| 摘要 |
PURPOSE:To obtain a diazo fixation type heat-sensitive recording body which is highly sensitive and excellent in preservation and, in addition, with improved textile coloring by concurrently adding thiourea and metallic salt of acid to a diazo fixation type heat-sensitive recording body. CONSTITUTION:A diazonium salt, an acid which is precoupling inhibitor of coupling compounds and a photosensitive, heat-sensitive layer of which fine particle dispersed body of hydrophobic, organic, basic compound that indicates basic atmosphere when heated and fused constitutes the main compound as a developer are provided on a substrate, and into the above photosensitive, heat-sensitive, layer of diazo fixation type heat-sensitive type body thiourea is added for prevention of texture coloring. And concurrently with the addition of the thiourea, metallic salts of inorganic or organic acids that have dissociation constants that are either equal to or larger than those of acids as precoupling inhibitors are used. Thus, texture coloring after fixation may be improved without a decrease in preservation characteristics. |
