| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an aqueous ink which shows an excellent water resistance, light resistance, clarity, shelf stability and OA performance and allows no drying of pen points. SOLUTION: The aqueous ink contains a resin particle which is dyed with a dye and comprises a copolymer containing a cyano group-containing vinyl monomer (A) and either or both of a vinyl monomer (B) of formula (I) and a vinyl monomer (C) of formula (II) wherein R is a hydrogen atom or a methyl group; Y is -CH2 or -CH2-CH(CH2X)-, wherein X is a halogen atom; and n is an integer of 1-5 as structural monomers.</p> |
