Method of passivating a silver donor with a dye and photothermographic systems made thereby
US6576411B1 · kind B1 · utility
6Cited by
3References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Nov 21, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention is directed to a color photothermographic film in which particles comprising an organic silver salt is treated with a dye that functions as a passivating agent. In particular, the present invention involves passivating the organic silver salts with a dye that blocks the surface of the organic silver salt or ligand, resulting in a reduction of speed loss. The invention is also directed to a method of making a photothermographic element to improve raw stock keeping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.