Ink set, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus
US7682433B2 · kind B2 · utility
22Cited by
58References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2008 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | May 7, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In an ink set having a plurality of inks, the ink set has at least a pigment ink and a dye ink. The pigment ink contains at least water, a surfactant, a self-dispersion pigment, and a poor medium for self-dispersion pigment and/or a salt; a dynamic surface tension of the pigment ink at a lifetime of 50 milliseconds is higher than 47 mN/m. The dye ink contains at least water, a surfactant and a dye. An ink set is provided which can obtain images having a high image density and a superior bleeding resistance without regard to the types of recording mediums.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.