Photothermographic toners
US4585734A · kind A · utility
12Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1985 |
| Grant date | Apr 29, 1986 |
| Priority date | — |
| Expiry date | Feb 1, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/166
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Certain effective toning systems for silver halide/silver salt/reducing agent photothermographic imaging materials tend to bleach the final image. The presently disclosed toning system of phthalazine and an active-hydrogen containing heterocyclic compound is more stable than some previous toners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.