Ink set, ink jet recording method, ink cartridge, recording unit, ink-jet recording apparatus, and image formation method
US7753515B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2005 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Mar 5, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In an ink set, which is an ink set (A) obtained by combining a plurality of aqueous inks (a) and used together with an aqueous ink (B) containing a water-insoluble coloring material, respective aqueous inks constituting the ink set (A) contain at least one water-soluble organic solvent serving as a poor solvent for the water-insoluble coloring material contained in the aqueous ink (B), and among the water-soluble organic solvents which are respectively contained in the aqueous ink (a) and serve as a poor solvent, at least one water-soluble organic solvent has a vapor pressure at 20° C. that is lower than the vapor pressure of water at 20° C. The ink set can form a full-color image in which occurrence of bleeding at boundaries between different adjacent color regions of the image has been suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.