Secure ink-jet printing for verification of an original document
US6830327B2 · kind B2 · utility
7Cited by
25References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2001 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Oct 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/043
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides ink-jet inks, systems, and methods for marking documents as original. Specifically, an aqueous ink-jet ink can comprise an ink vehicle; and a sufficient amount of particulates having directionally dependent light reflective properties within the ink vehicle such that when the ink-jet ink is substantially dried on a desired substrate, a multi-colored reflected light is emittable in the presence of a light source. Printing documents as original can be carried out for compensation, as a service, or by providing cartridges containing these inks to clients and/or customers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.