Lightfast ink jet inks
US6641257B1 · kind B1 · utility
13Cited by
13References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jan 28, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink with improved lightfastness suitable for thermal ink jet printing contains at least an aqueous vehicle, a dye and a light stabilizer to protect the dye in the ink during exposure to light. Different additives as light stabilizer for individual inks were described herein. A UV Glossy substrate was found to reinforce the lightfastness of print.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.