| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aqueous ballpoint pen refill which maintains eraser erasability while preventing defective handwriting due to ink clogging from occurring and ensuring that a stroke distance is sufficiently long. <P>SOLUTION: This aqueous ballpoint pen refill is equipped with 5 to 30 wt.% of a nonthermoplastic colored resin particle with an average particle size of 2 to 20μm to the total amount of an ink composition, ink (6) containing at least a non-colored particle with a glass transition point of lower than 0°C, an ink storage tube (5) for storing the ink (6) and a tip (1) fixed on one side of the ink storage tube (5). In this refill, a ball (12) of the tip (1) is movable back and forth within the range of 6 to 14% of the diameter of the ball (12) in a ball housing (13) and retained rotatably. <P>COPYRIGHT: (C)2004,JPO |
