| 摘要 |
<p>A pigment composition for liquid toner which is prepared by dissolving/dispersing carbon black and a resin in a nonaqueous solvent. One of (1) carbon black containing not more than 10 ppm of grit and not more than 0.1 wt.% of ash, (2) carbon black in which the quotient of the division of the total quantity of oxygen determined on the basis of a 1500° volatile component by the specific surface area is 0.20-0.40 mg/m2, and (3) carbon black in which the content of polycyclic aromatic hydrocarbons in a liquid extracted by using monochlorobenzene is not more than 30 ppm, is used as the carbon black. The pigment composition is manufactured by kneading a pigment and a resin, freeze-pulverizing the resultant product, and then dissolving/dispersing the powder in a nonaqueous solvent. Thus a pigment composition for liquid toner enabling excellent image characteristics, especially, image characterisitics with a sufficiently high printing density, and a pigment composition for liquid toner exerting little influence upon a living body even if it is inhaled and having excellent image characteristics are provided.</p> |
