Ink jet ink and ink jet recording method
US8651651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2012 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Apr 13, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/322
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In an ink jet ink containing a pigment, a binder resin, water, an organic solvent, and a surfactant, the surface tension of the ink is in a region defined by γ0−γx≧1.0 (γ0: surface tension before evaporation, γx: surface tension at an evaporation rate X %) when the evaporation rate X of the ink is in a range of 0<X(%)≦20; the ink jet ink contains two or more organic solvents; and the content of an organic solvent of which the sum ΣSP of the hydrogen bonding term and the polarity term of the solubility parameter is 8 to 18 MPa1/2 is 30 mass % or more and less than 95 mass % of the total amount of the organic solvents; and the content of the surfactant is less than the critical micelle concentration of the surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.