Abstract: A recording apparatus includes a first nozzle for ejecting a first type of liquid for base coating onto a recording target medium and a second nozzle for ejecting a second type of liquid onto a base formed as a result of the base coating. A distance between the first nozzle and the recording target medium is shorter than a distance between the second nozzle and the recording target medium.

Abstract: A method of minimizing kogation of a heater element in a thermal inkjet printhead. The method includes the steps of: (i) supplying an inkjet ink to a nozzle chamber of the printhead; and (ii) repeatedly actuating a heater element in the nozzle chamber so as to heat a portion of the ink to a temperature sufficient to form a bubble therein, thereby causing droplets of ink to be ejected from a nozzle opening associated with the nozzle chamber. The ink includes a styrene-acrylic copolymer having a glass transition temperature (Tg) in the range of 5 to 30° C. and acid value in the range of 100 180 mgKOH/g, said styrene-acrylic copolymer minimizes kogation of the heater element.

Abstract: An inkjet ink contains a pigment, a water-soluble resin having a hydrophobic group, an inclusion compound, and water. The water-soluble resin includes a part adsorbed to the pigment and a part not adsorbed to the pigment. The inclusion compound is cyclodextrin or a cyclodextrin derivative. The mass ratio of the part not adsorbed of the water-soluble resin to the inclusion compound is in the range of 0.30 to 9.00.

Abstract: An inkjet ink includes carbon nanotubes, flake graphites, an organic carrier, a binder, a surfactant, a film enhancer and a solvent. A method for making an inkjet ink includes dispersing the plurality of carbon nanotubes in the surfactant solvent to form a first mixture, dispersing the plurality of flake graphites in the organic carrier solvent to form a second mixture, adding the film enhancer into the second mixture to form a third mixture, and mixing the first mixture and the third mixture.

Abstract: An Ink jet recording ink composition contains a dispersion containing a pigment dispersible in water therein and having an average particle size in the range of 20 to 300 nm, water, and a polyurethane resin containing a compound expressed by formula (I) and/or a compound expressed by formula (II): where N represents an integer in the range of 1 to 6. where O+P+Q is an integer in the range of 0 to 6.

Abstract: A system for reducing ink color mixing effects in a printer is provided having a printhead having multiple ink color channels mounted to a housing of the printer at a first level, and a plurality of ink supply cartridges mounted to the printer housing so as to be fluidically connected to the printhead and stacked in an array having a plurality of rows defining a plurality of levels which are lower than the first level. The plurality of ink supply cartridges include at least one black ink supply cartridge which supplies black colored ink to a black ink color channel of the printhead. The black ink supply cartridge is disposed at the lowest level defined by the array.

Abstract: The present invention relates to (1) a water-based ink for ink-jet printing having excellent storage stability and anti-curling property which includes particles of a crosslinked water-insoluble polymer containing a colorant wherein a content of water in the ink is 60% by weight or less, and the crosslinked polymer contains an anionic group neutralized with a base in an amount of from 0.5 mmol or more per 1 g of the crosslinked polymer; (2) a process for producing the water-based ink; and (3) a method of reducing curling of a print wherein the print is obtained by printing characters or images thereon with the water-based ink using an ink-jet printer.

Abstract: An inkjet ink composition is provided that includes (Component A) an N-vinyllactam, (Component B) a compound represented by Formula (B), and (Component C) a di(meth)acrylate ester of a hydrocarbon diol having 6 to 18 carbon atoms wherein R1 denotes a hydrogen atom or a methyl group, and R2 to R12 independently denote a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. There is also provided an inkjet recording method that includes (a) an image formation step of forming an image above a support by discharging the inkjet ink composition by an inkjet method and (b) a curing step of curing the inkjet ink composition by irradiating the obtained image with actinic radiation to thus obtain a printed material having a cured image above the support.

