Abstract: A water-color ink with which a high print quality can be obtained on ordinary paper, recycled paper or coated paper, and which has excellent storage stability. The water-color ink includes at least a color material and 2-butyl-2-ethyl-1,3-propanediol.

Abstract: Disclosed herein is an ink comprising (i) first and second organic compounds which are incompatible with each other; (ii) at least one of a compound exhibiting fluorescence properties and a coloring material exhibiting fluorescence properties; and (iii) a liquid medium dissolving or dispersing the components (i) and (ii) therein.

Abstract: To provide an ink set capable of recording images with good ozone fastness on a recording medium, an ink set of the present invention comprises at least a yellow ink composition, a magenta ink composition, and a cyan ink composition. The cyan ink composition contains at least one of the compounds expressed by formula (1) below as a cyan dye: and the magenta ink composition contains, as a colorant, at least one substance selected from the group consisting of compounds expressed by formula (2) below: and salts thereof (in formula (2), A represents an alkylene group, an alkylene group containing a phenylene group, or a group expressed by formula (3) below: and X represents a group selected from the group consisting of NH2, OH, and Cl).

Abstract: Provided is a water-based ink composition for a writing instrument comprising at least a colorant and water, wherein a nonionic high molecular surfactant having an alkylene oxide chain as a hydrophilic group and having an average molecular weight of 3000 to 200,000 is added to the ink composition in a range of 0.1 to 30% by weight. The above nonionic high molecular surfactant has preferably an HLB of 8 or more or a cloud point of 50° C. or higher and includes N-polyoxyalkylene-polyalkylenepolyamine and a polyoxyethylene-polyoxypropylene block polymer.

Abstract: The invention provides for thickeners for inks and coating materials, comprising polyurethanes, water, viscosity regulators, and, if desired, organic solvents, wherein said viscosity regulators comprise compounds of the general formula (I) R1—O—(SO)a—(EO)b—(PO)c—(BO)d-(DTO)e—R2 in which R1 and R2 independently of one another are one of the radicals from the group consisting of hydrogen, an aliphatic or cycloaliphatic hydrocarbon radical which optionally is substituted and/or contains multiple bonds and/or contains heteroatoms, an aromatic radical which optionally is substituted and/or contains heteroatoms, an acyl radical, a carboxyacyl radical, and a carboxyalkyl radical, a=1 to 5, b=3 to 30, c=0 to 5, d=0 to 5, and e=0 to 5 where (a+c+d+e)<=b.

Abstract: A ballpoint ink composition capable of preventing a blobbing phenomenon by controlling the volatility of the ink solvent to prevent extreme drying on the ball surface and control the internal cohesion of the ink is provided, which is an oil-based ballpoint ink composition comprising, as the main solvent, a solvent represented by the following chemical structural formula and further containing at least one or more surfactant selected from the group consisting of a polyoxyethylene alkyl ether, a fatty acid polyoxyethylene alkyl ether, a polyethylene glycol fatty acid ester, a polyoxyethylene glycerin fatty acid ester and a polyoxyethylene sorbitan fatty acid ester: (wherein R1, R2 and R3 each is independently H or CH3).

Abstract: A water base ink for ink-jet recording contains 0.1% by weight to 4.0% by weight of C.I. Direct Yellow 132; not less than 0.5% by weight of glycol ether having a melting point of not more than ?45°C.; and a water-soluble organic solvent in which a solubility of C.I. Direct Yellow 132 at 20° C. is not less than 5%. The ink satisfies 0.2?B/A and 3?C/A. B/A represents a weight ratio of the glycol ether to the C.I. Direct Yellow 132 contained in the ink, and C/A represents a weight ratio of the water-soluble organic solvent to the C.I. Direct Yellow 132 contained in the ink. The stability in long-term storage after the evaporation of water or at low temperatures can be obtained even when C.I. Direct Yellow 132 is used in the water-base ink for the ink-jet recording.

Abstract: This invention relates to a water-based ink for ink-jet thermal printing containing a surface-active agent having, at a certain concentration, a slow dynamic rearrangement. This surfactant system gives the ink a high surface tension under dynamic conditions which grants greater droplet ejection frequencies with respect to the inks usually employed. At the same time, the ink's low static surface tension value means that it has correct paper wettability properties.

