Infrared absorbing nickel-dithiolene dye complexes for dye-donor element used in laser-induced thermal dye transfer
US5036040A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1990 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Apr 20, 2010 |
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 comprising a polymeric binder, an image dye and an infrared-absorbing material which is different from the image dye in the dye layer, and wherein the infrared-absorbing material is a nickel-dithioene dye complex which is located coextensively with the image dye in the dye layer, the dye complex having the following formula: ##STR1## wherein: each R.sup.1 and R.sup.2 independently represents a substituted or unsubstituted alkyl group having from 1 to about 0 carbon atoms or one of R.sup.1 and R.sup.2, but not both simultaneously, represents a substituted or unsubstituted aryl or hetaryl group having from about 5 to about 10 atoms; or R.sup.1 and R.sup.2 may be combined together with the carbon atoms to which they are attached to form a 5- to 7-membered substituted or unsubstituted carbocyclic ring; each Z independently represents the atoms necesasry to complete a 6-membered substituted or unsubstituted benzene ring; and X.sup.+ is a monovalent cation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.