| abstract |
(57) [Summary] (Correction) [Purpose] To provide a thermosensitive recording sheet having high sensitivity and high image stability. [Structure] A heat-sensitive recording sheet provided with a color-forming layer containing an organic developer of the general formula (I) or (II) and a basic colorless dye of the formula (III). (In the formula, A is hydrogen, a C 1 -C 4 alkyl group, C 1 -C 4 alkoxy group, hydroxy group, a nitro group. In the formula, R 1 , R 2 , and R 3 are hydrogen atoms, C 1 to C. 4 alkyl group, C 1 -C 4 alkoxy group, hydroxy group, and nitro group. R 1 and R 2 may combine with each other to form an aromatic ring. Y is a sulfur atom or an oxygen atom. ) |