| 摘要 |
PROBLEM TO BE SOLVED: To obtain recorded information as a colored image only when irradiation of light is performed by a method wherein at least one kind of compounds having a carbonyl thiourea radical is contained. SOLUTION: For this recording material, using a coloring dye, at least one kind of compounds having a carbonyl thiourea radical which is represented by the formula is contained. Also, for the recording material containing a coloring dye and at least one kind of compounds having a carbonyl thiourea radical, which is represented by the formula, a coloring is performed by heating or pressurization, and irradiation of light. That is, the compound having a carbonyl thiourea radical, which is represented by the formula, does not make the dye color by simply coming into contact with the coloring dye, and has a function wherein the dye is colored only when light is cast after coming into contact with the coloring dye. |
