INFORMATION RECORDING MEDIUM, AUTHENTICITY DETERMINATION METHOD THEREOF, AND AUTHENTICITY DETERMINATION SYSTEM

PROBLEM TO BE SOLVED: To determine the authenticity by itself, at low cost and with good security performance.SOLUTION: An authenticity determination system irradiates an information recording medium with exciting light, the information recording medium including an information recording layer conta...

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Hauptverfasser:	IWANAGA HIRONORI, WASHIZUKA JUNICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES BOOK COVERS BOOKBINDING CALCULATING CHECKING-DEVICES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COLOUR PRINTING COMPUTING CORRECTING FLUIDS COUNTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DYES FILES FILLING PASTES HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING HANDLING RECORD CARRIERS INKS LINING MACHINES LOOSE LEAVES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MOVABLE-STRIP WRITING OR READING APPARATUS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING 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 RECOGNITION OF DATA RECORD CARRIERS SPECIAL PRINTED MATTER STAMPS TRANSPORTING TYPEWRITERS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To determine the authenticity by itself, at low cost and with good security performance.SOLUTION: An authenticity determination system irradiates an information recording medium with exciting light, the information recording medium including an information recording layer containing a rare-earth fluorescent complex which can bring an emission intensity peak into site in two or more wavelengths. The system concurrently measures the emission intensity at least in two wavelengths to calculate a ratio thereof, and further collates the resultant with a predetermined ratio to determine the authenticity.