Thin-film devices in security printing inks

Haim Bretler

doi:10.1117/12.17916

1 April 1990 Thin-film devices in security printing inks

Haim Bretler

Proceedings Volume 1210, Optical Security and Anticounterfeiting Systems; (1990) https://doi.org/10.1117/12.17916
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

With the advent, some years ago, of better and lower priced colour photocopiers, it was recognized that these machines presented a potential for unauthorized reproduction of currency and other paper value.

Citation Download Citation

Haim Bretler "Thin-film devices in security printing inks", Proc. SPIE 1210, Optical Security and Anticounterfeiting Systems, (1 April 1990); https://doi.org/10.1117/12.17916

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