Ink composition, manufacturing method of ink, ink set, and recording method
US7704311B2 · kind B2 · utility
6Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Nov 14, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink composition, which comprises at least two kinds of water-soluble dyes, wherein at least one of the at least two kinds of water-soluble dyes is a compound selected from the group consisting of a compound represented by formula (S-1), which is described in the specification, and a salt of the compound represented by formula (S-1) and at least one of the at least two kinds of water-soluble dyes is a compound represented by formula (L-1), which is described in the specification, or a compound having a naphthalene ring substituted with at least one hydroxyl group and three or more azo groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.