System for producing secure toner-based images and methods of forming and using the same
US6998211B2 · kind B2 · utility
24Cited by
12References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Feb 14, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24884
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method for printing documents that are difficult to forge and that are easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath the surface and a substrate that includes a migration agent for facilitating the migration of the dye through at least a portion of the substrate. The migration-enhancing agent may be coated onto a portion of the substrate or embedded within the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.