WATER-INSOLUBLE COLORANT DISPERSION AND PRODUCTION METHOD THEREOF, AND RECORDING LIQUID, INK SET, PRINTED ARTICLE, IMAGE-FORMING METHOD AND IMAGE-FORMING APPARATUS USING THE SAME
First Claim
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1. A method of producing a water-insoluble colorant dispersion, comprising the steps of:
- providing a solution of a water-insoluble colorant dissolved in an aprotic water-soluble organic solvent in the presence of an alkali,providing an aqueous medium of a polymer compound dissolved therein, which polymer compound has at least one acid group selected from the group consisting of a carboxylic acid group, a sulfonic acid group, a hydroxyl group, and a phosphoric acid group, as its hydrophilic group, andbringing the solution and the aqueous medium in contact with each other, to form fine particles of the water-insoluble colorant in a medium including water, thereby obtaining a dispersion comprising the fine particles dispersed therein.
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Abstract
A method of producing a water-insoluble colorant dispersion, having the steps of:
- providing a solution of a water-insoluble colorant dissolved in an aprotic water-soluble organic solvent in the presence of an alkali,
- providing an aqueous medium of a polymer compound dissolved therein, which polymer compound has at least one acid group selected from the group consisting of a carboxylic acid group, a sulfonic acid group, a hydroxyl group, and a phosphoric acid group, as its hydrophilic group, and
- bringing the solution and the aqueous medium in contact with each other, to form fine particles of the water-insoluble colorant in a medium including water, thereby obtaining a dispersion including the fine particles dispersed therein.
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38 Claims
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1. A method of producing a water-insoluble colorant dispersion, comprising the steps of:
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providing a solution of a water-insoluble colorant dissolved in an aprotic water-soluble organic solvent in the presence of an alkali, providing an aqueous medium of a polymer compound dissolved therein, which polymer compound has at least one acid group selected from the group consisting of a carboxylic acid group, a sulfonic acid group, a hydroxyl group, and a phosphoric acid group, as its hydrophilic group, and bringing the solution and the aqueous medium in contact with each other, to form fine particles of the water-insoluble colorant in a medium including water, thereby obtaining a dispersion comprising the fine particles dispersed therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification