Abstract: An ink jet ink set, at least has a cyan ink, a magenta ink, and a yellow ink, in which the cyan ink contains at least either one of C.I. Acid Blue 9 or C.I. Direct Blue 199, the magenta ink contains at least either one of C.I. Acid Red 249 or C.I. Reactive Red 141, the yellow ink contains at least either one of C.I. Direct Yellow 86 or C.I. Direct Yellow 132, and the cyan ink, the magenta ink, and the yellow ink all contain an alkylene oxide adduct of acetylene glycol having 12 or more carbon atoms in the main chain, acetylene glycol having 10 or more carbon atoms in the main chain, and polyoxy alkylene alkyl ether.

Abstract: The present invention relates to dyes of the formula (I) in which R1 to R10, D1 and D2 are defined as given in claim 1, a process for preparing them, and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.

Abstract: An ink composition for used in an inkjet printer is provided. The ink composition includes a carrier medium, a colorant, and a silicon doping agent. The silicon doping agent may include silicic acid, silicon dioxide, or silicates. This silicon-doped ink reduces and prevents the etching of the silicon based components of the printhead. Silicon-doped inks protect the printhead from damage, thus improving printhead reliability and increasing printhead service life.

Abstract: A thermal ink jet ink composition includes one or more volatile organic solvents, one or more solvent dyes, and one or more humectants. The one or more volatile organic solvents are selected from C1-C4 alcohols, C4-C8 ethers, C3-C6 ketones, C3-C6 esters, and mixtures thereof. The one or more solvent dyes are soluble in the organic solvent or solvents with a solubility of at least 0.1% by weight. The thermal ink jet ink composition is free or substantially free of tetrahydrofuran, binder resin, and water.

Abstract: The present invention relates to dye mixtures which comprise at least one dye of the formula (I) and at least one dye of the formula (II) in which R1, R2, R3, and X are defined as stated in claim 1, to processes for their preparation, and to their use.

Abstract: The present invention relates to a modified colorant comprising a colorant having attached at least one organic group. Various embodiments of the organic group are disclosed. For each of these embodiments, preferably the organic group has a defined calcium index value. Also disclosed are various uses for these modified colorants, including inkjet ink compositions.

Abstract: An inkjet printer includes: an inkjet printhead having an exposed corrodible structure containing silicon nitride, borophosphosilicate glass (BPSG) or silicon oxide; and an ink reservoir containing said ink which is in fluid communication with said printhead. The ink includes: water; a dye; and a metal additive for minimizing corrosion of the exposed structure.

Abstract: The present disclosure provides inkjet inks and associated methods and systems. In one example, an inkjet ink can comprise an ink vehicle and a colorant, wherein the ink vehicle includes an organic co-solvent, water, and from 0.0001 wt % to 0.1 wt % dextran based on the inkjet ink as a whole.

Abstract: The present invention relates to colored reflective features, e.g., reflective security features or reflective decorative features, that optionally exhibit color shifting and to inks and processes for making such features. The features, as well as the inks optionally used to form the features, comprise nanoparticles and a colorant that preferably modifies a spectrum of light that is reflected by a reflective layer formed from the nanoparticles. The processes involve forming the features from one or more inks using a direct write printing process.

Abstract: A production method of an aqueous pigment dispersion liquid of the present invention includes: a kneading step of kneading a mixture including (a) C. I. pigment violet 23, (b) a styrene-acrylic acid-based copolymer with an acid value of 50 to 300 mgKOH/g, (c) an alkali metal hydroxide, (d) water, and (e) a wetting agent, thereby producing a colored, kneaded material; and a dispersion step of dispersing the pigmented, kneaded material in an aqueous medium by using a dispersing machine with media, wherein the mass ratio of (b)/(a) in the kneading step is within a range of 0.15 to 0.45, the mass ratio of (d)/(a) in the first half of the kneading step is within a range of 0.04 to 0.42, and the change in viscosity of materials to be dispersed in the dispersion step is 10% or lower.

Abstract: Solvent-based inkjet ink formulations including an organic solvent, a resin, a surfactant, and a colorant are provided. The inks have many desirable attributes such as extended decap time.

