Abstract: Disclosed is a recording liquid including an aqueous pigment dispersion, which has high dispersion stability and high discharge properties and gives a print with superior gloss. Specifically, the aqueous pigment dispersion contains a pigment; a polymer containing cationic monomer structural units and hydrophobic monomer structural units (hydrophobic-group-containing cationic polymer); and a polymer containing anionic monomer structural units and hydrophobic monomer structural units (hydrophobic-group-containing anionic polymer), in which the ratio of the number of anionic groups in the hydrophobic-group-containing anionic polymer to the number of cationic groups in the hydrophobic-group-containing cationic polymer is 1.0 or more and 8 or less. The molar ratio of the hydrophobic monomer structural units to the anionic monomer structural units in the hydrophobic-group-containing anionic polymer is from 5/95 to 50/50 or the content of the pigment is 51 percent by weight or more based on the solids content.

Abstract: Problem: To provide a microencapsulated color material for an ink composition which is excellent in dispersion stability, ejection stability and color developability, excellent in fastness and rubbing resistance of images, and hard to cause blurs of images, and can provide recorded matter having high print density; an ink composition using the color material; a production process thereof; an ink jet recording process; recorded matter; and microencapsulated matter.

Abstract: A recording liquid capable of giving a printed matter which is high in printing density, is suppressed in blur, has high printing quality, and has good fastness of a recorded matter including light fastness, water fastness and the like and having a low viscosity, good discharge properties and excellent storage stability. The invention is concerned with a polyvinyl alcohol based block copolymer represented by the following general formula (1), a pigment dispersion aqueous liquid containing this polyvinyl alcohol based block copolymer and a pigment in an aqueous medium, and a recording liquid containing this pigment dispersion aqueous liquid. wherein A, B, X1, X2, X3, X4, m1, and m2 have the same meanings as defined in the specification.

Abstract: A recording liquid capable of giving a printed matter which is high in printing density, is suppressed in blur, has high printing quality, and has good fastness of a recorded matter including light fastness, water fastness and the like and having a low viscosity, good discharge properties and excellent storage stability. The invention is concerned with a polyvinyl alcohol based block copolymer represented by the following general formula (1), a pigment dispersion aqueous liquid containing this polyvinyl alcohol based block copolymer and a pigment in an aqueous medium, and a recording liquid containing this pigment dispersion aqueous liquid. wherein A, B, X1, X2, X3, X4, m1, and m2 have the same meanings as defined in the specification.

Abstract: An ink-jet recording liquid using a dye and a pigment, which is excellent in dispersibility and has good printing performance and storage stability, and a process for producing the same are provided. There are provided an ink-jet recording liquid containing a pigment, a dye and a surfactant which are incorporated in an aqueous medium, characterized in that (1) the pigment and the dye at least partly comprise a pigment and a dye reversibly adsorbed thereon without involving a chemical reaction, (2) the dye reversibly adsorbed on the pigment without involving a chemical reaction contains a dye having a dye adsorption shown by the following formula (1) of 0.02 g/g or more, and (3) as the surfactant, a nonionic surfactant and an anionic surfactant coexist; and a process for producing the same.

Abstract: An ink-jet recording liquid using a dye and a pigment, which is excellent in dispersibility and has good printing performance and storage stability, and a process for producing the same are provided. There are provided an ink-jet recording liquid containing a pigment, a dye and a surfactant which are incorporated in an aqueous medium, characterized in that (1) the pigment and the dye at least partly comprise a pigment and a dye reversibly adsorbed thereon without involving a chemical reaction, (2) the dye reversibly adsorbed on the pigment without involving a chemical reaction contains a dye having a dye adsorption shown by the following formula (1) of 0.02 g/g or more, and (3) as the surfactant, a nonionic surfactant and an anionic surfactant coexist; and a process for producing the same.