| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermochromic stamp which can impress thermochromic ink onto a paper surface and which can thermally discolor the thermochromic ink.SOLUTION: A thermochromic stamp includes a seal face for stamping thermochromic ink, and a friction part that is made of an elastic material and that can thermally discolor a stamped image by frictional heat generated by rubbing the stamped image on a paper surface, obtained by the stamping thermochromic ink. |
