Patent ID: 6054259
Filing Date: 2000-04-25
Classification: G03C

Abstract:
A silver halide photographic material which comprises at least one methine compound represented by the following formula (I) or (II): ##STR26## wherein Z.sub.1, Z.sub.2 and Z.sub.3 each represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; R.sub.1 and R.sub.3 each represents an alkyl group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, L.sub.7, L.sub.8 and L.sub.9 each represents a methine group; p.sub.1 and p.sub.2 each represents 0 or 1; n.sub.1 and n.sub.2 each represents 0, 1, 2, 3 or 4; M.sub.1 represents a counter ion to balance a charge; and m.sub.1 represents a number of 0 or more necessary to neutralize a charge in the molecule; ##STR27## wherein Z.sub.4, Z.sub.5 and Z.sub.6 each represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; R.sub.4 represents an alkyl group; R.sub.5 and R.sub.6 each represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; L.sub.10, L.sub.11, L.sub.12, L.sub.13, L.sub.14 and L.sub.15 each represents a methine group; p.sub.3 represents 0 or 1; n.sub.3 and n.sub.4 each represents 0, 1, 2, 3 or 4; M.sub.2 represents a counter ion to balance a charge; and m.sub.2 represents a number of 0 or more necessary to neutralize a charge in the molecule;wherein in formula (I), at least one of R.sub.1, R.sub.2, R.sub.3, Z.sub.1, Z.sub.2 and Z.sub.3 has a thioether group, and in formula (II), at least one of R.sub.4, R.sub.5, R.sub.6, Z.sub.4, Z.sub.5 and Z.sub.6 has a thioether group; andwherein the thioether group is represented by the following formula (X):--(A.sub.1).sub.k2 --S--Q.sub.1 (X)wherein A.sub.1 represents an alkylene group, an alkenylene group, alkynylene group, an arylene group or a divalent heterocyclic group; k.sub.2 represents 0 or 1; and Q.sub.1 represents an alkyl group, an aryl group or a heterocyclic group.