Abstract: An ink jet recording ink is provided which does not have a problem concerning curling of a recording medium containing cellulose, and can deal with high-definition image recording while maintaining good response at a high level during ejection at a high drive frequency and good startup properties. The ink contains water, a colorant, a compound represented by the following general formula (I) accounting for 8 to 40% by mass of the total mass of the ink, and plural types of nonionic surfactants accounting for 0.

Abstract: There is provided an ink composition for ink jet recording, which can yield images having excellent gloss with good color reproduction even on various recording media having a low level of water absorption, especially synthetic paper and printing paper for running-on. The ink composition for ink jet recording comprises a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water-soluble 1,2-alkanediol, a poor water-soluble 1,2-alkanediol, and a poor water-soluble both terminal alkanediol, and the alkanediol satisfies a requirement on a weight basis of A:(B+C)=2:1 to 2:3 wherein A represents the content of the water-soluble 1,2-alkanediol in the alkanediol; B represents the content of the poor water-soluble 1,2-alkanediol in the alkanediol; and C represents the content of the poor water-soluble both terminal alkanediol in the alkanediol.

Abstract: A photocurable pigment type inkjet ink composition including 5 to 95 wt % of water; 0.5 to 20 wt % of a pigment; 1 to 70 wt % of a photocurable component; and 0.0001 to 30 wt % of a reactive surfactant. The reactive surfactant can serve as a pigment dispersant for dispersing pigment particles or as an emulsifier for emulsifying the photocurable component.

Abstract: The present invention provides an ink jet recording ink which has excellent stability, high coloration on regular paper, high glossiness on gloss paper and excellent discharge stability of an ink from an ink jet head. This ink jet recording ink uses 2-methyl-2-propyl-1,3-propanediol. The added amount of 2-methyl-2-propyl-1,3-propanediol is no less than 0.1% by weight and no more than 2.0% by weight.

Abstract: There is provided an ink composition that, even on various recording media, especially gloss paper of a printing paper base, can yield an image having excellent gloss, can realize good recovery from clogging and handleability of recorded matter, and, at the same time, can realize excellent ejection stability and color reproduction. The ink composition for ink jet recording comprises at least a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water soluble 1,2-alkanediol and a water soluble alkanediol having a hydroxyl group at both ends of its main chain, and the surfactant is a polyorganosiloxane.

Abstract: An ink composition including: a colorant, a betaine-based surfactant represented by the following formula (1) and a defoaming agent: [c1] (R)p-N-[L-(COOM)q]r??(Formula 1) (wherein, R represents a hydrogen atom, alkyl group, aryl group or heterocyclic group, L represents a divalent or more linking group, M represents a hydrogen atom, alkaline metal atom, ammonium group, protonated organic amine or nitrogen-containing heterocyclic group or quaternary ammonium ion group, or represents a group that does not exist as a cation in the case of being a counter ion of an ammonium ion comprising an N atom in formula (1), q represents an integer of 1 or more, r represents an integer of 1 to 4, p represents an integer of 0 to 4, p+r is 3 or 4, N is a nitrogen atom that composes a quaternary amine in the case where p+r is 4, R may be the same or different when p is 2 or more, COOM may be the same or different when q is 2 or more, and L-(COOM)q may be the same or different when r is 2 or more).

Abstract: An ink composition comprising: a betaine-based surfactant represented by the following general formula (1) and a linear saturated aliphatic alcohol having a hydroxyl value of 1 to 2 and 4 to 6 carbon atoms: [C 1] (R)p—N-[L-(COOM)q]r??Formula (1) (wherein, R represents a hydrogen atom, alkyl group, aryl group or heterocyclic group, L represents a divalent or more linking group, M represents a hydrogen atom, alkaline metal atom, ammonium group, protonated organic amine or nitrogen-containing heterocyclic group or quaternary ammonium ion group, or represents a group that does not exist as a cation in the case of being a counter ion of an ammonium ion formed of an N atom in formula (1), q represents an integer of 1 or more, r represents an integer of 1 to 4, p represents an integer of 0 to 4, p+r is 3 or 4, N is a nitrogen atom that composes a quaternary amine in the case p+r is 4, R may be the same or different when p is 2 or more, COOM may be the same or different when q is 2 or more, and L-(COOM)q may be the