Abstract: A process for forming an image by using an inkjet recording apparatus including printing by using two or more kinds of inks each containing a pigment dispersion containing a pigment and a resin, an organic solvent and water, wherein the printing is conducted by ejecting the inks each having a particle size-change constant within a prescribed range from recording heads in the increasing order of the particle size-change constants, wherein each particle size-change constant is obtained by a prescribed process from the average particle diameters of the pigment included in each ink at mass drying rates in the range of 10 to 40%.

Abstract: An ink set having a cyan ink, a magenta ink and a yellow ink. A combination of a cyan, magenta and yellow dye respectively contained in the cyan, magenta and yellow ink is selected so as to satisfy the condition that optical density retentions of images formed by a cyan ink for evaluation containing the cyan dye, a magenta ink for evaluation containing the magenta dye and a yellow ink for evaluation containing the yellow dye, as determined before and after an ozone resistance test with an integral ozone concentration of 800 ppm·hr and before and after a xenon light resistance test with an integral irradiance of 43,800 klx·hr, are 70% or more for each of the inks for evaluation and are such that a maximum value of differences of the optical density retentions among the images formed by the respective inks for evaluation is 15 or less.

Abstract: A treatment solution used for ink-jet recording, including: polyallylamine contained in the treatment solution in an amount of 0.5% by weight to 10% by weight; polyamidepolyamine-epihalohydrin copolymer contained in the treatment solution in an amount of 0.3% by weight to 2% by weight; and water.

Abstract: An aqueous ink for inkjet printing which includes a pigment, a compound represented by formula (1) and/or a compound represented by formula (2): R1—O—(CH2CH2O)n—H??(1) R1—O—(CH2CH2O)m—R2??(2) wherein R1 and R2 are each an aliphatic group having 2 to 5 carbon atoms or an alicyclic group having 3 to 5 carbon atoms, and n and in are each an average molar number of addition of 6 to 9, and water in a content of 50 to 65% by weight. The total content of the compound represented by formula (1) and the compound represented by formula (2) is 10 to 30% by weight. The aqueous ink is excellent in the curl prevention after print and print density as well as in the storage stability. In a method of inkjet-printing images using the aqueous ink on plain paper by one-pass print, the water content in the aqueous ink which is jetted onto unit area of the plain paper is regulated within 0.2 to 1.0 mg/cm2.

Abstract: The present invention provides an ink composition including: a pigment, a water-soluble polymerizable compound (A) having an acrylamide structure in a molecule thereof, a water-soluble solvent (B), and water, in which a mass ratio of the polymerizable compound (A) and the water-soluble solvent (B) satisfies 1/10?B/A?2/3.

Abstract: An ink set containing a water-based ink for ink jet recording and a treatment liquid. The water-based ink contains a phosphate-group modified self-dispersing pigment, water, and a water-soluble organic solvent. The treatment liquid contains an aggregating agent, water, and a water-soluble organic solvent. A dynamic surface tension of the water-based ink, measured under the condition where a life time is about 50 ms, is in the range of 35 mN/m to 45 mN/m. A dynamic surface tension of the treatment liquid, measured under the condition where a life time is about 50 ms, is in the range of 33 mN/m to 45 mN/m.

Abstract: The present invention provides an active radiation curable ink composition including: (A) a polymer having two or more acidic groups or two or more basic groups; (B) a polymerizable monomer having a substituent group capable of forming a counter salt with the acidic group or basic group of the polymer (A); (C) a photo-polymerization initiator; and (D) a polymerizable monomer having a different structure from the polymerizable monomer (B).

Abstract: An ink-jet ink includes a jettable vehicle, a plurality of pigment solids dispersed in the jettable vehicle, and a plurality of structurally related polymers dispersed in the jettable vehicle. Additionally, a system for printing images on a porous photo medium includes a jettable ink and a printhead loaded with the jettable ink.

