| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-aqueous pigment ink excellent in wiping durability and image density. <P>SOLUTION: The non-aqueous pigment ink composition for inkjet comprises (A) at least one kind of ionic substance selected from the group consisting of quaternary ammonium salts, quaternary phosphonium salts, combinations of fatty acids and/or alkyl phosphates with amines and synergists in 0.01-10 wt.% based on the weight of the composition, (B) an alkyl (meth)acrylate copolymer, wherein the carbon number of the alkyl group is 12-25 and urethane bond segments are 1-40 wt.% of the copolymer, in 0.1-20 wt.%, (C) a pigment in 0.1-20 wt.% and (D) an organic solvent. <P>COPYRIGHT: (C)2011,JPO&INPIT |