Abstract: An ink composition having, as essential components, at least a diacetylene tetraol compound represented by general formula (1) below and a glycol ether represented by general formula (2) below: (wherein R1 and R2 each independently represent C1-3 alkyl groups, —O-Et- represents oxyethylene, and k, l, m and n are each integers from 0 to 2); (wherein R represents a C8 alkyl group, and n is an integer from 4 to 8).

Abstract: An ink composition includes: a coloring material having an azo group bound to a heterocyclic group; an aqueous medium; and at least one of an acetylene diol and an ethylene oxide adduct of the acetylene diol, wherein an average value of an addition molar number of the at least one of the acetylene diol and the ethylene oxide adduct of the acetylene diol is 0 or more and less than 4.

Abstract: An ink composition comprising: a betaine-based surfactant represented by the following general formula (1), a defoaming agent in the form of a glycol ether represented by the following general formula (2), and/or a glycol ether represented by the following general formula (3): (R)p—N—[L—(COOM)q]r??Formula (1) (wherein, R represents a hydrogen atom, alkyl group, aryl group or heterocyclic group, L represents a divalent or more linking group, M represents a hydrogen atom, alkaline metal atom, ammonium group, protonated organic amino or nitrogen-containing heterocyclic group or quaternary ammonium ion group, or represents a group that does not exist as a cation in the case of being a counter ion of an ammonium ion formed by an N atom in formula (1), q represents an integer of 1 or more, r represents an integer of 1 to 4, p represents an integer of 0 to 4, p+r is 3 or 4, N is a nitrogen atom that composes a quaternary amine in the case p+r is 4, R may be the same or different when p is 2 or more, COOM may be th

Abstract: There is provided an ink composition for ink jet recording that, even on printing paper for running-on, can realize excellent gloss and good color reproduction and, at the same time, is excellent in ejection stability and recovery from clogging. The ink composition for ink jet recording comprises at least a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water soluble 1,2-alkanediol and a slightly water soluble 1,2-alkanediol, and the surfactant is a polyorganosiloxane.

Abstract: An ink composition comprising a colorant, a solvent, a surfactant, and a defoaming agent is provided. The defoaming agent has a structure of Formula R1—X—(CH2CH2O)m-(CHCH3CH2O)n-R2??(I), in which, X is selected from the group consisting of COO, O, S, R3—N and R4(R5)—C; R1, R2, R3, R4, and R5 are each independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group and a substituted or unsubstituted aralkyl group; m is an integer from 0 to 100; and n is a natural number from 1 to 100. The ink composition according to the exemplary embodiment exhibits low foaming properties in order to flow smoothly and has a good initial discharge capacity and less ink bleeding so that it is possible to achieve a high print quality during printing, and an ink cartridge including the same.

Abstract: An ink for ink-jet recording includes: at least one of an azo dye having a specific structure; and at least one of a betaine surfactant and a nonionic surfactant, and an ink set includes the ink, and an ink-jet recording method used the ink.

Abstract: The present invention relates to a black dye composition, comprising: (a) at least one azo dye of the following formula (I), (b) at least one azo dye of the following formula (II) or (III), wherein R1, R2, and R3 are defined the same as the specification. The present invention also relates to a black ink composition afforded from the aforementioned black dye composition. The black ink composition of the present invention for textile digital printing exhibits the properties of excellent color depth, fixation, stability of storage, stability and accuracy of printing for long time, and improves the issue of nozzle cloggage.

Abstract: Black ink compositions are provided. First embodiment contains a water-soluble long-wavelength dye L and a water-soluble short-wavelength dye S, in which the water-soluble short-wavelength dye S has 3 or more azo groups per molecule and a naphthalene skeleton. Second embodiment contains a water-soluble short-wavelength dye S whose absorption spectrum in aqueous solvent has a maximum between 440 nm and 540 nm and a half-band width of 90 to 200 nm and a water-soluble long-wavelength dye L whose absorption spectrum in aqueous solvent has a maximum between 550 nm and 700 nm and a half-band width of 100 nm or more. Third embodiment contains water, a water-miscible organic solvent, and a coloring material, in which C. I. Direct Red 84 is contained as a water-soluble short-wavelength dye S.

