| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a medical heat-sensitive recording material which improves both problems that whiteness degree and record concentration are low, resulting in coloring color tone being black of red series or black coloring of green series, and that discoloration and fading of a picture due to light are large, and which has record concentration and coloring color tone comparable as that of a silver salt type photographic paper, and is excellent in light stability. <P>SOLUTION: The heat-sensitive recording material, provided with a heat-sensitive recording layer including a leuco dye and a developer on a support, includes: at least 3-(N-ethyl-p-toluidino)-6-methyl-7-anilinofluoran as a black coloring leuco dye, in the heat-sensitive recording layer; and at least one each of red coloring leuco dye and blue coloring leuco dye having a melting point lower than that of the 3-(N-ethyl-p-toluidino)-6-methyl-7-anilinofluoran, wherein sum total of the red coloring and blue coloring leuco dyes is 3-15 mass% in all leuco dyes. <P>COPYRIGHT: (C)2010,JPO&INPIT |
