Black ink composition excellent in black
US5439517A · kind A · utility
21Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1993 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Nov 9, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/328
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink composition excellent in blackness and storage stability is disclosed which comprises a first dye represented by the following general formula (I) and a second dye selected from the group consisting of C.I. Direct Yellow 86, 132 and 144 and compounds represented by the following general formulae (II) and (III): ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.