Patent ID: 6956010

Claim:
A rewritable thermal label of a non-contact type, for attachment to an adherend, which allows recording and erasure of information repeatedly in accordance with a non-contact method, said label comprising: (a) an anchor coat layer comprising a crosslinked resin having a degree of crosslinking expressed as a gel function of 30% or more, said resin being selected from the group consisting of an acrylic resin, a polyester resin, a polyurethane resin and an ethylene-vinyl acetate copolymer which is crosslinked; (b) a heat-sensitive color development layer comprising a dye precursor and a reversible color developing agent; and (c) a light absorption and photo-thermal conversion layer comprising (i) at least one light absorbing agent selected from the group consisting of a cyanine-based coloring matter, a phthalocyanine-based coloring matter, an anthraquinone-based coloring matter, an azulene-based coloring matter, a squalylium-based coloring matter, a metal complex-based coloring matter, a triphenylmethane-based coloring matter and an indolenin-based coloring matter, and (ii) a binder curable with an ionizing radiation selected from the group consisting of ultraviolet light and an electron beam, said layer (c) being cured by said radiation; said layers (a), (b) and (c) being laminated on a first face of a substrate successively, said layer (a) being placed next to the substrate, and said layer (c) being an outermost layer; and (d) an adhesive layer placed on a second face of the substrate.