Silver halide photographic material containing dye
AssigneeFuji Photo Film Co., Ltd.
InventorsKoji Wariishi, Keisuke Matsumoto, Keiichi Suzuki
Life of this patent
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Abstract
A silver halide photographic material comprises at least one silver halide emulsion layer and at least one non-light-sensitive hydrophilic colloidal layer provided on a support. The silver halide emulsion layer or the hydrophilic colloidal layer contains a new dye represented by the formula (I): ##STR1## in which L is a single bond, a divalent aliphatic group, a divalent aromatic group or a combination thereof; A is an acidic nucleus; each of R.sup.1, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently is hydrogen or a substituent group; R.sup.2 is a substituent group; m is an integer of 0 to 4; n is 0 or 1; and X is an electron attractive group having a Hammett's substituent constant (.sigma..sub.m) of 0.3 to 1.5.
Claims17
A silver halide photographic material comprising at least one silver halide emulsion layer and at least one non-light-sensitive hydrophilic colloidal layer provided on a support, wherein the silver halide emulsion layer or the hydrophilic colloidal layer contains a dye represented by the formula (I):
- ##STR25## in which L is a single bond, a divalent aliphatic group, a divalent aromatic group or a combination thereof;
- A is a five- or six-membered nitrogen containing heterocyclic ring;
- R.sup.1 is hydrogen, an aliphatic group, an aromatic group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxy group, an aryloxy group, an acyloxy group, a sulfonyloxy group, a carbamoyloxy group, a carbamoyl group, a halogen atom, hydroxyl or carboxyl;
- R.sup.2 is an aliphatic group, an aromatic group, an acyl group, a sulfonyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxy group, an aryloxy group, an acyloxy group, a sulfonyloxy group, a carbamoyloxy group, amino, a substituted amino group, a heterocyclic group, an amido group, a carbamoyl group, a sulfonamido group, a halogen atom, hydroxyl, nitro, cyano or carboxyl;
- R.sup.3 is hydrogen, an aliphatic group, an aromatic group or a halogen atom;
- each of R.sup.4, R.sup.5 and R.sup.6 independently is hydrogen, an alkyl group, cyano or a halogen atom;
- m is an integer of 0 to 4;
- when m is 2, 3 or 4, the groups represented by R.sup.2 may be different from each other;
- n is 0 or 1;
- and X is an electron attractive group having a Hammett's substituent constant (.sigma..sup.m) of 0.3 to 1.5.
Dependencies are inferred from the claim text.