Abstract: An inkjet ink for textile printing includes: water; an aqueous organic solvent; and colored resin particles, in which the colored resin particles contain a urethane resin and a dye, the dye containing at least one dye selected from the group consisting of an oil-soluble dye, a disperse dye, and a vat dye, and the urethane resin has an acid value of 5 to 90 mgKOH/g.

Abstract: Provided is an image forming method including forming an image by jetting, onto a recording medium, an ink composition as liquid droplets each having a volume of from 60 pL to 120 pL, by using an inkjet head, the ink composition including a water-soluble polymer having a number average molecular weight of 1,000 or more, a water-soluble organic solvent, and a surfactant having a HLB in a range of from 3 to 12 and a number average molecular weight of less than 1,000, and the ink composition having a viscosity at 30° C. in a range of from 10 mPa·s to 14 mPa·s.

Abstract: Provided is an image forming method capable of obtaining an image which has superior adhesion with a recording substrate having ink non-absorbency or low ink-absorbency and has superior scratch resistance. The ink forming method includes an ink application step of applying a water-based ink containing polymer particles, an amine compound having at least one hydroxyl group, a colorant, and water, onto a recording substrate having ink non-absorbency or low ink-absorbency.

Abstract: Provided is an image forming method capable of obtaining an image which has superior adhesion with a recording substrate having ink non-absorbency or low ink-absorbency and has superior scratch resistance. The ink forming method includes an ink application step of applying a water-based ink containing polymer particles, an amine compound having at least one hydroxyl group, a colorant, and water, onto a recording substrate having ink non-absorbency or low ink-absorbency.

Abstract: The invention provides an inkjet ink composition, including at least: a water-soluble polymer which has a number average molecular weight of 1,000 or more; particles which have a polymerizable group; a colorant; and water, a ratio of a content of the particles to a content of the water-soluble polymer in terms of mass being from 0.6 to 3.5, and a viscosity of the inkjet ink composition at 30° C. being from 10 mPa·s to 14 mPa·s. The invention further provides an image recording method, including at least imparting the inkjet ink composition onto a recording medium by jetting, from an inkjet head, the inkjet ink composition at a droplet volume of from 10 pL to 120 pL. The invention further provides an image-recorded material, including at least an image recorded, on a recording medium, by the image recording method.

Abstract: An ink composition is disclosed which includes a pigment, self-dispersing resin particles including a hydrophilic constituent unit and a hydrophobic constituent unit, at least two nonionic surfactants including (a) a nonionic surfactant having an HLB of from 15 to 19 and (b) a nonionic surfactant having an HLB of from 10 to less than 15, a water-soluble organic solvent, and water. An ink set and an image forming method are also disclosed.

Abstract: The present invention provides an image forming method including an ink applying process that applies a water-based ink containing at least polymer particles, wax particles having a ratio of from 0.5% by mass to less than 8% by mass with respect to the total amount of the ink, colorant, and water, by an inkjet method (inkjetting), onto a recording base material which is an assembly of a non-absorptive or low-absorptive fiber material.

Abstract: An ink jet pigment ink having at least one low-molecular compound represented by specific formulae and a polymer having at least one polyethylene oxide block structure, wherein a viscosity of the ink-jet pigment ink at 65° C. increases to 100 mPa·s or more in response to heating.

Abstract: An ink composition is disclosed which includes a pigment, self-dispersing resin particles including a hydrophilic constituent unit and a hydrophobic constituent unit, at least two nonionic surfactants including (a) a nonionic surfactant having an HLB of from 15 to 19 and (b) a nonionic surfactant having an HLB of from 10 to less than 15, a water-soluble organic solvent, and water. An ink set and an image forming method are also disclosed.

Abstract: An ink jet pigment ink having at least one low-molecular compound represented by specific formulae and a polymer having at least one polyethylene oxide block structure, wherein a viscosity of the ink-jet pigment ink at 65° C. increases to 100 mPa·s or more in response to heating.

Abstract: An ink-jet pigment ink containing at least one tri-block copolymer of polyethylene oxide-polypropylene oxide-polyethylene oxide having a number-average molecular weight of 8,000 or more and 30,000 or less and a content of polyethylene oxide of 60% by mass or more and 90% by mass or less with respect to the total mass of the copolymer, wherein a viscosity of the ink-jet pigment ink increases by heating.

Abstract: Organic pigment fine particles, having capability of self-dispersion, having an organic pigment and a polymer compound, the organic pigment fine particles of being nanometer-sized fine particles obtained by mixing an organic pigment solution and a second solvent, thereby to precipitate the fine particles in the mixed liquid, the organic pigment solution prepared by dissolving the organic pigment and the polymer compound in a first solvent, the second solvent of being served as a poor solvent for the organic pigment and being compatible with the first solvent, in which a compound insoluble in the second solvent is used as the polymer compound, and the organic pigment fine particles are provided with a capability of self-dispersing in a third solvent different from any of the first solvent and the second solvent.

Abstract: A dispersion of a water-insoluble colorant containing: a medium containing water; fine particles of the water-insoluble colorant; and a polymer compound or a surfactant that includes at least one kind of electron-withdrawing group or group of atoms represented by any one of formulae (I) to (IV) as its hydrophilic part: wherein at least one of X1 and X2 represents an electron-withdrawing linking group on the condition that when at least one of X1 and X2 is not the linking group, the at least one of X1 and X2 represents an electron-withdrawing substituent; R1 represents a hydrogen atom or a substituent; and M represents a hydrogen atom or a metal atom.

Abstract: An azo compound or a tautomer thereof, wherein the azo compound is represented by the following Formula (1). In Formula (1), R1 represents a hydrogen atom, alkyl group, aryl group, acyl group, carbamoyl group, alkylsulfonyl group, arylsulfonyl group, or heterocyclic group; R2 represents —NR5R6 or —OR7; R5 and R6 each independently represent a hydrogen atom, alkyl group, aryl group, acyl group, carbamoyl group, alkylsulfonyl group, or arylsulfonyl group; R7 represents an alkyl group or aryl group; R3 represents a hydrogen atom, alkyl group, aryl group, alkoxy group, aryloxy group, acylamino group, carbamoylamino group, alkylsulfonylamino group, or arylsulfonylamino group; n is an integer of 3 to 5; and each R4, of which there are n in number, independently represents an alkyl group, aryl group, alkoxy group, aryloxy group, amino group, alkylthio group, arylthio group, acylamino group, alkylsulfonylamino group, or arylsulfonylamino group, and one R4 may bind to another R4 forming a ring.

Abstract: An azo compound or a tautomer thereof, wherein the azo compound is represented by the following Formula (1). In Formula (1), R1 represents a hydrogen atom, alkyl group, aryl group, acyl group, carbamoyl group, alkylsulfonyl group, arylsulfonyl group, or heterocyclic group; R2 represents —NR5R6 or —OR7; R5 and R6 each independently represent a hydrogen atom, alkyl group, aryl group, acyl group, carbamoyl group, alkylsulfonyl group, or arylsulfonyl group; R7 represents an alkyl group or aryl group; R3 represents a hydrogen atom, alkyl group, aryl group, alkoxy group, aryloxy group, acylamino group, carbamoylamino group, alkylsulfonylamino group, or arylsulfonylamino group; n is an integer of 3 to 5; and each R4, of which there are n in number, independently represents an alkyl group, aryl group, alkoxy group, aryloxy group, amino group, alkylthio group, arylthio group, acylamino group, alkylsulfonylamino group, or arylsulfonylamino group, and one R4 may bind to another R4 forming a ring.