Assemblage for thermal dye transfer
US5928990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal dye transfer assemblage comprising: PA1 (I) a dye-donor element comprising a support having thereon sequentially repeating dye layer patches of a dye dispersed in a polymeric binder, at least one of the dye patches containing a deprotonated cationic dye which is capable of being reprotonated to a cationic dye having a N-H group which is part of a conjugated system; and PA1 (II) a dye-receiving element comprising a support having thereon a polymeric dye image-receiving layer comprising a polyester polymer which itself does not significantly reprotonate deprotonated cationic dyes which may be transferred from the dye-donor element, to which has been added a hydrated transition metal or metalloid salt of a strong acid; the dye-receiving element being in a superposed relationship with the dye-donor element so that the dye layer is in contact with the polymeric dye image-receiving layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.