Photothermographic material comprising an infra-red sensitizer
US6074814A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1997 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Jul 8, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A photothermographic recording material comprising a photo-addressable thermally developable element including a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt, in a quantity of 0.1 to 35 mol % relative to the organic silver salt and spectrally sensitized to infra-red light with a dye, a supersensitizer for the dye, a reducing agent in thermal working relationship with the substantially light-insensitive organic silver salt and a binder, wherein the binder comprises a water soluble polymer, a water-dispersible polymer or a water soluble polymer and a water-dispersible polymer and the dye is represented by formula (I): ##STR1## wherein Z.sup.1 and Z.sup.2 independently represent S, O or Se; R.sup.1 and R.sup.17 are independently each an alkyl or sulfo-alkyl group which may be substituted with at least one fluorine, chlorine, bromine, iodine or an alkoxy-, aryloxy- or ester-group; and X represents an anion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.