Abstract: An UV-LED curable clear ink composition for ink jet printing including 44 to 80% by mass of a photo-polymerizable mono-functional monomer, 15 to 50% by mass of a photo-polymerizable poly-functional monomer and 5 to 15% by mass of an acylphosphine photo-polymerization initiator, and having a viscosity at 25° C. of 1 to 50 mPa·s, wherein the photo-polymerizable mono-functional monomer and the photo-polymerizable poly-functional monomer include a photo-polymerizable monomer having at least one of functional groups including an amide group and an amino group, and the photo-polymerizable monomer is contained in an amount of 5 to 20% by mass based on a total amount of photo-polymerizable mono-functional monomer and photo-polymerizable poly-functional monomer.

Abstract: A cleaning fluid for cleaning a site to which ink adheres in an inkjet printer which ejects aqueous inkjet ink containing a pigment and alkali-soluble resin having an acid group in a molecule, wherein the cleaning fluid contains an amphoteric surfactant, a basic compound, and water, a pH range of the cleaning fluid is from 9 to 12, the amphoteric surfactant is at least one selected from a group consisting of dimethyl lauryl amine oxide, lauryl dimethyl amino acetic acid betaine and a 2-al-kyl-n-carboxymethyl-n-hydroxyethyl imidazolinium betaine and is contained in an amount of 0.1 to 3% by mass to the total amount of the cleaning fluid.

Abstract: A cleaning fluid for cleaning a site to which ink adheres in an inkjet printer which ejects aqueous inkjet ink containing a pigment and alkali-soluble resin having an acid group in a molecule, wherein the cleaning fluid contains an amphoteric surfactant, a basic compound, and water, a pH range of the cleaning fluid is from 9 to 12, the amphoteric surfactant is at least one selected from a group consisting of dimethyl_lauryl_amine oxide, lauryl_dimethyl_amino acetic acid betaine and a 2-al-kyl-n-carboxymethyl-n-hydroxyethyl_imidazolinium betaine and is contained in an amount of 0.1- to 3% by mass to the total amount of the cleaning fluid.

Abstract: Provided is an ink set having excellent curing properties under LED light, providing printed matter that does not fade or discolor due to a photopolymerization initiator, suppressing color bleeding during image forming, exhibiting favorable adhesion towards a polyvinyl chloride sheet, enabling cock ring to be efficiently suppressed, and demonstrating an extremely low viscosity, high flash point and low skin irritation. The present invention pertains to an ink set containing at least two compositions selected from the group consisting of a yellow ink composition, a magenta ink composition, a cyan ink composition, a black ink composition, a white ink composition, and a clear ink composition, the compositions having the predetermined structure as specified in claim 1, wherein the flash point of the ink compositions is 70° C. or higher, and the viscosity (25° C.) is 5 mPa-s or lower.

Abstract: A process for producing a resin-coated pigment capable of providing an ink and a paint being superior in dispersion stability of a pigment and having rapid drying property, high gloss and density without containing those such as an organic solvent and a salt that cause the lowering of performance of pigment dispersion, characterized in that a pigment is dispersed in an aqueous solution in which an anionic group-containing resin is dissolved in the presence of a basic compound and then, the anionic group-containing resin is precipitated on the surface of the pigment by removing the basic compound in the aqueous solution, using an ion exchange means.

Abstract: A photocurable ink composition for inkjet printing is obtained that has superior curability with respect to light from a light-emitting diode, has favorable adhesion to a polyvinyl chloride-based sheet, and is able to adequately inhibit the occurrence of cockling.

Abstract: The present invention provides an organic solvent-based concentrated ink composition for gravure printing which shows good print density, printability, and laminatability even in gravure printing using a shallow cylinder. The organic solvent-based concentrated ink composition for gravure printing mainly includes a pigment; binder resin; and an organic solvent. The pigment includes at least one of an organic pigment and an inorganic pigment. The binder resin includes polyurethane resin. A solution obtainable by dissolving 30 parts by mass of the polyurethane resin in 70 parts by mass of the organic solvent has a viscosity of 100 to 500 mPa·s/25° C. The concentrated ink composition has a viscosity of 10 to 1000 mPa·s/25° C. and has a viscosity in gravure printing of 12 to 23 s/25° C. in terms of the efflux time from a Zahn cup #3.

