Patent ID: 8679243

Claim:
An aqueous pigment dispersion used for preparing an ink jet recording aqueous ink, the aqueous pigment dispersion comprising: an anionic group-containing organic polymeric compound; an organic pigment; an organic pigment derivative; and water, wherein the polymeric compound, the organic pigment, and the organic pigment derivative are dispersed in the water, the organic pigment and the organic pigment derivative are a diketopyrrolopyrrole-based red pigment (A) and a phthalimidoalkylatedquinacridone (B), respectively, and the phthalimidoalkylatedquinacridone (B) content is in the range of 1.6 to 3.8% relative to the total (100%) of the diketopyrrolopyrrole-based red pigment (A) and the phthalimidoalkylatedquinacridone (B) on a mass basis.