Dye-donor element with transferable protection overcoat
US6346502B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2000 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Apr 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/254
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dye-donor element for thermal dye transfer comprising a support having thereon at least one dye layer area comprising an image dye in a binder and another area comprising a transferable protection layer, the transferable protection layer area being approximately equal in size to the dye layer area, wherein the transferable protection layer contains inorganic particles, a polymeric binder and unexpanded synthetic thermoplastic polymeric microspheres, the microspheres having a particle size in the unexpanded condition of from about 5 to about 20 &mgr;m, and which expand to about 20 to about 120 &mgr;m upon application of heat during transfer of the protection layer to an image-receiving layer to provide a matte surface thereon, the transferable protection layer being less than about 1 &mgr;m thick.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.