Patent ID: 7910186

Claim:
A multilayered volume hologram structure, characterized by comprising a substrate for a certificate or the like, and a first adhesive layer, a volume hologram layer and a surface protective film laminated on said substrate in the described order, wherein said surface protective film is on a viewing side of the multilayered volume hologram structure, and said volume hologram layer has been recorded in a hologram recording material layer comprising a matrix polymer, a photopolymerizable compound, a photopolymerization initiator and a sensitizing dye, wherein said volume hologram layer and said surface protective film are directly laminated on each other and comprise patterned areas of increased or decreased mutual adhesion therebetween, so that upon an intentional release of a multilayer structure from said substrate, said volume hologram layer is broken or elongated while said volume hologram layer is separated into a portion adhering to a substrate side and a portion adhering to a surface protective film side, wherein said volume hologram layer and said surface protective film are laminated on each other in absence of a layer therebetween.