Patent ID: 7579061

Claim:
A color changing coated and or laminated intermediate adapted for use for tamper evident color changing or masking substrates to reveal information upon the separation of layers of the intermediate, comprising: (i) a colored translucent layer having an upper surface and a lower surface; (ii) a second translucent colored layer having an upper surface and a lower surface, the upper surface being intimately and removably adhered to the lower surface of said colored translucent layer (i) to form a combined translucent color that is the product of the combination of the colors of the two layers or is the dominant color of the two layers; and (iii) a reversible separable interface at the interface of the two colored layers that when separated produces a color change back to the original colors of the separate colored translucent layers said intermediate having a pressure sensitive adhesive layer and removable backing layer to affix the intermediate to an article; or a thermally activated adhesive layer to affix the intermediate to an article and indicia on said article printed in a color and shade the same as the color of the combined layers so it is masked by the combined colored translucent layers when they are affixed over the indicia on the article, such indicia only visible when the translucent colored layers are separated.