发明名称 Wertdokument
摘要 The invention relates to a printed document having a value and comprising at least one authenticity feature in the form of a luminescent substance on the basis of a host lattice doped with at least one rare-earth metal. The host lattice absorbs essentially in the entire visible spectrum, can be excited in significant parts of the visible spectrum and is at least partly transparent at least in the wavelength range ranging from 0.8 mu m to 1.1 mu m. The host lattice also has a garnet or perovskite structure. The rare-earth metal emits in the wavelength range ranging from 0.8 mu m to 1.1 mu m.
申请公布号 DE19803997(A1) 申请公布日期 1999.08.05
申请号 DE1998103997 申请日期 1998.02.02
申请人 GIESECKE & DEVRIENT GMBH, 81677 MUENCHEN, DE 发明人 KAULE, WITTICH, DR., 82275 EMMERING, DE;SCHWENK, GERHARD, DR., 82178 PUCHHEIM, DE;STENZEL, GERHARD, DR., 82110 GERMERING, DE
分类号 B41M3/14;B42D15/00;B42D25/29;B42D25/378;C09K11/77;G01J1/58;(IPC1-7):B44F1/12;B42D15/10;G06K19/08 主分类号 B41M3/14
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