Method of generating a laser mark in a security document, and security document of this kind
US8298753B2 · kind B2 · utility
1Cited by
11References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2007 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Aug 10, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/26
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to a method of generating a laser marking in a security document by means of at least one laser beam, the security document having at least one laser-markable layer and also at least one reflecting layer which overlaps at least partly with the at least one laser-markable layer and has opaque regions. The at least one reflecting layer has at least one transparent region and, at least visually, is not significantly altered by the laser treatment of the laser-markable layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.