EP 2571699 A1 20130327 - METHOD AND DEVICE FOR PRODUCING COLOUR IMAGES BY WAY OF A UV LASER ON PIGMENTED SUBSTRATES, AND PRODUCTS PRODUCED AS A RESULT
Title (en)
METHOD AND DEVICE FOR PRODUCING COLOUR IMAGES BY WAY OF A UV LASER ON PIGMENTED SUBSTRATES, AND PRODUCTS PRODUCED AS A RESULT
Title (de)
VERFAHREN UND VORRICHTUNG ZUR ERZEUGUNG VON FARBBILDERN MIT EINEM UV-LASER AUF PIGMENTIERTEN SUBSTRATEN UND DADURCH HERGESTELLTE PRODUKTE
Title (fr)
PROCÉDÉ ET DISPOSITIF POUR GÉNÉRER DES IMAGES COULEUR AVEC UN LASER UV SUR DES SUBSTRATS PIGMENTÉS ET PRODUITS FABRIQUÉS AINSI
Publication
Application
Priority
- CH 18662010 A 20101108
- EP 2011066358 W 20110920
Abstract (en)
[origin: WO2012062505A1] A method is described for producing a character, pattern, symbol and/or image (8) on a substrate (2) by way of pigment particles (1) which are arranged thereon and lose their colour effect under the action of a laser (23), wherein different pigment particles (1) with at least three different colour effects are arranged on and/or in the substrate (2). The invention is distinguished by the following method steps: (a) production of a colour chart (14), in which the individual colour effect of individual pigment particles (1) or individual clusters of pigment particles is contained as a function of their spatial coordinate on and/or in the substrate (2); (b) spatially resolved irradiation, which changes the colour effect of only individual pigment particles (1) or individual clusters of pigment particles, by way of a laser (23) at a single frequency on the basis of the colour chart (14) in order to produce a resulting colour effect. Furthermore, the present invention relates to substrates, in particular security documents, produced using a method of this type, and devices for carrying out methods of this type.
IPC 8 full level
B41M 3/14 (2006.01)
CPC (source: EP US)
B41J 2/442 (2013.01 - US); B41M 3/14 (2013.01 - EP US); B41M 5/28 (2013.01 - EP US); B41M 5/34 (2013.01 - EP US); B42D 15/00 (2013.01 - US); Y10S 462/903 (2013.01 - EP US)
Citation (search report)
See references of WO 2012062505A1
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
DOCDB simple family (publication)
WO 2012062505 A1 20120518; CN 103201118 A 20130710; CN 103201118 B 20150107; EP 2571699 A1 20130327; EP 2571699 B1 20131030; ES 2442777 T3 20140213; JP 2014504964 A 20140227; JP 5391369 B1 20140115; US 2013314486 A1 20131128; US 8896647 B2 20141125
DOCDB simple family (application)
EP 2011066358 W 20110920; CN 201180053916 A 20110920; EP 11757669 A 20110920; ES 11757669 T 20110920; JP 2013537050 A 20110920; US 201113883591 A 20110920