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Proceedings Paper

Creating variable data UV signals for security applications
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Paper Abstract

Substrates found in standard digital color printing applications frequently contain optical brightening agents (OBAs). These agents fluoresce under near UV light and are predominantly intended to increase the perceived paper white and thus create a paper look and feel which is preferred by customers. The fluorescence phenomenon poses a considerable challenge in standard color management applications, however, the problem description can be inverted and information can be embedded in a printed color image that is perceptually invisible under normal illumination, but revealed via substrate fluorescence under UV illumination. From a practical standpoint, the approach works with standard high brightness office-type papers and does not require any special materials or media, or any modifications to the imaging path inside the machine. This means that certain security aspects can now produced in an essentially cost-neutral way[1].

Paper Details

Date Published: 28 January 2008
PDF: 10 pages
Proc. SPIE 6807, Color Imaging XIII: Processing, Hardcopy, and Applications, 68070K (28 January 2008); doi: 10.1117/12.769000
Show Author Affiliations
Reiner Eschbach, Xerox Research Ctr. Webster (United States)
Raja Bala, Xerox Research Ctr. Webster (United States)
Shen Wang, Xerox Research Ctr. Webster (United States)

Published in SPIE Proceedings Vol. 6807:
Color Imaging XIII: Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Shoji Tominaga, Editor(s)

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