Abstract: The ink compositions comprise at least one solvent, at least one colorant, and at east one oil, and may be delivered from any of a variety of writing instruments including but not limited to ball pens, fountain pens, felt tip pens, and markers.

Abstract: Exemplary embodiments provide a phase change ink composition including at least a first semi-crystalline material having a high amorphous content; and at least a second semi-crystalline material having a high crystalline content, such that the phase change ink has a viscosity ranging from about 0.1 cps to about 15 cps at a temperature ranging from about 60° C. to about 145° C. and the phase change ink composition has excellent robustness when forming images or printing on a printing substrate.

Abstract: A method that includes applying a color enhancing composition to a substrate and drying the color enhancing composition, where the color enhancing composition includes a carrier fluid; chromatically selective scattering particles having a particle size distribution as measured by (weight average diameter)/(number average diameter) of less than or equal to 1.1; and an absorber of visible light.

Abstract: Disclosed is a reactive dye ink exhibiting excellent ejection stability when used in a printer having an inkjet head for commercial use which requires a high-viscosity ink. The reactive dye ink has excellent storage stability and excellent fixability to textiles. Specifically disclosed is an ink composition containing at least one reactive dye serving as a coloring matter, which also contains water and a compound represented by formula (1) and having an average molecular weight of 340-2,200. (1) [In the formula, X1, X2, X3 and X4 independently represent a hydrogen atom or a methyl group; and the sum of j, k, m and n is a number not less than 4 but not more than 40.

Abstract: A dual color electronically addressable ink includes a non-polar carrier fluid; a first colorant of a first color; and a second colorant of a second color that is different than the first color. The first colorant includes a first particle core, and a first functional group attached to a surface of the particle core. The first functional group is capable of carrying a positive charge and is chosen from a base or a salt of the base. The second colorant includes a particle core, and a second functional group attached to a surface of the particle core. The second functional group is capable of carrying a negative charge and is chosen from an acid or a salt of the acid. The ink further includes an additive chosen from polyhydroxystearic amide salt, polyhydroxystearic acid, aromatic butyric acid, and combinations thereof.

Abstract: A phase change ink composition comprising a wax; an optional colorant; and a modified polysaccharide salt.

Abstract: A solid ink composition suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the solid ink composition comprises both a crystalline compound and an amorphous compound, and a fatty acid, which provides for a robust ink wherein the phase change ink crystallizes faster from the liquid state than the same composition without the fatty acid.

Abstract: A solid ink composition suitable for ink jet printing, including printing on coated paper substrates. In particular, the solid ink composition comprises a crystalline compound, an amorphous compound, and an inorganic nucleating agent, which provides for a robust and fast printing ink.

Abstract: A document uses a chemically reactive security ink to facilitate security, making it more difficult to alter a genuine security document. The chemically reactive security ink masks a warning word or message on a security document. The hidden warning word or message is revealed when the document is subjected to chemical washing.

Abstract: The invention relates to an aqueous magenta inkjet ink composition for use in ink jet printers comprising a mixture of a self-dispersed magenta pigment surface modified with functional group and a xanthene dye. The magenta ink of the present invention also contains an aqueous carrier, a polymeric additive, a surfactant, and a specific cosolvent mixture selected from the group consisting of a C2-C8 terminal alkanediol, cyclic amide compound and its derivative, trihydric alcohol and mixtures thereof. Preferably, the magenta pigment is surface modified with bisphosphonate or sulfonate group, most preferably bisphosphonate group. The magenta inkjet ink demonstrates excellent stability, good chroma and maintenance characteristics and high heater reliability in permanent and semi permanent printheads. The ink also reduced post print paper curl without sacrificing print quality.

Abstract: A phase change ink composition comprising an amorphous compound and a crystalline compound capable of crystallizing at a total crystallization time of less than 15 seconds and methods of making the same.

