| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermochromism writing utensil capable of obtaining a plurality of kinds of handwriting of a thermochromism ink by using a single writing utensil. <P>SOLUTION: The thermochromism writing utensil is composed of a first writing tool 2, a second writing tool 3 and a cap 5. The first writing tool 2 has a first nib 21 at the front end, with a first thermochromism ink 22 stored inside. The second writing tool 3 has a second nib 31 at the front end, with a second thermochromism ink 32 stored inside. The cap 5 is mounted on the first nib 21 side of the first writing tool 2. In the rear part of the first writing tool 2, there is provided a cap part 23 which is mountable on the second nib 31 side of the second writing tool 3. A friction part 51 is installed at the apex of the cap 5. The handwriting by the first thermochromism ink 22 and the handwriting by the second thermochromism ink 32 are each rubbed with the friction part 51 and, with a frictional heat caused thereby, each handwriting can be thermally changed in color. <P>COPYRIGHT: (C)2009,JPO&INPIT |
