Abstract: An ink-jet ink which includes a coloring composition which contains an oil-soluble dye represented in the following formula (I). In the formula (I), R1 and R2 represent respectively independently a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, or the like. A represents —NR5R6 or a hydroxyl group. R5 and R6 represent respectively independently a hydrogen atom, an aliphatic group, or the like. B1 represents ═C(R7)— or ═N—, and B2represents —C (R8)═ or —N═. R3, R4, R7, and R8 represent respectively independently a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, or the like. Q includes at least one nitrogen atom and, together with a carbon atom to be combined, represents an atom group which is required to form a nitrogen-containing heterocyclic ring having a five-membered ring or more.

Abstract: A set of inkjet inks with at least one of light magenta ink having high lightfastness magenta dye, a light cyan ink having high lightfastness cyan dye, light yellow ink having high lightfastness yellow dye and light black having high lightfastness black dye.

Abstract: Lightfast additives for inkjet inks are provided. These additives exhibit excellent lightfastness of many dyestuffs (both water-soluble and water-insoluble). The lightfast additives exhibit good water solubility and significant effect on dye and pigment molecules which fade most when exposed to UV, ambient light, etc., and are suitable for improving permanence of inkjet inks, including thermal inkjet ink, piezo inkjet ink, and the like. The lightfast additive comprises a molecule which is composed of three parts or moieties: A—X—B, where (a) moiety A is an aryl sulfonic acid or aryl carboxylic acid, either in acid form or salt form, with or without substituents (e.g.

Abstract: The ink composition of the present invention contains a coloring agent, water, a water-soluble organic solvent which is a liquid at least at temperatures of 40° C. or less, and which has a solubility of 1 wt % or greater with respect to water at a temperature of 20° C., and a saturation vapor pressure of 1.7 Pa or less at a temperature of 20° C. (with said organic solvent being contained in the ink composition at the rate of 10 to 35 wt %), and one or more amidine type compounds. As a result, the present invention provides an ink composition, a recording medium, recorded matter and an ink jet recording method that make it possible to obtain images with a high image quality which are superior in terms of the gas resistance of the recorded matter.

Abstract: An ink composition and/or a recording medium are made to contain a compound expressed by general formula (1) and a hydrazide compound. An ink composition thereby obtained does not clog and the ink composition and recording medium thus obtained can offer high quality images that hardly cause yellowing of the resulting recording with superior light resistance. Recording and an inkjet recording method pertaining thereto are also provided.

Abstract: Lightfast additives for inkjet inks are provided. These additives exhibit excellent lightfastness of many dyestuffs (both water-soluble and water-insoluble). The lightfast additives exhibit good water solubility and significant effect on dye and pigment molecules which fade most when exposed to UV, ambient light, etc., and are suitable for improving permanence of inkjet inks, including thermal inkjet ink, piezo inkjet ink, and the like. The lightfast additive comprises a molecule which is composed of three parts or moieties: A-X-B, where (a) moiety A is an aryl sulfonic acid or aryl carboxylic acid, either in acid form or salt form, with or without substituents (e.g.

Abstract: An ink set is provided which can realize images having excellent lightfastness and color reproduction. The ink set comprises magenta ink compositions, the magenta ink compositions containing specific compounds as colorants.

Abstract: An ink jet printing method, comprising the steps of:

Abstract: The present invention provides novel anthrapyridone compounds or salts thereof which have a magenta hue and vividness suitable for inkjet recording and give the recorded material having a high fastness in light fastness and water fastness. That is, the present invention relates to an anthrapyridone compound represented by Formula A-B or the salt thereof, wherein A is the dyestuff residue represented by Formula (1) (in the formula, R1 is hydrogen atom or an alkoxycarbonyl group and R2 is hydrogen atom or methyl group); and B is hydrogen atom or a substituent group on the dyestuff residue A, a water-based magenta ink composition which includes the said compound and an inkjet recording method which uses the said compound.

Abstract: An ink set which comprises a magenta ink and a cyan ink, where the magenta ink comprises a coloring material of general formula (I) and a compound of general formula (II), and the cyan ink comprises a coloring material having a copper phthalocyanine structure and a compound of general formula (II): which can provide color images excellent in light fastness at a mixed color region of the magenta and the cyan inks.

Abstract: An ink set is provided which can bring good lightfastness and can realize images having excellent color reproduction. The ink set comprises a yellow ink composition, two magenta ink compositions different from each other in color density, and two cyan ink compositions different from each other in color density. The ink compositions contain respective specific compounds as colorants.

Abstract: A water-based ink jet ink includes water, N-methylmorpholine-N-oxide co-solvent of the following structure, and at least 0.5 % by ink weight of a dye selected from the reactive, acid, basic or direct dye classes.

