| 摘要 |
PURPOSE:To obtain a heat-sensitive recording material which has especially excellent heat-sensitivity, chemical resistance and shelf stability life of printed images by having an electron donor dye precursor contain together at least one kind of plural numbers of electron acceptor compounds that are respectively indicated by a specific general formula. CONSTITUTION:An electron donor dye precursor and an electron acceptor compound are used for a heat-sensitive recording material. In this case, the heat- sensitive recording material contains at least one kind of the electron acceptor compounds that are respectively expressed by respective formulas I and II. In the formulas stated herewith, X1, X2, and X3 denote respectively hydrogen atom, alkyl group, aralkyl group, alkoxy group, aryl group or amino group, and M denotes hydrogen atom or a bivalent metal. R denotes alkyl group, aryl group, alkokxy group or aryloxy group. Thus, the heat-sensitivity, chemical resistance and shelf stability life of printed images of the heat-sensitive recording material are specifically improved. |
