| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermochromic writing utensil wherein an annular friction body can be easily attached on an exterior of the writing utensil storing a thermochromic ink in a state that an upper outer edge can be certainly brought into contact with a handwriting, and which has high decorativeness while having a high friction heat generation efficiency during friction. <P>SOLUTION: In the thermochromic writing utensil 1 storing an ink of which the color can be extinguished or changed by heating, and includes a friction body 5, with which a handwriting with the ink is rubbed, in a cap 3 or a shaft tube 21, the friction body 5 is an annular body having a hole part 51, and is attached on a cap body 4 or the shaft tube 21 by inserting a locking member 6 into the hole part 51 in a state that the upper outer edge 53 of the friction body 5 can be brought into contact with the handwriting. <P>COPYRIGHT: (C)2012,JPO&INPIT |
