DEGREE CARD

PROBLEM TO BE SOLVED: To prevent the alteration and illegal use of a prepaid card. SOLUTION: Relating to this degree card, a thermosensitive layer 3 is provided on a substrate layer 4, and a magnetic recording layer 1 and a second- dimensional bar code layer 2 are formed on the thermosensitive layer...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	ITOU HISAO
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING CHECKING-DEVICES COIN-FREED OR LIKE APPARATUS COMPUTING COUNTING HANDLING RECORD CARRIERS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
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