Aqueous magnetic ink character recognition ink-jet ink composition containing a combination of special surfactants
US6746527B1 · kind B1 · utility
9Cited by
8References
7Claims
0Family size
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Key dates
| Filing date | Mar 26, 2003 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Mar 26, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/322
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous ink-jet ink composition for MICR applications is provided comprising a metal oxide pre-dispersion combined with an aqueous ink-jet ink composition, wherein the metal oxide pre-dispersion contains metal oxide pigment or particles of a very small particle size, at least one surfactant to aid in the aid in the dispersion of the metal oxide particles. Particularly, the surfactant component is a combination of an anionic surfactant and an anionic-nonionic surfactant, or may be a combination of other types of surfactants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.