Water-dispersible direct thermal or inkjet printable media
US11376879B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Nov 20, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Dispersible record materials or media include a water-soluble or water-dispersible paper substrate, a printable layer carried by the substrate, and a base coat between the substrate and the printable layer. The printable layer may be a thermally responsive layer, e.g. containing a leuco dye and an acidic color developer, or an inkjet receptive layer. The binder material used in the base coat, and the base coat itself, are non-water-soluble, but nevertheless tailored in such a way that the record material as a whole is water-dispersible, i.e., it breaks apart under the influence of water with minimal agitation. The binder material of the base coat is preferably a non-resinous binder, a particulate binder, and/or a binder derived from a dispersion, such as latex. Use of such a binder material in a carefully selected concentration, with other elements, provides a base coat that allows for high quality images to be thermally printed at high print speeds on the thermally responsive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.