Method of printing secure documents
US5983065A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Jul 23, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00925
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method including: PA1 providing a facility with at least one controlled access electronic printing machine; PA1 printing original documents with the controlled access electronic printing machine, wherein printed images formed thereby arise from marking materials containing at least one photoactive additive; PA1 equipping all uncontrolled access reprographic devices within the facility with a secure illumination source capable of exposing an object document with sufficient intensity to activate the photoactive additive; and PA1 illuminating the object document with the secure illumination source of the uncontrolled access reprographic device, wherein the object documents having original document images printed thereon cannot be copied or scanned in a normal copy or scan illumination interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.