| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a writing utensil which has a sufficient attractive force to a surface to be attracted, has no concern for falling-off of the writing utensil by impact or vibration or for descending of the tail end part, even in case the attractive surface is smeared. <P>SOLUTION: This writing utensil is equipped with a freely detachable cap 2 on the pen point side of a writing utensil body 6 and has a flat plate-like magnet 4 fitted to the outer surface of the cap 2. When the area of the attractive surface of the magnet 4 is given as A (square centimeter), the magnetic flux of the attractive surface of the magnet 4 is given as B (millitesla) and the weight of the entire writing utensil 1 is given as C (gram), the relationship of A×B/C>20 is satisfied. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
