Optics: measuring and testing – Document pattern analysis or verification
Reexamination Certificate
2005-08-30
2005-08-30
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
Document pattern analysis or verification
C250S338100, C250S556000
Reexamination Certificate
active
06937322
ABSTRACT:
Methods and apparatuses for testing the authenticity of objects printed with security link are provided which measure light emanating from, in particular reflected or transmitted by, an object to be checked. To guarantee especially reliable authenticity testing, it is provided that light emanating from the object to be checked is detected indifferent spectral regions outside the visible spectral region. To obtain easily operated and safe authenticity testing, it is provided that light emanating from the object is detected at a plurality of places on the object in at least two selected spectral regions. A test series is produced for each spectral region wherein two test series adapted to each other, and authenticity testing is then performed by comparing the adapted two test series.
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Gerz Christoph
Thierauf Klaus
Bacon & Thomas PLLC
Giesecke & Devrient GmbH
Merlino Amanda
Toatley , Jr. Gregory J.
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