Ink set for ink-jet recording, recording unit, ink-jet recording apparatus and ink-jet recording method
US7055943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2002 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Aug 9, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is an ink set including a plurality of inks each of which contains a water-insoluble coloring material and enabling ink-jet record images to be stably formed. The ink set includes first to nth aqueous inks for ink-jet recording, each of the aqueous inks containing a water-insoluble coloring material, an aqueous medium and a dispersant for dispersing the pigment in the aqueous medium, and a water-soluble organic compound, wherein the first to the nth aqueous inks are different from each other in pigment concentration based on the total weight of the each ink; and the first to the nth aqueous inks have the same or substantially the same viscosity at an actual usage temperature (T1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.