Abstract: A fully curable jettable composition having a viscosity less than 30 cps at a temperature within the range of 15° C.-180° C. comprising (i) at least one low viscosity reactive resin; (ii) at least one higher viscosity resin having a viscosity greater than twice that of the low viscosity resin and a functionality of greater than or equal to 2; (iii) at least one curable toughener, (iv) at least one initiator for the polymerization of the resins, and (v) at least one stabilizer for delaying the curing of the resins of the composition. The composition can be jetted from piezo electric printing heads under the control of a computer program to form a multi-layered article, for example, a three dimensional article, in which the adjacent droplets merge and are cured homogeneously together.

Abstract: An inkjet recording method includes recording by ejecting liquid droplets of an ink onto a recording medium from an ejection head that ejects, by heat, the liquid droplets of the ink at an ejection amount with respect to one droplet of from 1 ng to 2 ng to thereby attach the liquid droplets of the ink to the recording medium, wherein the ink comprises a pigment having a volume average particle diameter of from 100 nm to 400 nm and has a dynamic contact angle of from 30° to 60°, 50 seconds after dropwise addition of 3 ?l of the ink to plain paper.

Abstract: A concentrated inkjet ink for packaging includes a liquid composition present in an amount that is less than 60 wt % of the concentrated inkjet ink, and nonvolatile solids present in an amount ranging from about 40 wt % to about 90 wt % of the concentrated inkjet ink. The nonvolatile solids include encapsulated pigment particles having a particle size ranging from about 50 nm to about 500 nm, and a dispersant. The concentrated inkjet ink is dispersible in an ink vehicle to form a print ready inkjet ink.

Abstract: An inkjet ink composition is provided that includes (Component A) an N-vinyllactam, (Component B) a di(meth)acrylate ester of at least one type of diol selected from the group consisting of a straight-chain hydrocarbon diol having 9 to 18 carbon atoms, a branched hydrocarbon diol having 6 to 18 carbon atoms, and a monoalicyclic hydrocarbon diol having 6 to 18 carbon atoms, and (Component C) at least one type of polymerization initiator selected from the group consisting of an ?-amino ketone compound, a thioxanthone compound, a thiochromanone compound, and a bisacylphosphine oxide compound. There is also provided an inkjet recording method that includes (a) an image formation step of forming an image above a support by discharging the inkjet ink composition by an inkjet method and (b) a curing step of curing the ink composition by irradiating the obtained image with actinic radiation to thus obtain a printed material having a cured image above the support.

Abstract: An aqueous ink for inkjet printing which includes a pigment-containing polymer particle and/or a self-dispersible pigment, a compound represented by formula (1): CH3—O—(CH2CH2O)n-R1??(1) wherein R1 is hydrogen atom, an aliphatic group having 1 to 6 carbon atoms, or an alicyclic group having 3 to 6 carbon atoms, and n is an average molar number of addition of 6 to 20, and water in a content of 50 to 65% by weight. The content of the compound represented by formula (1) is 10 to 30% by weight. The aqueous ink is excellent in the curl prevention after print, curl prevention after its storage and print density as well as in the storage stability and jetting stability. In a method of inkjet-printing images on plain paper by one-pass print, the water content in the aqueous ink which is jetted onto unit area of the plain paper is regulated within 0.2 to 1.0 mg/cm2.

Abstract: There is provided an ink for recording, which contains: a coloring agent; a water-dispersible resin; a wetting agent; a surfactant; and water, wherein a total solid content of the coloring agent and the water-dispersible resin is 10% by mass to 30% with respect to a total mass of the ink, a ratio B/C is 0.1 to 1.6 where B is a solid content of the coloring agent in the ink, and C is a solid content of the water-dispersible resin in the ink, a viscosity of the ink is 5 mPa·s to 20 mPa·s at 25° C., and a surface tension of the ink is 35 mN/m or less.

Abstract: A dispersion of an encapsulated particulate solid is described, which is obtained by a process comprising the steps of providing a dispersion comprising a particulate solid, a liquid medium and a dispersant which is obtained or obtainable by copolymerising a monomer composition; and cross-linking the dispersant in the presence of the particulate solid and the liquid medium, thereby encapsulating each particulate solid particle within a cross-linked dispersant shell.

