Abstract: Erasable inks are provided for use in a writing instruments. In one aspect, the inks include a solvent, and, dispersed in the solvent as a colorant, a pigment having a flake-like morphology, the ink being substantially free of other colorants.

Abstract: Disclosed is an ink composition suitable for ink jet printing comprising a luminescent compound, a solvent, and an energy active compound, and optionally a non-luminescent colorant. The energy active compound, when exposed to energy, generates one or more active species that can react with the luminescent compound to alter one or more of the characteristics of the luminescent compound. The luminescent compound can be colored or colorless. Also disclosed is a method for marking substrates comprising providing a mark comprising a luminescent compound and an energy active compound. Further disclosed is a jet ink composition suitable for printing on substrates authentication or security marks which can be rendered unreadable. The luminescence of the mark is quenched and the visible color is changed when irradiated with a light.

Abstract: An ink composition having an array of encapsulating particles contained within a liquid medium. The encapsulating particles encapsulate one or more pigment particles. The ink composition is prepared and formulated such that the density of the encapsulating particles approximate the density of the liquid medium containing the encapsulating particles such that a neutral buoyancy is achieved. More particularly, in a case where the liquid medium is water, the density of the encapsulating particles ranges from 0.9 g/cc to 1.1 g/cc.

Abstract: An inkjet recording ink composition and an ink jet recording method is provided, which can ensure that an ink droplet can be always stably ejected in long-term inkjet recording, a high-quality image can be formed for a long period of time and, even when the recorded materials are superposed, the image-recorded materials do not adhere to each other in aging, the ink composition comprising a dispersion medium and a charged particle containing a coloring material, wherein said ink composition satisfies all of the conditions (A) to (D): (A) the electric conductivity at 20° C. of the ink composition is from 10 to 300 nS/m, (B) the electric conductivity at 20° C. of the charged particle is 50% or more of the electric conductivity of the ink composition, (C) the volume average diameter of the charged particle is from 0.2 to 5.0 &mgr;m, and (D) the viscosity at 20° C. of the ink composition is from 0.5 to 5 mPa·s.

Abstract: Disclosed are colorant compounds of the formula 1

Abstract: The present invention provides an ink composition comprising a fine color particle dispersion containing an oil-soluble dye, a hydrophobic polymer and a high-boiling point organic solvent, wherein the glass transition temperature (Tg) of the hydrophobic polymer is 40° C. or more. An average particle diameter of the color fine particles is preferably 0.01 to 0.5 &mgr;m and has a specific gravity of 0.9 to 1.2. A solubility of water in the high boiling point organic solvent at 25° C. is preferably 4 g or less. Also, the invention provides an ink jet recording method comprising a step of forming an image by discharging the ink composition onto an ink image receiving material and a step of fusing the fine color particles contained in the ink composition on the ink image receiving material by at least one of heat and pressure.

Abstract: A composition for ink-jet recording is provided. The composition comprises a water miscible resin and a water-soluble ultraviolet curable humectant. The concentration of the water-soluble ultraviolet curable humectant may be in the range of 5% to 50% by weight. Examples of such humectants may include polyalkylen glycol acrylates, polyethers acrylates, and highly ethoxylated derivatives of acrylates.

Abstract: There is provided a method for producing colorants which can exhibit excellent color development even in a small amount and are low in thixotropy.

Abstract: The invention provides a method for preparing an ink having constituents of a water-soluble dye having a water-soluble solubilizing group of at least one of a sulfonic group and a carboxyl group, water, a water-soluble substance that is condensation-polymerized in the absence of the water, a water-soluble medium and an additive including at least one of an organic acid salt and an inorganic acid salt. This method includes a first mixing step of mixing at least the dye and the water-soluble substance out of the constituents of the ink excluding the additive; a second mixing step of mixing a mixture obtained in the first mixing step and the additive; and a pH adjusting step, performed before the second mixing step, of preparing a solution including the mixture or a solution including the additive while adjusting the solution to a given pH range by using a pH adjuster.

