| abstract |
PROBLEM TO BE SOLVED: To provide high storage stability, ejection stability, high density of plain paper / recycled paper, etc. with less bleeding, shading unevenness and back-through, and glossy media without bleeding / shading unevenness. An excellent aqueous ink composition suitable as an ink for inkjet recording is desired. SOLUTION: A water-based ink composition comprising at least a coloring component, a humectant, a nonionic surfactant having an HLB value of 8 or less, water, and an amphoteric surfactant, wherein the coloring component contains a coloring agent. A dispersion which can be dispersed in water by being included in a dispersion polymer, and the dispersion polymer is composed of a hydrophobic part and a hydrophilic part, and at least a part of the hydrophilic part is a part of the hydrophobic part. A neutralizing group obtained by neutralizing a neutralizing group, wherein the abundance of the neutralizing group is within a range of 20% or more and less than 60% in molar ratio to the sum of the unneutralized group and the neutralized group. A water-based ink composition comprising a certain thing. [Selection figure] None |