Ink, and ink-jet recording method and apparatus employing the ink
US5082496A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1991 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Feb 6, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B31/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink including a recording agent and a liquid medium for dissolution or dispersion thereof, the recording agent being a compound represented by the general formula ##STR1## wherein R.sup.1 and R.sup.2 are respectively a radical selected from the group of lower alkyl, lower alkoxy, --NHCOCH.sub.3, --COOM, and --SO.sub.3 M; R.sup.3, R.sup.4, and R.sup.5 are respectively a radical selected from the group of hydrogen, hydroxyl, lower alkyl, lower alkoxy, amino, --SO.sub.3 M, and --COOM; A is ##STR2## R.sup.6 and R.sup.7 are respectively a radical selected from the group of hydrogen, hydroxyl, and lower alkoxy; m is 1 or 2; n is 0 or 1; and M is alkali metal or ammonium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.