Released heat-sensitive recording paper
AssigneeRicoh Company, Ltd.
InventorsSusumu Iwata, Keiichi Maruta, Yukihiro Yuyama
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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.
Claims10
A releasable, heat-sensitive, recording paper comprising:
- (a) a substrate;
- (b) a heat-sensitive, color-forming layer superposed on said substrate, said heat-sensitive, color-forming layer consisting essentially of a binder, a colorless or pale leuco dye and an acidic substance adapted to cause said leuco dye to undergo color formation upon heating of said recording paper;
- (c) a protective layer superposed on said heat-sensitive, color-forming layer, said protective layer consisting essentially of a water-soluble resin and having a thickness of from 0.5 to 3.0 g/m.sup.2 in terms of the quantity of the solids thereof;
- (d) a pattern of ultraviolet-setting printing ink printed on said protective layer;
- (e) a pressure-sensitive adhesive layer superposed on said substrate on the opposite side thereof from said heat-sensitive, color-forming layer and said protective layer;
- and
- (f) a release paper covering said adhesive layer.
Dependencies are inferred from the claim text.