Color development processing method of silver halide color photographic material using a color developer where the color developing agent concentration and processing temperature are a function of bromide ion concentration
US5344750A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | May 11, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/164
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color development process for processing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer comprising a color coupler and a silver iodobromide emulsion containing silver iodide in an amount of from 2 to 20 mol %, comprising the step of processing the color photographic material in a color developing solution containing a color developing agent and bromide ion for 40 seconds to 90 seconds, wherein the color developing agent is represented by formula (D'): ##STR1## wherein R.sub.1d, and R.sub.2d, each represents an alkyl group having 1 to 4 carbon atoms; and L.sub.1 represents a straight-chain or branched alkylene group having 3 or 4 carbon atoms, the concentration {Br.sup.- } of bromide ion in the color developing solution is from 30 to 60 mmol/l, the relationship between the concentration {R} of the color developing agent in the color developing solution and the concentration {Br.sup.- } of bromide ion in the color developing solution and the relationship between the development processing temperature Tem and the concentration {Br.sup.- } of bromide ion are maintained to sat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.