Bleed alleviation between two inks
US6086198A · kind A · utility
20Cited by
14References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1996 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Feb 1, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Certain colorants which include both dye and pigment based inks are used which become insoluble under specific and well-defined conditions and additives. By reacting a quaternized or neutralized amine dispersant in a pigment-containing ink with an anion in a second ink that quantitatively combines with the dispersant, the pigment dispersion is destabilized, resulting in inhibition of the migration of pigment on the print medium, thereby helping to reduce bleed between black ink and color inks and between different color inks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.