abstract |
Provided are a pigment dispersion and a dispersion method of a yellow azo pigment having a suitable printing density and gloss when an ink for inkjet recording is used. A azo pigment of formula (1) or an azo pigment of formula (2) having a characteristic X-ray diffraction peak at a specific position in CuKα characteristic X-ray diffraction, containing a dispersant and water. Water-based pigment dispersion. [Selection figure] None |