发明名称 DATA CARRIER HAVING AN INTAGLIO MOTIF
摘要 The invention relates to a data carrier (10) having a recess printing motif (12) that, when viewed with the naked eye, appears as a halftone image having a continuous tonal value progression, wherein the recess printing motif (12) comprises a plurality of fine, projecting printed lines (20) not resolvable by the naked eye that are modulated in the width and/or height thereof in order to produce the different tonal values of the halftone image.
申请公布号 CA2699234(C) 申请公布日期 2016.03.29
申请号 CA20082699234 申请日期 2008.09.10
申请人 GIESECKE & DEVRIENT GMBH 发明人 MEINDL, KLAUS;ADAMCZYK, ROGER;BALDUS, CHRISTOF;MAYER, KARLHEINZ;FRANZ, PETER
分类号 B42D15/00;B41N1/06 主分类号 B42D15/00
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