Abstract: A thermosensitive recording material is disclosed, which comprises a support, and a thermosensitive recording layer formed on one side of the support, the thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a color upon application of heat thereto, and (ii) a colored layer comprising a colored fluorescent dye composition.

Abstract: A thermosensitive recording material comprising (a) a support material, (b) an undercoat layer formed thereon, comprising a polyvinyl alcohol having a saponification ratio ranging from 80 mole % to 95 mole %, which serves as water-soluble binder agent, a first water-resisting-property-improvement agent and a first organic filler, (c) a thermosensitive coloring layer formed on the undercoat layer, comprising a leuco dye, a color developer capable of inducing color formation in the leuco dye upon application of heat thereto and the same polyvinyl alcohol as first mentioned and (d) an overcoating layer formed on the thermosensitive coloring layer, comprising the same polyvinyl alcohol as first mentioned, a second water-resisting-property-improvement agent and a second organic filler.

Abstract: A thermosensitive recording adhesive sheet capable of forming colored images thereon upon application of heat, comprising (a) a support material with print patterns on the front side or back side thereof, (b) a thermosensitive coloring layer formed on the support material, (c) an adhesive layer formed on the back side of the support material, opposite to the thermosensitive coloring layer, and (d) a disposable backing sheet which is attached to the adhesive layer and can be peeled off the adhesive layer when the thermosensitive recording adhesive label is used. When necessary, (e) a protective layer for protecting the thermosensitive coloring layer and for improving the thermal head matching properties of the thermosensitive coloring layer can be formed on the thermosensitive coloring layer.

Abstract: A thermosensitive recording material is disclosed suitable for use in thermosensitive-recording-type tickets, including magnetic tickets, and thermosensitive-recording-type labels, comprising a support material; a thermosensitive coloring layer formed on the front side of the support material, which thermosensitive coloring layer comprises a leuco dye and an acidic material capable of coloring the leuco dye when heat is applied thereto; and a protective layer formed on the thermosensitive coloring layer, which protective layer comprises a polyvinyl alcohol with a saponification ratio ranging from 70% to 85% and is capable of preventing intrusion of materials which may discolor the thermosensitive coloring layer.

Abstract: A thermosensitive recording material is disclosed suitable for use in thermosensitive-recording-type tickets, including magnetic tickets, and thermosensitive-recording-type labels, comprising a support material; a thermosensitive coloring layer formed on the front side of the support material, which thermosensitive coloring layer comprises a leuco dye and an acidic material capable of coloring the leuco dye when heat is applied thereto; and a protective layer formed on the thermosensitive coloring layer, which protective layer comprises a polyvinyl alcohol with a saponification ratio ranging from 70% to 85% and is capable of preventing intrusion of materials which may discolor the thermosensitive coloring layer.

Abstract: A thermosensitive-recording-type label sheet comprising a support material; a thermosensitive coloring layer formed on the front side of the support material, the thermosensitive coloring layer comprising a leuco dye and an acidic material capable of coloring the leuco dye when heat is applied thereto; and a barrier layer formed on the back side of said support material, opposite to the thermosensitive coloring layer, the barrier layer comprising a water-soluble polymeric material and a water-repellent wax or wax-like material and capable of preventing intrusion into the thermosensitive coloring layer of materials which may discolor the thermosensitive coloring layer; and an adhesive layer formed on said barrier layer. In this label sheet, the wax or wax-like material contained in the barrier layer plays an important role of protecting the thermosensitive coloring layer during the production of the label sheet as well as while in use.

Abstract: A releasable heat-sensitive recording paper is disclosed wherein a heat-sensitive color forming layer and a protective layer are laminated in succession on the surface of a substrate, said color forming layer consisting essentially of a leuco dye and an acidic substance, said protective layer consisting essentially of a water soluble resin, and further a required pattern is printed on this protective layer with an ultraviolet setting type printing ink, while a pressure-sensitive adhesive layer is formed on the back of the substrate and the thus formed layer is covered with a releasable paper.