Thermal dye transfer system with polyester ionomer receiver
US5804531A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Sep 8, 1998 |
| 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 (a) a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, the dye being: PA2 I) an electrically neutral, deprotonated, delocalized cationic dye precursor; PA2 II) a pendant basic dye of the formula D-(L-E).sub.m wherein D represents the residue of a dye, L represents a covalent linking group, E represents a moiety with basic properties and m is an integer of 1-3; or PA2 III) a cationic dye precursor having the following structure: ##STR1## (b) a dye-receiving element comprising a support having thereon a polymeric dye image-receiving layer, the dye-receiving element being in a superposed relationship with the dye-donor element so that the dye layer is in contact with the dye image-receiving layer, the dye image-receiving layer comprising a polyester ionomer comprising a polyester backbone containing units of a salt of a sulfonic acid or sulfonimide and a basic nitrogen-containing compound which has a pKa of its conjugate acid in the range from about 6 to about 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.