Method to apply an invisible mark on a media
US7965862B2 · kind B2 · utility
22Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2006 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Oct 1, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00884
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present application aims to propose a solution for embedding invisible mark suitable for very large production volumes. This is achieved by a method for applying an invisible mark on a media based on a pattern, and comprising the following steps: determining an area to apply this mark, applying a transparent or semi-transparent substance, on the media, said substance being modulated with the active dots to form the pattern by modifying the quantity of the substance at each active dot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.