| 摘要 |
<p>PURPOSE:To obtain the subject ink, comprising a fluorescent pigment, specific PVA, a specified water-soluble organic substance and water without causing discoloration and fading even in writing on heat-sensitive or pressure-sensitive paper and excellent in pen point drying resistance and dispersion stability. CONSTITUTION:The objective ink comprises (A) preferably 1-30wt.% fluorescent pigment such as an inorganic or an organic fluorescent pigment, (B) preferably 0.05-30wt.% PVA having 75-93mol% saponification degree, (C) preferably 0.5-20wt.% water-soluble organic substance having >=3 hydroxyl groups such as glycerol and (D) preferably 40-95wt.% water.</p> |
