发明名称 |
CODING SYSTEM FOR SECURITY DOCUMENTS |
摘要 |
<p>The invention relates to a composition for coding having at least one pair of mutually associated luminescent substances having first and second luminescent substances which emit in a joint emission range located outside the visible spectral range. The emission spectra of the first and second luminescent substances overlap in at least a subrange of the stated emission range such that the emission spectrum of the first luminescent substance is complemented by the emission spectrum of the second luminescent substance.</p> |
申请公布号 |
EP1673233(B1) |
申请公布日期 |
2007.02.21 |
申请号 |
EP20040765836 |
申请日期 |
2004.10.05 |
申请人 |
GIESECKE & DEVRIENT GMBH |
发明人 |
GIERING, THOMAS;RAUSCHER, WOLFGANG |
分类号 |
B42D15/00 |
主分类号 |
B42D15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|