Method of processing originating photographic elements containing tabular silver chloride grains bounded by (100) faces
US5491050A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1994 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Feb 9, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/164
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of processing an exposed originating silver halide color photographic element comprising developing the photographic element in a color devoloper containing a p-phenylenediamine color developing agent in the presence of a 1-phenyl pyrazolidin-3-one compound PA1 wherein the originating silver halide photographic element comprises a radiation sensitive emulsion in reactive association with a development inhibitor releasing compound and containing a silver halide grain population comprised of grains comprising at least 50 mole percent silver chloride, based on total silver forming the grain population projected area, wherein at least 50 percent of total grain projected area is accounted for by intrinsically stable silver halide tabular grains PA1 (1) bounded by {100} major faces having adjacent edge ratios of less than 10 and PA1 (2) each having an average aspect ratio of at least 2, and wherein the silver halide content of the photographic element comprises at least 50 mole % silver chloride and no more than 2 mole % silver iodide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.