| abstract |
PROBLEM TO BE SOLVED: To secure long-term storage stability of an ink composition for inkjet and water resistance of a printed matter printed on arbitrary paper using the same, thereby preventing bleeding. SOLUTION: At least an alkali-soluble coloring agent, It includes a water-soluble cation resin containing a repeating unit represented by the following general formula (I), a water-soluble organic solvent having a lower vapor pressure than water, and water. Embedded image (Wherein, R1 and R2 are the same or different and are a hydrogen atom or an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, and X is an inorganic anion or an organic anion) |