Silver halide photographic material
US5204214A · kind A · utility
8Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Jul 17, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide photographic material which provides a negative image is disclosed. The photographic material contains a compound represented by formula (I): ##STR1## wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; and Z represents an atomic group necessary to form a nitrogen-containing heterocyclic aromatic group, and provides a negative image having high contract, high sensitivity, an satisfactory dot image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.