Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1996-10-29
1997-10-14
Wright, Lee C.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430569, 430603, 430614, 430615, G03C 108
Patent
active
056771193
ABSTRACT:
This invention provides a silver halide photographic element comprising a silver halide emulsion in reactive association with a dithiolone 1-oxide compound represented by the following formula: ##STR1## wherein b is C(O), C(S), C(Se), CH.sub.2 or (CH.sub.2).sub.2, and R.sup.1 and R.sup.2 are independently H, or aliphatic, aromatic or heterocyclic groups, alkoxy groups, hydroxy groups, halogen atoms, aryloxy groups, alkylthio groups, arylthio groups, acyl groups, sulfonyl groups, acyloxy groups, carboxyl groups, cyano groups, sulfo groups, or amino groups, or R.sup.1 and R.sup.2 together represent the atoms necessary to form a five or six-membered ring or a multiple ring system. It further provides a method of making a silver halide emulsion containing a dithiolone 1-oxide compound.
REFERENCES:
patent: 4699873 (1987-10-01), Takahashi et al.
patent: 5003097 (1991-03-01), Beaucage et al.
patent: 5116723 (1992-05-01), Kajiwara et al.
patent: 5219721 (1993-06-01), Klaus et al.
OPPI Briefs, vol. 24, No. 4, pp. 488-492, (1992).
Eastman Kodak Company
Roberts Sarah Meeks
Wright Lee C.
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