Photographic element, compound, and process
US6207363A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Dec 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/346
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a cyan "NB coupler" having the formula (I): ##STR1## wherein: PA1 the term "NB coupler" represents a coupler of formula (I) that forms a dye for which the left bandwidth (LBW) using spin-coating is at least 5 nm less than that of the same dye in solution form; PA1 Y is H or a coupling-off group; PA1 each Z" and Z* is an independently selected substituent group where n is 1 to 4 and p is 0 to 2; PA1 W.sup.2 represents the atoms necessary to complete a carbocyclic or heterocyclic ring group; and PA1 V is a sulfone or sulfoxide containing group; PA1 provided that the combined sum of the aliphatic carbon atoms in V, all Z" and all Z* is at least 8; PA1 provided further that there is one and only one Z" substituent ortho to the carbonamido group linking the W.sup.2 ring to the rest of the coupler; and PA1 provided still further that when W.sup.2 forms a carbocyclic aromatic ring, at least one Z" is selected from the group consisting of alkyl, alkoxy, hydroxy, aryl, aryloxy, oxycarbonyl, oxysulfonyl, sulfoxide, sulfamoyl, thio, carbamoyl, carboxy, carbonamido, ureido,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.