| abstract |
PROBLEM TO BE SOLVED: To provide an ink capable of satisfying both the optical density and scratch resistance of an image at a high level. An ink containing a self-dispersing pigment, resin particles, a surfactant, a water-soluble organic solvent, and water, wherein the amount of anionic functional groups on the surface of the resin particles is 0.2 mmol / g or less. The surfactant contains a fluorosurfactant represented by the general formula (1) and an HLB value determined by the Griffin method of 11 or less, and the water-soluble organic solvent is glycerin, ethylene glycol And at least one water-soluble organic solvent selected from polyethylene glycol having a weight average molecular weight of 10,000 or less, 1,3-propanediol, 1,4-butanediol, and diglycerol. And ink. [Selection] Figure 1 |