Color photographic element containing ballasted triazole derivative and inhibitor releasing coupler
US6190848A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/156
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a color photographic element comprising: PA0 a) a first light sensitive silver halide emulsion layer containing a compound of Formula I: ##STR1## wherein Q represents the atoms necessary to form a triazole ring and the associated bonds, provided that the ring members may be substituted and that two of such members may join to form a fused ring; PA1 provided further that the ClogP for the compound of Formula I is from 4.75 to 9.0; and PA0 b) a second light sensitive silver halide emulsion layer, having a spectral sensitivity different from that of the first light sensitive silver halide emulsion layer, containing a compound of Formula II: EQU COUP-(TIME).sub.j -INH II wherein: PA1 1) COUP is a coupler parent group capable of forming a dye upon reaction with an oxidized developer; PA1 2) TIME is a timing group and j is 0 or 1; and PA1 3) INH is a mild silver development inhibitor fragment. The invention provides improved color reproduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.