Document securization method and a document securization device using printing a distribution of dots on said document
US8913299B2 · kind B2 · utility
16Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2013 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Oct 18, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S283/902
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An analogical mark printed on a document that includes a distribution of dots defined by a digital file, having, as a result of unanticipated unknowns in printing, an unpredictable variation, dot by dot, of at least one geometric characteristic of the printed dots where dots of the distribution of dots have, in the digital file, at least one geometric characteristic that digitally varies among dots, the geometric amplitude of the digital variation having the order of magnitude of said unpredictable variation and being less than an average dimension of the dots of the distribution of dots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.