Ink composition, inkjet recording method and recorded matter
US7276111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2005 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Jan 5, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide an ink composition that can improve the preservation characteristics (gas fastness) of an image produced by an ink composition which uses phthalocyanine group cyan dye. The present invention provides an ink composition wherein at least water, the phthalocyanine group cyan dye indicated by the general formula (I), and an aromatic compound having a sulfone group and/or the salt thereof represented by the general formulae (a) and/or (b) are contained; and an ink composition wherein at least water, the phthalocyanine group cyan dye indicated by the general formula (VIII), and an aromatic compound having a sulfone group and/or the salt thereof represented by the general formulae (a) and/or (b) are contained. Moreover, the present invention provides an inkjet recording method in which recording is conducted by discharging ink droplets of an ink composition and causing the ink droplets to adhere to a recording medium, wherein as said ink composition, the aforementioned ink composition is used. Further, the present invention provides a record which is obtained by using the aforementioned ink composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.