Abstract: An ink jet ink for thermal ink jet point-of-sale printers is provided, comprising: (a) a vehicle comprising (i) 5 to 10 wt % of a drying agent selected from the group consisting of 1,2-hexanediol and 1,2-pentanediol, (ii) 15 to 32 wt % 2-pyrrolidone, (iii) 15 to 37 wt % of at least one humectant, and (iv) the balance water; (b) 0.5 to 10 wt % of a water-soluble dye; and (c) 0 to 3 wt % comprising buffers, corrosion inhibitors, surfactants, biocides, polymers, pigments, and binders, with the proviso that the total amount of surfactants is 0.1 wt % or less, based on the total ink composition. In particular, the ink jet ink is employed in combination with a printhead having a nickel orifice plate through which droplets of the ink are expelled onto a print medium. The ink jet ink composition is environmentally friendly, reliable, and fast drying, on the order of 300 msec and less. Further, the ink composition exhibits minimal puddling on the nickel orifice plate, leading to improved print quality.

Abstract: An ink, such as an inkjet ink composition is described which contains at least one colorant, at least one liquid vehicle, at least one humectant, and at least one cyclic amide. Methods to improve the resistance to highlighter smear, minimize banding of a printed image, improve the dry or wet rub resistance of a printed image, and/or improve the waterfastness of a printed image using the ink compositions of the present invention are further described.

Abstract: An infrared dye, characterized in that the dye comprises a compound that comprises a molecule that can be described by claim 1.

Abstract: A water-based ink jet ink includes water, N-methylmorpholine-N-oxide co-solvent of the following structure, 1

Abstract: A waterfast, environmentally friendly ink-jet ink, is disclosed comprising from 1% to 90% by weight of a first humectant selected from the group consisting of glycerol, propanediol, and combinations thereof; from 1% to 25% by weight of a second humectant selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, and combinations thereof; from 1% to 20% by weight of a drying agent selected from the group consisting of 1,2-hexanediol, 1,2-pentanediol, and combinations thereof; from 0% to 20% by weight of 2-pyrrolidone; from 0.05% to 10.0% by weight of a waterfastness control dye selected from the group consisting of azo-containing dyes and phthalocyanine-containing dyes; and at least one additional dye present at from about 1.0% to 10.0% by weight. If the waterfastness control dye is an azo-containing dye, such dyes can include Direct Red 227, Direct Red 254, Direct Yellow 86, and Acid Orange 7.

Abstract: New dioxazine compounds and mixtures thereof containing sulphonic acid groups according to formula (I) in which the substituents have the meanings given in claim 1, processes for their production and the use of such compounds for dyeing or printing organic substrates or as a component of printing inks.

Abstract: The use of lithium as a cation for an anionic dye to enhance the light-fastness of the dye. Also claimed are the lithium salts of certain anionic dyes as defined in the description; mixed lithium/sodium salts of an anionic dye wherein the molar ratio of lithium to sodium is from 1:4 to 99:1 and at least 20 mole % of the total counter ions in the dye are lithium cations; inks containing the dyes; a method of ink jet printing using the inks; a substrate printed with the inks; an ink jet printer cartridge containing the ink and a ink jet printer containing the ink jet printer cartridge.

Abstract: An ink composition for ink-jet printers is provided which includes a chromophore, a solvent, a co-solvent, a humectant, a surfactant, a viscosity adjuster and an additive, wherein the additive is a nitrogen-containing heterocyclic compound having formula: 1

Abstract: A photochromic grey coloring 2H-naphtho[1,2-b]pyran of formula (1) wherein R1 is selected from mono-, di- or poly-substituted aryl groups, mono-, di- or poly-substituted naphthyl groups and mono-, di- or poly-substituted heteroaryl groups, wherein at least one substituent is a nitrogen containing group, including amino, C1-C20 and C6-C20 alkylamino, C1-C20 and C6-C20 dialkylamino, C2-C20 dialkenylamino, C2-C20 or C4-C20 di(polyalkenyl)amino, arylamino, diarylamino, C1-C20 alkylarylamino, tetra (C1-C10 linear or branched alkyl) guanidino and cyclic-amino groups and at least one of R7 and R9, which may be the same or different, is selected from C1-C20 N alkylamino C1-C20 N-alkylamido, C1-C20 N,N-dialkylamido, amido, nitro, amino, C1-C20 alkylamino, C1-C20 dialkylamino, C2-C20 dialkenylamino, C4-C20 di(polyalkenyl)amino, arylamino, diarylamino, C1-C20 alkylarylamino, or cyclicamino groups.

