Method of photographic processing
US5466562A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1994 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Jul 15, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of processing an imagewise exposed photographic silver halide colour material by a redox amplification method in which the colour material is treated with a colour developing agent in the presence of an oxidant in which a processor is used which comprises means for applying a relatively small volume of processing solution to an imagewise exposed silver halide material and in which the relatively small volume of solution is supplied from a reservoir of relatively large volume and, while processing, the processing solution being used is isolatable from said reservoir and, wherein either a colour developer solution without oxidant or an oxidant solution without colour developing agent is held in the reservoir and wherein the additional oxidant (or colour developing agent) respectively needed for amplification is introduced into the processing solution while it is isolated from said reservoir and wherein the used developer/amplifier so-formed is discarded into said reservoir after use where any unused introduced oxidant (or colour developing agent) is destroyed by a compound present in the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.