Color-developing agent, silver halide photographic light-sensiti

Details Color-developing agent, silver halide photographic light-sensiti Color-developing agent, silver halide photographic light-sensiti

1996-11-26

1998-05-26

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430224, 430380, 430435, 430440, 430446, 430467, 430483, G03C 142

Patent

active

057562750

ABSTRACT:
There is disclosed novel color-developing agents of the formula (I-1), (I-2), (1-3), or (1-4). There is also disclosed silver halide photographic light-sensitive materials and image-forming methods, using the color-developing agent. ##STR1## wherein R.sup.1 represents a halogen atom or an aliphatic group substituted with at least one halogen atom; R.sup.2 represents a substituent; L represents --CONR.sup.4 --, --COO--, --CO--, --SO.sub.2 NR--, --C(.dbd.NR.sup.4)NR.sup.5 --, or --C(.dbd.NR.sup.4)O--; R.sup.3, R.sup.4, and R.sup.5 each independently represent a hydrogen atom, an aliphatic, aryl, or hererocyclic group; in formula (I-1), n is 1 or 2, m is 0 or 1, and the sum of n and m is 1 or 2; in formulae (I-2) to (I-4), n is 1 to 3, m is 0 to 2, and the sum of n and m is 1 to 3. R.sup.1 and R.sup.2, R.sup.1 and R.sup.1, and R.sup.2 and R.sup.2, respectively, do not bond together to form any ring. R.sup.6 represents a hydrogen, a halogen, or an aliphatic, aryl, heterocyclic, aliphatic oxy, aryloxy, carbamoyl, aliphatic oxycarbonyl, aliphatic thio, or arylthio group.

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