Process for improving dried film resistivity of a chemically modified carbon black dispersion
US6203605A · kind A · utility
5Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1998 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Mar 20, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/324
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink jet ink composition comprises a liquid vehicle and a chemically modified pigment dispersion incorporating a chemical with a plurality of electron donating groups. The chemical is a monomer or a polymer. Dried ink film resistivity of aqueous carbon black pigment ink formulated in accordance with this composition is improved by being increased to a level whereby no electrical shorts which cause printer failure or print defects are observed during printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.