Abstract: An in situ process for preparing a phase change magnetic ink including combining a phase change ink composition with a reducing agent; wherein the phase change ink composition comprises a carrier, an optional colorant, and an optional dispersant, and wherein the reducing agent has at least one alcohol functionality; heating the combined phase ink composition and reducing agent to a first temperature sufficient to provide a melt composition; adding a metal salt to the melt composition under an inert atmosphere to provide a metal salt-melt composition; heating the metal salt-melt composition to a second temperature sufficient to effect a metal reduction reaction to reduce the metal salt to metal nanoparticles thus forming in situ a phase change magnetic ink including the metal nanoparticles; optionally, filtering the phase change magnetic ink while in a liquid state; cooling the phase change magnetic ink to a solid state.

Abstract: An aqueous inkjet ink suitable for priming photo-images on both photo-glossy receivers and plain papers, said ink including at least 50% by weight water, between 0.5% and 8% by weight of 1,2-pentanediol, a humectant distinct from said 1,2-pentanediol, and between 0.2 and 5% by weight of a dispersed pigment colorant, said dispersed pigment colorant exhibiting an average volume weighted 50th percentile particle size of between 0.001 and 0.075 microns.

Abstract: The present invention provides an ink jet printer having storage for storing ink, a recording head including a nozzle for ejecting ink, and a passage between the storage and the recording head for conducting the ink. At least one of these components comprising an ink-contacting member that comprises an antioxidant of the following formula (1) of a concentration of 100 ppm or less: Further, an ink jet recording method using the ink jet printer causes such printer to eject droplets of an ink composition and attach the droplets to a recording medium.

Abstract: An ink set which includes an ink composition including a pigment, polymer particles having a glass transition temperature of 70° C. or more and a volume average particle size of 70 nm or lower, and a water-soluble polymerizable compound that undergoes polymerization when irradiated with an active energy ray; and a treatment liquid including an aggregating agent for aggregating components in the ink composition, and an image forming method, including an ink applying process for applying the ink composition; and a treatment liquid applying process for applying the treatment liquid, are provided.

Abstract: An aqueous ink composition having at least one of dispersed pigments and anionic charged polymer, and further including a lower level, relative to the concentration of pigment and anionic charged polymer, of a polyvalent metal oxide particle dispersion, wherein the ink composition has a pH of greater than 4 and the polyvalent metal oxide particles have a negative zeta potential at the pH of the ink composition. These ink compositions are effective in reducing the damage and failure of silicon-based inkjet print heads caused by ink-induced dissolution and stress cracking of the silicon-based materials found in the print heads.

Abstract: A process for preparing azaphthalocyanine or metallo-azaphthalocyanine dyes and salts thereof. Also novel compounds, inks, printing processes, printed materials (including color filters) and ink-jet cartridges.

Abstract: In an inkjet printing system using an ink which includes a coloring material dispersed in a solvent, it is aimed that printing density is improved by thickening the ink on a printing medium so as to stay the coloring material on the surface of the printing medium. An inkjet printing method is provided, in which 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, wherein the first ink includes at least a first organic solvent and an ?,?-unsaturated carbonyl compound, the second ink includes at least a second organic solvent and an organic compound reactive as a nucleophile with the ?,?-unsaturated carbonyl compound, and at least one of the first and second inks includes a coloring material.

Abstract: An inkjet printing apparatus is provided which can print images with no print quality variations. For this purpose, the fluid viscosity resistances between the print head and the print medium beneath respective nozzle arrays that occur as the print head moves in the forward direction are made equal to those that occur as the print head moves in the backward direction.

Abstract: An ink composition is provided that includes (A) a polymerizable silicone compound having an ethylenically unsaturated group and a silicone chain, (B) tetrahydrofurfuryl (meth)acrylate, and (C) a radical polymerization initiator. There are also provided an inkjet recording method that includes (a1) a step of discharging onto a recording medium the ink composition and (b1) a step of curing the ink composition by irradiating the discharged ink composition with actinic radiation, a printed material obtained by the inkjet recording method, and a process for producing a formed printed material that includes (a2) a step of forming an image on a support by discharging the ink composition by an inkjet method, (b2) a step of obtaining a printed material having a cured image on the support by irradiating the obtained image with actinic radiation so as to cure the ink composition, and (c2) a step of molding the printed material.

