Inkjet inks having cyan, yellow, magenta, and/or black colorants and methods of using the same to produce black and white images
US7005003B2 · kind B2 · utility
16Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Oct 15, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A gray inkjet ink having a black colorant and at least one cyan, magenta, or yellow colorant. By adjusting the amount of cyan, magenta, or yellow colorant in the inkjet ink, a gray inkjet ink having a neutral, warm, cool, or sepia tone is produced. At least one gray inkjet ink is used in a black ink set or an eight-color ink set to produce black and white images having high resolution. Methods of producing black and white images having desired gray tones are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.