Pigmented ink composition
US7402614B2 · kind B2 · utility
7Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2002 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Nov 2, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/36
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Re-dispersible pigmented printing ink compositions, preferably for the continuous ink jet printing process are obtained by the addition of a flocculating agent to the pigment dispersion in the printing liquid. The compositions do not form hard sediments and are easy to re-disperse on stopping and resuming the printing operations. Suitable flocculating agents bind the pigment particles in the sediment into three-dimensional “airy” structures, which are easy to break up. The ink compositions of the invention are furthermore characterized by a good printability in the dispersed state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.