Abstract: Disclosed is an ink composition for ink jet recording, which possesses excellent gloss and good color reproducibility on various recording media, especially printing paper for running-on. The ink composition for ink jet recording comprises at least a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water soluble 1,2-alkanediol and a water insoluble both terminal alkanediol.

Abstract: Disclosed is a water based ink composition for a rollerball pen that includes at a least colorant, a water-soluble organic solvent, water, a shear thinning viscosity property-providing agent, a lubricant, and a bubble suppressant. The ink composition includes a phosphate-ester based surfactant having a structure of general formula 1 as the lubricant, and an erythorbic acid or a derivative thereof as the bubble suppressant (n represents an integer of 1 or more, R represents an alkyl group having carbon numbers of 12 to 15, and R? represents H or R—(C2H4O)n—).

Abstract: The present invention is directed to dye sets and ink formulated using the same, and in particular dye and ink sets for ink jet printing. The dyes/inks are configured to work in cooperation with one another to produce high quality printed images.

Abstract: A black ink composition comprising a colorant represented by Formula 1 below same as claim 1 and a colorant represented by Formula 2 below same as claim 1.

Abstract: Oil-based ink composition for a ballpoint pen, involving at least a coloring material, a resin and a solvent selected from the group consisting of an alcohol, a polyhydric alcohol and a glycol ether each having a vapor pressure of 0.001 mmHg or more at 25° C. as a main solvent and further involving a phosphoric acid ester neutralized material; in order to provide an ink composition for a ballpoint pen which suppresses blobbing of a written letter at the start of writing and is capable of being excellent in a soft smooth feeling on writing.

Abstract: An inkjet ink for preparing a lithographic printing plate contains a contrast dye including A, D, and B groups wherein A represents a phosphorous containing group capable of reacting with the surface of a lithographic receiver; D represents a chromophore group absorbing light between 400 nm and 700 nm; and B represents an aliphatic group of at least 6 carbon atoms. A lithographic printing plate includes such an inkjet ink and methods for direct plate making include jetting on a printing plate precursor.

Abstract: An ink composition for inkjet recording comprising water and a compound represented by the following Structure: wherein at least one of Z1, Z2, Z3, and Z4 are not hydrogen; each of R1, R2 and R3 are independently selected from the group consisting of hydrogen and methyl, R4 is —H, —CH3, —C2H5, or —C3H7, or —CH2O(CH2CHR5O)x4Z4, wherein each R5 is independently hydrogen or methyl; b is 0 or 1; x1, x2, x3, and x4 are each equal to at least 1, the sum of x1, x2, x3 is 3 to 45 when R4 is not —CH2O(CH2CHR5O)x4Z4, and the sum x1, x2, x3, and x4 is from 3 to 60 when R4 is —CH2O(CH2CHR5O)x4Z4. Such compounds have been found to provide improved curl control.

Abstract: There is provided a water-base ink composition which has excellent ejection stability and can be evenly printed on recording media. The water-base ink composition comprises at least: a colorant component selected from dyes and pigments; a monovalent or divalent branched alcohol with C5 to C10 chain length; an acetylene glycol surfactant and/or a penetrating organic solvent; a humectant; and water. The monovalent or divalent branched alcohol with C5 to C10 chain length, the acetylene glycol surfactant and/or the penetrating organic solvent, and the humectant are selected from combinations of branched alcohols, acetylene glycol surfactants and/or penetrating organic solvents, and humectants which are miscible with one another.

Abstract: An ink composition which comprises: a dye which is represented by formula (1), which is described in the specification, and has at least one ionic hydrophilic group, wherein the dye has a molecular weight of from 310 to 500 per one ionic hydrophilic group, and a recording method which comprises: discharging ink droplets of the ink composition onto plain paper.