Abstract: An Ink-jet ink composition for piezoelectric in-jet printing comprising: (a) a hydrophobic dye; (b) an oil-in-water microemulsion including: (i) a volatile oil; (ii) water; (iii) a co-solvent; (iv) at least one surfactant; and (v) a binder, wherein upon application of the ink to a substrate surface, the volatile oil evaporates and nanoparticles are formed. The invention additionally discloses a printing process using the ink composition.

Abstract: A dye for ink-jet printing on both hydrophilic and hydrophobic papers. The dye includes a chromophore tonically coupled to a counterion. One of the chromophore and the counterion includes a hydrophilic moiety. The other includes a hydrophobic moiety.

Abstract: An inkjet ink set comprising at least two inks, wherein at least one ink contains a betaine compound and at least one other ink contains a nonionic surfactant.

Abstract: A novel fluorescent ink is provided which contains at least a coloring material and an aqueous liquid medium for dissolving the coloring material, wherein the coloring material comprises C.I. Acid Red 52 and at least one direct dye, the content of the C.I. Acid Red 52 ranging from 0.1 to 0.4% by weight based on the total amount of the ink, and the content of the direct dye ranging from 0.15 to 0.4% by weight based on the total amount of the ink, and the weight ratio of the direct dye to the C.I. Acid Red 52 is not higher than 1.6. This fluorescent ink is capable of forming prints with fluorescence of high intensity and with high water resistance.

Abstract: There is provided a water-based ink that gives good coloration and little blurring on regular paper, gives adequate coloration on specialist paper, and has good fixability, and further gives excellent discharge stability with ink jet recording, and moreover exhibits the effect of a chelating agent even in a small amount, and is not harmful due to evaporating, subliming or the like.

Abstract: An ink containing a water, a water-soluble organic solvent, a dye, and a betaine compound, which optionally further contains a nonionic surfactant or at least one another betaine compound.

Abstract: The present invention provides an aqueous ink composition comprising a color microparticle dispersion including an oil-soluble dye, a hydrophilic organic solvent and a perfluoroalkylenesulfonic acid or a fluorine type surfactant other than derivatives thereof, and an ink jet method for recording an image by using this aqueous ink composition.

Abstract: The present invention provides an ink for ink jet recording, in which the formation of a high-quality image is possible, image keeping quality is excellent, the ink is not dried at an ink jet head, and ejection stability is high, wherein the ink for ink jet recording comprises: at least one dye having a specific structure, in which the at least one dye is dissolved or dispersed in an aqueous medium; and a betaine surfactant, wherein, when the ink has been shaken 30 times or more for 10 seconds and allowed to stand for 3 minutes, a bubble height in the ink is 30 mm or less.

Abstract: A water base ink for ink-jet recording contains a surfactant represented by the following formula (1) or (2), dipropylene glycol, a coloring agent, and water: CH3—(CH2)11—O—(CH2CH2O)z—H(2) In the formula (1), R represents alkyl group, and x and y represent integers which satisfy x+y=5 to 15. In the formula (2), z represents an integer of not more than 9. The performance of initial introduction into a recording head is satisfactory, and it is possible to simultaneously reduce the feathering and the color bleed even when the recording is performed on regular paper.

Abstract: Ink compositions having increased stability and increased jettability with the addition of specific surfactants, including alkyl ether sulfates and ethoxylated mercaptans, are provided. The remainder of the ink composition comprises a suitable carrier vehicle, which typically contains water, alcohols, surfactants, humectants and optionally a resin component.

Abstract: An ink set for an inkjet printer comprises a first ink and at least one second ink. The first ink comprises at least one first colorant, a first media, and at least one first non-ionic surfactant. The first media comprises water. The at least one first non-ionic surfactant has a first HLB (Hydrophilic Lipophilic Balance) value. The at least one second ink comprises at least one second colorant, a second media, and at least one second non-ionic surfactant. The at least one second colorant provides corresponding color of the second ink. The second media comprises water. The at least one second non-ionic surfactant has a second HLB value. The first HLB value is smaller than or equal to the second HLB value.

Abstract: In general, a smear-resistant ink composition according to the present invention comprises: (1) water; (2) at least one glycol selected from the group consisting of diethylene glycol, ethylene glycol, glycerol, and propylene glycol; (3) a pyrrolidone selected from the group consisting of 2-pyrrolidone and 3-pyrrolidone; and (4) at least one colorant that produces a detectable fluorescent color when the ink composition is applied to paper. Preferably, the pyrrolidone is 2-pyrrolidone. In one preferred embodiment, the at least one glycol comprises diethylene glycol and ethylene glycol. In another preferred embodiment, the at least one glycol comprises diethylene glycol, ethylene glycol, and propylene glycol. The composition can comprise other ingredients, such as a basic color stabilizer, a resin, a resin modifier that is a carbonate salt, a biocide, and a nonionic surfactant. The colorants can be formulated to produce a pink, yellow, blue, green, purple, or orange color; other colors are possible.

