| 摘要 |
PROBLEM TO BE SOLVED: To provide such an ink composition for use in a rollerball pen as the ink composition for use in the rollerball pen has the excellent feel of writing and suppresses the abrasion on a ball seat, and to provide a refill for use in the rollerball pen using it. SOLUTION: The ink composition contains at least water, a coloring agent, a shear-thinning agent, a surfactant and a solid lubricant, and is characterized in that the solid lubricant is a fluorine-based resin which comprises a structure having unbranched -CF<SB>2</SB>- groups. COPYRIGHT: (C)2010,JPO&INPIT |
