Mixture of dyes for magenta dye donor for thermal color proofing
US5023229A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24802
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A magenta dye-donor element for thermal dye transfer comprises a support having thereon a dye layer comprising a mixture of a yellow dye and a magenta dye dispersed in a polymeric binder, the magenta dye having the formula: ##STR1## wherein: R.sup.1 is a substituted or unsubstituted alkyl or allyl group of from 1 to about 6 carbon atoms; PA0 X is an alkoxy group of from 1 to about 4 carbon atoms or represents the atoms which when taken together with R.sup.2 forms a 5- or 6-membered ring; PA0 R.sup.2 is any of the groups for R.sup.1 or represents the atoms which when taken together with X forms a 5- or 6-membered ring; PA0 R.sup.3 is a substituted or unsubstituted alkyl group of from 1 to about 6 carbon atoms, or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; PA0 J is CO, CO.sub.2, --SO.sub.2 -- or CONR.sup.5 --; PA0 R.sup.4 is a substituted or unsubstituted alkyl or allyl group of from 1 to about 6 carbon atoms, or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; and PA0 R.sup.5 is hydrogen, a substituted or unsubstituted alkyl group of from 1 to about 6 carbon atoms, or a substituted or unsubstituted aryl grou…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.