Further, it is a different kind of ink from inks A and B.
- the ink A is preferably a black ink containing a self-dispersion type color material A made of carbon having an anionic group.
- a self-dispersing coloring material A comprising an organic pigment having an anionic group is used as a coloring agent. Is preferable.
- the coloring material B is preferably fine particles colored with a dye or a pigment.
- the ink set of the present invention is used as an ink set in an ink jet recording apparatus generally used conventionally.
- the ink in the ink set is caused to fly as fine droplets from a print nozzle by thermal energy, mechanical energy, or the like, and adhere to a recording material to form a color image.
- the recording medium it is preferable to use a recording medium having a degree of shot size of 3 seconds or more, and preferably 10 seconds or more, according to the JIS ISP-8122 test method. Note that the upper limit of the degree of text size is usually about 100 seconds.
- the physical properties of the ink used in the present invention can be controlled by adjusting its pH.
- the storage stability of the ink can be obtained by setting the pH to 6 or more.
- many copy papers and sticky notes used in offices have a pH of 5 to 6, and these recording papers are supplied with ink having a pH of 6 or more and a fine discharge port of 9 to 60 ⁇ .
- (Nozzle) Sprays droplets with a weight of 2 ng to 50 ng at 5 to 2 O m / s and a single color adhesion of 1.5 g / m 2 to 30 g / m 2 .
- JISP-8 1 2 2 Test method By recording on so-called plain paper having a human size of 3 seconds or more, it is possible to provide a recording method for forming a high-resolution, high-resolution recording image.
- the pH is 9 or more, during the storage, the activator of the above (b) is likely to cause a change in physical properties due to decomposition. Therefore, when the activator (b) is used, the pH is preferably 6 to 9.
- FIG. 1 shows an example of a head configuration which is a main part of an ink jet recording apparatus using thermal energy.
- FIG. 1 is a cross-sectional view of the head 13 along the ink flow path.
- the head 13 has a heat generation element such as a glass, ceramic, silicon, or plastic plate having a flow path (nozzle) 14 through which ink passes. Obtained by bonding substrate 15.
- the heat generating element substrate 15 is made of a protective layer 16 made of silicon oxide, silicon nitride, silicon carbide, etc., and an electrode 17 made of aluminum, gold, aluminum-alloy, etc.
- the layer 19 is composed of a substrate 20 made of a material having good heat dissipation properties such as silicon, aluminum, and aluminum nitride.
- FIG. 2 shows an example of an ink jet recording apparatus incorporating this head.
- reference numeral 61 denotes a blade as a wiping member, one end of which is held and fixed by a blade holding member, and forms a cantilever.
- the blade 61 is arranged at a position adjacent to the recording area of the recording head 65, and in this example, is held in a form protruding into the movement path of the recording head 65.
- Reference numeral 6 2 denotes a cap on the exit surface of the recording head 65, which is disposed at a home position adjacent to the blade 61, moves in a direction perpendicular to the moving direction of the recording head 65, and ejects ink. Equipped with a configuration that abuts the exit surface and performs caving.
- reference numeral 63 denotes an ink absorber provided adjacent to the blade 61 and, like the blade 61, held in a form protruding into the movement path of the recording head 65.
- the blade 61, the cap 62, and the ink absorber 63 constitute an ejection recovery part 64, and the blade 61 and the ink absorber 63 remove moisture, dust, and the like from the ejection port surface.
- Reference numeral 65 denotes a recording head which has a discharge energy generating means, and discharges ink to a recording material facing the discharge port surface where discharge ports are arranged to perform recording
- 66 denotes a recording head 65.
- This carriage is used to move the recording head 65 on board.
- the carriage 66 is slidably engaged with the guide shaft 67, and a part of the carriage 66 is connected to a belt 69 driven by a motor 68 (not shown).
- Reference numeral 51 denotes a paper feeding unit for inserting a recording material
- 52 denotes a paper feed roller driven by a motor (not shown).
