| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink composition for an oil-based ballpoint pen having good writing feeling and capable of suppressing abrasion at a ball seat, which has not been fully achieved conventionally in the ink composition for an oil-based ballpoint pen. <P>SOLUTION: The ink composition for an oil-based ballpoint pen contains at least a colorant, a solvent, and N,N-dimethylformamide in order to achieve good writing feeling and control of abrasion at a ball seat. <P>COPYRIGHT: (C)2012,JPO&INPIT |
