Method and apparatus for processing photographic color materials
US4983504A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Feb 21, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/44
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for processing photographic silver halide color negative film and color negative paper each through its own color developing solutions wherein the paper color developing solution is replenished and the overflow from this replenished solution is used to replenish the film color developing solution and wherein (a) the color paper is based on substantially pure silver chloride emulsions and contains no more than 1% molar silver bromide based on total silver halide and (b) both color developing solutions and the replenisher are free from benzyl alcohol. Apparatus for carrying out the above-described method comprises a series of processing stations and means for advancing the photographic material being processed through the apparatus wherein there is provided means for collecting the overflow from the paper developer station and means for passing it directly or indirectly to the film processing station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.