Abstract: A water-based pigment ink contains a pigment, a hydrophilic dispersant, an aqueous medium, an alkali agent for solubilizing the hydrophilic dispersant in the aqueous medium, and a hydrophilic compound having at least one structural unit of “hydrophobic molecular chain-hydrophilic molecular chain-hydrophobic molecular chain” in a structure thereof. The water-based pigment ink is suited especially as an ink for ink-jet printers.

Abstract: The invention relates to an aqueous ink composition containing a polyurethane polymer and at least one colorant, wherein the colorant is covalently bonded to the polyurethane polymer, and the composition is crosslinkable to form a network containing the polyurethane polymer, wherein the crosslinking reaction is initiated by UV-irradiation or electron beam.

Abstract: The present invention relates to a resin composition for digital printing on a metallic material and a printing method using the resin composition. The resin composition comprises 40 to 70 wt % of at least one selected from acrylics, polyurethanes, polyvinyl alcohols and epoxy-based resins, 20 to 50 wt % of at least one diluent selected from methyl alcohol, isopropyl alcohol, ethyl acetate and toluene, 3 to 20 wt % of silica as a printing propriety imparting agent, 0.05 to 1 wt % of a wetting agent and 0.01 to 30 wt % of a curing agent. The resin composition can be applied directly to a metallic material through digital printing. Further, the resin composition is excellent in view of resolution, adhesivity and durability and allows printing processes to be shortened, thereby reducing costs.

Abstract: The invention is to provide a water based ink for ball-point pen capable of writing also on a non-permeable surface and ball-point pen using a same ink. In the invention, there are provided a solvent formed by a water and an alcoholic solvent having a vapor pressure at 20° C. of 0.5 kPa or higher, a pigment constituting a coloring material, a water-soluble resin constituting a writing fixing agent, and a surfactant of phosphoric acid ester type wherein an ink viscosity at 20° C. is within a range of 5 to 30 mPa·s, and ball-point pen using the same ink.

Abstract: A non-erasable ink composition suitable for use in writing instruments is described comprising an isocyanate five thermoplastic polyurethane resin, a colorant and an organic solvent. The ink composition may also include a second resin, plasticizers, antioxidants, corrosion inhibitors, lubricants, chemical dispersants, and surfactants. The inks of the present invention exhibit a smooth writing performance and non-seepage.

Abstract: This invention relates to an ink composition (and a method of printing therewith) comprising water, a humectant, and polymer-dye particles, wherein said polymer-dye particles comprise a colorant phase containing a water insoluble dye of formula (I), and a polymer phase, said particles being associated with a co-stabilizer 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: This invention relates to an ink jet ink composition comprising polymer dye particles, said polymer dye particles comprising a polymer phase associated with a water-insoluble dye, wherein said polymer phase comprises at least one halogenated vinyl monomer. It further relates to methods of printing using the ink jet ink composition.

Abstract: Disclosed herein is a colorless or pale-colored liquid composition comprising a cationic substance, wherein the liquid composition contains in combination a cationic substance and a nonionic polymeric substance.

Abstract: Disclosed is a cap holding device for an embroidery machine capable of easily mounting a cap while securely supporting the cap and improving workability and productivity. The cap holding device has a holding member for mounting the cap thereon, a pressing member detachably coupled to the holding member so as to maintain the cap in the holding member, and at least one fixing part formed at one end or both ends of the pressing member and fixed to the holding member.

Abstract: The subject invention provides a composite comprising stabilized conductive nanoparticles dispersed within a polymer matrix. The dielectric constant of the composites is advantageously high, exceeding that predicted by the rule of mixtures. The subject invention further provides a film comprising such composites. Such films will enjoy applicability in electronics applications. The subject invention additionally provides a thin film organic transistor comprising the inventive composite. The subject invention further provides processes for stabilizing conductive nanoparticles.

Abstract: An ink jet ink composition of water, a humectant, and a hyperbranched polymeric dye of a hyperbranched polymer having a dye chromophore pendant on the polymer chain or incorporated into the polymer backbone.

