Water-based ink for ink-jet recording and ink container
US10611921B2 · kind B2 · utility
0Cited by
4References
16Claims
0Family size
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Key dates
| Filing date | Jan 29, 2018 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Jun 9, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There is provided a water-based ink for ink-jet recording including: water; a self-dispersible black pigment; and a resin-dispersed pigment of which hue angle is in a range of 180° to 270° and of which sedimentation velocity in the water-based ink is slower than sedimentation velocity of the self-dispersible black pigment in the water-based ink. A ratio (R/S) of a solid content weight (R) of the resin-dispersed pigment to a solid content weight (S) of the self-dispersible black pigment in the water-based ink is in a range of 0.26 to 0.80.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.