- the recording material is fed to a position facing the 65 ejection port surface of the recording head, and is discharged to a discharge section provided with discharge rollers 53 as the recording proceeds.
- the cap 62 of the ejection recovery part 64 is retracted from the moving path of the recording head 65, but the blade 6 1 protrudes into the movement route. As a result, the ejection openings of the recording head 65 are wiped.
- the cap 62 comes into contact with the ejection surface of the recording head 65 to carry out cabbing, the cap 62 moves so as to protrude into the movement path of the recording head.
- the recording head 65 moves from the home position to the recording start position, the cap 62 and the blade 61 are at the same position as the position for wiping described above.
- the ejection port surface of the recording head 65 is also wiped during this movement.
- the above-described movement of the recording head to the home position is performed not only at the end of recording or at the time of ejection recovery, but also at a predetermined interval while the recording head moves through the recording area for recording.
- reference numeral 40 denotes an ink storage unit storing the supply ink, for example, an ink bag, and a rubber stopper 42 is provided at the end thereof. By inserting a needle (not shown) into the stopper 42, the ink in the ink bag 40 can be supplied to the head.
- Reference numeral 4 denotes an ink absorber for receiving waste ink.
- the ink container it is preferable that the liquid contact surface with the ink is formed of polyolefin, particularly polyethylene.
- the ink jet recording apparatus used in the present invention is not limited to the one in which the head and the ink cartridge are separated as described above, but is also suitable for the one in which they are integrated as shown in FIG. Used for In FIG. 4, reference numeral 70 denotes a recording unit, in which an ink storage section containing ink, for example, an ink absorber is stored, and the ink in the ink absorber has a head having a plurality of orifices. It is configured to be ejected as droplets from the unit 71.
- As a material for the ink absorber It is preferable for the present invention to use a polyurethane, cellulose, polybutyl acetate or polyolefin resin.
- the ink storage unit is an ink bag in which a panel or the like is charged inside without using the ink absorber.
- 72 is an air communication port for communicating the inside of the cartridge with the atmosphere.
- This recording cut 70 is used in place of the recording head 65 shown in FIG. 2, and is detachable from the carriage 66.
- FIG. 5 shows an example of a configuration of a recording head which is a main part of the recording apparatus.
- the head includes an ink flow path 80 communicating with an ink chamber (not shown), an orifice plate 81 for discharging ink droplets of a desired volume, and a vibrating plate 82 for directly applying pressure to the ink. It comprises a piezoelectric element 83 joined to the diaphragm 82 and displaced by an electric signal, and a substrate 84 for supporting and fixing the orifice plate 81, the diaphragm 82 and the like.
- the ink flow path 80 is formed of a photosensitive resin or the like, and the orifice plate 81 is formed with a discharge port 85 by punching a metal such as stainless steel or nickel by electro-pressing. On the surface, an ink repellent layer such as eutectoid plating of PTFE nickel is provided.
- the vibrating plate 82 is formed of a metal film such as stainless steel, Eckel, and titanium, and a highly elastic resin film.
- the piezoelectric element 83 is formed of a dielectric material such as parium titanate and PZT.
- FIG. 6 is a sectional view of the ink jet head. As shown in these figures, the ink-jet head
- the central silicon substrate 2 has a plurality of independent ink chambers 5, a common ink chamber 6 provided in common therewith, and an ink supply path connecting the common ink chamber 6 to the plurality of ink chambers 5. Grooves each functioning as 7 are formed by etching from the surface (upper surface in the figure). These grooves are closed by the nozzle plate 3 to define the respective portions 5, 6, and 7.
- ink nozzles 11 are formed at positions corresponding to the front end portions of the respective ink chambers 5, and these are communicated with the respective ink chambers 5. Further, the nozzle plate 3 has an ink supply port communicating with the common ink chamber 6. Ink is supplied from an external ink tank (not shown) to the common ink chamber 6 through an ink supply port. The ink supplied to the common ink chamber 6 is supplied to the independent ink chambers 5 through the ink supply path 7.