Abstract: The object of the invention is to provide an inkjet recording oil green ink composition that excels more in terms of all the quality of prints, stability on printing, the ability of prints to be dried, and ink storage stability, and is capable of making wider a color reproduction area expressed by yellow and cyan. The inkjet recording oil green ink composition contains as an organic green pigment coloring agent C. I. Pigment Green 58 comprising a (poly) halogenated zinc phthalocyanine. The invention also provides an ink set comprises the inventive oil green ink composition and further includes at least an oil yellow ink composition and an oil cyan ink composition.

Abstract: A radiation curable ink composition has improved adhesion towards rigid recording media, good jetting behavior and no or minimal health and safety risks. The radiation curable ink has a viscosity of 30 mPa·s, or less, at 50° C.

Abstract: A conductive ink includes metallic nanoparticles, a polymeric dispersant, and a solvent. The polymeric dispersant may be ionic, non-ionic, or any combination of ionic and non-ionic polymeric dispersants. The solvent may include water, an organic solvent, or any combination thereof. The conductive ink may include a stabilizing agent, an adhesion promoter, a surface tension modifier, a defoaming agent, a leveling additive, a rheology modifier, a wetting agent, an ionic strength modifier, or any combination thereof.

Abstract: Disclosed herein are irreversible thermochromic ink compositions including a volatile color activator and a color change dye capable of becoming substantially colorless upon evaporation of the volatile color activator. The volatile color activator and the color change dye can be, optionally, encapsulated. Written marks made with the thermochromic ink compositions can be subjected to a force directing component, which can include generating heat and/or friction, to evaporate the volatile color activator, thereby causing the color change dye to become substantially colorless.

Abstract: A printing method that uses ink jet recording with a water-based ink set to form an image on a non-ink-absorbing or low-ink-absorbing recording medium, the method includes a printing step including recording with a color ink and recording with a resin ink performed after the recording with the color ink; and a drying step performed during the printing step and/or after the printing step. In the printing method, the water-based ink set includes the color ink containing a water-insoluble coloring agent and the resin ink not containing a coloring agent. The color ink contains the water-insoluble coloring agent, a resin component, a water-soluble solvent, and a surfactant. The resin ink contains a water-soluble resin solvent, a wax, and thermoplastic resin particles as a resin component that are insoluble in water but compatible in the water-soluble resin solvent.

Abstract: In an inkjet recording system using an ink in which a coloring material is dispersed in a solvent with a dispersing agent, printing density is improved by causing aggregation of the coloring material contained in the ink that has been ejected onto a printing medium. In an inkjet printing method, printing is performed by ejecting one of first and second inks onto a printing medium, and then successively ejecting the other ink so as to overlay it on the one ink. The first ink includes a first solvent, a coloring material, and a dispersing agent. The second ink includes at least a second solvent capable of changing solubility of the dispersing agent to cause aggregation of the coloring material when it is mixed with the first ink. For example, when one of the first and second solvents includes a water-insoluble organic solvent, the other can include a water-soluble organic solvent.

Abstract: An ink set includes at least two aqueous inks A and B with different colors, the inks A and B used in an inkjet recording method in which the inks A and B are superimposed for formation of a color image, wherein the ink A contains water-dispersible colorant A1 free of a surfactant-based dispersant, and anionic compound A2, and wherein the ink B contains water-dispersible colorant B1 containing a surfactant-based dispersant.

Abstract: A composition for coating or printing on a substrate, comprising a liquid vehicle and a water soluble branched polyethyleneimine comprising amino groups which have been alkylated or hydroxyalkylated, wherein the branched polyethyleneimine prior to alkylation or hydroxyalkylation comprises a combination of primary, secondary, and tertiary amino groups, and wherein at least 1% of the primary amino groups of the polyethyleneimine polymer are alkylated or hydroxyalkylated with at least one alkyl or hydroxyalkyl group having at least 4 carbon atoms.

Abstract: UV or EB curing ink compositions for screen printing which contain a remarkably high amount of an epoxidized vegetable or animal oil as sustainable material and a reactive diluent.

Abstract: The present invention provides an ink composition for use in inkjet recording, the ink composition including one of water-soluble dye and water in an amount of from 20% to 40% by mass, which is capable of recording an image that is suppressed in the variation of image density immediately after printing.

