Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1990-02-05
1991-07-30
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430567, 430600, G03C 1035, G03C 1485
Patent
active
050359932
ABSTRACT:
A silver halide photographic material, which comprises a support having provided thereon at least one light-sensitive silver halide emulsion layer, the silver halide emulsion layer or at least one other hydrophilic colloid layer of the material containing at least one heterocyclic quaternary ammonium salt compound represented by the following general formula (I): ##STR1## wherein Z represents non-metallic atoms necessary for forming a 5- or 6-membered heterocyclic ring which may be substituted with a substituted group; R.sup.1 represents an aliphatic group; R.sup.2 represents a hydrogen atom, an aliphatic group, or an aromatic group; Y represents a charge-balancing counter ion; and n is 0 or 1; provided that at least one of R.sup.1, R.sup.2, and Z has an acyl group, a hydrazine group, or a hydrazone group, or R.sup.1 and R.sup.2 form a 6-membered dihydropyridinium skeleton, and at least one of R.sup.1, R.sup.2, and Z includes the group -X-L-.sub.m wherein X represents a group that enhances adsorption to silver halide, L represents a divalent linkage group, and m is 0 or 1.
REFERENCES:
patent: 3730723 (1973-05-01), Gilman et al.
patent: 3734738 (1973-05-01), Kurtz et al.
patent: 3759901 (1973-09-01), Lincoln et al.
patent: 4115122 (1978-09-01), Adachi et al.
patent: 4471044 (1984-09-01), Parton et al.
Hirano Shigeo
Murai Ashita
Suzuki Seiji
Bowers Jr. Charles L.
Buscher Mark R.
Fuji Photo Film Co. , Ltd.
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