Abstract: A pigment dispersion containing a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 ?m, and the condition R50/Z>5 is satisfied.

Abstract: An ink composition includes a wetting agent and water-insoluble polymer particles including a colorant and a water-insoluble polymer, wherein the content of free polymer derived from the water-insoluble polymer is 1.0% by mass or less with respect to the total mass of the ink composition, and the wetting agent is at least one selected from the group consisting of urea, a urea derivative, a pyrrolidone derivative, an alkyl glycine represented by the following Formula I, glycyl betaine and a sugar: (Formula I) R1 R2NCH2COOM wherein in Formula I, R1 and R2 each independently represent a linear or branched alkyl group having 1 to 5 carbon atoms, and M represents a hydrogen atom, an alkali metal atom or an alkaline earth metal atom.

Abstract: The invention provides an inkjet ink composition including a pigment and colloidal silica, the pigment being covered with a water-insoluble resin including a constituent unit having an acidic group, with which rub resistance of images formed and ink discharge reliability are excellent and deterioration of liquid repellency of an inkjet head member is suppressed.

Abstract: The present invention provides an inkjet ink composition including color material particles, a water soluble polymerizable compound, a water soluble silicate salt and water, which is excellent in ejection stability even in a case in which the ink composition is stopped from ejecting in the inkjet recording device and left alone for a certain period of time, and ejection of the ink composition is resumed thereafter, which has a good maintenance property, and in which abrasion resistance of images formed with the ink composition is excellent; an ink set including the inkjet ink composition; and an image forming method using the ink set.

Abstract: The invention provides a non-aqueous jet printing ink which has printability (abrasion resistance and resistivity to wiping with alcohol) suitable for recording media made of plastics such as polyvinyl chloride and which is excellent in safety and can be used without problematic odor, and a method of ink-jet recording with the ink. The non-aqueous jet printing ink is characterized by containing, as the essential components, a pigment, a pigment derivative having an acid group, a fixing resin, and a compound (A) consisting of one or more members selected from the group consisting of compounds represented by the general formulae (1) and (2).

Abstract: An ink and method of its use for printing on a variety of substrates in a first aspect involves a water-insoluble colorant, water, and a primary solvent such as diacetone alcohol capable of dissolving both the water-insoluble colorant and the water. In a further aspect, the ink composition includes a secondary solvent capable of modifying the properties of the ink, the secondary solvent being selected from the group consisting of alcohols, amines, esters, glycol ethers, ketones, polyols, and keto-pyrroles. In a still further aspect, the ink may have at least two polyols, including a first polyol characterized by being semi-solid at operating temperature and a second polyol characterized by being liquid at operating temperature. In a further aspect, the ink composition includes a surfactant selected from the group consisting of hydrocarbon-based surfactants, silicone-based surfactants, and fluorosurfactants.

Abstract: The present invention provides an inkjet ink composition including at least one water-soluble organic solvent, water, at least one colorant, and at least one colloidal silica, wherein 40% or more by mass of a total content of the water-soluble organic solvent has an SP value of 27.5 or less, and the inkjet ink composition having excellent discharge reliability, and suppressing curling of prints formed with the ink and deterioration of liquid repellency of an inkjet head member.

Abstract: An inkjet printing method including, in order, the steps of: a) providing at least two or more color inkjet inks of the same color and color density but having a different composition to an inkjet printer; b) mixing the two or more color inkjet inks in a controlled amount; and c) printing the mixture of the two or more color inkjet inks with the inkjet printer onto an ink-receiver. An inkjet printer and an inkjet ink set include two or more color inkjet inks of the same color and color density but having a different composition.

