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: A thermal ink jet ink composition include a volatile organic solvent, a binder resin, a dye, a humectant in an amount less than 40% by weight of the thermal ink jet ink composition, and an additive for extending the decap time. The additive is present in an amount greater than 0.1% by weight of the thermal ink jet ink composition. The additive is selected from plasticizers, surfactants, aliphatic hydrocarbons, drying oils and mixtures thereof. The additive does not phase separate from the ink jet composition during application of the ink to a substrate in thermal ink jet printing.

Abstract: Disclosed is a phase change ink comprising a phase change ink carrier and a colorant compound of the formula wherein X1, X2, and X3 each, independently of the others, is —O—, —S—, —SO—, or —SO2—; R1, R2, and R3 each, independently of the others, is alkyl, aryl, arylalkyl, or alkylaryl as further defined herein; and Z is halogen, —OR4, wherein R4 is alkyl, aryl, arylalkyl, or alkylaryl as further defined herein, wherein R5 is alkyl, aryl, arylalkyl, or alkylaryl as further defined herein, or wherein R6 is alkyl, aryl, arylalkyl, or alkylaryl as further defined herein.

Abstract: [Problem to be solved] A non-aqueous ink, which has excellent pigment dispersion stability and can achieve reduction or elimination of print-through, thereby achieving high print density, is disclosed. [Solution] The non-aqueous ink contains at least a pigment and an organic solvent, wherein the organic solvent contains a five-membered heterocyclic compound having a C?O bond in an amount of 50 mass % or more of the organic solvent, and the content of a polymer component in the ink is 20 mass % or less relative to the pigment.

Abstract: A compound of the formula wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are each independently selected from a member of the group consisting of hydrogen, alkyl, aryl, arylalkyl, alkylaryl, straight-chain hydrocarbon, branched-chain hydrocarbon, halogen, and mixtures thereof; wherein X1, X2, X3, X4, and X5 are each independently selected from a member of the group consisting of hydrogen, alkyl, aryl, arylalkyl, alkylaryl, alkoxyl, aryloxy, straight-chain hydrocarbon, branched-chain hydrocarbon, halogen, and mixtures thereof; and wherein the compound can optionally be a mixture of cis and trans isomers wherein only one of R1 to R10 is a non-hydrogen group.

Abstract: A phase change ink composition including an amorphous compound; a crystalline compound; an optional synergist; an optional dispersant; and a white colorant having a volume average particle size of from about 25 nanometers to less than 200 nanometers.

Abstract: An ink containing a plurality of organic pigments having hues forming an angle of 10 degrees or more with one another, wherein the bronze value B calculated by Formula 1 is 0.0 or more, and 12.0 or less, the saturation value C calculated by Formula 2 is 65.0 or more, and the 20-degree gloss value GB is 30.0 or more with respect to a predetermined recorded image recorded by the ink.

Abstract: The present invention relates to a pigment composition containing a pigment and chondroitin sulfate or its salt, in which a content of chondroitin sulfate or its salt is equal to or larger than 0.1 part by weight (pbw) over 1 pbw of the pigment, and such pigment composition is available in the use for drug medicines and the like, and exhibits better dispersibility.

Abstract: A phase change ink including an amorphous compound; a crystalline compound; an optional colorant; an optional synergist; an optional dispersant; and at least one polyhydroxyalkanoate compound of the formula wherein R is independently selected from the group consisting of a hydrogen atom, a hydrocarbon group, a heteroatom, and combinations thereof; wherein n represents the number of repeating units of from 1 to about 35,000; and wherein x represents an integer from 1 to about 5.

Abstract: Emulsion-based thermal inkjet inks include a high boiling point carrier fluid; a colorant; and vesicles comprising a low boiling point expellant fluid, and an ionic surfactant comprising molecules, each having a head with affinity to expellant fluid material and a tail with affinity to carrier fluid, the vesicles having a core defined by the heads of the surfactant molecules, the expellant fluid contained in the core, with the vesicles dispersed in the carrier fluid. A method for preparing the thermal inkjet inks is also disclosed.

