Waterfast dye fixative compositions for ink jet recording sheets
US7745525B2 · kind B2 · utility
18Cited by
55References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2008 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Aug 15, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31692
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A coating composition comprising a blend of at least two dye fixatives, at least one of which is a cationic polymer, and at least one of the other dye fixatives is a polyvalent metal salt, to form a water-insoluble complex. The ink recording sheets comprise a composition that is absorbed into the surface of the substrate as a sizing material, or alternatively, forms a continuous layer on the substrate. The present invention also encompasses methods for making the ink jet recording sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.