EP 0978108 A2 20000209 - APPLICATION AND METHOD FOR CHECKING DOCUMENTS WITH EFFECTIVE OPTICAL DIFFRACTION SECURITY LAYER
Title (en)
APPLICATION AND METHOD FOR CHECKING DOCUMENTS WITH EFFECTIVE OPTICAL DIFFRACTION SECURITY LAYER
Title (de)
ANWENDUNG UND VERFAHREN ZUR PRÜFUNG VON DOKUMENTEN MIT BEUGUNGSOPTISCH WIRKSAMEN SICHERHEITSSCHICHTEN
Title (fr)
UTILISATION ET PROCEDE POUR LE CONTROLE DE DOCUMENTS A COUCHES DE SECURITE DIFFRINGENTES
Publication
Application
Priority
- DE 9801182 W 19980424
- DE 19718916 A 19970425
Abstract (en)
[origin: WO9849655A2] The invention relates to an application and a method for checking documents. Hitherto, documents with optical diffraction security layers, specially holograms, were checked by costly optical monitoring technology. The entire monitoring process was so time-consuming that the monitoring process could not be applied to fast operating processing machines. Rapid monitoring (as an authentication characteristic) constitutes a further security step in evaluating effective optical diffraction security layers. The effective optical diffraction layer has a discontinuous metallizing layer and/or partially metal layers and/or areas of metal layers on various planes. Several methods of measurement exist to detect electrical conductivity. In practice, the contactless capacitive method of measurement has proven to be more practical.
IPC 1-7
IPC 8 full level
G07D 1/00 (2006.01); G07D 7/06 (2006.01); G07D 7/00 (2016.01); G07D 7/026 (2016.01)
CPC (source: EP KR)
G07D 7/0032 (2017.05 - EP KR); G07D 7/026 (2013.01 - EP KR)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9849655 A2 19981105; WO 9849655 A3 19990204; AT E294427 T1 20050515; AU 8208498 A 19981124; BG 103839 A 20000428; BG 63811 B1 20030131; BR 9809776 A 20000905; CA 2294303 A1 19981105; CN 1253648 A 20000517; CZ 294452 B6 20050112; CZ 380099 A3 20000216; DE 19718916 A1 19981029; DE 59812753 D1 20050602; EP 0978108 A2 20000209; EP 0978108 B1 20050427; ES 2241148 T3 20051016; HU P0002699 A2 20001228; HU P0002699 A3 20040928; JP 2001524235 A 20011127; JP 2007242042 A 20070920; KR 20010020271 A 20010315; LV 12423 A 20000120; LV 12423 B 20000520; NO 994726 D0 19990929; NO 994726 L 19991222; PL 186435 B1 20040130; PL 336534 A1 20000703; PT 978108 E 20050930; RU 2185662 C2 20020720; TR 199902662 T2 20000221
DOCDB simple family (application)
DE 9801182 W 19980424; AT 98932026 T 19980424; AU 8208498 A 19980424; BG 10383999 A 19991028; BR 9809776 A 19980424; CA 2294303 A 19980424; CN 98804493 A 19980424; CZ 380099 A 19980424; DE 19718916 A 19970425; DE 59812753 T 19980424; EP 98932026 A 19980424; ES 98932026 T 19980424; HU P0002699 A 19980424; JP 2007108570 A 20070417; JP 54650098 A 19980424; KR 19997009872 A 19991025; LV 990167 A 19991123; NO 994726 A 19990929; PL 33653498 A 19980424; PT 98932026 T 19980424; RU 99122680 A 19980424; TR 9902662 T 19980424