| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball point pen refill group arranged in shaft tubes of the same kind, accommodating a plurality of black inks for a ball point pen. <P>SOLUTION: The ball point pen refill is constituted by loading a ball point pen tip holding rotatably a ball directly of through a tip holder to the front end portion or an ink storing tube. In the ball point pen group having the same constituting components and arranged in the shaft tubes of the same kind, the black color inks for the ball point pens are stored in the respective ink storing tubes of the ball point pen refill group and the respective black inks for the ball point pens have color difference. <P>COPYRIGHT: (C)2010,JPO&INPIT |
