Patent ID: 8178597

Claim:
An aqueous inkjet recording ink comprising pigment particles coated with a water-insoluble resin, water, and a water-soluble organic solvent comprising at least one hydroxy group, wherein the water-insoluble resin has a salt-forming group and a structural unit which is derived from a methacrylate and has an aromatic ring linked via a linking group to an atom in the main chain of the water-insoluble resin, the structural unit being from 40% to less than 75% by mass relative to the total mass of the water-insoluble resin; the water-insoluble resin satisfies the condition that when the water-insoluble resin in an amount of 5.36 g, an organic solvent that is 47.14 g of methylethylketone, one equivalent of a neutralizing agent with respect to the salt-forming group, and water are mixed with a total content of the water-insoluble resin and the organic solvent being 35% by mass relative to the total mass of the mixture, an emulsion is formed without precipitation of the water-insoluble resin, and after the emulsion is allowed to stand for three hours, a transparent single phase is formed, or two separate phases are formed and at least an aqueous phase of the two phases is transparent; and the term transparent means a property in which the amount of light that has passed through an aqueous phase having a thickness of 1 cm is at least 85% of the amount of the incident light.