- the ink chamber 5 is formed thin so that its bottom wall 8 functions as a diaphragm that can be elastically displaced vertically in FIG. Therefore, the portion of the bottom wall 8 may be referred to as a diaphragm 8 for convenience of the following description.
- the upper surface that is, the bonding surface with the silicon substrate 2 is etched shallowly at a position corresponding to each ink chamber 5 of the silicon substrate 2.
- a recess 9 is formed. Therefore, the bottom wall 8 of each ink chamber 5 faces the surface 92 of the concave portion 9 'of the glass substrate 4 with a very small gap. Since the H0 portion 9 of the glass substrate 4 faces the bottom wall 8 of the ink chamber 5, it is referred to as a diaphragm facing wall or simply a facing wall 91.
- each ink chamber 5 functions as an electrode for storing a charge.
- a segment electrode 10 is formed on the concave surface 92 of the glass substrate 4 so as to face the bottom wall 8 of each ink chamber 5.
- Each segment electrode 10 The surface is covered with an insulating layer made of inorganic glass and having a thickness of G0.
- the segment electrode 10 and each ink chamber bottom wall 8 form counter electrodes (the distance between the electrodes is G) with the insulating layer interposed therebetween.
- the resulting slurry was diluted 10-fold with water, the pH was adjusted with lithium hydroxide, the concentration of the salt was reduced with an ultrafiltration membrane to an electrical conductivity of 0.2 mS / cm, and the carbon black dispersion with a pigment concentration of 15% was concentrated. And Coarse particles were removed by centrifugation, and the mixture was further filtered through a 1-micron Nymouth filter to obtain a carbon black dispersion liquid 1.
- This carbon black has carboxylic acid groups on its surface.
- the total content of Fe, Ca, and Si was less than 1 ppm by measurement of ICP.
- the chloride ion concentration was less than 10 ppm.
- the average particle size (D50%) measured by Microtrac UPA was 95 nm.
- the mixture was adjusted, desalted and concentrated by an ultrafiltration membrane, and the dispersion was dispersed in a car pump rack having a pigment concentration of 10% by weight. This was filtered through a 1 micron nylon filter to obtain a carbon black liquid 2.
- This carbon black had sulfonic acid groups on its surface.
- the total content of Fe, Ca, and Si was less than 100 ppm as determined by ICP.
- the sulfate ion concentration was less than 100 ppm.
- the average particle size was 8 O nm.
- This carbon black had phenylcarboxylic acid groups on its surface.
- the total content of Fe, Ca, and Si was less than 100 ppm by ICP measurement.
- the nitrate ion concentration was less than 10 ppm.
- the average particle size was 99 nm.
- a magenta pigment dispersion liquid 1 having a pigment concentration of 15% was prepared using CI Pigment Magenta 122 as a magenta pigment.
- the total content of the average particles 60 nm, Fe, Ca and Si was less than 100 ppm '.
- a cyan pigment dispersion 1 having a pigment concentration of 15% was prepared using C.I.
- the average particle size was 80 nm, and the total content of Fe, Ca, and Si was 100 ppm or less.
- Magenta pigment C.I. Pigment Red 122
- Cyan pigment C.I. Pigment Blue 15: 3
- Dispersant A Kao's Noeon surfactant "Emulgen 913"), HLB 15.5
- Dispersant B Acryl-based resin aqueous solution "Johncryl 611" (manufactured by Johnson Polymer) (neutralized in ammonia, solid content 20%), acid value 57
- 0.1 part of 30% aqueous ammonia and 79.9 parts of purified water were added to 20 parts of the surface-treated pigment obtained above, and redispersed with a paint conditioner to prepare a pigment concentrate.
- a paint conditioner For pigments not subjected to surface treatment, add 5 parts (solid content) of dispersant B and purified water to 20 parts of pigment, and disperse in a paint conditioner to make a total of 100 parts, reverse osmosis.