Abstract: The present invention relates to a diazo dyestuff compound of the following formula (I) wherein, M is H, Na, or Li. The formula (I) compound is particularly suitable for using as a component in a black dye composition for ink-jet printing ink, and inkjet printing inks with good light-fastness are obtained.

Abstract: Disclosed is an ink composition that, while improving print quality, advantageously has excellent ink ejection stability and does not significantly erode members such as a head and, at the same time, can meet a recent demand for highly skillful printing conditions, for example, high-speed printing with very small amounts of droplets. Ink jet recording is carried out using an ink composition comprising an acetylene glycol, an alcohol adduct of ethylene oxide and/or propylene oxide, and a pyrrolidone or its derivative in a specific composition.

Abstract: A magenta ink composition used as a colorant, containing at least one type of compound represented by Formula (I) below and at least one type of compound represented by Formula (II) below: (wherein A represents the residue of the five member heterocyclic diazo moiety A-NH2; B1 and B2 represent —CR1? and —CR2?, or one represents a nitrogen atom, and the other represents —CR1? or —CR2?; R5 and R6 each independently represents a hydrogen atom, aliphatic group, aromatic group, heterocyclic group, acyl group, alkoxy carbonyl group, aryloxy carbonyl group, carbamoyl group, alkyl sulfonyl group, aryl sulfonyl group, or sulfamoyl group, each group therein being optionally substituted; G, R1 and R2 each independently represents a hydrogen atom, halogen atom, aliphatic group, aromatic group, heterocyclic group, cyano group, carboxyl group, carbamoyl group, alkoxycarbonyl group, aryloxy carbonyl group, acyl group, hydroxyl group, alkoxy group, aryloxy group, silyloxy group, acyloxy group, carbamoyloxy group, heteroo

Abstract: The present invention relates to coating and printing ink compositions possessing silicone surfactants compositions comprising fluorine-free organomodified disiloxanes which are resistant to hydrolysis between a pH of about 3 to a pH of about 12. The coatings and printing ink composition of the present invention exhibit enhanced wetting, flow and leveling properties.

Abstract: The present invention is drawn toward a black ink-jet ink, comprising a liquid vehicle and a black colorant solubilized or dispersed in the liquid vehicle. The liquid vehicle can include water, a cosolvent, a solubilized naturally occurring amino acid, and an amphoteric surfactant. Other components can optionally be present as well.

Abstract: The present invention relates to a black dye composition, comprising: (a) a compound of the following formula (I), (b) a compound of the following formula (II), (c) a compound of the following formula (III), wherein R1, R2, R3, and R4 are defined the same as the specification. The present invention also relates to a black ink composition afforded from the aforementioned black dye composition. The black ink composition of the present invention is suitable for paper ink-jet printing, and exhibits the properties of good light-fastness, high color strength, solubility, and fine fluency of ink.

Abstract: A water-based ink for ink-jet recording contains water, a water-soluble organic solvent, a coloring agent and a crown ether. Even when the water-based ink is employed in the ink passage of an ink-jet recording apparatus and comes into contact with rubber members employed in the ink passage, the occurrence of precipitation is prevented.

Abstract: Disclosed is an ink jet ink composition suitable for printing on substrates holding high static electrical charges such as polyethylene and PVC films and tubes. The ink jet ink composition comprises an organic solvent having a boiling point greater than 56° C., a binder resin soluble in the organic solvent, a colorant soluble in the organic solvent, and a polyvinylbutyral resin. Also disclosed is a method of printing images on such plastic substrates and a method for reducing microsatellite formation during ink jet printing. The ink jet ink composition provides improved print quality and reduced need for cleaning the nozzle.

Abstract: A black ink composition includes a mixture of an azo metal complex dye having a good light fastness and water fastness and an adjective dye. The ink composition has a neutral black gradation, a high optical density and a good decap performance at a print head of an inkjet printer while printing. An inkjet cartridge for inkjet printing includes the black ink composition, and a recording apparatus for inkjet printing including the ink cartridge are also provided.