Abstract: An ink composition includes: water-insoluble polymer particles having a colorant and a water-insoluble polymer; and a compound represented by the following Formula (A), wherein the content of free polymer derived from the water-insoluble polymer is 1.0% by mass or less with respect to the total mass of the ink composition: wherein, R1 and R2 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 22 carbon atoms; R3 represents a divalent hydrocarbon group having 1 to 18 carbon atoms; R1 and R2 may be the same as or different from each other, but R1 and R2 do not both represent a hydrogen atom at the same time; R1 to R3 may each have a substituent; m and n each independently represent an average addition mole number of AO of from 0 to 30; and AO represents an alkylene oxy group.

Abstract: An ink set including an aqueous ink composition and a treatment liquid is disclosed. The aqueous ink composition includes a pigment, a graft polymer including an anionic group at a side chain thereof, and an aqueous medium. The treatment liquid includes an acidic compound that aggregates one or more components of the aqueous ink composition.

Abstract: An ink composition is disclosed which includes a pigment that is coated with a water-insoluble resin, particles of a water-insoluble polymer having a glass transition temperature of 100° C. or higher, a solid moistening agent, a water-soluble organic solvent, particles of a wax having a melting point of from 40° C. to lower than 100° C., and water.

Abstract: A clear ink composition includes at least a slightly water-soluble alkanediol, a water-soluble alcohol as a dissolution aid for the slightly water-soluble alkanediol, water, and polymer fine particles, but does not include a colorant. A 10-Hz dynamic surface tension of the ink composition is 26 mN/m or less.

Abstract: The present invention provides an inkjet recording processing liquid for use in an inkjet recording method of causing a processing liquid to adhere to a recording medium and thereafter causing ink to adhere to the recording medium to which the processing liquid has adhered. The inkjet recording processing liquid contains water, glycerin, and at least one multivalent metal salt selected from the group consisting of calcium nitrate and magnesium nitrate. The glycerin content in the processing liquid is 10 to 50 mass percent, and the multivalent metal salt content in the processing liquid is 0.8 to 2.0 mol/L.

Abstract: The present invention relates to an ink jet recording method for recording a white overlaying layer and a non-white pattern layer to a recording medium, printed matters obtained by the recording method, and systems for realizing the recording method thereof.

Abstract: Disclosed is a color filter ink composition that includes an acrylic-based copolymer resin including repeating units represented by a particular chemical formula, a polymerizable monomer, a pigment, and a solvent. According to the present invention, the color filter ink composition can have excellent ejection properties and ejection stability by using a new acrylic-based copolymer resin as a binder resin, and also can have excellent storage stability, so that it can be used for a long period. In addition, a pattern formed using the color filter ink composition can have improved heat resistance, chemical resistance, and film strength.

Abstract: An image processing method includes a conversion step of converting input image data into ink color data corresponding to respective use amounts of one or more types of color inks and a clear ink. In the conversion step, the input image data is converted into ink color data so that the use amount of the clear ink used in ink color data using a black carbon-containing ink becomes equal to or larger than that of the clear ink used in ink color data using no black carbon-containing ink.

Abstract: The present disclosure is drawn to an oil-based ink jet ink including a non-aqueous, oil-based liquid vehicle containing a charge control agent, the liquid vehicle having a conductivity of less than less than 50 pS/cm; from 3 wt % to 12 wt % of a pigment; from 0.5 wt % to 6 wt % of a dispersant; and from 0.001 wt % to 0.5 wt % of a high molecular weight polymer that is partially or fully solubilized in the liquid vehicle, and having a weight average molecular weight from 50,000 to 5,000,000 Mw, wherein ink jet ink has a conductivity of less than 1,000 pS/cm.

Abstract: The invention provides an aqueous ink composition including (A) a colorant, (B) a polymer including a hydrophobic structural unit represented by Formula (1) below, (C) a polymerization initiator, (D) a polymerizable compound including an ethylenically unsaturated bond, and (E) water.

Abstract: There is provided an inkjet recording method in which two liquids are printed and which can perform inkjet ejection, in which the inkjet recording method provides a high-quality image using a reaction liquid having excellent storage stability, ejection stability, and recoverability from clogging on a recording medium having an absorbing layer of a paper support with low water absorption, the image having excellent abrasion resistance.

