| abstract |
In order to provide an azo pigment which has very good color reproducibility, dispersibility, and pigment dispersion stability, and which has excellent hue and tinting strength, this pigment dispersion contains an azo pigment or a tautomer thereof represented by formula (1), said azo pigment or tautomer thereof having distinct X-ray diffraction peaks at Bragg angles (2θ ± 0.2°) of 4.8°, 7.2° and 9.7° in CuKα characteristic X-ray diffraction. |