| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the manufacturing method for a heat sensitive recording material capable of manufacturing the heat sensitive recording material, with which a clearer and beautiful red image with a high image visibility is obtained and which is excellent in various performances as heat sensitive recording material. <P>SOLUTION: In the manufacturing method for the heat sensitive recording material having a heat sensitive recording layer including an electron donative colorless dye and an electron acceptive compound developing color through its reaction with the electron donative colorless dye on a support, as the electron acceptive compound, at least one kind among compounds represented with structural formulae (1) to (3) is employed and, as the electron donative colorless dye, two or more kinds, which are selected from the group comprising of 3- diethylamino-7,8-benzofluorane, 3-diethylamino-6,8-dimethylfluorane, 3,3-bis(1-n- butyl-2-methylindole-3-yl)phthalide or the like and, after being independently dispersed, mixed together for employing the heat sensitive recording material. <P>COPYRIGHT: (C)2003,JPO |