Abstract: An ink composition including colored particles is disclosed. The colored particles includes a resin dispersant including at least one radically polymerizable group and at least one aromatic partial structure derived from a compound selected from the group consisting of an aromatic hydrocarbon compound, a condensed ring aromatic hydrocarbon compound, an aromatic heterocyclic compound, a condensed ring aromatic heterocyclic compound, and a compound having two or more aromatic hydrocarbon compounds linked to each other; and a colorant.

Abstract: A pigment dispersion containing a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 ?m, and the condition R5O/Z>5 is satisfied.

Abstract: A liquid ejection apparatus includes an ejection head having nozzles that eject liquid, a strap member that holds the liquid ejected from the ejection head, a feeding roller and a winding roller around which the strap member is wound, and a driving source that rotates the winding roller, wherein a flash point of the liquid that is held in the strap member is 95 degrees Celsius or more, and the driving source is disposed at a position closer to the winding roller than to the feeding roller.

Abstract: Disclosed is a phase change ink comprising a colorant, an initiator, and a phase change ink carrier, said carrier comprising at least one radically curable monomer compound and a compound of the formula wherein R1 and R1? are the same, and wherein R1 and R1? are each an aromatic group; and wherein R2 and R2? and R3 each, independently of the others, are alkylene groups, arylene groups, arylalkylene groups, or alkylarylene groups; or wherein, in embodiments, R1 and R1? can be the same or different, and wherein R1 and R1? each, independently of the other is an alkyl group having a least one ethylenic unsaturation, an arylalkyl group having at least one ethylenic unsaturation, an alkylaryl group having at least one ethylenic unsaturation, or an aromatic group, provided that at least one of R1 and R1? is an aromatic group; and provided that neither of R1 or R1? is a photoinitiator group. Also disclosed herein is a method of printing with the phase change ink.

Abstract: An ink jet image-forming method for forming an image by applying an ink in a fixed amount of 0.5 pl or more to 6.0 pl or less to plain paper. The ink contains a self-dispersion pigment, water, a water-soluble compound having a coefficient of hydrophilicity-hydrophobicity of 0.37 or more as defined by the equation (A) stated in the description and a water-soluble compound having a coefficient of hydrophilicity-hydrophobicity of 0.25 or less, and has a surface tension of 34 mN/m or less. The application of the ink is divided into plural times when an image having a portion where the ink is applied in a duty of 80% or more and an amount of 5.0 ?l/cm2 or less in total is formed in a basic matrix for forming the image, and the amount of the ink applied at each of the times divided is 0.7 ?l/cm2 or less.

Abstract: A method of printing a time limited document is disclosed. The method includes the steps of selecting an ink having a fading time, and printing the time limited document using the selected ink. A printer and associated cartridge are also disclosed.

Abstract: An actinic energy radiation curable ink-jet ink comprising an actinic energy radiation polymerizable compound, wherein the actinic energy radiation polymerizable compound comprises a vinyl ether compound, a total content of the vinyl ether compound is 30% or more by mass, the vinyl ether compound comprises a bis-vinyl ether compound and a multifunctional vinyl compound having three or more vinyl ether groups, 10 to 70% by mass of the ink is the bis-vinyl ether compound, and 5 to 70% by mass of the ink is the multifunctional vinyl compound having three or more vinyl ether groups.

Abstract: An inkjet printing method and an inkjet printing apparatus are provided which can realize equal smoothness in both a printed area and in a non-printed area and produce a printed material having a uniform glossiness over the entire printed image. To this end, the clear ink is applied in two phases—a first phase that makes the print medium impenetrable by applying highly penetrative clear ink to the print medium stepwise or intermittently in a small volume at a time and a second phase that applies in a short period of time a greater volume of clear ink than that applied in the first phase of clear ink application. With this process, a clear ink layer of a uniform thickness is formed in both the printed area and the non-printed area on the surface of the print medium made impenetrable by the first phase.