Abstract: The present invention provides a method for producing a liquid developer for electrophotography or electrostatic recording obtained by a coacervation method, which sufficiently maintains the charging property and has good dispersion stability of colored resin particles, as well as a liquid developer obtained by the method. A method for producing a liquid developer by a coacervation method, wherein a colored resin particle is dispersed in an insulating hydrocarbon dispersion medium in the presence of a particle dispersant and an acid group-containing resin, and the particle dispersant is a reaction product of a polyamine compound and a self-condensation product of a hydroxycarboxylic acid.

Abstract: The present invention has its object to provide a treatment solution for inkjet textile printing that causes few remaining marks even when applied to a fabric. The present invention relates to a treatment solution for inkjet textile printing, the treatment solution including at least: 1) a water-soluble polyvalent metal salt; 2) at least one resin component selected from the group consisting of a nonionic resin emulsion, an anionic resin emulsion, and a carboxymethyl cellulose; 3) at least one surfactant component selected from the group consisting of a nonionic surfactant, an anionic surfactant, and an amphoteric surfactant; and 4) an aqueous medium, the treatment solution being applied to a fabric before printing of an ink composition for inkjet textile printing.

Abstract: The object of the invention is to provide a white ink composition for ink jet textile printing by which even if printing is carried out without discoloring the dye of textile piece, the whiteness degree of a dyed article obtained is high and the dyed article superior in coating film durability and laundering fastness is further obtained without losing the drape of the textile piece. The invention is directed to a white ink composition for ink jet textile printing including a white pigment, a polymer dispersant, an anionic resin emulsion and an aqueous medium, wherein the polymer dispersant is a polymer dispersant (A) obtained by neutralizing a anionic water-soluble resin having a glass transition temperature of 0 to 80° C.

Abstract: Production process for a liquid developer for use in electrophotograph or electrostatic recording by coacervation method. The process can produce a liquid developer in which a coloring agent (e.g., a pigment) is included completely within a resin particle by distillation of a solvent while retaining the state where the coloring agent is finely dispersed and the resulting colored resin particle is small in particle size with excellent dispersion stability, and excellent optical properties.

Abstract: An object of the present invention is to provide a carbodiimide type compound having high dispersibility and dispersion stability of pigments, fine resin particles, and pigment-resin composite fine particles particularly in a silicone dispersion medium; a pigment dispersion composition and a pigment-resin composite fine particles-containing dispersion composition preferably usable in a wide range of fields such as inks for solvent ink jet, liquid developers, and the like by using the compound; and a liquid developer using such a pigment dispersion composition and/or pigment-resin composite fine particles-containing dispersion composition. The present invention provides a carbodiimide type compound obtained by introducing a polysiloxane chain by reaction of a functional group of a polysiloxane chain-containing compound having the functional group reactive with a carbodiimide group with a carbodiimide group of a carbodiimide compound having a carbodiimide equivalent weight of 100 to 50000.

Abstract: The object of the present invention is to provide an ink composition for heatset offset printing which has an excellent drying property, does not cause skinning during storage of ink composition, and has excellent stability on press in printing. The present invention is an ink composition for heatset offset printing containing a pigment, a binder resin, a petroleum solvent, and at least one kind of vegetable oil component selected from the group consisting of a vegetable oil and a fatty acid ester thereof, the content of the vegetable oil component being 20% by mass or less, and the ink composition further containing: 0.008 to 0.7% by mass of a metal soap drier based on the mass of the metal contained in the drier; 0.008 to 12% by mass of at least one kind selected from the group consisting of a polyvalent carboxylic acid, a derivative thereof, tocopherol, and tocotrienol; and 0.08 to 12% by mass of a phenolic antioxidant.

Abstract: A photocurable ink composition for inkjet printing is obtained that has superior curability with respect to light from a light-emitting diode, has favorable adhesion to a polyvinyl chloride-based sheet, and is able to adequately inhibit the occurrence of cockling.

