EP 0743128 B1 20020227 - Process and device for marking products of transparent (solid) material with a laser
Title (en)
Process and device for marking products of transparent (solid) material with a laser
Title (de)
Verfahren und Vorrichtung zur Kennzeichnung von Erzeugnissen aus transparenten (festen) Werkstoffen mittels Laser
Title (fr)
Procédé et dispositif pour le marquage de produits en matériaux transparents (solides) au moyen d'un laser
Publication
Application
Priority
LT 95051 A 19950512
Abstract (en)
[origin: EP0743128A1] Method of marking products made of transparent materials involves (i) concentration of a laser beam (2) in the material (5), which does not absorb the beam, at a predetermined location (4), (ii) destruction of the material by laser pulses and (iii) formation of the marking symbol by displacement of the laser beam. Destruction of the material at that location takes place in two stages. In the first stage, the resistance of the material to laser radiation is altered, while, in the second stage, destruction of the material takes place at that location. Also claimed is an appts. for implementation of the method.
IPC 1-7
IPC 8 full level
B23K 26/00 (2006.01); B44B 7/00 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0743128 A1 19961120; EP 0743128 B1 20020227; AT E213681 T1 20020315; DE 59608777 D1 20020404; LT 4108 B 19970127; LT 95051 A 19961125
DOCDB simple family (application)
EP 96106863 A 19960501; AT 96106863 T 19960501; DE 59608777 T 19960501; LT 95051 A 19950512