发明名称 METHOD FOR PRODUCING LASER-WRITABLE DATA CARRIERS AND DATA CARRIER PRODUCED ACCORDING TO THIS METHOD
摘要 The invention relates to a method for producing a data carrier which has a laser-markable layer and a transparent, optically variable layer which overlaps said laser-markable layer at least in some areas. According to the method, visible markings which at least partially overlap the optically variable layer are produced in the laser-markable layer after said optically variable layer has been applied. The invention also relates to a data carrie r produced according to this method and to a semi-finished product such as a data carrier blank, provided for processing further according to the method.
申请公布号 CA2401071(A1) 申请公布日期 2001.08.30
申请号 CA20012401071 申请日期 2001.02.22
申请人 GIESECKE & DEVRIENT GMBH 发明人 BRAUN, ECKHARD
分类号 B41M3/14;B42D15/00;B42D25/00;B42D25/41;D21H21/40;G06K1/12;G06K19/06 主分类号 B41M3/14
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