Inkjet recording ink and ink cartridge
US8770735B2 · kind B2 · utility
1Cited by
16References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2010 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Mar 31, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/324
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An inkjet recording ink including a pigment dispersion liquid containing at least a first carbon black and a dispersant, a second carbon black, a penetrant, a wetting agent and water, wherein the first carbon black has an average particle diameter D50 of 70 nm to 180 nm as measured by a dynamic light scattering method and has a particle diameter standard deviation equal to or smaller than ½ of the average particle diameter, wherein the dispersant is a condensate of naphthalene sulfonic acid and formalin, wherein the second carbon black is carbon black coated with a resin, and wherein the penetrant is a 2-ethyl-1,3-hexandiol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.