- the solution was purified by a membrane to prepare a concentrated recording solution for ink jet.
- the concentrated liquid was filtered through a 1 tm nylon filter and subsequently filtered through a 0.5 / zm polypropylene filter to obtain a used dispersion.
- the content of Fe, Ca, and Si in each dispersion was 100 ppm or less.
- the average particle diameters of the dispersions here are: Yellow dispersion 2: 93 nm, Yellow dispersion 3: 80 nm, Magenta dispersion 2: 60 nm, Magenta dispersion 2: 56 nm, Cyan dispersion 2: 90 nm Cyan Dispersion 3: 87 nm.
- the fixing property on plain paper and the coloring property can be further improved.
- the colored fine particles any of fine particles composed of a polymer and those composed of inorganic fine particles such as silica and alumina can be used.
- inorganic fine particles such as silica and alumina
- acrylic or polyester-based fine particles impregnated with a dye / pigment that is, colored polymer fine particles in which the dye / pigment is present on the surface, inside, or entirely. More specifically, colored fine particles produced by the method disclosed in JP-A-2000-53898 can be mentioned. An example based on this is shown below. - Production Example 7
- a hermetically sealable reaction vessel equipped with a stirring blade, cooling pipe, and nitrogen gas inlet pipe, 20 parts of methylethyl ketone as a polymerization solvent, initially charged monomers and polymerization chain transfer agents having the following composition as a polymerizable unsaturated monomer And the atmosphere was sufficiently replaced with nitrogen gas. Parts are by weight.
- Methyl methacrylate Monomer 1 2 8 parts Metallic acid / Resoleic acid 2-Hydroxyshetinole, Monomer 1 2 parts Methacrylic acid, Monomer 2 9 parts Silicone macromer (manufactured by Chisso Corporation FM-0 7 1 1) 2 parts Styrene acrylic Nitrile macromer
- the above-mentioned bull-based polymer solution was dried under reduced pressure, and 25 g of toluene and 5 g of an anthraquinone-based dye (V) of the following structural formula (V) were added to 5 g of the bull-based polymer and completely dissolved. Then, 2 g of aqueous sodium hydroxide solution was added to partially neutralize the acidic group of the bull polymer. Next, 300 g of ion-exchanged water was added, and the mixture was stirred, and then emulsified for 30 minutes using a nano maker TM ⁇ (manufactured by Nanomizer Inc.) as an emulsifying apparatus.
- TM ⁇ manufactured by Nanomizer Inc.
- the obtained emulsion was concentrated at 60 ° C under reduced pressure to remove toluene completely, and further concentrated by removing a part of water.
- the ultrafiltration membrane was used to remove impurities such as monomers.
- a magenta dispersion liquid 4 (average particle diameter: 98 nm, solid content concentration: 10%) of the bullet polymer fine particles impregnated with the dye was obtained.
- the dye was converted into yellow dispersion 4 (average particle diameter: 98 nm, solid content: 10%) as CI disperse yellow 118, and cyan dispersion 4 as CI disperse blue 36 ( Example 1 having an average particle size of 98 nm and a solid content of 10%) was obtained.
- Carbon dispersion 1 (as solid content in ink) 5% Diethylene glycol 10% Grease mouth 10%
- Magenta ink 1 was prepared in the same manner as in (1) above except that the following composition was used and the pH was adjusted to 8.5 with lithium hydroxide.
- Magenta dispersion liquid 2 (as solid content in ink) 3% Compound of structural formula (III) (X: nitrate ion) 2% Dethylene glycol 5% Glyceal 5%
- Ink 2 was prepared.
- Cyan dispersion 4 (as solid content) 4.0% Organic dye (C3) 1.2% Compound of formula (III) (X: lactate ion) 1% Ethylene glycol 5% Glyceal 2%
- Ink set 3 was produced in the same manner.
- Inkjet printer with 18 nozzles of each color of thermal ink jet method and 18 nozzles of 600 di pitch and 300 nozzles of 300 dizzles with 600 di pitch.
