Silver halide photographic material

Details Silver halide photographic material Silver halide photographic material

1993-06-29

1994-05-31

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430598, G03C 106

Patent

active

053168909

ABSTRACT:
A silver halide light-sensitive material containing a compound selected from compounds represented by formula (I) or (II): ##STR1## wherein L.sup.1 represents --O--, --S--, --SO--, --SO.sub.2 --, --N(R.sup.4)--, --CONR.sup.4 --, --NR.sup.4 CO--, --OCONR.sup.4 --, --NR.sup.4 CONR.sup.4 --, --SO.sub.2 NR.sup.4 --, --NR.sup.4 SO.sub.2 -- or --NR.sup.4 SO.sub.2 NR.sup.4 --, each of which is bonded to the pyridine ring at the right hand side thereof; L.sup.2, L.sup.3, and L.sup.4 each represent a divalent aliphatic group or a divalent aromatic group; G represents --CO--, --SO.sub.2 --, --SO--, --COCO--, a thiocarbonyl group, an iminomethylene group or --P(O)(G.sup.1 R.sup.4)--; G.sup.1 represents a single bond, --O-- or --NR.sup.4 --; R.sup.1 represents an aliphatic group or an aromatic group; R.sup.2 represents a monovalent substituent; n.sup.1 represents 0 or an integer of from 1 to 4; R.sup.3 represents a hydrogen atom, an aliphatic group, an aromatic group, an alkoxy group, an aryloxy group or an amino group; R.sup.4 represents a hydrogen atom, an aliphatic group or an aromatic group; R.sup.5 represents a monovalent group; m represents 0 or an integer of from 1 to 4; n.sup.2 represents 0 or an integer of from 1 to 5; and X.sup.- represents a counter anion or a counter anion moiety in an intramolecular salt; two or more R.sup.2 's, R.sup.4 's or R.sup.5 's, if any, may be the same or different.
The light-sensitive material exhibits high processing stability even in rapid processing and provides a high contrast image even when developed with a developing solution at a low pH.

REFERENCES:
patent: 4988604 (1991-01-01), Machonkin et al.
patent: 4994365 (1991-02-01), Looker et al.
patent: 5190847 (1993-03-01), Chan et al.
patent: 5213944 (1993-05-01), Adin
patent: 5232818 (1993-08-01), Machonkin et al.

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