发明名称 DISPOSITIVO DI AUTENTICAZIONE A DIFFRAZIONE-RIFLESSIONE.
摘要 A reflective-diffractive coating layer, situated at the interface between a substrate layer and an overcoat layer of the device, is divided into a set of small, slightly separated regions. This allows a direct bond of the overcoat layer to the substrate layer within the separation areas, which direct bond provides a more secure bond than that provided by a bond of the coating layer to the substrate and overcoat layers.
申请公布号 IT1212089(B) 申请公布日期 1989.11.08
申请号 IT19830022796 申请日期 1983.09.06
申请人 RCA CORP. 发明人 MICHAEL THOMAS GALE;KARL HEINRICH KNOP;MARTIN EBNOETHER
分类号 G06K19/06;B42D15/10;B44F1/12;G03F7/09;G06K19/10;G07F7/08;G09F3/00 主分类号 G06K19/06
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