Radiation imagery chemistry: process – composition – or product th – Holographic process – composition – or product
Reexamination Certificate
2006-06-02
2010-06-29
Angebranndt, Martin J (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Holographic process, composition, or product
C430S002000, C359S003000, C156S327000
Reexamination Certificate
active
07745065
ABSTRACT:
The invention provides (1) a volume hologram transfer foil comprising a substrate and protective layer, a volume hologram layer and a heat seal layer stacked on the substrate in this order, wherein a multilayer structure comprising the protective layer, the volume hologram layer and the heat seal layer in this order is releasable from the substrate, and (2) a volume hologram transfer foil wherein the above protective layer is used as a heat seal layer. The heat seal layer comprises a polyester resin having a glass transition temperature of −10° C. to −30° C. With the invention, thermo-compression adhesion of the volume hologram layer to any application member, especially a polyester resin card is improved, so that the invention provides a volume hologram transfer foil useful for prevention of illegal copying, and a volume hologram multilayer structure formed using such a transfer foil.
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Skiest handbook of Adhesives, 3rd Ed. pp. 488-498 (1990).
Dick Seal A-928 data sheet and English translation (3 pages ).
Azakami Minoru
Eto Koji
Angebranndt Martin J
DAI Nippon Printing Co., Ltd.
Sughrue & Mion, PLLC
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