Patent ID: 6194133
Filing Date: 2001-02-27
Classification: G03C

Abstract:
A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein said emulsion contains a compound represented by the following formula (I) or (II):[ML.sub.X L.sup.I.sub.(4-x) ].sup.n (I)wherein M represents a metal or a metal ion; L represents a compound of the following formula (III) which is bonded to M; x represents 1, 2, 3 or 4; n represents an integer of from -6 to +5; and L.sup.I represents a chemical species bonded to M, and L.sup.I.sub.(4-x) may be the same or different chemical species when x is 1 or 2; ##STR6##wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent a hydrogen atom, an alkyl group, an alkenyl group, an alkinyl group, an aralkyl group, a cycloalkyl group, an aryl group, a halogen atom, a cyano group, a nitro group, a mercapto group, a hydroxy group, an alkoxy group, an arloxy group, an alkylthio group, an arylthio group, an acyloxy group, a sulfonyloxy group, an amino group, an ammonio group, a carbonamido group, a sulfonamido group, an oxycarbonylamino group, an oxysulfonylamino group, an ureido group, a thioureido group, an acyl group, an oxycarbonyl group, a carbamoyl group, a thiocarbonyl group, a thiocarbamoyl group, a sulfonyl group, a sulfinyl group, an oxysulfonyl group, a sulfamoyl group, a sulfino group, a sulfano group, a carboxyl or carboxylate group, a sulfonic acid or sulfonate group, or a phosphonic acid or phosphonate group, and R.sub.2 and R.sub.3 may be subjected to ring closure to form a saturated carbon ring, an aromatic hydrocarbon ring or a heterocyclic aromatic ring;[MX.sub.n L.sub.(6-n) ].sup.m (II)wherein M represents a metal ion, L represents a compound of the foregoing formula (III), X represents a halogen ion, n represents 3, 4 or 5, and m represents -5, -4, -3, -2, -1, 0, +1 or +2.