Ink for printing on low energy substrates
US8263683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2007 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Aug 14, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides an aqueous inkjet ink composition comprises a polymeric compound comprising discrete particles responsive to an external stimulus, and a functional material, wherein the functional material may be incorporated as part of the polymeric particles, the particles causing the composition to have a first rheological state and a different second rheological state in response to a stimulated change in conditions, the first rheological state being associated with a first lower viscosity of the composition, wherein the particles have a first lower volume, enabling the composition to pass through an inkjet printhead orifice and the second rheological state being associated with a second higher viscosity of the composition, wherein the particles have a second higher volume, enabling immobilisation of droplets of the composition on a substrate. The inkjet composition is particularly useful in a continuous inkjet printing system for printing onto a wide range of surfaces including impermeable surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.