| 摘要 |
PURPOSE: An ink composition is provided to maintain the dissolved oxygen concentration within ink, to prevent foam or gas when the ink is placed in a high temperature environment, and to ensure excellent ink mobility and stable discharge performance. CONSTITUTION: An ink composition includes a coloring agent, a solvent, a surfactant and an oxygen absorbent. The oxygen absorbent comprises a heterocyclic compound with an N-substituted amino group and a hydrocylamine compound. The heterocyclic compound with an N-substituted amino group is at least one selected from the group consisting of N-aminomorpholine, 1-amino-4-methylpiperazine, N-aminohexamethyleneimine, 1-aminopyrolidone and 1-aminopiperidine.
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