Abstract: Reactive inks and methods of generating an image on a substrate using both reactive and heat activated inks are presented. An image is printed on a substrate, without reacting the reagents in the ink. Subsequently, the reagents are reacted to fix the image to a substrate, with substantial permanency and fastness. Sublimation or similar heat activated dyes are printed are also printed on the substrate. The sublimation or similar heat activated dyes are activated, and have an affinity for polymer that is applied to the substrate.

Abstract: A high viscosity aqueous inkjet ink that is useful in ink jet printers. The ink comprises heat activated colorant solids that are not heat activated during the printing process, and are printed onto a substrate in the form of an image that can be transferred onto a subsequent or final substrate by applying heat and intimate contact between the two substrates. The ink can also be heat activated onto the substrate without further transfer by applying heat at the temperature that is suitable for the activation of the colorant.

Abstract: A liquid ejection apparatus includes: a liquid ejection head which ejects photo-curable liquid from nozzles; a first light applicator which applies light to an ejection target having received liquid ejected by the liquid ejection head; a waste tank which reserves therein liquid discharged from the liquid ejection head; and a second light applicator which applies light to liquid in the waste tank.

Abstract: A recording ink containing at least a solid component which contains a colorant and a resin and is a solid at 25° C., a liquid component which has a higher boiling point than that of water and is a liquid at 25° C. and water, wherein the total content of the liquid component in the recording ink is 20% by mass or less, the total content of the solid component in the recording ink is 20% by mass or more, and the total content of a resin component in the solid component is 40% by mass to 95% by mass relative to a total amount of the solid component is provided.

Abstract: An inkjet recording method is disclosed, in which the method includes: recording an image, on a recording medium, using two or more ink compositions each comprising at least a pigment, by applying the two or more ink compositions to an acidic surface of the recording medium at a dotting interval of 500 msec or less; wherein the recording includes forming at least a first color sub-image by applying at least one of the two or more ink compositions and the at least one of the two or more ink compositions includes a self-dispersing polymer having an acid value of from 70 to 120 mgKOH/g and a water-soluble organic solvent.

Abstract: The present invention provides a treatment liquid including: at least one acidic compound selected from an organic acidic compound or an inorganic acidic compound; and at least one compound selected from a nitrogen-containing heterocyclic compound or an organic mercapto compound; wherein the treatment liquid has a pH of from 0.5 to 2.0 at 25° C. and the ability to aggregate particles dispersed in an ink composition including at least one colorant and particles of at least one polymer.

Abstract: An aqueous ink composition for inkjet recording, including: a coloring material containing at least one selected from the group consisting of azo pigments represented by the following formula (1) and tautomers thereof, and salts and hydrates thereof; a dispersant; and a urethane-modified polyester resin wherein Z represents a divalent group derived from a 5- to 8-membered nitrogen-containing heterocycle; Y1, Y2, R11 and R12 each independently represent a hydrogen atom or a substituent; G1 and G2 each independently represent a hydrogen atom, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; and W1 and W2 each independently represent an alkoxy group, an amino group, an alkyl group or an aryl group.

Abstract: In accordance with one embodiment a self-erasing printing system comprises a substrate such as paper, a printer, a printer driver, and self-erasing ink. The self-erasing ink can comprise an acid-base indicator and a base whereby the ink is colored when printed but erases itself after a predetermined period of time. After the ink has self-erased the substrate may be reused.

Abstract: The invention provides an ink jet recording ink containing a self-dispersion pigment, to the surface of which an anionic functional group represented by the following general formula (I) has been bonded directly or through another atomic group, water, a water-soluble substance having a coefficient of hydrophilicity-hydrophobicity of 0.37 or more as defined by the following equation (A) and a water-soluble substance having a coefficient of hydrophilicity-hydrophobicity of 0.25 or less as defined by the equation (A), and having a surface tension of 34 mN/m or less.

Abstract: An ink composition contains a dye whose free acid is expressed by formula (1), lithium ions, and an aromatic compound having a carboxy group. In formula (1), Q represents a halogen atom, x represents an integer of 2 to 4, and y represents an integer of 1 to 3.

Abstract: The present invention relates to an electroless deposition of metallic silver on various plates. More particularly, in the present invention, by spraying a silver solution including ionic silver to be reduced into metallic silver and a reducing solution a reducing agent for reducing the silver solution at the same time to a predetermined region above a substrate, metallic silver particles having a diameter less than 30 ? are formed, and a silver layer is formed by a deposition of the nano-sized metallic silver. Since the silver layer includes nano-sized silver particles having a diameter less than 3 nm, a reflector having a high density, that is, surface roughness, can be manufactured. The reflector has a considerably excellent reflectance.

