发明名称 |
Trykt værdidokument med et luminescerende ægthedskendetegn |
摘要 |
<p>The invention concerns a printed valuable document with at least one authentication feature in the form of a luminescent substance based on a host lattice doped with at least one rare earth metal. The host lattice largely absorbs in the visible region of the spectrum, is excitable at least in parts of the visible region of the spectrum and transparent at least in partial areas of the IR spectral region. The luminescent substance is present in the volume of the valuable document in such a concentration that the characteristics of the valuable document just remain unimpaired. The rare earth metal concerned is thulium.</p> |
申请公布号 |
DK0975468(T3) |
申请公布日期 |
2004.08.16 |
申请号 |
DK19990907458T |
申请日期 |
1999.01.29 |
申请人 |
GIESECKE & DEVRIENT GMBH |
发明人 |
KAULE, WITTICH;SCHWENK, GERHARD;STENZEL, GERHARD |
分类号 |
B41M3/14;B42D15/00;B42D25/29;C09K11/77;G01J1/58;G06K19/06;(IPC1-7):B41M3/14;B42D15/10;G06K19/14;G07D7/00;G09F3/00 |
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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