Neutral-black dye-donor element for thermal dye transfer
US4753922A · kind A · utility
18Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Nov 20, 1987 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Nov 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A neutral-black dye-donor element for thermal dye transfer comprises a support having thereon a dye dispersed in a polymeric binder, the dye comprising a 1-((4-phenylazo)phenylazo)-8-amino-2-naphthol, such as one having the formula: ##STR1## wherein: each R.sup.1 is independently a substituted or unsubstituted alkyl group of from 1 to about 6 carbon atoms, a substituted or unsubstituted aryl group of from about 5 to about 10 carbon atoms, or two R.sup.1 groups may be joined together with the N atom to which they are attached to form a 5- or 6-membered heterocyclic ring; and PA0 R.sup.2 is hydrogen or R.sup.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.