Silver halide element containing triazole inhibitors
US6007974A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Feb 6, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to a photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further containing an image modifying coupler which upon reaction with oxidized color developing agent during processing forms a dye, said image modifying coupler represented by the formula ##STR1## wherein COUP is a photographic coupler moiety; PA1 T.sup.1 is a timing or linking group; PA1 R.sup.1 and R.sup.2 are independently selected from a halide atom, or an aliphatic, carbocyclic, heterocyclic, carbamoyl, sulfamoyl, carbonamido, sulfonamido, acyl, sulfo, nitro, cyano, amino, alkoxy, alkoxyalkyl, aryloxy, aryloxyalkyl, thioalkoxy, thioalkoxyalkyl, thioaryloxy, or thioaryloxyalkyl group; and PA1 n is selected from 0, 1 or 2. More particularly this invention relates to a photographic element containing the above image modifying coupler wherein n is 0 and R.sup.1 and R.sup.2 are independently represented by the formula: EQU **--(Z).sub.m -(X).sub.t -R.sup.3 FNT ** point of attachment to triazole moiety wherein; PA1 Z is an aliphatic, carbocyclic, or heterocyclic group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.