Silver halide photographic emulsions and image forming process
US4224401A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1978 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Dec 7, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A negative image silver halide photographic emulsion comprising substantially surface latent image type monodispersed silver bromide or silver iodobromide grains containing up to about 10 mol% silver iodide, wherein the average grain size of the silver halide grains is about 0.7 micron or less, with the silver halide photographic emulsion containing a binder in an amount of about 250 g or less per mol of silver halide and a compound represented by the following general formula (I): EQU R.sup.1 NHNHCOR.sup.2 (I) wherein R.sup.1 represents an aryl group and R.sup.2 represents a hydrogen atom, a phenyl group or a straight or branched chain alkyl group having 1 to 3 carbon atoms; a silver halide photographic light-sensitive element comprising a support having thereon at least one layer of a negative image silver halide photographic emulsion comprising substantially surface latent image type monodispersed silver bromide or silver iodobromide grains containing up to about 10 mol% silver iodide, wherein the average grain size of the silver halide grains is about 0.7 micron or less, with the silver halide photographic emulsion containing a binder in an amount of about 250 g or less per mol…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.