Method of processing a silver halide color photographic material and a color developer where the developer contains a hydrazine compound
US5064751A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1991 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Jan 23, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/413
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for processing a silver halide color photographic material including the step of developing the silver halide color photographic material with a color developing solution containing at least one aromatic primary amine developing agent and at least one hydrazide represented by the following formula (I) or (II) EQU R.sup.1 --X.sup.1 --NHNH--R.sup.2 (I) in which PA1 X.sup.1 represents --CO--, --SO.sub.2 -- or ##STR1## R.sup.1 represents a hydroxyl group, a hydroxyamino group, carbamoyl group, a hydrazinocarbonyl group, an amino group, or a hydrazino group; and R.sup.2 represents a hydrogen atom, an alkyl group, or an aryl group; provided that the R.sup.1 or R.sup.2 groups of at least two of the hydrazide groups may be linked to form a dimer or higher polymer of the hydrazide. EQU R.sup.3 --X.sup.2 --NHNH--R.sup.4 (II) in which PA1 X.sup.2 represents --CO-- or --SO.sub.2 --; R.sup.3 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, or an aryloxy group; and R.sup.4 represents a hydrogen atom, an alkyl group or an aryl group; provided that the R.sup.3 or R.sup.4 groups of at least two of the hydrazide groups may be linked to form a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.