Printing ink jet ink composition and recording method
US12215241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2023 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Apr 25, 2043 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P5/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing ink jet ink composition of the present disclosure is an ink composition which includes an acidic dye; a water-soluble organic solvent; a lactam compound; and water, the acidic dye includes at least one selected from the group consisting of C.I. Acid Black 172 and C.I. Acid Black 52:1, a content of the acidic dye with respect to a total mass of the ink composition is 10 percent by mass or more, the water-soluble organic solvent includes a glycol ether compound having a standard boiling point of 195° C. to 290° C., the lactam compound includes at least one selected from the group consisting of 1-(2-hydroxyethyl)-2-pyrrolidone and ε-caprolactam, and a mass ratio of the lactam compound to the glycol ether compound is 3.5 to 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.