Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1981-02-09
1982-05-04
Downey, Mary F.
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430265, 430445, 430446, 430949, 430267, 430611, G03C 106
Patent
active
043283020
ABSTRACT:
A lithographic silver halide photographic light-sensitive material is described which scarcely exhibits colored fringe and black pepper, forms halftone dots of good quality whether a fresh or an exhausted developer is used for processing thereof, and which scarcely shows a drop in sensitivity even when a developer contaminated by a fixing solution is used; said material comprises a support and at least one lithographic silver halide emulsion layer, and containing in said emulsion layer or in another hydrophilic colliodal layer which does not contain silver halide emulsion at least one compound represented by formula (I) ##STR1## wherein M represents hydrogen, an alkali metal ion or --NH.sub.4.sup..sym. ; X represents --SO.sub.2 NHR', --COOM', --SO.sub.3 M', --OH or --CONH.sub.2, wherein M' represents hydrogen, an alkali metal ion or --NH.sub.4.sup..sym. ; and R' represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; R represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; and n represents 1 or 2.
REFERENCES:
patent: 3266897 (1966-08-01), Kennard et al.
patent: 3397987 (1968-08-01), Luckey et al.
patent: 3708803 (1973-01-01), Salesin
patent: 4169733 (1979-10-01), Iytaka et al.
Fuseya Yoshiharu
Kasama Yasuo
Mifune Hiroyuki
Nishimura Tatsuo
Shishido Tadao
Downey Mary F.
Fuji Photo Film Co. , Ltd.
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