Photographic element, compound, and process

摘要

Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a "NB coupler" having the formula (I):
<Chemistry id="chema01" num="0001"><Image id="ia01" he="45" wi="104" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" /></Chemistry> wherein :
<UnorderedLists id="ula01" listStyle="none" compact="compact"><ListItem>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 5nm less than that of the same dye in solution form;</ListItem><ListItem>Y is H or a coupling-off group;</ListItem><ListItem>each Z* is an independently selected substituent group where p is 0 to 2;</ListItem><ListItem>V is a substituent group containing a sulfonamido group;</ListItem><ListItem>R<Sub>4</Sub> is hydrogen or a group bonded to the carbonamido group by an aliphatic carbon atom;</ListItem><ListItem>provided that the combined sum of the aliphatic carbon atoms in V, R<Sub>4</Sub> and all Z* is at least 8. The element provides a dye of improved hue.</ListItem></UnorderedLists>