| 摘要 |
PURPOSE:To obtain a thermal recording material excellent in developed color density, solvent resistance and plasticizer resistance, by containing a specific compound as a coupler. CONSTITUTION:As coupler substances, bisphenol S and bis-(3-aryl-4- hydroxyphenyl) sulfone represented by formulae (I), (II) are used and the mixing ratio of both of them is set so that the componential ratio of the latter is 10-90wt%. If necessary, a sensitiger, a filler, a lubricant or the like are contained and these components, a color forming substance and the mixture of the couplers represented by the formulae (I), (II) are separately subjected to finely pulverizing treatment in the presence of a binder and the pulverized ones are mixed to be applied to a support to form a thermal color forming layer which is, in turn, dried to obtain a thermal recording material. |
