Direct positive silver halide photographic material

Details Direct positive silver halide photographic material Direct positive silver halide photographic material

G - Physics

03

C

96/118

G03C 1/485 (2006.01) G03C 1/06 (2006.01)

Patent

CA 1333132

A direct positive silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer comprising a prefogged direct-positive silver halide emulsion, preferably one having a chloride content of at least 70 mol%, said emul- sion layer or a hydrophilic colloid layer adjacent to said emulsion layer containing at least one compound represented by the following general formula (I) and, optionally, a specified organic desensitizer, Image (I) (T)r wherein Z1 represents a group of nonmetallic atoms necessary to com- plete a nitrogen-containing hetero ring; T represents an alkyl group, a cycloalkyl group, an alkenyl group, a halogen atom, a cyano group, a trifluoromethyl group, an alkoxy group, an aryloxy group, a hydroxy group, an alkoxycarbonyl group, a carboxyl group, a carbamoyl group, a sulfamoyl group, an aryl group, an acylamino group, a sulfonamido group, a sulfo group, or a benzo-condensed ring, each of which is or is not substituted; q repre- sents 1, 2, or 3; and r represents 0, 1, or 2.

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