Patent · US Active

Method and apparatus for marking glass

US8872870B2 · kind B2 · utility

4Cited by

6References

27Claims

0Family size

Assignee

Schott AG · DE

Inventors

André Witzmann · Waldershof, DE
Ulla Trinks · Mitterteich, DE

Key dates

Filing date	Aug 30, 2011
Grant date	Oct 28, 2014
Priority date	—
Expiry date	Aug 30, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06K1/126
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

In a method and apparatus for marking glass or a glass-like material a writing laser beam and the glass or the material are moved relative to each other in order to form an array of marks on the glass surface or material surface consisting of a plurality of discrete marks which are formed in discrete marking steps and are distributed along at least one direction. Marks directly adjacent to each other in a predetermined direction are formed in two marking steps, which are not carried out directly in succession one after the other. Thus, at least two series of marks are produced in the predetermined direction, wherein said marks are spaced at regular intervals from each other and are interleaved in the predetermined direction. As a result, and because of the temperature regime according to the invention during encoding, a particularly low-stress, crack-free marking of glass can be accomplished.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.