| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink composition for a ballpoint pen, which highly strikes a balance between a direct flow-preventing function and a temporal stability without degrading writing performance. <P>SOLUTION: This ink composition for a ballpoint pen contains at least a crystalline cellulose and resin particles. It is preferable that: the mass ratio of the resin particles to the crystalline cellulose is 1 to 6; and the average particle diameter of each of the resin particles is 0.3 to 1.0 μm. <P>COPYRIGHT: (C)2013,JPO&INPIT |
