ROTOGRAVURE PRINTING PROCESSES FOR PRODUCING OPTICALLY VARIABLE SECURITY FEATURES

The present invention is related to the filed of optically variable security elements comprising a region based on a single cured ink comprising a cholesteric liquid crystal polymer, said region having at least two, preferably at least three, patterns exhibiting, at at least one viewing angle, a dif...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	VUILLEUMIER, LUCIEN, PASQUIER, CECILE, GARNIER, CHRISTOPHE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	COLOUR PRINTING LINING MACHINES PERFORMING OPERATIONS PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES STAMPS TRANSPORTING TYPEWRITERS
Online-Zugang:	Volltext bestellen
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