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Proceedings Paper

Qualification of security printing features
Author(s): Steven J. Simske; Jason S. Aronoff; Jordi Arnabat
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Paper Abstract

This paper describes the statistical and hardware processes involved in qualifying two related printing features for their deployment in product (e.g. document and package) security. The first is a multi-colored tiling feature that can also be combined with microtext to provide additional forms of security protection. The color information is authenticated automatically with a variety of handheld, desktop and production scanners. The microtext is authenticated either following magnification or manually by a field inspector. The second security feature can also be tile-based. It involves the use of two inks that provide the same visual color, but differ in their transparency to infrared (IR) wavelengths. One of the inks is effectively transparent to IR wavelengths, allowing emitted IR light to pass through. The other ink is effectively opaque to IR wavelengths. These inks allow the printing of a seemingly uniform, or spot, color over a (truly) uniform IR emitting ink layer. The combination converts a uniform covert ink and a spot color to a variable data region capable of encoding identification sequences with high density. Also, it allows the extension of variable data printing for security to ostensibly static printed regions, affording greater security protection while meeting branding and marketing specifications.

Paper Details

Date Published: 9 February 2006
PDF: 12 pages
Proc. SPIE 6075, Optical Security and Counterfeit Deterrence Techniques VI, 607508 (9 February 2006); doi: 10.1117/12.641762
Show Author Affiliations
Steven J. Simske, Hewlett-Packard Labs. (United States)
Jason S. Aronoff, Hewlett-Packard Labs. (United States)
Jordi Arnabat, Hewlett-Packard Co. (Spain)

Published in SPIE Proceedings Vol. 6075:
Optical Security and Counterfeit Deterrence Techniques VI
Rudolf L. van Renesse, Editor(s)

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