| abstract |
The present invention provides a pigment dispersion that is suitable for inkjet use, and can be used for recording inks to obtain a high image density even when recorded on plain paper and has excellent storage stability. SOLUTION: Water and a pigment are contained, and the pigment contains ozone-oxidized carbon black oxidized by ozone, and the volatile content of the ozone-oxidized carbon black is 10% by mass to 20% by mass. There, and BET specific surface area of 90m 2 / g~150m 2 / g, content of 17.0 wt% of said pigment and electricity when the pH was adjusted to 6-8 with an alkali metal hydroxide It is a pigment dispersion having a conductivity of 0.6 mS / cm to 1.5 mS / cm. [Selection] Figure 3 |