High contrast photographic element and emulsion and process for their use
US5104769A · kind A · utility
10Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1988 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Mar 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic elements and emulsions are described which are capable of providing high contrast images. The elements and emulsions comprise negative working silver halide and contrast enhancing arylhydrazide nucleating agents. A process for utilization of the elements and emulsions is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.