| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink composition for inkjet recording with excellent storage stability, an ink pack filled with the ink composition, and an inkjet recording method using the ink composition. <P>SOLUTION: The ink composition for inkjet recording includes a pigment, a pigment dispersant, a polymerizable compound and an ammonium phthalocyanine sulfonate. As the pigment, carbon black is included. As the pigment dispersant, a basic polymeric dispersant is included. As the polymerizable compound, N-vinyl caprolactam is included at 15 wt.% or more of the entire ink composition. The composition satisfies either requirement (i) or (ii): (i) The pH of the carbon black is ≥2.0 and ≤3.5, and the amine value of the basic polymeric dispersant is 25 mgKOH/g or more and less than 40 mgKOH/g; and (ii) the pH of the carbon black is ≥2.0 and ≤7.0, and the amine value of the basic polymeric dispersant is ≥40 mgKOH/g and ≤50 mgKOH/g. <P>COPYRIGHT: (C)2013,JPO&INPIT |
