Patent ID: 7094732

Claim:
A laminate construction, able to provide a non-reversible image in gray scale, imaged by means of applying concentrations of heat to said laminate construction, where said laminate construction comprises the following sequence of layers: a) a first non-cavitated thermoplastic film layer, having a first and a second surface wherein the thermoplastic film is selected from the group consisting of polyester, polyethylene, polypropylene, polycarbonate, and/or other known polvolefins and combinations thereof; b) an active direct thermal layer, having a first and a second surface, overlying said first surface of the thermoplastic film, said active direct thermal layer having a non-reversible color developing mechanism reactive to transmissions of heat through either the first or second surface of the active direct thermal layer for forming images within the active direct thermal layer; c) a radiation-curable topcoat applied to said first surface of the active direct thermal layer; d) an acrylic adhesive layer having a first and a second surface, wherein the first surface of the adhesive is applied to the second surface of the first non-cavitated thermoplastic film layer; e) a second non-cavitated thermoplastic film layer having a first and a second surface and is applied to the second surface of said acrylic adhesive layer; f) a direct thermal topcoat applied to the first surface of the active direct thermal layer of the laminate; g) a color print/sensor mark, having a first and second surface, applied to the second surface of the second thermoplastic film layer; h) an additional acrylic adhesive layer, having a first and second surface, applied to the second surface of the colorprint/sensor mark; and i) a translucent polyolefin layer applied to the second surface of the second adhesive layer.