- An ink jet printer with nozzles, an electrostatic actuator was used to pressurize the liquid chamber flow path, and printing was performed using an ink jet printer with 300 nozzles for each color. Bleeding, color tone, and density were visually judged comprehensively. The color development during OHP projection was also evaluated.
- the printing paper is commercially available recycled paper, high-quality paper, pound paper, a glossy film with an absorbent layer of a water-soluble resin layer, and OHP sheets. Evaluation rank>-Regardless of paper type, bleeding at the boundary of the two-color overlapped area, high image density, high clarity, and high color reproducibility: 5, Above low image density: 4, Color bleeding Small, but secondary color unevenness is observed depending on the paper type: 3, Color boundary bleed occurs depending on the paper type: 2, Image density is low and poor in sharpness: 1
- the image sample was immersed in water at 30 ° C. for 1 minute, and the change in image density before and after the treatment was measured by X-Rite 938, and the water resistance (colorfastness%) was determined by the following equation.
- Colorfastness (%) [1 (Image density after processing / (Image density before processing)]] X 100
- 5 was 10% or less, 4 was 20% or less, 3 was less than 30%, 2 was 30% or more, and 1 was 50% or more.
- the filter paper was pressed against the printed image under certain conditions, and the time required for the ink to stop transferring to the filter paper was measured.
- the ink B containing the specific quaternary ammonium salt is used together with the ink A in which an anionic group is introduced into a coloring material, Even if a color image is formed at a high speed, an ink set excellent in reproducing secondary colors on plain paper can be obtained.
- the ink jet recording ink set of the present invention by using self-dispersion type carbon black as a black pigment, it is possible to obtain an ink set in which color boundaries between black colors on plain paper are suppressed.
- the ink jet recording ink set of the present invention by using the ink B containing the specific quaternary ammonium salt described above together with the ink A using the organic self-dispersing organic pigment, the color of a color image on plain paper is improved.
- ADVANTAGE OF THE INVENTION According to the ink set for ink jet recording of this invention, the favorable ink set for forming a color image on plain paper can be provided by using the preferable combination of color material for an ink set.
- the ink set with favorable storability can be ensured by adding the water-soluble organic solvent which does not generate
- the image formation on plain paper can be performed favorably by using a specific kind of surfactant suitable for improving the wettability to paper. .
- the image formation on plain paper is further improved by adding a hydrophilic solvent suitable for improving the wettability of the ink to paper and imparting permeability. Can be done.
- the ink jet recording ink set of the present invention by specifying the pH range of the ink, it is possible to obtain appropriate matching characteristics with members used in the recording apparatus.
- the recording is performed using the above-described ink set, a high-quality color image with high-speed printing and excellent secondary color reproduction can be formed.
