| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermally-discoloring writing implement capable of facilitating the storage of a plurality of writing implements, and capable of thermally easily discoloring a holograph of thermally-discoloring ink at a reduced load. <P>SOLUTION: A first writing body 2A has a pen tip 3A at one end, and stores the first thermally-discoloring ink inside. A second writing body 3B has a pen tip 3B at one end, and stores the second thermally-discoloring ink inside. A cap 4 has a first insertion attaching hole 4A capable of insertion-attaching the pen tip 3A side of the first writing body 2A, and a second insertion attaching hole 4B capable of insertion-attaching the pen tip 3B side of the second writing body 2B. The first insertion attaching hole 4A and the second insertion attaching hole 4B are formed in parallel with each other and opened along the same directions. A friction part 5 is formed on the outer face of the cap 4. The holograph caused by the first thermally-discoloring ink and the holograph caused by the second thermally-discoloring ink are rubbed by the friction part 5, and the respective holographs are thermally discolored by friction heat generated therein. <P>COPYRIGHT: (C)2009,JPO&INPIT |
