Improvements in watermarking

A watermark formation element 20 formed by a 3D printing process is configured to produce at least one watermarked region and at least one non-watermarked region for a single document cut from a paper web. The element may produce at least two watermarks for a single document. The element may produce...

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Bibliographische Detailangaben
Hauptverfasser:	Christopher John Ames, Paul Howland, Adrian Donald Ash
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METHODS OF PRODUCING PAPER THEREON PAPER-MAKING PAPER-MAKING MACHINES PERFORMING OPERATIONS POWDER METALLURGY PRODUCTION OF CELLULOSE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TEXTILES TRANSPORTING WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A watermark formation element 20 formed by a 3D printing process is configured to produce at least one watermarked region and at least one non-watermarked region for a single document cut from a paper web. The element may produce at least two watermarks for a single document. The element may produce watermarked and non-watermarked regions for multiple identical or non-identical documents cut from the paper web. The watermark element may be formed directly on a foraminous layer 10. The document may be a secure one such as a banknote, passport, certificate or ticket