发明名称 |
Data card comprising a laser recording medium and a thin glass layer |
摘要 |
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.
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申请公布号 |
US6120907(A) |
申请公布日期 |
2000.09.19 |
申请号 |
US19980177505 |
申请日期 |
1998.10.23 |
申请人 |
AGFA-GEVAERT, N.V. |
发明人 |
TAHON, JEAN-PIERRE;VERLINDEN, BART;VERMEULEN, LEO;VAN GORP, HERMAN |
分类号 |
B32B17/10;B32B27/32;B32B27/36;G02B1/11;G02F1/1333;G03C1/76;G03C1/795;G03C1/85;G03C1/91;G06K19/02;G06K19/04;G06K19/06;H01L23/00;H01L23/498;H01L23/58;H01L51/52;(IPC1-7):B32B3/00 |
主分类号 |
B32B17/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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