Improvements in security papers and documents

A security paper is provided that includes at least one layer of fibrous substrate and a security deposit thereon. The at least one layer has a main body of a substantially uniform thickness and at least one aperture and/or zone of reduced thickness. The reduced thickness is non-zero and at least 15...

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Bibliographische Detailangaben
Hauptverfasser:	Matthew Charles Sugdon, Peter McLean Henderson, Georgina Stewart
Format:	Patent
Sprache:	eng
Schlagworte:	BOOK COVERS BOOKBINDING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES IMPREGNATING OR COATING OF PAPER LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRODUCTION OF CELLULOSE PULP COMPOSITIONS SPECIAL PRINTED MATTER TEXTILES TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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