HEAT-SENSITIVE RECORDING BODY

PROBLEM TO BE SOLVED: To provide a heat-sensitive recording body of superior transparency and preservation stability of an recording image by forming a heat-sensitive recording layer of films composed of a coloration agent and a basic dye by the deposition process and constituting the layer formed of at least three films composed respectively of a coloration agent, a dye and a coloration agent, or of a dye, a coloration agent and a dye as main components. SOLUTION: In a heat-sensitive recording body utilizing the coloring reaction of a colorless or light color basic dye with a coloration agent and provided with a heat-sensitive recording layer and a protective layer formed successively on a substrate, the heat-sensitive layer is formed of films composed of the coloration agent and the basic dye by the deposition process. The films of the layer are formed of at least three films composed respectively of a coloration agent, a dye and a coloration agent, or of a dye, a coloration agent and a dye as main components. As the coloration agent, preferably a compound containing arylsulfonylaminocarbonylamino represented by a formula is used. In the formula, R1 represents a non-substituent aromatic group or an aromatic group substituted by at least one member selected out of lower alkyl and the like.