| 摘要 |
<p>PURPOSE:To obtain a highly safe erasable ink for a writing utensil. CONSTITUTION:The title ink comprises a pressure-sensitive color or a heat- sensitive color, an oil well compatible with the constituent lower alcohol and capable of dissolving the color, an organic developer which reacts with the color to develop it, an alkali metal salt or an alkaline earth metal salt which stabilizes the developed color and the above lower alcohol as a solvent. The developed pressure-sensitive color or heat-sensitive color stably exists in the lower alcohol solvent.</p> |
