| 摘要 |
PROBLEM TO BE SOLVED: To improve storing properties to plasticizer and light fastness of recorded image by incorporating 3-diethylamino-7(m-trifluoromethyl) anilinofluorane and 4,4'-cyclohexylidene diphenol in a recording layer contg. a leuco dye and a coloring agent. SOLUTION: A heat-sensitive recording body is constituted by providing successively a recording layer contg. a leuco dye and a coloring agent and if necessary, a protective layer on a substrate. In this case, 3-diethylamino-7-(m- trifluoromethyl)anilinofluorane as a leoco dye and 4,4'-cyclohexylidene diphenol as a coloring agent are incorporated in the recording layer. By using the leuco dye and the coloring agent like these in parallel, there exists extremely little color fading of the recorded image and yellowing of the ground skin part and a uniquely excellent effect to such chemicals as oils and fats and plasticizers and an excellent effect to stability of the recorded image are obtd. |
