| 摘要 |
An inkjet pigment ink containing a pigment, a water-soluble solvent, water, and a copolymer. The copolymer is obtained by copolymerization of: aromatic acrylate (monomer A); (meth)acrylate added with ethylene oxide having a polymerization degree of 5 or more (monomer B); and acrylic acid (monomer C).
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