| 摘要 |
SOLUTION: An ink composition comprising (A) a nonionic surfactant having an HLB of 0 or more and less than 4 and (B) a nonionic surfactant having an HLB of 4 or more and 18 or less, where any one of the (A) and (B) components contains a surfactant which is a silicone-based nonionic surfactant, water, a water-soluble organic solvent, and a colorant, a content of the (A) component is 0.01 to 5 mass%, and a content of the (B) component is 0.01 to 5 mass%.EFFECT: The ink composition of the present invention is practically very advantageous as an inkjet ink of a water/water-soluble organic solvent mixed system, because it shows no color bleeding because it has excellent wettability and permeability, is excellent also in color development and image uniformity, and can correspond to high-speed printing and high-speed coating. Especially, the ink composition, when printed on paper such as coat paper having relatively poor absorbency, shows no bleeding, shows high print density and color density of printed image, and exhibits extremely good printing performance.SELECTED DRAWING: None |
