Breiner & Breiner
Data card comprising a laser recording medium and a thin glass layer
 According to the present invention a data card is provided which comprises a heat-mode laser recording medium on a support and wherein said laser recorder medium is covered by a thin flexible glass layer. The data card has a higher mechanical strength, an improved shelf-life and offers better security with regard to counterfeiting. The heat-mode laser recording medium is preferably a metal layer of which the optical reflectivity or density can be changed by laser exposure. The glass layer is preferably a borosilicate glass having a thickness less than 850 .mu.m. 
Agfa-Gevaert, N.V.
Y H B B B G G B H G B B H G G G H G G B Y H G G B G H G G G B H H G
Y10S H01L B42D B32B B32B G03C G06K B32B H01L G03C B42D B32B H01L G02B G02B G03C H01L G02F G02F B32B Y10S H01L G03C G06K B32B G06K H01L G03C G03C G03C B32B H01L H01L G02F
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Herman Bart Jean-Pierre Leo
Van Gorp Verlinden Tahon Vermeulen