Ink composition
US8841356B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Sep 30, 2010 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Nov 24, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24802
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is an ink composition which has superior storage stability, is resistant to bleeding, has good fixability to paper, and enables printing of a clear image. The ink composition includes a pigment dispersion containing a surface-treated pigment and a resin emulsion, wherein the surface-treated pigment is obtained by binding a functional group, having a larger calcium index than a calcium index of 1,2,3-benzenetricarboxylic acid, to the surface of a pigment; and the resin emulsion is adapted so that an aqueous solution containing 1 mass % of a solid content of the resin emulsion has a conductance of 300 μS/cm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.