Abstract: Disclosed herein is an ink comprising a pigment and a resin encapsulating a coloring material. The ink can provide an image high in optical density and excellent in rub-off resistance, water fastness and resistance to line marker, and exhibits excellent ejection stability from a recording head when used in ink-jet recording.

Abstract: Pigment preparations comprising

Abstract: A water-based ink comprising a colored microparticle dispersion having water and a microparticle containing a resin and a colorant, wherein the microparticle has a core part and a shell part to form a core-shell structure and the core part and the shell part are cross-linked with a cross-linking agent.

Abstract: Phase change ink carrier compositions comprising an admixture of (1) at least one urethane resin; and/or (2) at least one mixed urethane/urea resin; and/or (3) at least one mono-amide; and/or (4) at least one polyethylene wax are provided. In addition, a phase change colored ink of such carrier compositions comprising a phase change ink compatible colorant are also provided. Embodiments of the present invention also include methods for producing a layer of the above phase change colored ink on the surface of a substrate by either direct or indirect printing. Such methods also encompassing using a polyethylene wax as an overcoat layer above such a phase change ink layer on a printed substrate.

Abstract: It is an object of the present invention to provide an ink composition with excellent gas resistance, fixability, and bronzing resistance, as well as a recording method and recorded matter in which this ink composition is used. The present invention achieves this object by means of an ink composition in which a pigment is dispersed in a solvent, and a copolymer, which contains structural units originating in an aromatic compound monomer and structural units originating in a C5 or higher diene compound and/or structural units originating in a non-diene compound, is included, wherein the copolymer has a sulfonic acid group, and the proportion of structural units originating in the aromatic compound monomer is 30 to 60 wt % with respect to the weight of the copolymer (100 wt %) In the present invention, styrene, &agr;-methylstyrene, o-methylstyrene, p-methylstyrene, m-methylstyrene, chlorostyrene, or vinyl benzoate is selected as the above-mentioned aromatic compound monomer.

Abstract: A water-based cyan ink for ink-jet printing, comprising pigment particles or water insoluble colored polymer particles, wherein an ink-jet image is formed by jetting the water-based cyan ink on a porous ink-jet recording sheet with an ink-jet printer without being subjected to an post-treatment, and the ink-jet image has the following set of color coordinate values in a L*a*b* color space when L* is in a range of 65<L*<75:

Abstract: Disclosed is a phase change ink composition comprising (a) a colorant and (b) the reaction product of (i) an isocyanate and (ii) an antioxidant or UV stabilizer molecule having thereon (A) at least one isocyanate-reactive hydroxyl group and/or (B) at least one isocyanate-reactive primary or secondary amino group.

Abstract: A novel, easy, and efficient manner of toning shades of toluene-based gravure inks is provided, particularly through the incorporation of certain polymeric colorants therein said gravure ink formulations. In addition, such toner additives provide a toning capabilities of carbon black-based gravure inks that provides jetter black appearances with lower degrees of redness and bronzing on various types of printing substrates than other toner formulations of standard alkali blue types of toning additives. Such printed substrates and methods of printing utilizing such novel gravure toner additives are also encompassed within this invention.

Abstract: Homogenous, aqueous, energy curable printing ink compositions containing metallic colorants.

Abstract: The present invention is drawn toward latex particulates in ink-jet inks having a surface dielectric constant from 2.0 to 3.0.

Abstract: Latex particles having a reactive surfactant covalently bonded to the latex particle surface are provided. The latex particles exhibit shear stability and accurate drop placement on printed media when used in ink jet inks and in high speed ink jet printers. A latex particle is also provided having a reactive surfactant covalently bonded to the surface of the latex particle, where the latex particle has a bulk density from 0.90 g/cm3 to 1.10 g/cm3 and a surface dielectric constant from 2.0 to 3.0. An ink-jet ink is provided that can comprise effective amounts of an ink vehicle, a colorant admixed in the ink vehicle, latex particles dispersed in the ink vehicle, and a reactive surfactant covalently bonded to the surface of the latex particles.

