Pre-fogged direct reversal silver halide photographic material
AssigneeFuji Photo Film Co., Ltd.
InventorsYoshihiro Takagi, Yoshio Inagaki
Life of this patent
Estimating the term…
Abstract
A pre-fogged direct reversal silver halide photographic material comprises on a support at least an emulsion layer comprising a previously fogged silver halide emulsion for forming a direct positive image. The emulsion layer comprises at least one compound represented by one of formulae (I) to wherein the variables are as defined in the specification: ##STR1##
Claims5
A pre-fogged direct reversal silver halide photographic material comprising on a support at least an emulsion layer comprising a previously fogged silver halide emulsion for forming a direct positive image, wherein said emulsion layer comprises at least one compound represented by one of the following general formula (II), (V) or (VIII):
- ##STR27## wherein T represents an atomic group necessary for the formation of a benzene ring;
- R.sup.1, R.sup.2 and R.sup.3 each represents an alkyl, aralkyl, phenyl or allyl group;
- L.sup.1 represents a trivalent connecting group in which 1, 3, 5 or 7 methine groups are connected to form conjugated double bonds;
- Z.sup.3 represents an atomic group necessary for the formation of a 5- or 6-membered ring;
- X represents an anion;
- and p represents an integer 1 or 2;
- ##STR28## wherein Z.sup.4 represents an atomic group necessary for the formation of a benzene ring, naphthalene ring or heterocyclic aromatic ring;
- T represents O, S, Se, N--R.sup.1, CR.sup.2 R.sup.3 or --CR.sup.4 .dbd.CR.sup.5 --;
- R.sup.1, R.sup.2 and R.sup.3 each independently represents an alkyl group, alkenyl group or aryl group;
- R.sup.4 and R.sup.5 each independently represents a hydrogen atom, halogen atom, alkyl group, aryl group, alkoxy group, aryloxy group, carboxyl group, acyl group, acylamino group, carbamoyl group, sulfamoyl group or sulfonamido group;
- Q is an ethylene group, propylene group, butylene group, or group formed by replacing one or more hydrogen atoms in these groups by a fluorine atom, a chlorine atom or a C.sub.1-4 alkyl group;
- L represents a trivalent group in which 5 or 7 methine groups are connected to form conjugated double bonds;
- and X- represents an anion;
- ##STR29## wherein A.sub.1 and A.sub.2 each independently represents a hydrogen atom a halogen atom, an alkoxy group, an aryloxy group, a cyano group, an alkyl group, an aryl group, or an aralkyl group;
- Z.sup.6 represents an atomic group necessary for the formation of a 5-membered heterocyclic group;
- R.sub.1 to R.sub.4 each independently represents a hydrogen atom a C.sub.1-20 alkyl group, a C.sub.6-20 phenyl group or a C.sub.7-20 benzyl group;
- R.sub.5 represents a C.sub.1-20 alkyl group, a C.sub.6-20 phenyl group, a C.sub.7-20 aralkyl group or may form a 6-membered heterocyclic group with Z.sup.6 ;
- n represents an integer 0, 1 or 2;
- and X.sup.- represents an anion.
Dependencies are inferred from the claim text.