| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball for a ball-point pen, which stabilizes the quantity of ink ejected in writing, and which avoids sinking. <P>SOLUTION: Characteristically, silica or boron nitride, which is composed of a particulate with a particle diameter of 2-6 μm, is bonded and fixedly attached on the surface of the mechanically polished ball for the ball-point pen in a uniformly dispersed state. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
