Provided is an aqueous inkjet ink, including: a colorant; a water-soluble organic solvent; a surfactant; and water, wherein the water-soluble organic solvent includes a diol having 2 to 5 carbon atoms, and a hexylene glycol, and the surfactant includes an acetylenediol having an HLB value of 10 or less.

Provided is an aqueous inkjet ink, including: a colorant; a water-soluble organic solvent; a surfactant; and water, wherein the water-soluble organic solvent includes a diol having 2 to 5 carbon atoms, and a hexylene glycol, and the surfactant includes an acetylenediol having an HLB value of 10 or less.

Provided is an aqueous ink for ink jet that can record an image excellent in a color developability by suppressing a bronze phenomenon derived from a carbon black. The aqueous ink for ink jet contains: a self-dispersible carbon black; and a resin particle formed of an acrylic resin. The carbon black has a DBP oil absorption of 120 mL/100 g or more, the acrylic resin particle has a glass transition temperature of 30 C. or more, and a mass ratio of a content (% by mass) of the resin particle to a content (% by mass) of the carbon black is 0.10 times or more to 2.0 times or less.

Provided is an aqueous ink for ink jet that can record an image excellent in a color developability by suppressing a bronze phenomenon derived from a carbon black. The aqueous ink for ink jet contains: a self-dispersible carbon black; and a resin particle formed of an acrylic resin. The carbon black has a DBP oil absorption of 120 mL/100 g or more, the acrylic resin particle has a glass transition temperature of 30 C. or more, and a mass ratio of a content (% by mass) of the resin particle to a content (% by mass) of the carbon black is 0.10 times or more to 2.0 times or less.

Provided are an ink jet ink composition containing a monomer A represented by formula (A), a monomer B that is a radical-polymerizable monomer including an alicyclic structure and not including a heterocyclic structure, and a monomer C that is a radical-polymerizable monomer including a heterocyclic structure, the total content of the monomer A, the monomer B, and the monomer C being 60 mass % or more relative to the total amount of the composition, and applications thereof. R.sup.1 to R.sup.4 each independently represent a hydrogen atom or an organic group having 1 to 10 carbon atoms, and n represents an integer of 1 to 3. When n is 2 or 3, two or three R.sup.3's may be the same or different, and two or three R.sup.4's may be the same or different. ##STR00001##

Provided are an ink jet ink composition containing a monomer A represented by formula (A), a monomer B that is a radical-polymerizable monomer including an alicyclic structure and not including a heterocyclic structure, and a monomer C that is a radical-polymerizable monomer including a heterocyclic structure, the total content of the monomer A, the monomer B, and the monomer C being 60 mass % or more relative to the total amount of the composition, and applications thereof. R.sup.1 to R.sup.4 each independently represent a hydrogen atom or an organic group having 1 to 10 carbon atoms, and n represents an integer of 1 to 3. When n is 2 or 3, two or three R.sup.3's may be the same or different, and two or three R.sup.4's may be the same or different. ##STR00001##

An aqueous inkjet ink composition contains a pigment, an alkali-soluble resin, a polyolefin resin emulsion, a basic compound, an aqueous medium, and a surfactant, wherein the alkali-soluble resin is a copolymer of acrylic acid/lauryl acrylate/styrene; a glass transition temperature of the alkali-soluble resin is 45 C. to 95 C.; an average grain size of the polyolefin resin emulsion is 5 to 300 nm; a solids content of the polyolefin resin emulsion is 0.5 to 5.0 percent by mass in the aqueous inkjet ink composition; and the surfactant contains at least an acetylenediol-based surfactant. The aqueous inkjet ink composition is adapted to offering excellent high-gap discharge stability, antifouling property, adhesion, drying property, abrasion resistance, discharge stability, and preservation stability, even when printed on nonabsorbent media.

An aqueous inkjet ink composition contains a pigment, an alkali-soluble resin, a polyolefin resin emulsion, a basic compound, an aqueous medium, and a surfactant, wherein the alkali-soluble resin is a copolymer of acrylic acid/lauryl acrylate/styrene; a glass transition temperature of the alkali-soluble resin is 45 C. to 95 C.; an average grain size of the polyolefin resin emulsion is 5 to 300 nm; a solids content of the polyolefin resin emulsion is 0.5 to 5.0 percent by mass in the aqueous inkjet ink composition; and the surfactant contains at least an acetylenediol-based surfactant. The aqueous inkjet ink composition is adapted to offering excellent high-gap discharge stability, antifouling property, adhesion, drying property, abrasion resistance, discharge stability, and preservation stability, even when printed on nonabsorbent media.

Provided are an ink jet ink containing water and particles which contain a polymer P having an acid group and a polymerizable compound A, in which the polymerizable compound A has two or more ethylenically unsaturated groups in one molecule, and has a weight-average molecular weight of 1000 or more; and applications thereof.

Provided are an ink jet ink containing water and particles which contain a polymer P having an acid group and a polymerizable compound A, in which the polymerizable compound A has two or more ethylenically unsaturated groups in one molecule, and has a weight-average molecular weight of 1000 or more; and applications thereof.