| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball-point pen tip capable of preventing sufficiently blurring from being generated, even when adopting ink capable of securing a supply amount to a pen point by shearing due to a writing ball, and capable of obtaining smooth and nice writing feeling, a ball-point pen refill, a ball-point pen, and a method of manufacturing the ball-point pen tip. <P>SOLUTION: A triangle-pyramid-like recess 42 is provided to be recessed gradually toward an ink introduction hole 36, in a bottom part of a ball house 31, and a valley part 44 formed in the recess 42 is used as an ink reservoir and an ink flow channel. The valley part 44 can increase an ink reserving amount and an ink supply amount, because a length, a width and a depth are secured sufficiently, the supply of the ink to the pen point is prevented from being interrupted, and the blurring is prevented sufficiently from being generated, even when adopting the ink supplied to the pen point mainly by the shearing due to the writing ball 2A, and friction is reduced therein between the writing ball and a reception seat face. <P>COPYRIGHT: (C)2010,JPO&INPIT |
