Ink jet ink composition and ink jet printing method
US12305046B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Mar 28, 2023 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Jan 4, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/36
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink jet ink composition contains a metal pigment and at least one liquid medium selected from the group consisting of organic solvents and water. The metal pigment is surface-modified with a surface treatment agent. The metal pigment is in the form of scale-like particles and has a volume average particle size D50 of 1.0 μm or less. The ratio D50/Z of the volume average particle size D50 of the metal pigment to the average thickness Z of the metal pigment particles is 17 or more, and the ratio D50/L of the volume average particle size D50 to the nozzle diameter L of the ink jet head is 0.050 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.