Optical record cards

An optical information storage card having a rectangular format, said card comprising: a substrate having, on at least one side thereof, surface relief formations forming an optically machine readable information surface; and, a protection layer being in overlying juxtaposed relationship to said...

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Bibliographische Detailangaben
Hauptverfasser:	SLAFER, WARREN D, KIME, MILFORD B
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BOOK COVERS BOOKBINDING CALCULATING COLOUR PRINTING COMPUTING COUNTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES HANDLING RECORD CARRIERS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LINING MACHINES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHYSICS 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
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Beschreibung
Zusammenfassung:	An optical information storage card having a rectangular format, said card comprising: a substrate having, on at least one side thereof, surface relief formations forming an optically machine readable information surface; and, a protection layer being in overlying juxtaposed relationship to said information surface; said substrate and said protection layer being transmissive to a selected range of electromagnetic radiation usable for optically reading said information surface; said information surface having a generally spiral and/or concentric format whereby said information surface can be read as said card is rotated about at least one axis.