Abstract: This invention relates to a water-based ink for ink-jet thermal printing containing a surface-active agent having, at a certain concentration, a slow dynamic rearrangement. This surfactant system gives the ink a high surface tension under dynamic conditions which grants greater droplet ejection frequencies with respect to the inks usually employed. At the same time, the ink's low static surface tension value means that it has correct paper wettability properties.

Abstract: A recording method includes a step of ejecting onto a recording material ink having a Ka value of not more than 3 (ml.m?2.msec?1/2), applying to the ink deposited on the recording material processing liquid having a Ka value of not less than 5 (ml.m?2.msec?1/2) to insolubilized a coloring material in the ink inside the recording material; wherein the processing liquid is applied to the ink after rapid swell start point to after penetration of the ink into the medium passes after the ink is deposited on the recording material.

Abstract: For the purpose of providing an ink for inkjet recording that allows substantially bleed-free printing to be performed on plain paper, and particularly recycled paper, and providing an inkjet ink capable of ensuring high print quality and maintaining high ejection stability on plain paper, recycled paper, and coated paper, the present invention provides an inkjet ink comprising, together with a coloring material and water, a nonionic substance that has acetylene bonds in the molecules thereof and that also has hydroxyl groups and/or alkylene oxide repeating structures (preferably a substance whose structure is shown by formula (IA) according to claim 2, a substance whose structure is shown by formula (I) according to claim 20, or the like), and a nonionic substance that has lipophilic units comprising alkyl groups or cycloalkyl groups and that also has alkylene oxide repeating structures (preferably a substance whose structure is shown by formula (IIA) according to claim 2, a substance whose structure is show

Abstract: The present invention relates to an ink composition including water, a solvent, a solvent-soluble dye, and a surfactant, where the ink exhibits a stable liquid microemulsion phase at a first temperature and a second temperature higher than the first temperature and has a conductivity of at most about 200 ?S/cm and a dielectric constant of at least about 60, and methods of making such ink compositions. The present invention also relates to a method of making an ink composition for use in a microelectromechanical system-based fluid ejector. The method involves providing a solution or dispersion including a dye or a pigment and adding to the solution or dispersion an additive which includes a material that enhances dielectric permittivity and/or reduces conductivity under conditions effective to produce an ink composition having a conductivity of at most about 200 ?S/cm and a dielectric constant of at least about 60.

Abstract: To provide a black aqueous ink composition for excellent light and gas fastness, an ink set including the ink composition, and an ink jet recording process using the same, the black aqueous ink composition contains at least a trisazo dye represented by Chemical Formula 31.

Abstract: An ink composition comprising at least one of water-soluble dyes represented by the following formulae (1) to (3) and a surfactant:

Abstract: An object of the present invention is to provide an ink composition for ink jet recording, which can produce high-quality prints and has excellent ejection stability, and to provide an ink set using the same. The ink composition for ink jet recording according to the present invention is characterized by comprising at least a compound represented by formula (I) wherein EO represents an ethyleneoxy group; PO represents a propyleneoxy group; m1, m2, m3, n1, n2, and n3 each are independently 0 (zero) or a natural number of not less than 1; EO and PO may be arranged, regardless of order in the parentheses [ ], randomly or as blocks joined together; and m1+m2+m3+n1+n2+n3 is in the range of 0.5 to 10 in terms of number average of a mixture of compounds represented by formula (I), and a colorant, provided that when, in formula (I), all of n1, n2, and n3 are zero, the ink composition further comprises glycerin.

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: An ink composition for inkjet recording comprising: an azo dye having an aromatic nitrogen-containing 6-membered heterocycle as a coupling component; an aqueous medium; and a surfactant, wherein the azo dye is dissolved or dispersed in the aqueous medium.

Abstract: A novel fluorescent ink is provided which contains at least a coloring material and an aqueous liquid medium for dissolving the coloring material, wherein the coloring material comprises C.I. Acid Red 52 and at least one direct dye, the content of the C.I. Acid Red 52 ranging from 0.1 to 0.4% by weight based on the total amount of the ink, and the content of the direct dye ranging from 0.15 to 0.4% by weight based on the total amount of the ink, and the weight ratio of the direct dye to the C.I. Acid Red 52 is not higher than 1.6. This fluorescent ink is capable of forming prints with fluorescence of high intensity and with high water resistance.

