Security document with halftone images and method for its manufacture

The invention relates to a method for manufacturing a security document by printing halftone images (28, 30) on opposite sides (12, 14) of a transparent region (26) of a substrate (16). Using a first and a second analog halftone image (A1, A2), it calculates a first and a second binary halftone imag...

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Bibliographische Detailangaben
1. Verfasser:	CHOSSON, Sylvain
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION
Online-Zugang:	Volltext bestellen
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