PRINTED IMPORTANT DOCUMENT WITH LUMINESCENT AUTHENTICITY INDICATION

documents protected against forgery. SUBSTANCE: printed important document has at least one authenticity indication made by means of luminescent agent on base of crystal lattice alloyed by at least one rare-earth metal which absorbs radiation practically over entire visible region of spectrum; it is...

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Bibliographische Detailangaben
Hauptverfasser:	SHTENTSEL' GERKHARD, SHVENK GERKHARD, KAULE VITTIKH
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES ADVERTISING BOOK COVERS BOOKBINDING CALCULATING CHECKING-DEVICES CHEMISTRY COLORIMETRY COLOUR PRINTING COMPUTING COUNTING CRYPTOGRAPHY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DISPLAY DISPLAYING DYES EDUCATION FILES HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING HANDLING RECORD CARRIERS LABELS OR NAME-PLATES LINING MACHINES LOOSE LEAVES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MOVABLE-STRIP WRITING OR READING APPARATUS NATURAL RESINS PAINTS PERFORMING OPERATIONS PHYSICS POLISHES PRESENTATION OF DATA PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES RADIATION PYROMETRY RECOGNITION OF DATA RECORD CARRIERS SEALS SIGNS SPECIAL PRINTED MATTER STAMPS TESTING TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	documents protected against forgery. SUBSTANCE: printed important document has at least one authenticity indication made by means of luminescent agent on base of crystal lattice alloyed by at least one rare-earth metal which absorbs radiation practically over entire visible region of spectrum; it is excitable at essential sections of visible region of spectrum and is partially transparent at least within the following wave band: from 0.8 to l.l mcm. Rare-earth metal emits radiation in wave band of from 0.8 to 1.1 mcm; crystal lattice of base has structure of pomegranate or perovskite. Ytterbium, praseodymium or neodymium may be used as rare-earth metal. Protective element has at least substrate and luminescent agent on base of crystal lattice alloyed by at least one rare-earth metal. Luminescent agent may be admixed to printing ink, paper pulp and may be present on substrate or in its material. Substrate may be made from plastic or paper in form of protective filament or from composite fibers in form of plate or label. EFFECT: high degree of protection. 22 cl, 6 dwg