Abstract: The present invention provides an ink set, an ink jet recording apparatus, an ink jet recording method, a recording unit, and an ink cartridge, which can produce ink jet color images in which the color balance does not easily become unstable even if the image is stored for a long time, and in which the color images have greater durability so that degradation of the visual appearance is not easily recognizable even if the image is stored for a long time. The ink set includes a first aqueous ink and a second aqueous ink having the same color tone, the second ink having a lower coloring material content than that of the first ink, and the degree of fading of an image produced with the second ink is the same as or lower than that of an image produced with the first ink.

Abstract: An aqueous ink comprising at least a colorant, a water-soluble organic solvent and a compound represented by general formula (I) shown below, wherein said water-soluble organic solvent stays liquid at a temperature of not higher than 40° C., exhibits a water solubility of not lower than 1% by weight at a temperature of 20° C. and a saturated vapor pressure of not higher than 1.7 Pa at a temperature of 20° C.

Abstract: A recording liquid for ink jet containing a solid fine particle dispersion obtained by dispersing in a medium a compound represented by the following general formula (I) or (II), and an ink jet recording method of recording using the recording liquid for ink jet containing the solid fine particle dispersion obtained by dispersing in a medium a compound represented by the following general formula (I) or (II): 1

Abstract: The present invention is directed to methods of making subphthalocyanine compounds. The methods of the present invention may be used to produce known subphthalocyanine compounds, as well as, a new family of subphthalocyanine compounds. The methods of the present invention may employ environmentally-friendly solvents, which donate a hydrogen atom for use in the reaction mechanism. The methods of the present invention produce subphthalocyanine compounds at a yield of greater than about 50%, and even greater than about 94%. The present invention is further directed to subphthalocyanine compounds having improved lightfastness. The subphthalocyanine compounds may have a Subphth-Lightfastness Test Value of less than 15%.

Abstract: An ink-jet ink comprising a coloring composition including an oil-soluble dye represented by general formula (I) below.

Abstract: A dye and a recording material employing the dye are disclosed. The dye is represented by formula B═N—A In the formula, A represents a metal-free atomic group necessary to form a condensed ring having —NR1R2 as a substituent on the ring, except for one ring in which a carbon atom on the ring combines with the nitrogen atom in the formula. B represents a coupler component and combines with a nitrogen atom in the formula at coupling position of the coupler component. R1 and R2 each independently represents a hydrogen atom, an alkyl group which may have a substituent, an aryl group which may have a substituent, and a heterocycle which may have a substituent, and R1 and R2 may combine with each other to form a ring.

Abstract: Magenta ink exhibiting excellent coloration on various recording materials is provided according to the present invention. The magenta ink can realize high image densities and can produce images having superior light resistance. The magenta ink contains first and second coloring materials represented by the following general formulae 1 and 2, respectively, and a water-based medium.

Abstract: Water-based ink-jet ink compositions and a method of making them, the compositions being miniemulsions, i.e., an aqueous vehicle containing oil particles with dissolved dye molecules, the oil particles having a diameter below 1 &mgr;m.

Abstract: An ink-jet ink which comprises a dye dispersed product, an oil-soluble dye being dissolved in a high boiling point organic solvent which has a boiling point of 150° C. or more and has a specific inductive capacity at 25° C. of 3 to 12, the oil-soluble dye is emulsified and dispersed in a water-based medium, and the dye dispersed product is formed. Further, a method of manufacturing an ink-jet ink, in which an oil-soluble dye is dissolved in a high boiling point organic solvent which has a boiling point of 150° C. or more and has a specific inductive capacity at 25° C. of 3 to 12, and the oil soluble dye is emulsified and dispersed at a pressure of 50 MPa or more using a high-pressure emulsifying and dispersing device.

Abstract: An ink-jet ink which includes a coloring composition which contains an oil-soluble dye represented in the following formula (I). In the formula (I), R1 and R2 represent respectively independently a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, or the like. A represents —NR5R6 or a hydroxyl group. R5 and R6 represent respectively independently a hydrogen atom, an aliphatic group, or the like. B1 represents ═C(R7)— or ═N—, and B2represents —C (R8)═ or —N═. R3, R4, R7, and R8 represent respectively independently a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, or the like. Q includes at least one nitrogen atom and, together with a carbon atom to be combined, represents an atom group which is required to form a nitrogen-containing heterocyclic ring having a five-membered ring or more.

Abstract: Compounds of formula (I) wherein A is hydrogen or a descretionary radical, a novel process for their preparation and their use for the dyeing of organic substrates.

Abstract: Compounds of formula (I) with the meanings of R1, R1′, R2, R2′, X, X′, Y, Y′, m and n as given in claim 1 can be used as paper dyes or direct dyes or for the preparation of ink-jet inks.

