| 发明名称 |
Security marking for goods or packages, used in authentication or logistics tracking, comprises overprinting with inks having different spectral properties |
| 摘要 |
A first printing (3) absorbs the 800 nm wavelength significantly, whilst exhibiting little absorption above 1000 nm. The second printing (4) has no significant absorption at 800 nm, whilst absorbing significantly at 1000 nm.
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| 申请公布号 |
DE10149265(A1) |
申请公布日期 |
2003.04.17 |
| 申请号 |
DE2001149265 |
申请日期 |
2001.10.05 |
| 申请人 |
GIESECKE & DEVRIENT GMBH |
发明人 |
MAYER, KARLHEINZ;SAENGER, DIRK |
| 分类号 |
B41M3/14;B41M5/40;B42D15/00;B42D25/29;D21H21/48;G06K7/00;G06K7/12;G06K19/06;G06K19/077;G06K19/10;(IPC1-7):B44F1/12 |
主分类号 |
B41M3/14 |
| 代理机构 |
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代理人 |
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