| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water-base pigment ink which can give pastel-toned writing having high hiding power, is reduced in long-term color separation and forms no hard cake. SOLUTION: This ink essentially consists of 3-40 wt.%, based on the total ink weight, titanium oxide, 1-40 wt.% colored resin particles, 0.5-20 wt.% aluminosilicate, 1-20 wt.% water-soluble resin, 0.1-1 wt.% water-soluble inorganic salt, 0.01-1 wt.% surfactant and water.</p> |