Abstract: An additive comprising an acetylene glycol or ethylene oxide/propylene oxide adduct of acetylene glycol and a sulfur-containing surfactant is added to a dye and water to form an ink composition which exhibits good wetting, penetrating and dispersing properties due to a reduced dynamic surface tension and complies with the environmental problem.

Abstract: An ink jet recording ink containing water and a coloring material, wherein the ink jet recording ink further contains an ethylenediamine compound represented by Formula (I): wherein R1, R2, R3 and R4 are each selected from the group consisting of a hydrogen atom, an alkyl group and an alkylene oxide group, provided that at least one of R1 and R2 and at least one of R3 and R4 are each an alkylene oxide group, and that alkylene oxide units in one molecule are 2 to 20 in total number.

Abstract: It is an object of the present invention to provide an ink composition using a metal phthalocyanine type cyan dye, according to which the indoor storability (gas resistance) of images created using the ink composition can be improved. The present invention provides an ink composition containing water, metal phthalocyanine type cyan dye, and aromatic compound having a sulfo group and/or salt thereof represented by undermentioned general formula (1) and/or (2). Moreover, the present invention provides an ink jet recording method comprising carrying out recording by discharging droplets of an ink composition and attaching the droplets to a recording medium, wherein the ink jet recording method uses an ink composition as described above as the ink composition. Furthermore, the present invention provides a recorded article characterized by being obtained by recording using an ink composition as described above.

Abstract: An inkjet recording ink composition comprising an aqueous medium having dissolved and/or dispersed therein at least one dye, wherein at least one betaine-type surfactant is contained in the ink composition. The dye is preferably a magenta dye having an azo structure or a cyanine dye having a phthalocyanine structure. The inkjet recording ink composition is excellent in ejection property, light fastness, heat fastness and oxidation resistance and causing less dye bleeding.

Abstract: An ink composition comprising: a coloring agent having an oxidation potential of more electropositive than 1.0V (vs SCE); a water; a guanidine compound; and a surfactant, the ink composition to be used in inkjet recording and an inkjet recording method with the use of the ink composition.

Abstract: The present invention relates to a black dyes composition for ink-jet printing ink comprising (A) a compound of the following formula (I) wherein, R1 is —SO2CH2CH2OSO3H or —SO2CH?CH2 or —SO2CH2CH2OH; M is H, Na or Li; (B) a compound of the following formula (II) wherein, R1 is —SO2CH2CH2OSO3H or —SO2CH?CH2 or —SO2CH2CH2OH; M is H, Na or Li; and (C) a compound of the following formula (III) wherein, R1 is —SO2CH2CH2OSO3H or —SO2CH?CH2 or —SO2CH2CH2OH; M is H, Na or Li; these compositions are particularly suitable for using in paper inkjet printing ink, and inkjet printing inks with good light-fastness and solubility are obtained.

Abstract: Disclosed is an ink composition which is suitable for ink jet printing and comprising an organic solvent, for example, methanol, a water-soluble resin, a water-soluble dye, and optionally a surfactant, wherein, if water is present, it is present in an amount less than 50% by weight of the ink composition. The ink composition is suitable for printing messages on substrates such as diaper outer liner fabrics. The printed messages are removed upon contact with water or urine or other aqueous body fluid, thereby providing an indication of diaper wetness.

Abstract: It is an object of the present invention to provide an ink composition with which the indoor storage stability (gas resistance) of an image produced with an ink composition featuring a phthalocyanine-based cyan dye can be increased without causing any additive precipitation or bronzing. The present invention provides an ink composition containing at least water, a phthalocyanine-based cyan dye, and a lithium salt of an aromatic compound having a sulfo group and expressed by General Formulas 1 and/or 2 in the claims. The present invention also provides an ink composition containing at least water, a phthalocyanine-based cyan dye, and a lithium salt of an aromatic compound having a sulfo group and expressed by General Formulas 5 and/or 6 in the claims.

