Ink, ink storage and recording device
US6406139B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
It is an exemplified object of the present invention to provide such ink that maintains dispersive and preservative stabilities suitable for inkjet ink, an ink storage storing the ink, and a recording device using the ink. The ink of the present invention is aqueous dispersoid ink comprising at least water, a water-soluble organic solvent and a colorant, and the composition thereof is as follows. A ratio R of Kt to Ko (=Kt/Ko) satisfies R≦5, where Ko (=Dm/Do) is a ratio of a maximum particle diameter Dm to an average particle diameter Do in said ink, both of which diameters are measured by detecting backscattering light and converting the detection result into a particle diameter under a dynamic light scattering method as a measurement principle. Kt (=Tm/To) is a ratio of a maximum particle diameter Tm to an average particle diameter To in the ink that has been preserved for six months at a constant temperature of 50° C., both of which diameters are measured by the principle and detection method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.