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Sinopsis
Describes current optical techniques to prevent fraud and counterfeiting. Chapters discuss forensic aspects of document counterfeit, evaluation of document fraud resistance, historical development of security printing, security papers and special effects, modulation of printed gratings, holograms, kinegrams, zero-order grating microstructures, iridescent optically variable devices, thin films, liquid crystal, retroreflective security devices, noniridescent optically variable devices, laminates, and silver diffraction transfer imaging. Annotation copyright Book News, Inc. Portland, Or.
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Reseña del editor
This work presents a review of optical security in the fields of paper and printing technology, embossed microgratings, layered microstructures, other optically variable security devices and laminates. The text provides an evaluation of the various security techniques and future developments and features an appendix with actual samples of various optical security options such as holograms, kinegrams, pixelgrams, pearl lustre inks, thin film devices and security papers with optically variable enclosures.
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