Patent · US Active

Method of marking or inscribing a workpiece

US8487212B2 · kind B2 · utility

4Cited by

14References

7Claims

0Family size

Assignee

tesa SE · DE

Inventors

Arne Koops · Mölln, DE
Sven Reiter · Hamburg, DE
Bernd Lühmann · Norderstedt, DE

Key dates

Filing date	Oct 28, 2009
Grant date	Jul 16, 2013
Priority date	—
Expiry date	Dec 27, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C17/32
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention provides a method of and apparatus for marking or inscribing a workpiece (3) with high-energy radiation, more particularly with a laser beam (1), the workpiece (3) having a light-scattering surface (9) and the material of the workpiece (3) being transparent for the radiation wavelength, and a polymer matrix (7) being disposed on the workpiece (3) in such a way that the radiation passes through the workpiece (3) and its light-scattering surface (9) before impinging on the polymer matrix (7), characterized in that the light-scattering surface (9) of the workpiece (3) is wetted with a liquid or viscoelastic medium (11).

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