| 摘要 |
<p>PURPOSE:To obtain the title ink improved in long-term dispersion stability by dispersing a specified coloring agent and a surface-treated titanium oxide in a vehicle containing an organic solvent and a soluble resin. CONSTITUTION:Titanium oxide is treated with a surface treating agent selected from among a titanate coupling agent, a silane compound, a metal soap, and a soluble resin to give a surface-treated titanium oxide (A). Separately, an organic solvent in an amount of 40-80wt.% based on an ink to be obtained is mixed with a soluble resin in an amount of 0.5-20wt.% based on the ink, and if necessary, a release agent, etc., to give a vehicle (B). 10-35wt.% coloring agent comprising a solid solution of a dye and/or a pigment having no daylight fluorescence and a triazine condensation resin and 1-30wt.% component A are dispersed in component B.</p> |