Abstract: The present invention is drawn to a latex-encapsulated particulate, comprising a particulate from 30 nm to 150 nm in size, and a latex at least partially encapsulating the particulate. The latex can have a surface dielectric constant from 2.0 to 3.0 at room temperature, and the latex-encapsulated particulate can have a bulk density from 0.90 g/cm3 to 2.0 g/cm3.

Abstract: An ink jet printing method, comprising the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading the printer with an ink jet recording element comprising a non-absorbing substrate; C) loading the printer with an ink jet ink composition comprising an aqueous ink jet ink composition comprising: a pigment, a polymer binder containing less than 25% of hydrophilic monomer by weight of the total polymer, which is dispersible but insoluble in aqueous media, at least one surfactant, and a humectant; and D) printing on the ink jet recording element accompanied by a heating step using the ink jet ink composition in response to the digital data signals.

Abstract: A water based ink composition for a ballpoint pen which is comprises an alkali-swelling associative thickener comprising a polymer having a carboxyl group and a hydrophobic group, a pigment, a polar solvent containing water, a pH controlling agent and other additives. It is a water based ink composition which is stable over a long period of time without settling of the pigment itself and can be filled into a ballpoint pen having simplified ink free type structure as is the case with a ballpoint pen using an oil based ink.

Abstract: The glittering ink of the present invention contacts scaly glittering particles, a water-soluble resin, a water-soluble organic solvent, colorant and water. The said scaly glittering particles have a median diameter of at least 10 &mgr;m, a ratio of smoothness on the particle surface to a median diameter of not greater than 0.011, and a surface coating ratio of the said colorant in a written mark of not greater than 80% in a state of a dried written mark. In addition, the aqueous glittering ink of the present invention has the thixotropy index (T.I. value) of not less than 1.3, represented by the ratio of V0.5 to V1.0 (V0.5/V1.0), wherein V0.5 is the viscosity with the rotation speed of 0.5 rpm and V1.0 is the viscosity with the rotation speed of 1.0 rpm when the ink is measured by an ELD-typed viscometer (3° R14 cone, at the temperature of 20° C.) and the ink has the V0.5, the viscosity with the rotation speed of 0.5 rpm, of 1000˜15000 mPa·s.

Abstract: A water-based security printing ink is provided with two means of security. The use of a variable light absorbing and/or transmitting pigment or dye is a first security and a water repelling agent is provided as a second security. Visible images can be generated from the printed ink upon exposure to UV or infrared light. The water repelling agent renders the image waterproof and differentiates the printed image from the substrate, which allows the image to be detected upon exposure to water or other aqueous mixture. Suitable inks can be used in conventional printing methods, such as jet printing, lithography, offset printing and impact printing. Also provided are substrates imaged with these security printing inks.

Abstract: The invention relates to ink for an ink jet, said ink containing a dye which is linked to a polymer skeleton. The inventive ink is characterised in that the dye is an azomethine dye, an indoaniline dye or an azo dye; and the polymer is a copolymer consisting of at least one hydrophobic monomer and at least one hydrophilic non-ionic monomer, the molecular weight of the hydrophilic, non-ionic monomer being at least 200. Even after a long storage time, the inventive ink does not cause nozzles to be clogged and creates a printed image which is highly resistant to wiping and water and has good gloss.

Abstract: A water base erasable ink composition for use in marking pens which comprises 0.05-20% by weight of a colorant and 1-20% by weight of an oily material which is nonvolatile at normal temperatures (25° C.) and is dispersed in water, wherein the oily material has a viscosity of 5-40 mPa·s at 20° C. and is dispersed in water in the form of emulsion, and wherein the colorant is dispersed in the water with the aid of a polyvinyl alcohol resin as a dispersing agent which has a saponification degree of 70-85 mol % and of which aqueous solution of 4% concentration has a viscosity of 2-30 mPa·s at 20° C. in a weight ratio of the resin to the colorant of 0.5 to 5 and in an amount of 1 to 10% by weight based on the ink composition.

