发明名称 DATENTRÄGER UND VERFAHREN ZU SEINER HERSTELLUNG
摘要 The invention relates to a data carrier, such as an identity card, credit card or the like, with at least one plastic layer having first diffusely light-scattering properties at least in a partial area due to its surface quality. In this area information is provided by means of a laser in the form of local changes of surface quality which have second diffusely light-scattering properties so that the information is readable at least at a certain viewing angle but has no color contrast with its surroundings.
申请公布号 AT180720(T) 申请公布日期 1999.06.15
申请号 AT19950120144T 申请日期 1995.12.20
申请人 GIESECKE & DEVRIENT GMBH 发明人 BERNECKER, OTTO, DR.
分类号 B42D25/00;B42D25/41;B42D25/43;G03H1/18;G06K19/06;G06K19/10 主分类号 B42D25/00
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