초록 ▼

A tamper-indicating label which includes (i) light-transmissive facestock, (ii) a light-transmissive imaged release coating covering a portion of the facestock so as to provide indicia, (iii) a contrast enhancement coating over the release coated surface of the facestock, and (iv) an adhesive coated

A tamper-indicating label which includes (i) light-transmissive facestock, (ii) a light-transmissive imaged release coating covering a portion of the facestock so as to provide indicia, (iii) a contrast enhancement coating over the release coated surface of the facestock, and (iv) an adhesive coated upon the contrast enhancement layer where the indicia provided by the release coating is not visible until the facestock is forcibly separated from the release coating after which the indicia becomes permanently visible and the label is provided with sufficient assembly cohesive strength to keep the label together as a single unit after the facestock is separated from the release coating and the indicia is rendered visually perceptible.

대표청구항 ▼

[ We claim:] [1.] A tamper-indicating label for application to a substrate, the label having an assembly cohesive strength and comprising sequential layers of:(a) a light-transmissive facestock;(b) an imaged release coating providing indicia on the label, said indicia being substantially invisible t

[ We claim:] [1.] A tamper-indicating label for application to a substrate, the label having an assembly cohesive strength and comprising sequential layers of:(a) a light-transmissive facestock;(b) an imaged release coating providing indicia on the label, said indicia being substantially invisible to the unaided eye until becoming permanently visible to the unaided eye when the release coating is separated from at least one of the other layers of the label; and(c) adhesive means for bonding the label to the substrate with an adhesive strength, said adhesive strength being less than the assembly cohesive strength of the label, to permit the label to be removed from the substrate without residual label fragments remaining on the substrate, and to keep the label together as a single unit after activation of the label.