Thermosensitive recording material

A thermosensitive recording material comprising:

• a sheet substrate;
• and
• a thermosensitive image-forming layer formed on a surface of the sheet substrate and comprising a substantially colorless dye precursor, a color developing agent reactive with the dye precursor upon heating to thereby develop a color, a colored image-stabilizing agent comprising at least one member selected from the group consisting of aromatic aziridinyl compounds having at least one aziridinyl group, and aromatic epoxy compounds having at least one epoxy group, and a binder,
• said thermosensitive colored image-forming layer further containing an additional colored image-stabilizing agent comprising a member selected from the group consisting of (1) amino compounds having at least one member selected from the group consisting of primary and secondary amine groups, (2) mixtures of at least two of the amino compounds, (3) carboxylic compounds having at least one member selected from the group consisting of a carboxyl group and a group of the formula --CO--O--CO--, and (4) mixtures of at least two of the carboxyl compounds, the amino compounds being selected from the group consisting of the compounds of the formulae:
• ##STR11## and the carboxylic compounds being selected from the group consisting of the compounds of the formulae:
• ##STR12##