| 摘要 |
PURPOSE: An inkjet-printer ink composition containing tannin extracted from persimmon which can substitute most of imported conventional tannin, thereby being able to reduce the production cost and secure a stable supply source domestically is provided. CONSTITUTION: The inkjet-printer ink composition containing various components containing deionized water, organic solvent which is soluble in water or miscible with water, coloring agent, tannin, and the like, comprises tannin component extracted from persimmon by means of a solvent extraction method. Specifically, the tannin component extracted from persimmon is gallic acid, ellagic acid, and catechin. |