Abstract: The present invention relates to a textile ink-jet printing-purpose disperse dye micro-emulsion agent, which uses dispersing agents such as sodium polynaphthalene formaldehyde sulfonates, surfactants such as POE NP ether, and silicone derivative emulsion-type defoaming agents and bactericidal fungicidal agents for ink-jet CMYK four-color disperse dyes forming a stable dye micro-emulsion through micro-jetting homogenized emulsifier. This invention focuses on the disperse dyes suitable for polymers, applying a low-cost environmentally protective micro-emulsion agent in the ink protection technology so that the O/W model becomes a stable and homogenized system. This gives the textile ink-jet printing-purpose disperse dye micro-emulsion agent, with a dye particle diameter lying below 300 nm and high storage stability, rinse, sublimation, and light fastness over 4.

Abstract: The invention is concerned with compounds according to the formula (I) and salts thereof, or a mixture of such compounds or salts. These compounds are useful as fiber-reactive dyestuffs in dyeing and printing hydroxy-group-containing and nitrogen-containing organic substrates.

Abstract: Color images with high fixation comparable to that of silver salt photographic images are formed on printing papers, using aqueous ink compositions by ink jet recording. Color images thus formed have high saturation and high resolution. An intercalated compound capable of fixing water-soluble dyes to a printing paper due to the intercalation based on ion-exchanging between them is incorporated into the dye-receiving layer 2 of the paper, on which color images are formed by ink jet recording using an aqueous ink composition containing a water-soluble dye. The content of the intercalated compound in the layer 2 is from 10 to 90% by weight. As the intercalated compound, montmorillonoids are preferred when water-soluble cationic dyes are used while hydrotalcite-group minerals are preferred when water-soluble anionic dyes are used. FIG. 1 is selected.

Abstract: An ink jet ink composition comprises a color dye, a polymer, at least one water soluble organic solvent, and at least one ammonium salt for enhancement of waterfastness. The ink preferably comprises 1-10% ethoxylated polyethyleneimine to which is added 1-8% N-methyl-pyrrolidone, and up to 1% of the ammonium salt, to increase the waterfastness of the ink to a level greater than 70%.

Abstract: Compounds of the formula (I) in which the substituents are as defined in claim 1 are valuable colorants for the mass coloring of polymers, with fluorescence property, in electrophotographics toners and developers, in powders coating materials and ink-jet inks.

Abstract: An ink composition is provided which can realize printing with excellent fixation even on a coated paper having a smooth surface. Further, an ink composition is also provided which, when used in ink jet printing, causes neither clogging nor creation of a precipitate. A copolymer of butyl acrylate, methyl methacrylate, and acrylic acid is added to an ink composition.

Abstract: A compound of the Formula (1) and salts thereof: wherein: Ar, Ar1, J, J1, X, X1 W, W1, L and m are as defined in the description. The compounds of Formula (1) are useful as additives in inks, especially ink jet printing inks, for reducing color bleed between adjacent printed regions. Also claimed are inks containing a compound of the Formula (1), a method of ink jet printing using the inks, a substrate printed with the ink and an ink jet printer cartridge containing the ink.

Abstract: Water-fastness in aqueous ink-jet inks containing water-soluble dyes is achieved by using a specific ionic species having a charge opposite to that on the dye molecule. Anionic dyes typically contain sulfonate (or carboxylate) anionic groups. Using at least one specific ionic species of opposite charge, specifically, phosphonium salts, causes the colorant components to “crash” or precipitate out of the water-based ink onto the print medium due to the formation of a suitable charge complex between the ionic parts of the dye and the opposite charge of the counter-ion species. Other positively charged salts, such as quaternary ammonium salts, carbonium salts, iodonium salts, sulfonium salts, and pyrillium salts may be used to improve aqueous dispersion stability and thus printability. Such additional cationic salt partially replaces the phosphonium salt(s).

Abstract: 1. An ink comprising water, a water-dissipatable polymer and a dye, wherein the dye carries a group of the Formula (1): wherein: R1 is optionally substituted branched chain alkyl; and R2 is H, optionally substituted alkyl or optionally substituted aryl. The inks are useful in ink jet printers.

Abstract: A method of forming a printing ink, the method including combining a nitrogen-containing cyclic organic compound, a glycol ether or a glycol ether acetate, and a colorant; and homogeneously blending the nitrogen-containing cyclic organic compound, the glycol ether or the glycol ether acetate, and the colorant to form the ink jet printing ink.

Abstract: Disclosed is an ink composition which comprises (a) water, (b) a colorant; and (c) an additive selected from the group consisting of diamido quaternary dialkyl ammonium salts, bitail quaternary tetraalkyl ammonium salts, bitail imidazolium salts, bitail biomimetic phospholipid salts, specific bisquaternary salts, &bgr;-hydroxyethyl ethylene diamine fatty acids, specific polyammonium salts, ethoxylated polyamine compounds, biquaternary pyridinium salts, aminofunctional polyorganosiloxanes, and mixtures thereof.