Abstract: The present invention provides an inkjet ink which is excellent in image quality and high-speed printing on plain paper, in storage stability and in ejection stability and gives less load on a maintenance device for an inkjet recording apparatus; and an ink cartridge, an inkjet recording apparatus, and an inkjet recording method, using the inkjet ink. An inkjet ink containing a water dispersion of pigment-containing water-insoluble vinyl polymer particles; a water-soluble organic solvent; and water, wherein an ink residue from the inkjet ink has a viscosity of 3,000 mPa·s or less, the ink residue is obtained by leaving the inkjet ink to stand at a temperature of 25° C. and a humidity of 15% until substantially no mass change occurs, and wherein the inkjet ink, pH of which is adjusted to 7 with an acid, has a viscosity of 500 mPa·s or more.

Abstract: The present invention relates to azo dyes of the formula (1) in which R, M, and Y are defined as stated in claim 1, to dye mixtures comprising them, to processes for preparing them, and to their use.

Abstract: A liquid droplet discharge apparatus includes a head member. The head member is provided with a nozzle surface, a plurality of nozzle arrays including a first nozzle array and a second nozzle array is arranged on the nozzle surface, the nozzle array includes a plurality of nozzle holes which are arranged in a predetermined pattern, the first nozzle array discharges a pigment ink which contains water and a pigment, the second nozzle array discharges a dye ink which contains water and a dye, and the relationship between the conductivity [E1 (mS/cm)] of the pigment ink and the conductivity [E2 (mS/cm)] of the dye ink is expressed by the formula 0<(E2?E1)?3.

Abstract: The present invention provides an ink-media set, record printed by use of the ink-media set, an inkjet printing method, and an inkjet printing apparatus which includes ink that has at least water, dye, and humectant and surface tension thereof is 20 to 35 mN/m at 25° C., a support, and a recording medium having the support and at least one surface thereof has a coating layer wherein transfer rate of the ink to the recording medium measured by a dynamic scanning absorptometer in 100 ms of contact time is 4 to 15 ml/m2 and transfer rate of the ink to the recording medium measured by a dynamic scanning absorptometer in 400 ms of contact time is 7 to 20 ml/m2.

Abstract: The present invention relates to inkjet inks having improved compatibility with high resolution nozzle plate materials such that the inkjet inks resist clogging nozzles and flooding upon jetting. The inkjet ink includes one or more colorants, at least three co-solvents comprising about 18% to about 24% of the composition of the ink by weight, a penetrant, at least one wetting agent, and water.

Abstract: Dye-based gray ink formulations, ink-jet ink sets, and methods of making a dye-based gray ink formulation, are disclosed.

Abstract: A solid ink composition comprising an amorphous component, a crystalline material, and optionally, a colorant, which are suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the solid ink formulation comprises a blend of amorphous and crystalline components which provides a solid ink with excellent rheological properties and robustness when forming images or printing on coated paper substrates.

Abstract: A solid ink composition comprising an amorphous component, a crystalline material, and optionally, a colorant, which are suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the amorphous component is synthesized from an esterification reaction of citric acid.

Abstract: A compound for spacing nonlinear optical chromophores of the Formula I and the commercially acceptable salts, solvates and hydrates thereof, wherein R1, R2, R3, R4, W, X, Y, Z, Q1, Q2, Q4 and L have the definitions provided herein.

Abstract: Disclosed herein is a method of preparing a solid ink composition, comprising the steps of: reacting 15-25 parts by weight of base oil including coconut oil, palm oil and castor oil and 40-60 parts by weight of aliphatic organic acid of 10 to 20 carbon atoms with 7-15 parts by weight of a caustic soda solution (concentration: 40%) to saponify the base oil and to change the aliphatic organic acid into sodium salt thereof; mixing 3-10 by weight of glycerin, 10-20 by weight of ethanol, 0.1-1.0 by weight of a dye and 1-10 by weight of silica with the reaction product and then melting the mixture at 70-80° C.; and cooling the molten mixture. The solid ink composition prepared by the method is very transparent, and has excellent miscibility and stability because it is easily mixed with a water-soluble dye or a water-soluble fluorescent dye.

