| 摘要 |
PURPOSE:To obtain a thermal recording material having excellent preservability before thermal recording, high in developed color density upon recording and capable of being photo-fixed after recording, by using a specified compound as a diazo compound, in a diazo thermal recording material. CONSTITUTION:A diazo compound of the general formula ArN2<+>X<->, wherein Ar is a subst. or unsubst. aromatic parts, X<-> is an acid anion containing a perfluoroalkly group or a perfluoroalkenyl group, e.g., a compound of formula I or II, a coupling agent such as 2-hydroxy-3-naphthoic acid anilide and a basic substance such as triphenylguanidine are separately pulverized and dispersed in appropriate binder, the resultant dispersions are mixed with each other, appropriate additives are added to the resultant mixture, and the mixture thus obtained in applied to a base to provide a recording layer. In formulation, 0.1-10pts.wt. of the coupling agent and 0.1-20pts.wt. of the basic substance are used per 1pt.wt. of the diazo compound. |
