| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fluorescent ink composition capable of forming an image of high fluorescence emission intensity and imparting high fluorescent dye concentration to the surface when printing a surface of a water-absorbing material such as paper and cloth, by mixing a fluorescent dye, water as a solvent and a specific fine solid particles. SOLUTION: This ink composition consists of (A) a fluorescent dye, (B) water as a solvent and (C) fine transparent solid particles [the materials for example a water dispersible nylon resin obtained by grafting (meth)acrylic acid or N-methylolacrylamide onto N-methoxymethylated nylon or a water dispersible product of egg albumin and chitosan] and preferably containing 0.001-10wt.% of A, more than 50% of B and 2-45% of C. |
