EP 2174797 A1 20100414 - Laser-marked document showing a colour-shift effect

Title (en)

Laser-marked document showing a colour-shift effect

Title (de)

Laser-markiertes Dokument, das einen wechselnden Farbeffekt zeigt

Title (fr)

Document marqué au laser doté d'un effet de décalage de couleur

Publication

EP 2174797 A1 20100414 (EN)

Application

EP 08017527 A 20081007

Priority

EP 08017527 A 20081007

Abstract (en)

Document comprising a coating containing at least one sort of effect pigments, wherein said document also comprises at least one laser mark having a high contrast and a strong colour shift effect Said document is obtainable by a process, wherein, a document comprising a coating containing at least one sort of effect pigments which show different colours under different viewing angles is treated on at least a part of the coated area with a pulsed laser beam at a rate of greater than 500 mm/s and a laser mark having a colour shift effect is obtained. The authenticity of the document can be easily checked by visual inspection from different viewing angles.

IPC 8 full level

B42D 15/00 (2006.01); B41M 3/14 (2006.01); B41M 5/24 (2006.01); B42D 15/10 (2006.01)

CPC (source: EP US)

B41M 3/148 (2013.01 - EP); B41M 5/24 (2013.01 - EP); B42D 25/29 (2014.10 - EP); B42D 25/41 (2014.10 - EP US); B41M 5/26 (2013.01 - EP); B42D 2033/20 (2022.01 - EP); B42D 2035/24 (2022.01 - EP)

Citation (applicant)

DE 2836526 A1 19790322 - FIAT SPA
US 4740269 A 19880426 - BERGER ERICH [AT], et al
DE 19544130 A1 19970528 - GIESECKE & DEVRIENT GMBH [DE]
DE 19704478 A1 19980813 - MERCK PATENT GMBH [DE]
DE 19732860 A1 19990204 - MERCK PATENT GMBH [DE]
DE 10008851 A1 20010830 - GIESECKE & DEVRIENT GMBH [DE]
DE 4243987 A1 19940630 - GAO GES AUTOMATION ORG [DE]
WO 02074548 A2 20020926 - SHERWOOD TECHNOLOGY LTD [GB], et al
WO 2005012442 A1 20050210 - SHERWOOD TECHNOLOGY LTD [GB], et al
DE 10232786 A1 20040212 - GIESECKE & DEVRIENT GMBH [DE]
DE 10247591 A1 20040422 - GIESECKE & DEVRIENT GMBH [DE]
EP 1658992 A1 20060524 - EUROPEAN CENTRAL BANK [DE]
US 6395191 B1 20020528 - SCHELL KAREL JOHAN [NL]
US 2006141391 A1 20060629 - KLEIN SYLKE [DE], et al

Citation (search report)

[XD] US 2006141391 A1 20060629 - KLEIN SYLKE [DE], et al
[XA] DE 102006057507 A1 20080612 - MERCK PATENT GMBH [DE]
[X] WO 2007062785 A2 20070607 - MERCK PATENT GMBH [DE], et al
[X] WO 2005108110 A1 20051117 - GIESECKE & DEVRIENT GMBH [DE], et al
[A] US 6017972 A 20000125 - HARRIS RONALD M [US], et al
[A] WO 2004101890 A1 20041125 - MERCK PATENT GMBH [DE], et al
[A] EP 1717059 A1 20061102 - VITRO LASER GMBH [DE]

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

EP 2174797 A1 20100414

DOCDB simple family (application)

EP 08017527 A 20081007