EP 4272972 A1 20231108 - METHOD FOR LASER ENGRAVING AND/OR LASER MARKING, LASER MARKED AND/OR ENGRAVED ARTICLE AND ARTICLE FOR LASER ENGRAVING AND/OR LASER MARKING
Title (en)
METHOD FOR LASER ENGRAVING AND/OR LASER MARKING, LASER MARKED AND/OR ENGRAVED ARTICLE AND ARTICLE FOR LASER ENGRAVING AND/OR LASER MARKING
Title (de)
VERFAHREN ZUM LASERGRAVIEREN UND/ODER LASERMARKIEREN, LASERMARKIERTER UND/ODER GRAVIERTER GEGENSTAND UND GEGENSTAND ZUM LASERGRAVIEREN UND/ODER LASERMARKIEREN
Title (fr)
PROCÉDÉ DE GRAVURE AU LASER ET/OU DE MARQUAGE AU LASER, ARTICLE MARQUÉ ET/OU GRAVÉ AU LASER ET ARTICLE POUR GRAVURE AU LASER ET/OU MARQUAGE AU LASER
Publication
Application
Priority
EP 22171556 A 20220504
Abstract (en)
The invention is directed to a method for laser engraving and/or laser marking comprising the steps of:- providing a substrate with at least one layer, wherein the at least one layer comprises a polymer and an irreversible thermochromic pigment,- generating a carbon trace or vapor trace within or on the at least one layer by irradiating the substrate with a pulsed laser beam, such that a focus spot of the laser beam is within or on the at least one layer at a first predetermined position, and- irradiating the substrate with the pulsed laser beam such that the focus spot of a consecutive laser pulse is within or on the at least one layer at a predetermined consecutive position and a distance between the first position and the consecutive position is less or equal to twofold a diameter of the carbon trace or vapor trace.Furthermore, the invention is directed to a laser marked and/or engraved article produced by said method and to an article for laser engraving and/or laser marking.
IPC 8 full level
B41M 5/24 (2006.01); B41M 5/28 (2006.01); B41M 5/34 (2006.01); B41M 5/26 (2006.01)
CPC (source: EP)
B41M 5/24 (2013.01); B41M 5/28 (2013.01); B41M 5/34 (2013.01); B41M 5/267 (2013.01); B41M 5/284 (2013.01); B41M 2205/04 (2013.01); B41M 2205/42 (2013.01)
Citation (applicant)
FR 3106527 A1 20210730 - OLIKROM [FR]
Citation (search report)
- [XI] US 2006068315 A1 20060330 - GORE MAKARAND P [US]
- [XI] EP 0993964 A2 20000419 - MARKEM CORP [US]
- [XY] US 2007238045 A1 20071011 - BROCKLIN ANDREW L V [US], et al
- [Y] US 2008250954 A1 20081016 - DEPTA GEORG [DE], et al
- [XA] US 2006241225 A1 20061026 - BIELEK YAN [US], et al
- [YA] US 6022648 A 20000208 - JACOBSON JOSEPH M [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 22171556 A 20220504