abstract |
PROBLEM TO BE SOLVED: To provide a heat-sensitive paint which can be developed by a laser and has a high developing speed. SOLUTION: In order to solve the above-mentioned problems, a heat-sensitive paint according to the present invention comprises a leuco dye, a developer and a decoloring agent, comprises amorphous first particles, and has a glass transition point of the first particles or less. When heated at a heating rate of 30 ° C./min from the above temperature to the melting point, the color develops at a temperature equal to or higher than the glass transition point of the first particles and lower than the melting point, and the color is erased at the melting point. [Selection diagram] FIG. |