Abstract: A pigment dispersing agent of the formula (1) capable of providing a printing ink or a coating composition excellent in fluidity and dispersion stability and a dry coating excellent in gloss, a pigment composition containing the same and a pigment dispersion containing the same, 1

Abstract: Novel, rapidly drying, low volatile organic compound (VOC), minimal dot gain coatings, (including lithographic ink and varnish systems) are herein described. These systems dry sufficiently rapidly, that their usage eliminates ink drying speed as the rate limiting factor in most lithographic printing applications. In addition to providing enhanced drying rates as compared with their conventional counterparts, the rapid drying, low/no VOC lithographic coating systems of the instant invention can provide the user with significant improvement in dried film rub resistance.

Abstract: The present invention relates to a composition containing ATRP polymers and dispersible inorganic or organic pigment particles. The pigment composition is useful for preparing coating compositions, prints, images, inks or lacquers and other disperse systems.

Abstract: The present invention provides an aqueous ink composition including a hydrophilic organic solvent, a surfactant, and a colored fine particle dispersion which contains an oil-soluble dye, and exhibiting a dynamic surface tension of 25 to 35 mN/m, as well as an ink-jet recording method including a step of carrying out recording using the aqueous ink composition.

Abstract: An inkjet ink including water; a particulate pigment; a dispersant; and an emulsion, wherein the particulate pigment has an average particle diameter (D50) not greater than 100 nm, and the standard deviation of particle diameter distribution of the particulate pigment is less than one half of the average particle diameter (D50). An inkjet cartridge containing the inkjet ink. An inkjet recording apparatus including the inkjet cartridge and a carriage configured to carry the ink cartridge. An inkjet recording method including discharging the inkjet ink from a nozzle of a recording head to form an ink image on a recording paper. An image formed on a recording material in accordance with the inkjet recording method.

Abstract: A water-based ink containing an aqueous dispersion of polymer particles of a water-insoluble polymer having an alkyl group of at least 20 carbon atoms in its side chain, and a hydrophobic dye. The water-based ink of the present invention can be suitably used as, for instance, an ink for inkjet recording, and the like.

Abstract: At least one embodiment of the present invention relates to an erasable ink composition particularly useful in a writing instrument for simultaneous the appearance of a graphite pencil. The composition of the present invention comprises a solvent system, a rubber and a pigment. The solvent system used in the present invention comprises an organic ester and a component selected from the group consisting of an optionally substituted cycloalkane, an optionally substituted cycloalkanone, an optionally substituted cycloalkene, or mixtures thereof. A sufficient amount of the solvent system is present so that the erasable ink composition will flow in a writing instrument. Finally, the erasable ink composition optionally includes a plasticizer, a liquid butene, or one or more additives selected from the group consisting of a corrosion inhibitor, a flow enhancing compound, and mixtures thereof.

Abstract: An aqueous dispersion of polymer particles of a water-insoluble vinyl polymer containing a hydrophobic dye, wherein the water-insoluble vinyl polymer is prepared by polymerizing a monomer composition comprising an alicyclic (meth)acrylate, a salt-forming group-containing monomer, and a monomer copolymerizable with the alicyclic (meth)acrylate and the salt-forming group-containing monomer; and an ink comprising the aqueous dispersion. The aqueous dispersion is excellent in, for instance, storage stability, and the ink is excellent in, for instance, printing reliability, solvent resistance, water resistance and character quality.

Abstract: Radiation-curable ink compositions and methods of printing including the compositions are disclosed.

Abstract: The present invention provides a black ink composition comprising (1) water, (2) carbon black, and (3) a fine particle emulsion, wherein (A) the content of said carbon black is less than 0.4 wt %, and wherein (B) the solid content of said fine particle emulsion is 20 times or more the content of said carbon black. Also disclosed are an ink set comprising the black ink composition, a recording method using the ink set, and recorded matter obtained by the method.

Abstract: A pigmented polymer composition containing colorant particles and polymer particles having phosphorus acid groups is provided. The polymer particles are prepared from the low pH polymerization of phosphorus acid monomer, or alternatively, are substantially free of water soluble polymer bearing phosphorus acid groups. A method for preparing colored coatings from the pigmented polymer composition is also provided. Colored coatings have improved color properties.