Photothermographic material, composition and process
US4105451A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1976 |
| Grant date | Aug 8, 1978 |
| Priority date | — |
| Expiry date | Dec 22, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/498
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved photothermographic material can be prepared by sequentially mixing the following components: (1) a dispersion comprising a 2-mercaptobenzothiazole, 2-mercaptobenzimidazole, 2-mercaptobenzoxazole or 2-mercaptobenzoselenazole compound and a silver salt of certain heterocyclic thiones with (2) a reducing agent solution, (3) a binder, and (4) a silver halide photosensitive composition containing a spectral sensitizing dye, such as a symmetrical or unsymmetrical thiosulfato substituted benzimidazolocarbocyanine dye. A photothermographic material containing the described components can provide a developed image after imagewise exposure by merely heating the material to moderately elevated temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.