Dye-forming coupler, silver halide photographic light-sensitive material and azomethine dye compound
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United States of America Patent
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Apr 27, 2004
Grant Date -
Apr 17, 2003
app pub date -
Mar 27, 2002
filing date -
Mar 29, 2001
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Abstract
A dye-forming coupler of formula (I), a silver halide photographic light-sensitive material containing the coupler, and an azomethine dye that can be derived from the dye-forming coupler: ##STR1## wherein Q is a group --C(--R.sub.11).dbd.C(--R.sub.12)--SO.sub.2 --; R.sub.11 and R.sub.12 bond with each other to form, together with the --C.dbd.C-- moiety, a 5- to 7-membered ring, or they each represent a hydrogen atom or a substituent; R1, R3 and R4 each represent a substituent; m is an integer of 0 to 4; and X represents a hydrogen atom or a group that splits off upon a coupling reaction with an oxidized product of a developing agent; with the proviso that the following compound (I-A) is excluded from the dye-forming coupler of formula (I). ##STR2##
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