Abstract: Provided is an aqueous ink capable of recording an image achieving a high level of both of color developability and lightfastness. The aqueous ink includes a first pigment and a second pigment. The first pigment is C.I. Pigment Yellow 213, and the second pigment is at least one selected from the group consisting of C.I. Pigment Yellows 93, 128, 138, 151, 155, 180, and 215. The content A (% by mass) of the first pigment and the content B (% by mass) of the second pigment based on a total mass of the ink satisfy a relationship of 0.1?A/(A+B)?0.9. The ink further includes a water-soluble organic solvent having an SP value (unit: (cal/cm3)1/2) determined by Fedors' method of 11.0 or more and 16.0 or less.

Abstract: A phase change ink composition includes metal nanoparticles, a dispersing agent allowing the metal nanoparticles to be stably dispersed and arranged within the phase change ink composition, and a solvent in which the metal nanoparticles and the dispersing agent are mixed and which comprises at least two sulfur-containing compounds, wherein the phase change ink composition has a melting temperature ranging from 60° C. to 90° C.

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: The present invention relates to a reversibly thermochromic aqueous ink composition comprising: water; a water-soluble organic solvent; a reversibly thermochromic microcapsule pigment which contains a reversibly thermochromic composition comprising: (A) an electron donating coloring organic compound, (B) an electron accepting compound, and (C) a reaction medium which determines temperature at which color reactions between the components (A) and (B) occur; a comb type polymer dispersant having carboxyl groups on its side chains, an organic nitrogen sulfur compound, and a water-soluble resin, a writing instrument using the ink composition, and a writing instrument set comprising the writing instrument and a frictional body.

Abstract: It is an object of the present invention to provide an ink set which makes it possible to obtain recorded images that have a broad color reproduction range and a high saturation, as well as glossiness without conspicuous graininess caused by dot expression, and which in particular makes it possible to achieve an extreme suppression of graininess caused by dot expression in cases where the ink set is used on media that have a coating layer, and to obtain recorded images with extremely superior coloring characteristics in cases where the ink set is used on ordinary paper. The present invention provides an ink set comprising at least a yellow ink (Y), magenta ink (M), cyan ink (C) and red ink (R), wherein the L* values in the CIE-stipulated Lab display system of aqueous solutions of the respective inks diluted 1000 times by weight are in the following ranges: (Y): at least 89 but no more than 94, (M): at least 76 but no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.

Abstract: A treatment solution for ink-jet recording includes water; and a compound represented by the following general formula (1) or a salt thereof, wherein in the general formula (1), m is an integer from 2 to 6, n is an integer from 20 to 40.

Abstract: The present invention relates to effect pigments based on substrates having an outer coating comprising metal oxide, hydroxide and/or oxide hydrate and at least one organic coupling agent.

Abstract: A non-aqueous inkjet ink including at least a pigment, a dye and organic solvents, wherein the total amount of the pigment and the dye is at least 3 mass % relative to the total amount of the ink, the content ratio of the pigment to the dye is in the range from 7:3 to 4:6, the pigment has a DBP oil absorption in the range from 60 cm3/100 g to 140 cm3/100 g, and the organic solvents include at least two organic solvents including an organic solvent with an ? value of at most 10 and an organic solvent with an ? value of at least 30.

Abstract: A phase change ink composition comprising an amorphous component, a crystalline component comprises a sulfone compound or derivatives thereof, and optionally, a colorant, which are suitable for ink jet printing, including printing on coated paper substrates.

Abstract: A solid ink composition used for ink jet printing. In particular, the solid inks comprise a liquid crystalline material that can be jetted in a molten, amorphous state at elevated temperatures, electrically poled to align the molecules in an intermediate liquid crystalline state at lower temperatures, and then frozen into a robust, high quality image upon cooling.