Thermal recording materials

摘要

Disclosed are a thermal recording material having a thermal recording layer containing an electron-donating dye precursor and an electron-accepting compound, wherein the thermal recording layer comprises an electron-accepting compound of the general formula (I), (each of R¹ and R² is a hydrogen atom or an alkyl group), and a specific aromatic phosphorus compound, and a thermal recording material wherein said thermal recording layer comprises the electron-accepting compound of the above general formula (I) and an undercoat layer formed on a substrate comprises an organic pigment having a specific morphological structure. The former thermal recording material is excellent particularly in thermal response as well as heat resistance and light resistance of a ground and images in storage, and the latter thermal recording material is excellent particularly in whiteness.