Global Patent Index - EP 2147799 A1

EP 2147799 A1 20100127 - Securing of a printed image using a laser beam

Title (en)

Securing of a printed image using a laser beam

Title (de)

Sicherung eines gedruckten Bilds mit HIlfe eines Laserstrahls

Title (fr)

Sécurisation d'une image imprimée au moyen d'un faisceau laser

Publication

EP 2147799 A1 20100127 (FR)

Application

EP 08305411 A 20080721

Priority

EP 08305411 A 20080721

Abstract (en)

The method involves arranging a diffractive lens (55) on a path of a laser beam (52). The lens is arranged in upstream or downstream of a focusing device (56) in a manner to modify a shape of the laser beam and to print pixels (61) having specific shape on a printable medium (10). The lens is placed in upstream of the focusing device by driving the lens in rotation at a predetermined speed during printing in a manner to print the pixels.

Abstract (fr)

La présente invention concerne la sécurisation d'une image imprimée au moyen d'un faisceau laser (52). Pour cela, une lentille (55) est disposée sur le chemin du faisceau laser (52), en amont ou en aval d'un dispositif de focalisation (56), de manière à déformer le faisceau laser et à conférer aux pixels imprimés (61) résultants une forme spécifique.

IPC 8 full level

B41M 3/14 (2006.01); B41J 2/435 (2006.01); B41M 5/26 (2006.01)

CPC (source: EP)

B41J 2/465 (2013.01); B41M 3/14 (2013.01); B41M 5/26 (2013.01)

Citation (applicant)

EP 1747897 A1 20070131 - MUEHLBAUER AG [DE]

Citation (search report)

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 2147799 A1 20100127; EP 2303589 A1 20110406; EP 2303589 B1 20140702; WO 2010010073 A1 20100128

DOCDB simple family (application)

EP 08305411 A 20080721; EP 09800040 A 20090720; EP 2009059323 W 20090720