| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink composition for an oily ball point pen good in writing feeling and capable of suppressing wearing of a ball seat in the ink composition for the oily ball point pen. SOLUTION: The ink composition for the oily ball point pen includes at least a coloring agent, an organic solvent and a salt-formation object of an anionic surfactant and/or a cationic surfactant having an aromatic ring. COPYRIGHT: (C)2011,JPO&INPIT |
