Patent ID: 6659507
Filing Date: 2003-12-09
Classification: G09F,H01L,Y10S,Y10T

Abstract:
A tamper-apparent device, comprising:a clear protective layer having opposed surfaces; a thin patterned layer of radiation cast resin, said radiation cast resin cast onto one surface of the protective layer such that some portions of said one surface of the protective layer are covered by the patterned layer, and other portions of said one surface of said protective layer are not covered by the patterned layer; a radiation cast holographic image layer cast onto said patterned layer and the portions of said one surface of said protective layer that are not covered by said patterned layer; a strongly attached reflective layer attached to said holographic image layer; and an adhesive layer attached to said reflective layer for affixing the device to a substrate; and wherein said holographic image layer bonds more strongly to the non-covered portions of said one surface of said protective layer than said patterned layer such that when said protective layer is separated from said device said holographic image layer cast onto said patterned layer breaks from said patterned layer to form a break pattern of said holographic image layer.