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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)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02741195A EP1405882B1 (en) | 2001-06-19 | 2002-06-19 | Ink jet recording ink set |
CA2455309A CA2455309C (en) | 2001-06-19 | 2002-06-19 | Ink set for ink jet recording |
DE60223682T DE60223682T2 (de) | 2001-06-19 | 2002-06-19 | Tintenstrahldrucktintenset |
MXPA03011686A MXPA03011686A (es) | 2001-06-19 | 2002-06-19 | Conjunto de tinta para registro por inyeccion de tinta. |
KR1020037016452A KR100904474B1 (ko) | 2001-06-19 | 2002-06-19 | 잉크젯 기록용 잉크 세트 |
US10/480,801 US7278726B2 (en) | 2001-06-19 | 2002-06-19 | Ink jet recording ink set |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001185111 | 2001-06-19 | ||
JP2001-185111 | 2001-06-19 |
Publications (1)
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WO2002102906A1 true WO2002102906A1 (en) | 2002-12-27 |
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ID=19024752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/006123 WO2002102906A1 (en) | 2001-06-19 | 2002-06-19 | Ink jet recording ink set |
Country Status (9)
Country | Link |
---|---|
US (1) | US7278726B2 (ja) |
EP (1) | EP1405882B1 (ja) |
KR (1) | KR100904474B1 (ja) |
CN (1) | CN100341959C (ja) |
CA (1) | CA2455309C (ja) |
DE (1) | DE60223682T2 (ja) |
ES (1) | ES2295355T3 (ja) |
MX (1) | MXPA03011686A (ja) |
WO (1) | WO2002102906A1 (ja) |
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EP1571185A1 (en) * | 2004-03-01 | 2005-09-07 | Hewlett-Packard Development Company, L.P. | Black pigmented ink-jets inks with improved frequency response |
US7370952B2 (en) | 2001-09-21 | 2008-05-13 | Ricoh Company, Ltd. | Ink, and, inkjet recording process, ink cartridge, recording unit, and inkjet recording apparatus using the ink |
US8118419B2 (en) | 2001-09-20 | 2012-02-21 | Ricoh Company, Ltd. | Ink jet recording method, recording device, ink/recording medium set, recording matter |
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-
2002
- 2002-06-19 ES ES02741195T patent/ES2295355T3/es not_active Expired - Lifetime
- 2002-06-19 MX MXPA03011686A patent/MXPA03011686A/es active IP Right Grant
- 2002-06-19 KR KR1020037016452A patent/KR100904474B1/ko not_active IP Right Cessation
- 2002-06-19 EP EP02741195A patent/EP1405882B1/en not_active Expired - Lifetime
- 2002-06-19 DE DE60223682T patent/DE60223682T2/de not_active Expired - Lifetime
- 2002-06-19 CA CA2455309A patent/CA2455309C/en not_active Expired - Fee Related
- 2002-06-19 WO PCT/JP2002/006123 patent/WO2002102906A1/ja active IP Right Grant
- 2002-06-19 US US10/480,801 patent/US7278726B2/en not_active Expired - Fee Related
- 2002-06-19 CN CNB028122917A patent/CN100341959C/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000053898A (ja) * | 1998-08-07 | 2000-02-22 | Kao Corp | インクジェット記録用水系インク |
JP2001115069A (ja) * | 1999-10-19 | 2001-04-24 | Ricoh Co Ltd | インクジェット記録用インクセット |
Non-Patent Citations (1)
Title |
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See also references of EP1405882A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8118419B2 (en) | 2001-09-20 | 2012-02-21 | Ricoh Company, Ltd. | Ink jet recording method, recording device, ink/recording medium set, recording matter |
US7370952B2 (en) | 2001-09-21 | 2008-05-13 | Ricoh Company, Ltd. | Ink, and, inkjet recording process, ink cartridge, recording unit, and inkjet recording apparatus using the ink |
EP1571185A1 (en) * | 2004-03-01 | 2005-09-07 | Hewlett-Packard Development Company, L.P. | Black pigmented ink-jets inks with improved frequency response |
US7163577B2 (en) | 2004-03-01 | 2007-01-16 | Hewlett-Packard Development Company, L.P. | Black pigmented ink-jet inks with improved frequency response |
Also Published As
Publication number | Publication date |
---|---|
US20040155946A1 (en) | 2004-08-12 |
KR20040010725A (ko) | 2004-01-31 |
CN100341959C (zh) | 2007-10-10 |
DE60223682T2 (de) | 2008-10-30 |
CA2455309A1 (en) | 2002-12-27 |
KR100904474B1 (ko) | 2009-06-24 |
CA2455309C (en) | 2010-03-30 |
EP1405882B1 (en) | 2007-11-21 |
EP1405882A1 (en) | 2004-04-07 |
DE60223682D1 (de) | 2008-01-03 |
US7278726B2 (en) | 2007-10-09 |
MXPA03011686A (es) | 2004-03-19 |
EP1405882A4 (en) | 2004-12-08 |
CN1518583A (zh) | 2004-08-04 |
ES2295355T3 (es) | 2008-04-16 |
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