Magenta ink for ink-jet recording
US7727321B2 · kind B2 · utility
12Cited by
16References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2007 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Dec 1, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/328
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A magenta ink for ink-jet recording contains a coloring agent, water and a water soluble organic solvent. Different types of dyes are employed as the coloring agent. In particular, a dye (1) represented by the general formula (1) is used together with at least one dye selected from the group consisting of a dye (2) represented by the general formula (2) in a free acid form, C. I. Acid Red 289 and C. I. Acid Red 52.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.