| 摘要 |
PROBLEM TO BE SOLVED: To provide an aqueous dispersion-type ink which has low environmental loads, and also has excellent water resistance, excellent print quality, and excellent long-term stability.SOLUTION: An aqueous dispersion-type ink comprises polyvinyl acetal particles, a color material, and an aqueous dispersion medium. The polyvinyl acetal particles have ionic functional groups, and are dispersed in the aqueous dispersion medium. |
