Anticounterfeiting method and device

A method of making a security device and the device are disclosed, wherein an embossable material is applied to a substrate in multiply connected regions. (A multiply connected region is one that has more than one continuous boundary). The regions have sufficient density of coverage to cause the emb...

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Bibliographic Details
Main Author MCGREW; STEPHEN P
Format Patent
LanguageEnglish
Published 20.05.1986
Edition4
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HOLOGRAPHIC PROCESSES OR APPARATUS
HOLOGRAPHY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHOTOGRAPHY
PHYSICS
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
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Summary:A method of making a security device and the device are disclosed, wherein an embossable material is applied to a substrate in multiply connected regions. (A multiply connected region is one that has more than one continuous boundary). The regions have sufficient density of coverage to cause the embossable material to appear substantially continuous to the unaided eye. A diffractive pattern is embossed into a plurality of the regions and a transparent coating is applied thereover to bond firmly to the substrate and embossable material. Removal of the transparent coating results in observable damage to the security device.
Bibliography:Application Number: US19820393107