Abstract: Provided is a water-based ink composition for a writing instrument comprising at least a colorant and water, wherein a nonionic high molecular surfactant having an alkylene oxide chain as a hydrophilic group and having an average molecular weight of 3000 to 200,000 is added to the ink composition in a range of 0.1 to 30% by weight. The above nonionic high molecular surfactant has preferably an HLB of 8 or more or a cloud point of 50° C. or higher and includes N-polyoxyalkylene-polyalkylenepolyamine and a polyoxyethylene-polyoxypropylene block polymer.

Abstract: An ink is provided which can realize good images on various recording media, especially plain papers. The ink comprises at least a water-soluble colorant, a water-soluble organic solvent, water, and a mixture of two or more compounds represented by formula (I): R—[(EO)n-(PO)m]k-T wherein EO represents an ethyleneoxy group; PO represents a propyleneoxy group; T represents an OH group or SO3M wherein M represents a hydrogen atom, an alkali metal, an inorganic base, or an organic amine; m and n are each an integer; k is a natural number of not less than 1; and R represents an alkyl or cyclic group.

Abstract: An ink composition comprising at least one color suitable for food use and a liquid vehicle including water and an organic solvent miscible with water in a volumetric ratio variable from 3:1 to 1:10, wherein the organic solvent is ethanol or a mixture ethanol:acetone in a volumetric ratio variable from 1:2 to 3:1; this ink composition is suitable, in particular, even though not exclusively, for surface coloring and printing on supports, wrappings and objects intended for coming into contact with foods.

Abstract: In a ballpoint pen which is formed to have an ink-consumption value per unit area of 0.64 to 1.6 mg/cm2, the surface tension of the ink for the ball point pen is adjusted to a range of 16 to 32 mN/m so that blotting, line splitting and the like hardly occur, that the ink transferred onto the paper surface is ready to be dried and that fluctuation in the density and width of the written lines are less likely to occur due to a storage environment and to a writing condition.

Abstract: This consists in an ink composition containing: a coloring agent, 2-pyrrolidone, a specific surfactant, a butyl ether-based solvent, water, and a water-soluble organic solvent. With the present invention, it is possible to provide an ink composition with which clogging cannot occur, which is of excellent discharge stability, and which affords excellent printing quality by preventing blurring.

Abstract: A water base ink for ink-jet recording contains a dispersible coloring agent, a propylene glycol ether, and a surfactant composed of a random copolymer represented by the following general formula (1):

Abstract: There is provided a water-based ink that gives good coloration and little blurring on regular paper, gives adequate coloration on specialist paper, and has good fixability, and further gives excellent discharge stability with ink jet recording, and moreover exhibits the effect of a chelating agent even in a small amount, and is not harmful due to evaporating, subliming or the like.

Abstract: An ink for use in the ink-jet recording comprising a dye and/or a pigment and water as the indispensable components and a water-insoluble solid content of 1% or more of the whole quantity, the ink further comprising: a nonionic surfactant having polyethylene oxide groups and polypropylene oxide groups, which is a substance having the structure shown by the following structural formula 1; and a number x of the added polyethylene oxide groups and a number y of the added polypropylene oxide groups satisfy the relation that 0<x≦10, and the relation that x/2−1<y<x/3+2, where q and r are respectively the numbers of the methylene groups, and satisfy the relation that 9≦q+r≦11.

Abstract: An ink set comprising at least one anionic chromatic colored ink and at least one cationic chromatic colored ink; and a recording process comprising the step of printing with an ink set comprising at least one anionic chromatic colored ink and at least one cationic chromatic colored ink. The ink set can be suitably used for a printer for inkjet recording or the like.

Abstract: The present invention relates to an ink-jet ink comprising an improved black-to-color bleed control agent in color inks having better decap properties. The improved bleed control agent comprises a multivalent salt of a perchlorate anion. A method of using the ink-jet ink is also provided. The method comprises formulating the color ink-jet ink with the improved bleed control agent and applying the color ink-jet ink adjacent to a black ink-jet ink on a paper substrate. A method of improving decap of an ink set without affecting color-to-black bleed control is also provided.

