Black ink for inkjet recording and inkjet recording method
US7303272B2 · kind B2 · utility
16Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2003 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Nov 16, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/328
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A black ink for inkjet recording having an aqueous medium containing a dye in which λmax of the absorption spectrum in an aqueous solution is in the region from 500 and 700 nm and the half-value width in the absorption spectrum of a dilute solution standardized to an absorbance of 1.0 is 100 nm or more. An object of the present invention is to provide an inkjet recording ink ensuring excellent discharge stability even after aging of the ink and also exhibiting excellent weather resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.