Abstract: A multi-phase system for creating a metallic effect on a substrate, includes applying to the substrate a first ink jet ink having a dispersion of reflective metallic particles in a suitable carrier system, to form a reflective coating layer; and applying a second ink jet ink over the reflective coating layer to form a protective coating layer. Optionally, an undercoat layer is printed on the substrate prior to applying the first ink jet ink. The second ink jet comprises at least one crosslinkable polymer or is otherwise energy curable. The second ink jet ink optionally imparts a color to the metallic image.

Abstract: The present invention provides an ink composition having excellent ink ejection stability and stretching property, curable with a high sensitivity by irradiation of radiation rays, and capable of forming an image excellent in rubfastness and blocking resistance, an inkjet recording method using the ink composition, and a printed article. The ink composition includes (a) a polymer having a siloxane structure and a polymerizable group on a side chain thereof, (b) a polymerizable compound, and (c) a photopolymerization initiator, and the inkjet recording method includes a step of ejecting the ink composition onto a recording medium to be recorded with an inkjet recording apparatus and a step of curing the ink composition by irradiating active radiation rays on the ejected ink composition.

Abstract: An ink-jet printing system includes an ink set having only cyan, magenta, yellow black and gray inks, and a medium having a substantially neutral color. A ratio of printed lightness of the gray ink to a lightness of the medium ranges from 0.3 to 0.7.

Abstract: An inkjet printing method includes in order the steps of: a) providing to an inkjet printer one or more colorless liquids and a white ink including a pigment with a refractive index greater than 1.60; b) mixing the white ink in a controlled amount with the one or more colorless liquids to form a white ink-mixture wherein the viscosity is reduced by at least 5 mPa·s by reference to the white ink when measuring the viscosity at 40° C. with a Brookfield DV-II+Pro at 12 rotations per minute; and c) printing the white ink-mixture with the inkjet printer onto an ink-receiver. Additionally, a color inkjet ink set includes the one or more colorless liquids and the white ink, and an inkjet printer for use in the inkjet printing method.

Abstract: Consumable reduction is achieved for a printing device by utilizing a processor (32), memory (34) and software for receiving input information representative of an image to be printed and generating output information representative of a reduced consumable image in response to consumable smear, spatial relationship between adjacent dots and an image quality degradation. Factors such as print medium characteristics, heat or humidity and composure of the consumable are considered in performing the consumable reduction.

Abstract: An aqueous inkjet printing fluid composition for use in an inkjet printer comprising a silicon-based material which contacts the aqueous printing fluid composition, comprising in a concentration sufficient to inhibit corrosion of the silicon-based material when contacted by the aqueous printing fluid composition a soluble metal ligand complex of Formula (I): wherein M represents a divalent or a trivalent metal; Z represents OH or CO2H; n represents an integer from 1-4; each Y may independently be chosen from the group consisting of halogen, cyano, carboalkoxy, alkyl, alkoxy, aryl, hetaryl, carboxy, hydroxy, sulfo and phospho, or any two of Y on adjacent carbons may be combined together to form a 5-7 atom carbo- or heterocyclic ring; and the number of ligands y is 2 or 3; with the proviso that at least one Y comprises a solubilizing group capable of imparting water solubility to the complex. The useful lifetime of microelectromechanical fluidic devices based on silicon fabrication is extended.

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: There is disclosed an ink set and method for printing an inkjet ink image on a nonporous substrate. The inkset and method comprise one or more inkjet inks comprising at least one first pigment-based inkjet ink having a first colorant load of a pigment and a polymeric latex binder; and at least one second pigment-based inkjet ink having a second colorant load of the pigment and a polymeric latex binder, the second colorant load being less than the first colorant load, and the second pigment-based inkjet ink applied to a substrate in an amount to provide a total ink loading of from about 10 g/m2 to about 30 g/m2.

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 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: A water-based ink for ink-jet recording includes a coloring agent, water, and a water-soluble organic solvent. In the water-based ink after drying, a phase (?) obtained by a tan ? measured at about 25° C. is constantly about 45 degrees or more. In other words, the phase (?) never becomes less than about 45 degrees at a strain amount of about 0.1% to about 100%.

