Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1998-03-18
2000-04-25
Baxter, Janet
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430579, 430592, G03C 110, G03C 126
Patent
active
060542594
ABSTRACT:
A silver halide photographic material which contains at least one methine compound represented by the following formula (I) or (II): 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 for to neutralize a charge in the molecule; provided that at least one of R.sub.1, R.sub.2, R.sub.3, Z.sub.1, Z.sub.2, Z.sub.3, 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 has a thioether group; ##STR1## 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 for to neutralize a charge in the molecule; provided that at least one of R.sub.4, R.sub.5, R.sub.6, Z.sub.4, Z.sub.5, Z.sub.6, L.sub.10, L.sub.11, L.sub.12, L.sub.13, L.sub.14 and L.sub.15 has a thioether group.
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Baxter Janet
Fuji Photo Film Co. , Ltd.
Walke Amanda C.
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