Abstract: An object of the present invention is to provide an ink composition that can improve the preservation characteristics (gas fastness) of an image produced by an ink composition which uses phthalocyanine group cyan dye. The present invention provides an ink composition wherein at least water, the phthalocyanine group cyan dye indicated by the general formula (I), and an aromatic compound having a sulfone group and/or the salt thereof represented by the general formulae (a) and/or (b) are contained; and an ink composition wherein at least water, the phthalocyanine group cyan dye indicated by the general formula (VIII), and an aromatic compound having a sulfone group and/or the salt thereof represented by the general formulae (a) and/or (b) are contained.

Abstract: Disclosed is a water based ink composition for a rollerball pen that includes at a least colorant, a water-soluble organic solvent, water, a shear thinning viscosity property-providing agent, a lubricant, and a bubble suppressant. The ink composition includes a phosphate-ester based surfactant having a structure of general formula 1 as the lubricant, and an erythorbic acid or a derivative thereof as the bubble suppressant (n represents an integer of 1 or more, R represents an alkyl group having carbon numbers of 12 to 15, and R? represents H or R—(C2H4O)n—).

Abstract: An ink composition is manufactured to contain a surfactant having difference d1 (?10??) which is difference between dynamic surface tension (?10) of the solution obtained by making 0.1 wt % solution dissolved in purified water to be measured by using a maximum bubble pressure method at the bubble frequency of 10 Hz at a temperature from 24° C. to 26° C. and static surface tension (?) to be measured at a temperature from 24° C. to 26° C. and which satisfies 0 mN/m?d1?15 mN/m. An image is recorded by applying a voltage to partitions made of a piezoelectric material thereby applying a pressure to the ink composition supplied from an ink tank to an ink chamber of an ink head to discharge a liquid droplet of the ink composition, and depositing the liquid droplet onto a recording material.

Abstract: According embodiments of the present disclosure, a water-based ink set for ink-jet recording is provided. The ink set may contain a black ink, a cyan ink, a magenta ink and a yellow ink. Each ink may contain a polyoxyethylene alkyl ether sulfonate.

Abstract: An ink composition which comprises: a dye which is represented by formula (1), which is described in the specification, and has at least one ionic hydrophilic group, wherein the dye has a molecular weight of from 310 to 500 per one ionic hydrophilic group, and a recording method which comprises: discharging ink droplets of the ink composition onto plain paper.

Abstract: A water base ink for ink-jet recording is provided, which is excellent in time-dependent stability of ink characteristics, which can be stably jetted over a long period of time, and which makes it possible to perform the high quality recording. The water base ink for ink-jet recording contains a self-dispersing type water-insoluble particulate coloring agent, a compound represented by the following formula (1), a surfactant having a nitrogen atom in a molecule, water, and a water-soluble organic solvent, wherein a surface tension is 30 to 50 mN/m, and a ratio of change of the surface tension after storage at 60° C. for 2 weeks is less than 5%: R1—O—(CH2CH2O)x—SO3Na??(1) wherein R1 represents an alkyl group and x is 20 to 30 in the formula (1).

Abstract: The present invention provides an ink-jet recording method for forming an image by applying an ink to a recording medium. The ink contains at least water, a colorant and a surfactant. The content of the surfactant is higher than or equal to the critical micelle concentration of the surfactant, and the ink used has a surface tension lower than or equal to the critical surface tension of the recording medium. The ink is applied on the recording medium, and the surface tension of the ink is increased to a surface tension higher than the critical surface tension of the recording medium after the ink contacts the recording medium.

Abstract: The present invention discloses a yellow dye compound having a structure of the following formula (I): wherein M is H, Li, NH4 or Na. The dye compound of the present invention is particularly applied to yellow dye compound for paper-printing ink jet ink and can be made into yellow ink jet ink with greenish yellow, wide color gamut, and excellent solubility.

Abstract: A water-based ink for ink-jet recording contains water, a water-soluble organic solvent, a coloring agent and a crown ether. Even when the water-based ink is employed in the ink passage of an ink-jet recording apparatus and comes into contact with rubber members employed in the ink passage, the occurrence of precipitation is prevented.