Abstract: Disclosed is a nonaqueous ink jet ink that is suitable for printing (scratch resistance and resistance to alcohol wiping) on recording media of plastics such as polyvinyl chloride, is highly safe, can be used without posing any problem of odor, has excellent properties of ink ejection from an ink jet head, and can realize a good printed image quality. Also disclosed are a process for producing a nonaqueous ink jet ink and an ink jet recording method using the nonaqueous ink jet ink. The process for producing a nonaqueous ink jet ink is a process for producing a nonaqueous ink jet ink containing at least an organic solvent, a pigment, and a fixing resin. The process is characterized in that the fixing resin satisfies a b/a value of not more than 0.

Abstract: A liquid material arrangement method includes performing a first pattern generating step, a dot deleting step, and a liquid material arranging step. The first pattern generating step includes generating a first dot pattern in which a first prescribed number of dots is set according to the prescribed region. The dot deleting step includes deleting a second prescribed number of dots from the first prescribed number of dots to generate a second dot pattern. The liquid material arranging step includes arranging a liquid material in a prescribed region on a substrate by causing a nozzle and the substrate to scan in relative manner and discharging the liquid material from the nozzle based on the second dot pattern. The performing of the dot deleting step further includes deleting at least one prohibited dot with priority with the prohibited dot being determined based on discharge information of the nozzle determined in advance.

Abstract: The object of the present invention is to provide a water-based pigment dispersion containing a pigment, a dispersing agent, a resin emulsion, and water, the water-based pigment dispersion is subjected to a heat treatment. The present invention also provides a water-based pigment ink containing the water-based pigment dispersion, a dispersing agent, a resin emulsion, and water.

Abstract: A method of dynamically controlling a perceived ink color printed on a substrate can include mixing selected amounts of each of a polystyrene nano-sphere dopant component and a nano-particle dopant component with a clear fluid carrier component, the mixed components configured in real time to define an ink structure having a predetermined wavelength. The method can further include imaging the substrate by ejecting the mixed components onto the substrate, the perceived color of the imaged substrate corresponding to a reflected wavelength of the ink structure. In embodiments, each of the carrier and dopant components can be in a powder form suitable for fuser type imaging devices.

Abstract: An ink for ink-jet recording may contain a coloring agent and a marker. The coloring agent may contain a pigment. The marker may have a detector absorption peak for detecting the marker at a wavelength that is different from a wavelength of the maximum absorption peak of the coloring agent. The coloring agent and the marker may be contained in the ink in amounts that satisfy the following conditions (I) to (III): (I) about 1.2?A2/A3; (II) color difference (?E)?about 3; and (III) about 1?A2?about 10 in terms of a measurement optical path length of 1 mm, where A2 denotes an absorbance at the wavelength of the detector absorption peak of the marker, A3 denotes a baseline absorbance at the wavelength of the detector absorption peak of the marker.

Abstract: A inkjet recording apparatus includes a first inkjet head which ejects color ink having one of a hydrophobic property and an aqueous property; a second inkjet head which ejects colorless ink having the remaining the other property; and an ejection controller which controls the first inkjet head to eject the color ink on an image region and controls the second inkjet head to eject the colorless ink on an ejection region contacting the image region with a boundary therebetween. The ejection controller controls the first and second inkjet heads so that the colorless ink ejected from the second inkjet head reaches a second minute segment in the ejection region, the second minute segment adjacent to a first minute segment in the image region with the boundary interposed therebetween, before the color ink ejected from the first inkjet head reaches the first minute segment in the image region.

Abstract: A solvent-based ink composition for a thermal inkjet printhead includes (a) 55-90 wt. % of an organic solvent including a ketone and a C1 to C4 alcohol; and (b) 0.01-10 wt. % of a colorant.

Abstract: An ink set for ink-jet recording having a main ink and a sub ink. The main ink includes at least one of a polysaccharide and a polysaccharide derivative. The sub ink includes enzyme degrading at least one of the polysaccharide and the said polysaccharide derivative in the main ink.

Abstract: An ink set is provided which, when used in color ink-jet printing, can give a full-color printed image having a satisfactory hue and brightness and excellent in various fastness properties. More specifically, an ink set for ink-jet recording is provided that is an ink set of at least two colors which includes at least two ink compositions, i.e., a cyan ink composition and a magenta ink composition. The cyan ink composition contains a cyan dye which is a dye represented by the following formula (7) or a salt thereof. The magenta ink composition contains a magenta dye which is a dye represented by the following formula (6) or a salt thereof.

