Infrared absorbing bis(chalcogenopyrylo)polymethine dyes for dye-donor element used in laser-induced thermal dye transfer
US4948777A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Jun 16, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an infrared-absorbing material which is different from the dye in the dye layer, and wherein the infrared-absorbing material is a bis(chalcogenopyrylo)polymethine dye. In a preferred embodiment, the bis(chalcogenopyrylo)polymethine dye has the following formula: ##STR1## wherein: R.sup.1, R.sup.2 and R.sup.3 each independently represents hydrogen, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, sulfonyl, carbamoyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryl group; or any two of said R.sup.1, R.sup.2 and R.sup.3 groups may be joined together to form a 5- to 7-membered substituted or unsubstituted carboxyclic or heterocyclic ring; or R.sup.1 may be joined to Z.sup.1 to form a fused 5- or 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; or R.sup.3 may be joined to Z.sup.2 to form a fused 5- or 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; PA0 Y.sup.1 and Y.sup.2 each independently represents sulfur, oxygen, tellurium, or selenium, with the methi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.