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
WO2009036916(A1)
申请公布日期
2009.03.26
申请号
WO2008EP07388
申请日期
2008.09.10
申请人
GIESECKE & DEVRIENT GMBH;MEINDL, KLAUS;ADAMCZYK, ROGER;BALDUS, CHRISTOF;MAYER, KARLHEINZ;FRANZ, PETER
发明人
MEINDL, KLAUS;ADAMCZYK, ROGER;BALDUS, CHRISTOF;MAYER, KARLHEINZ;FRANZ, PETER