BASE FOR MAGNETIC RECORDING CARD AND MAGNETIC RECORDING CARD

PROBLEM TO BE SOLVED: To eliminate unevenness on the surface and make the fiber layout pattern undetectable from outside so as to prevent forgery and alteration, by causing a magnetic card to have a multilayer structure including a white polyester layer containing a magnetically sensitive fiber of a...

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Bibliographische Detailangaben
Hauptverfasser:	KAMISAKA TASUKU, MAEDA KOZO, MIYAGI KIYOSHI, MATSUOKA MIKIO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES BASIC ELECTRIC ELEMENTS BOOK COVERS BOOKBINDING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DYES ELECTRICITY FILES FILLING PASTES INDUCTANCES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LOOSE LEAVES MAGNETS 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 PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SPECIAL PRINTED MATTER TRANSFORMERS TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To eliminate unevenness on the surface and make the fiber layout pattern undetectable from outside so as to prevent forgery and alteration, by causing a magnetic card to have a multilayer structure including a white polyester layer containing a magnetically sensitive fiber of a thermoplastic resin. SOLUTION: This magnetic card includes a white polyester layer 1 containing a magnetically sensitive fiber of a thermoplastic resin, and a white polyester layer 2 containing fine cavities adhered to the layer 1 via an adhesive layer 3. In this case, it is preferred that the thermoplastic resin composition is a polyester resin which is not deformed or warped at a temperature of 80 deg.C or higher, is consideration of safety in storing and handling the card. Particularly, it is preferred the thermoplastic resin composition is polyethylene terephthalate of 80wt.% or more in view of characteristics and economy. By causing the magnetic card to have a multilayer structure, unevenness on the surface of the card made of the magnetically sensitive fiber, the layout of which is not reproducible, is eliminated, and reading of proper information is ensured. At the same time, the fiber layer pattern is made undetectable from outside, thus preventing forgery and alteration.