Thermosensitive recording medium

A thermosensitive recording medium comprising a support, and a thermosensitive color-developing layer formed on said support and containing a leuco dye having a melting point of at least 200.degree. C. a color developer having a melting point of at least 180.degree. C., and an image stabilizing agent having a melting point of at least 200.degree. C.;

• wherein said image stabilizing agent is an organic compound selected from the group consisting of bis(3,5-dibromo-4-hydroxyphenyl)sulfone, bis(4-hydroxyphenyl)sulfone, dodecanedio-bis{(2-hydroxybenzoyl)hydrazide}, sodium salt of di(2,4,6-tri-t-butylphenyl)hydrogenphosphate, 3-(2-hydroxybenzoylamino)-1-H-1,2,4-triazine, 1,3,5-tris (4-hydroxy-3,5-di-t-butylbenzyl)isocyanuric acid and 1,1-bis (2-methyl-4-hydroxy-5-t-butylphenyl)butanebis(3,5-dibromo-4-hydroxyphenyl) sulfone.