Abstract: An aqueous ink-jet ink composition for printing on offset media is disclosed comprising an ink colorant, an effective amount of at least one surfactant, and an effective amount of at least one aprotic polar solvent wherein the solvent is comprised of molecules having a molecular weight from 40 to 1500. Optionally, an effective amount of a non-aprotic polar solvent can be added. The aqueous ink-jet inks of the present invention are effective for printing on many commercially available offset papers and other media.

Abstract: Provided is a water based ink composition for a writing instrument comprising at least one of nonionic surfactants comprising polyhydric alcohol fatty acid esters, ethylene oxide adducts of polyhydric alcohol fatty acid esters, ethylene oxide adducts of higher alcohols and alkylphenols, ethylene oxide and propylene oxide adducts of higher alcohols, ethylene oxide adducts of castor oil or hardened castor oil, ethylene oxide adducts of hardened castor oil fatty acid esters and ethylene oxide adducts of higher alkylamines and fatty acid amides and further comprising a colorant, a perfume and water. It is less liable to cause feathering of the lines and has durability of fragrance, in which a perfume is dispersed and retained in an aqueous medium in a stable state.

Abstract: The present invention relates to an ink composition including water, a solvent, a solvent-soluble dye, and a surfactant, where the ink exhibits a stable liquid microemulsion phase at a first temperature and a second temperature higher than the first temperature and has a conductivity of at most about 200 &mgr;S/cm and a dielectric constant of at least about 60, and methods of making such ink compositions. The present invention also relates to a method of making an ink composition for use in a microelectromechanical system-based fluid ejector. The method involves providing a solution or dispersion including a dye or a pigment and adding to the solution or dispersion an additive which includes a material that enhances dielectric permittivity and/or reduces conductivity under conditions effective to produce an ink composition having a conductivity of at most about 200 &mgr;S/cm and a dielectric constant of at least about 60.

Abstract: An ink composition for oil-based ballpoint pens is comprised of a solvent, a colorant and an anti-corrosive wetting agent. The solvent is a water containing water-in-oil-type organic solvent. The colorant is a combination of a dye and a pigment, wherein the pigment is dispersed in the ink with a nonionic surfactant. The anti-corrosive wetting agent is a phosphate based surfactant. An oil-based ballpoint pen using the above ink is also included.

Abstract: A dispersant comprising a polyester chain obtainable by polymerising a hydroxy carboxylic acid or lactone thereof such as E-caprolactone with a cyclic alkylene carbonate such as 5,5-dimethyltrimethylene carbonate. The dispersant may be in the form of a phosphate ester where the polyester chain is reacted with a phosphating agent such as polyphosphoric acid or the polyester chain may be attached to a polyamine or polyimine such as polyethyleneimine.

Abstract: An aqueous ink composition comprising at least: a colorant; water; 0.005 to 10 wt. %, based on the whole weight of the ink composition, of at least one acetylene alcohol compound represented by the following formula (1): wherein R1, R2 and R3 each independently represents a hydrogen atom, an alkyl group which may be branched, or an alkylphenyl group; and a surface active substance capable of causing the acetylene alcohol compound of formula (1) to dissolve in water.

Abstract: An ink composition is manufactured to contain a surfactant having difference d1 (&sgr;10−&ggr;) which is difference between dynamic surface tension (&sgr;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 (&ggr;) 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: Ink additives that reduce the deceleration of inks containing a polymer, such as acrylate binders, are disclosed. In accordance with the invention, an ink-jet liquid, an ink-jet liquid set, and the method for using the same are provided, wherein the one of the liquids comprises an aqueous vehicle, and a deceleration-alleviating component. The present formulations are used to formulate ink-jet liquids, and more particularly, to provide enhanced drop ejection performance in inks containing a polymer, such as deceleration (rapid drop velocity degradation during continuous operation of the firing resistor), when the liquid contains a deceleration-alleviating agent, such as, an aromatic glycol ether, a polar solvent and a long alkyl chain surfactant.

Abstract: Disclosed herein is an ink comprising

Abstract: A coating liquid for forming a transparent topcoat, without requiring a hardening or fixing process that uses heating or UV radiation. The coating liquid imparts light resistance, water resistance, fixation, and glossiness to recordings. Also, a recording method using the coating liquid, and recordings produced thereby. The liquid, which is applied to recorded images, contains at least water, fine polymer particles, and a penetrating agent, preferably a penetrating agent selected acetylene glycol surfactants, acetylene alcohol surfactants, glycol ethers, and 1,2-alkylene glycols. Also, an image recording method for forming an even, transparent coating layer by spraying the coating liquid during an ink jet recording process, as well as recordings produced thereby.