| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction tool 1 that can thermally change colors only at an area which needs to be erased even though the area on a paper handwritten with thermochromic ink is wide or narrow, and causes a friction body 2 to prevent friction parts 2a, 2b from being soiled.SOLUTION: In a friction tool 1, a friction body 2 is formed so that the cross section is substantially oval, and the front and rear ends have friction parts 2a, 2b. A case body 3 is formed so that the cross section is substantially oval, and a window part is provided at a longer diameter side of the oval. The friction body 2 is stored in a through-hole 3c of the case body 3, and the friction body 2 exposed from the window part 3d of the case body 3 is pushed. Accordingly, the friction parts 2a, 2b are delivered from openings 3a, 3b at the front and rear sides of the case body 3. |