Abstract: The present disclosure provides an ink jet ink including a dye, a vehicle, and a surfactant combination having: (a) an acetylene alcohol having the generic structure: wherein R and R1 are C1-C10 linear or branched alkyl groups or hydrogen, and wherein only one hydrogen on either R or R1 is replaced by a hydroxy group; and (b) a siloxane surfactant having the generalized structure wherein E is —CH3 or —O—Si(CH3)3, provided that E is —CH3 when x is greater than 0; EO is ethylene oxide, PO is propylene oxide, G=-CH2—, or —CH2—CH2—CH2—, x, y, and z are independently about 0 to about 40, and wherein the acetylene alcohol is present in the amount of at least about 0.3%, and the siloxane surfactant is present in the amount of at least about 0.03 to about 0.5 percent, based on the weight of the ink composition. The inks provide good color on a range of media and can be loaded into used inkjet pens without volume reduction.

Abstract: The present invention relates to cyan dye-based inkjet inks having improved permanence when jetted onto porous photo media. The inkjet ink includes a copper phthalocyanine dye having sulfonylamine groups, at least three co-solvents having about 18% to about 24% of the composition of the ink by weight, a polymeric dye dispersant having about 0.5% to about 2.0% of the composition of the ink by weight, a penetrant, at least one wetting agent, and water.

Abstract: The present disclosure relates to ink-jet ink compositions, systems, and/or methods including a yellow ink, a magenta ink and a cyan ink for producing ink-jet printed matter having desirable color balance (e.g., difference in percent residual optical densities (ODs) between individual colors) and/or color retention (e.g., percent residual OD) following contact with water. For example, the absolute value of the difference in a percent residual OD of an image produced in accordance with some embodiments of the disclosure may be less than about 20%. The percent residual OD of an image produced in accordance with some embodiments of the disclosure may be more than about 40%.

Abstract: An ink set for ink-jet recording which includes multiple inks having different colors. Each of the multiple inks includes a colorant, a water-soluble organic solvent, a fluorine-based surfactant, and water. The viscosity difference among the multiple inks is 2.0 mPa·s or less at a temperature of 25° C. and a shearing speed of 230 1/s, and the viscosity difference among the multiple inks is 0.5 mPa·s or less at a temperature of 25° C. and a shearing speed of 100,000 1/s.

Abstract: Nutritional or ingestible ink composition for ink jet printing comprising: a binder comprising at least 0.5% by weight, with respect to the total weight of the ink, of at least one zein; a solvent comprising at least 10% by weight, with respect to the total weight of the ink, of one or more nutritional or ingestible solvent(s); and at least 0.1% by weight, with respect to the total weight of the ink, of one or more nutritional or ingestible dye(s) and/or pigment(s). Dispersion of particles of at least one pigment in at least one polar solvent comprises at least one zein as dispersing agent to facilitate the dispersing of particles and stabilize the dispersion. A process for marking a substrate, in particular a foodstuff, by ink jet printing with the foregoing composition and substrate, for example eggshell, provided with such a marking.

Abstract: The embodiments described herein relate to photosensitizer dyes for dye-sensitized solar cell (DSSC) devices. In one example, a series of photosensitizer dyes for DSSC devices that have a high absorption coefficient and conversion efficiency, lower cost and better safety, are provided. The photosensitizer dyes are porphyrin-based zinc (Zn) complexes.

Abstract: Fluorescent organic nanoparticles and a process for producing fluorescent organic nanoparticles having a size of less than about 500 nanometers comprising a polymeric matrix comprising one or more crosslinked polymer resins, and comprising one or more fluorescent dyes incorporated into the polymer matrix.

Abstract: A monoazo pigment is represented by the general formula (1), a tautomer of the monoazo pigment, and a salt or a hydrate thereof: in which R1, P1, and Q1 each independently represents a hydrogen or a substituent, G represents the non-metallic atoms necessary to complete a 5- to 6-membered heterocyclic group, W represents a substituent capable of binding to the heterocyclic group constituted by G, t represents an integer of from 0 to 5, Het-1 represents a group selected from the aromatic heterocyclic groups represented by the general formula (2) as recited in the claims and disclosure of the invention.