| abstract |
To provide an ink capable of achieving both high optical density and scratch resistance of an image at a high level. An ink containing a self-dispersing pigment, polyurethane resin particles, a surfactant, a water-soluble organic solvent, and water, wherein the surfactant has a HLB value required by the Griffin method of 11 or less. A glycol monofluorinated alkyl ether, wherein the water-soluble organic solvent is glycerin, ethylene glycol, diethylene glycol, polyethylene glycol having a weight average molecular weight of 10,000 or less, 1,3-propanediol, 1,4-butanediol An ink comprising at least one water-soluble organic solvent selected from the group consisting of diglycerol and having a content greater than the total content of water-soluble organic solvents other than the group. [Selection figure] None |