Abstract: The present invention provides a method of producing an ink composition for offset printing with use of a crude copper phthalocyanine pigment and/or an active crude copper phthalocyanine pigment and without use of a pigment dispersion resin that requires additional cost, to produce an ink composition which provides a highly tinted and bright image. The method includes the steps of: premixing a premix component through stirring so as to obtain a pigment mixture, the premix component containing a crude copper phthalocyanine pigment and/or an active crude copper phthalocyanine pigment, at least one binder resin selected from the group consisting of a rosin-modified phenolic resin, a rosin-modified maleic acid resin, a petroleum resin, and an alkyd resin, and an oil component; grinding and milling the pigment mixture obtained by the premixing, using a bead mill with grinding media of beads each having a size of 0.1 mm or larger and smaller than 1.5 mm, at a temperature within the range of 0° to 180° C.

Abstract: An object of the present invention is to provide a photocurable ink composition for ink-jet printing, which exhibits excellent curing properties in response to light from light emitting diodes (LEDs), is adhered well to a polyvinyl chloride sheet such as tarpaulin or a vinyl chloride resin sheet, can sufficiently reduce cockling, has a low viscosity but a high flash point, and can achieve both of good jetability at a normal temperature and good safety properties owing to these properties. The ink composition for ink-jet printing includes at least: photopolymerizable compounds; a photopolymerization initiator; and a sensitizer, and has a flash point of higher than 60° C. when measured with a SETA closed-cup flash point tester by a method in accordance with JIS K2256. The photopolymerizable compounds include 2-methoxyethyl acrylate and/or 2-ethoxyethyl acrylate, and N-vinyl caprolactam, and an acrylated amine compound having two photopolymerizable functional groups and two amino groups in the molecule.

Abstract: The present invention has its object to provide a treatment solution for inkjet textile printing that causes few remaining marks even when applied to a fabric. The present invention relates to a treatment solution for inkjet textile printing, the treatment solution comprising at least: 1) a water-soluble polyvalent metal salt; 2) at least one resin component selected from the group consisting of a nonionic resin emulsion, an anionic resin emulsion, and a carboxymethyl cellulose; 3) at least one surfactant component selected from the group consisting of a nonionic surfactant, an anionic surfactant, and an amphoteric surfactant; and 4) an aqueous medium, the treatment solution being applied to a fabric before printing of an ink composition for inkjet textile printing.

Abstract: The present invention provides a coating material composition with a gas-barrier property which comprises, as essential components, an ethylene-vinyl alcohol copolymer (A) obtained by saponifying an ethylene-vinyl acetate copolymer, an inorganic layered compound (B) and a solvent, wherein the total amount of (A) and (B) is 1 to 30% by mass and the mass ratio (A)/(B) is (30/70) to (50/50). The coating material provides gas-barrier properties to packaging materials.

Abstract: The present invention provides a method for producing a liquid developer for electrophotography or electrostatic recording obtained by a coacervation method, which sufficiently maintains the charging property and has good dispersion stability of colored resin particles, as well as a liquid developer obtained by the method. A method for producing a liquid developer by a coacervation method, wherein a colored resin particle is dispersed in an insulating hydrocarbon dispersion medium in the presence of a particle dispersant and an acid group-containing resin, and the particle dispersant is a reaction product of a polyamine compound and a self-condensation product of a hydroxycarboxylic acid.

Abstract: It is an object of the present invention to provide a liquid developer in which in liquid developers for electrophotography or electrostatic recording obtained using the coacervation method, electric resistance of the liquid developer and the electrophoretic property or the charging characteristic of the toner particles are adequately maintained, and the dispersibility of a pigment and the dispersion stability of the toner particles are good. A liquid developer formed by dispersing colored resin particles comprising at least a pigment, a dispersant and a resin in a hydrocarbon insulating medium using a coacervation method, wherein said dispersant is a carbodiimide compound having at least one basic nitrogen-containing group and at least one polyester side chain introduced through a reaction with a carbodiimide group in its molecule, and said resin is an acid group-containing resin and the acid value of the resin is 1 to 100.