Ink jet ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus
US8029612B2 · kind B2 · utility
16Cited by
23References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2009 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Jan 8, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/328
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides an ink jet ink, which gives a superior lightfastness to an ink image, has a superior sticking resistance and intermittent ejection stability, and gives a preferable color tone to the image. The ink includes an azo-based dye represented by formula (I) and a water-soluble organic solvent represented by bis(2-hydroxyethyl)sulfone represented by formula (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.