Title:
DATA SUPPORT WITH IDENTIFICATIONS WRITTEN THEREON BY MEANS OF A LASER BEAM AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO2005058610
Kind Code:
A3
Abstract:
The invention relates to a data support on which identifications (20, 22), in the form of patterns, letters, numbers and/or images have been applied by means of laser beams, which are visible due to local changes in the optical properties of the data support brought about by material changes generated by the laser beam. According to the invention, the data support comprises a laser-sensitive recording layer (26), transparent in the visible spectral range, provided with a surface relief in the form of a lenticulation (28). The identifications are written in the recording layer (26) with a laser beam through the lenticulation (28) from various angles and are visible on later viewing at the same angle. The data support is transparent at least in the region of the applied identifications (20, 22).
More Like This:
| JPH09188078 | MULTILAYER STRUCTURE AND MANUFACTURE THEREOF |
| JP4547791 | Confidential information medium |
Inventors:
BERGMANN MATTHIAS (DE)
ENDRES GUENTER (DE)
KRUSE GEORG (DE)
ENDRES GUENTER (DE)
KRUSE GEORG (DE)
Application Number:
PCT/EP2004/013634
Publication Date:
February 09, 2006
Filing Date:
December 01, 2004
Export Citation:
Assignee:
GIESECKE & DEVRIENT GMBH (DE)
BERGMANN MATTHIAS (DE)
ENDRES GUENTER (DE)
KRUSE GEORG (DE)
BERGMANN MATTHIAS (DE)
ENDRES GUENTER (DE)
KRUSE GEORG (DE)
International Classes:
B42D15/00; B42D15/10; (IPC1-7): B42D15/10; B42D15/00
Foreign References:
| EP0219012A2 | 1987-04-22 | |||
| DE19749789A1 | 1999-05-12 |
Download PDF:
Previous Patent: IMPROVEMENTS IN OR RELATING TO BOOKS OR BOOKLETS
Next Patent: A SIMULATED ROCK SURFACE PRODUCTION PROCEDURE
Next Patent: A SIMULATED ROCK SURFACE PRODUCTION PROCEDURE