HEAT-SENSITIVE RECORDING BODY

PROBLEM TO BE SOLVED: To provide a heat-sensitive recording body of superior transparency preventing the sticking to a heating head by forming a heat-sensitive recording layer by at least one film of a coloration agent and a basic dye based on the deposition process and containing low-molecular-weight polyolefin of specified amount having the specified average grain diameter in a protective layer. SOLUTION: In a heat-sensitive recording body utilizing the coloring reaction of a colorless or light-color basic dye with a coloration agent and having a heat-sensitive recording layer and a protective layer formed successively on a transparent substrate, the heat-sensitive recording layer is formed by at least one film respectively of the coloration agent and the basic dye based on the deposition process. Low-molecular-weight polyolefin having the average grain diameters of 0.1-3μm of 1-15wt.% to the total solid amount of the protective layer is contained in the protective layer. The vacuum deposition process by resistance heating is preferably used as the above-referred deposition process, and in the deposition process, the basic dye to be deposited is introduced into a boat or the like and deposited by heating under the high vacuum degree condition, which is higher than the vacuum degree of 1×10 Torr, as a preferable procedure.