发明名称 |
Security document with optically excitable dyes for authenticity check |
摘要 |
A security document with optically excitable dyes for authenticity checking. Dyes are applied to or embedded in the security documents. The dyes are advantageously embedded in a carrier material which in conjunction with the dyes forms a laser-active element. Certain optically excitable dyes are incorporated in a security document in such a way that when the security and/or sensitive document is optically excited, the dyes embedded in the security and/or sensitive document resonate with the material of the securities and secure documents, so that a well-defined narrow spectrum of all excited materials is emitted.
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申请公布号 |
US6234537(B1) |
申请公布日期 |
2001.05.22 |
申请号 |
US19990374882 |
申请日期 |
1999.08.13 |
申请人 |
BUNDESDRUCKEREI GMBH |
发明人 |
GUTMANN ROLAND;AHLERS BENEDIKT;KAPPE FRANK;PAUGSTADT RALF;FRANZ-BURGHOLZ ARNIM |
分类号 |
B41M3/14;B42D15/00;(IPC1-7):B42D15/00 |
主分类号 |
B41M3/14 |
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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