| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermochromic writing instrument, capable of writing by thermochromic ink, capable of heat-discoloring its calligraphy by frictional heat, and capable of inputting to an electrostatic type input device.SOLUTION: In a thermochromic writing instrument 1 having a pen point 5a capable of discharging thermochromic ink in front of a barrel 2 and having a rubbing member 6 capable of heat-discoloring calligraphy by frictional heat generated in its case by rubbing the calligraphy of the thermochromic ink, a space part 6e is formed on the inside of a rubbing member 6, so that an apex part 6a of the rubbing member 6 is formed in a thin wall, and a side part 6d is also formed in a thick wall.SELECTED DRAWING: Figure 3 |
