AQUEOUS CARBON BLACK DISPERSION, AQUEOUS INK, RECORDING METHOD USING THE SAME, RECORD AND METHOD FOR MANUFACTURING AQUEOUS CARBON BLACK DISPERSION

摘要

PROBLEM TO BE SOLVED: To provide a high content aqueous carbon black dispersion which is suitably applied to a high concentration aqueous ink for meeting quality improvement and its manufacturing method, further an aqueous ink prepared by using the dispersion, a recording method performed by using the ink, and a record.;SOLUTION: The aqueous carbon black dispersion comprises at least (A) 12-30 wt.% carbon black dispersed by a water-soluble resin and (B) a nonionic surface active agent having an HLB value of 7-18 and an acetylene skeleton and has a surface tension at 25°C of 30-55 mN/m. The aqueous ink is prepared by using the dispersion, and the compounding amount of the carbon black is 4-12 wt.% based on the total ink amount.;COPYRIGHT: (C)2005,JPO&NCIPI