Water base pigment ink for ink-jet recording, ink cartridge accommodating the same, and ink-jet recording method
US7357832B2 · kind B2 · utility
1Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2005 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Jan 6, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/322
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A water base pigment ink for ink-jet recording contains a pigment, a propylene glycol derivative which has a saturation vapor pressure of 2 to 10 hPa and an octanol-water distribution coefficient log P of 0 to 1.35, and dipropylene glycol-n-propyl ether. The propylene glycol derivative is contained in the ink by 0.25 to 1.5% by weight, and the dipropylene glycol-n-propyl ether is contained in the ink by 0.5 to 1% by weight. The ink is excellent in the paper surface drying performance. Further, it is possible to avoid the occurrence of the feathering and the blank stripes in letters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.