Patent ID: 8541339

Claim:
A reversible thermosensitive recording medium comprising: a reversible thermosensitive recording layer; a first sheet-shaped base; a second sheet-shaped base; a first resin layer; a second resin layer; and an electronic information recording module containing a module substrate and an electronic information recording element and an antenna circuit which are disposed on the module substrate; wherein the reversible thermosensitive recording layer is provided adjacent to the first sheet-shaped base; wherein the first sheet-shaped base or the second sheet-shaped base has a concave portion in which the electronic information recording element is disposed in a depth direction of the first sheet-shaped base or the second sheet-shaped base, wherein the electronic information recording module is provided between the first sheet-shaped base and the second sheet-shaped base, where the first resin layer is provided between the electronic information recording module and the sheet-shaped base having the concave portion and the second resin layer is provided between the electronic information recording module and the sheet-shaped base having no concave portion, and wherein an inner side surface of the concave portion is a tapered surface where the maximum opening diameter of the concave portion decreases from an opening edge of the concave portion towards a bottom surface of the concave portion.