Abstract: The present invention relates to (1) a process for producing a water dispersion for ink-jet printing containing colorant-containing polymer particles which includes a step I of obtaining a dispersion of colorant-containing polymer particles; a step II of obtaining a water dispersion of the colorant-containing polymer particles from the dispersion obtained in the step I; a step III of mixing the water dispersion obtained in the step II with an organic solvent (B) to suitably control a relative dielectric constant of a mixed solvent in the resultant dispersion, thereby precipitating the colorant-containing polymer particles; and a step IV of separating precipitates obtained in the step III from the dispersion and re-dispersing the precipitates in a water-based solvent; (2) a water-based ink for ink-jet printing which is excellent in ejection stability and optical density; (3) a process for purifying a water dispersion for ink-jet printing; and (4) a process for producing a dispersion containing groups of fine p

Abstract: The present invention provides an ink composition including: (A) a polymerizable compound represented by the following formula (I); (B) a polymerizable compound having a structure that is different from that of the polymerizable component (A); and (C) a photoinitiator, wherein, in the formula (I), R represents a hydrogen atom or a methyl group, X represents a divalent organic group, m represents an integer of 1 or 2, and n represents an integer of 1 to 20.

Abstract: An image forming method includes the steps of: depositing an ink containing 10% or more and less than 30% of a water-soluble high-boiling-point organic solvent having an SP value of 28 or lower, onto a recording medium in accordance with an image signal, the ink having a viscosity of 10 cP or lower in a case where a temperature of the ink is 25° C.; removing water contained in the solvent of the ink on the recording medium, by a heating drying device; and heating and pressurizing the ink so as to fix the ink onto the recording medium.

Abstract: Methods and means for imaging on paper media are provided. A data file of an image to be printed is analyzed. A pattern for a clear fluid is determined according to the analysis. The pattern of clear fluid is applied to a paper media traveling in a particular direction, wherein the pattern is generally elongated along the direction of travel. The pattern of clear fluid is defined by a maximum width that is generally equal to the maximum width of the image to be formed. One or more colored inks are applied such that the image is formed and is supported by the paper media. The paper media exhibits reduced cockle as a result of the pattern of clear fluid.

Abstract: An image forming apparatus includes a fluid receiving member having fluid receiving cells in which the fluid receiving cells are configured to receive at least one of an ink repellant and an ink, a fluid ejector unit configured to eject the ink repellant to a first set of the fluid receiving cells, and an inking unit configured to apply the ink to a second set of the fluid receiving cells.

Abstract: An inkjet recording method, including printing with an ink including a chromatic ink, an achromatic ink, and a resin ink; the resin ink contains at least thermoplastic resin particles that are insoluble in water but compatible with water-soluble solvents for resins as well as water-soluble solvent for resins; the inks all contain a silicon surfactant and an acetylene glycol surfactant that has an HLB value equal to or less than 6; and the printing method includes a step of drying performed during and/or after printing.

Abstract: An ink-jet recording liquid composition which is used together with a colored ink to form images and is capable of causing reaction upon contact with the colored ink; the composition being characterized by containing at least (a) a polyvalent metal salt, (b) a substance selected from cryptands and (c) a liquid medium; or an ink-jet recording ink characterized by containing at least (a) a polyvalent metal salt, (b) a substance selected from cryptands, (c) a liquid medium and (d) a coloring material.

Abstract: A degassing method of an ink-jet ink comprising at least a pigment, and having a viscosity of not less than 10 mPa·second and not more than 50 mPa·second at 25° C., comprising the step of: carrying out degassing employing an external refluxing type hollow fiber degassing module under a condition of a pressure loss of the hollow fiber degassing module during degassing being less than 0.1 MPa.

Abstract: The present invention provides an inkjet recording ink containing at least a pigment dispersion liquid A containing at least a first carbon black, a dispersant, and water, and a self-dispersible pigment dispersion liquid B which contains a second carbon black having a surface functional group, wherein a mass ratio (Ac:Bc) of the amount of the first carbon black (Ac) in the pigment dispersion liquid A to the amount of the second carbon black (Bc) having a surface functional group in the self-dispersible pigment dispersion liquid B is 98:2 to 50:50.

Abstract: To provide a method for fixing an image, wherein the image has a high fastness even immediately after being recorded, and is free from inconveniences such as thermal influence or unfavorable curing inherent to the conventional fixing device, as well as safety problems. To achieve such an object, in a method for fixing an image recorded on a recording medium with a recording material containing a component curable by a plasma processing, the image is fixed on the recording medium by the plasma processing at a normal pressure.