HEAT-SENSITIVE RECORDING SHEET

摘要

A heat-sensitive recording sheet has on a support a color-developing layer which comprises a colorless or pale colored basic chromogenic dye and an organic color- developing agent, wherein the organic color-developing agent comprises both 4-hydroxy-4'-n-propoxydiphenylsulfone and a particular phenolic substance. The sheet of this invention provides excellent writing quality and superior thermal responsibility.