US 5,401,621 AGranted

Method of fixing and bleach-fixing a silver halide photographic material using mesoionic compounds

AssigneeFuji Photo Film Co., Ltd.

InventorsTetsuro Kojima, Nobuo Watanabe

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Abstract

A process for processing an imagewise exposed silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, comprising the steps of developing in a developing bath and processing in a bath having a fixing ability, wherein the bath having the fixing ability contains at least one mesoionic compound represented by formula (I): ##STR1## In a second embodiment, a process is disclosed for processing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, comprising the steps of subjecting the material to color development, and then subjecting the material to blix in a blix bath, wherein the blix bath contains at least one mesoionic compound represented formula (III) or (IV): ##STR2##

Claims14

Dependent claims

##STR52## wherein X represents N or C--R.sub.1 ;
Y and Z each represents O, S, N, N--R.sub.2 or C--R.sub.3 ;
U represents O, S or N--R.sub.4 ;
and A.sup..crclbar. represents --O.sup..crclbar., --S.sup..crclbar. or --N.sup..crclbar. R, in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and each represents --T).sub.n R' (wherein T represents --S--, --O--, ##STR53## --SO.sub.2 -- or combinations thereof;
and n represents 0 or 1);
R, R' and R" may be the same or different and each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group or a heterocyclic group, with the proviso that at least one of R, R' and R" is substituted by a carboxylic acid or sulfonic acid group;
and X and U, Y and Z, and Z and U may be ring-closed.

4 more elements

A process for processing an imagewise exposed silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, comprising the steps of subjecting the material to color development in a color developing bath containing a color developing agent, and then subjecting the material to blix in a blix bath, wherein said blix bath contains bleaching agent and at least one mesoionic compound represented by formula (III) or (IV) as a fixing agent in an amount of from 2.times.10.sup.-1 to 3 mol/l and said blix bath is substantially free of other fixing agents:

##STR56## wherein M represents a 5-membered heterocyclic ring where the ring members of the heterocyclic ring are selected from the group consisting of carbon atom, nitrogen atom, oxygen atom, sulfur atom and selenium atom;
and A.sub.1.sup..crclbar. represents --O.sup..crclbar., --S.sup..crclbar. or --.sup..crclbar. NR.sub.11 in which R.sub.11 represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group or a heterocyclic group;
##STR57## wherein X.sub.1 represents N or C--R.sub.13 ;
Y.sub.1 represents O, S, N or N--R.sub.14 ;
Z represents N, N--R.sub.15 or C--R.sub.16 ;
and R.sub.12, R.sub.13, R.sub.14, R.sub.15 and R.sub.16 each represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, a heterocyclic group, an amino group, an acylamino group, a sulfonamide group, a ureide group, a sulfamoylamino group, an acyl group, a thioacyl group, a carbamoyl group or a thiocarbamoyl group, with the proviso that R.sub.13 and R.sub.16 each may be a hydrogen atom and R.sub.12 and R.sub.13, R.sub.12 and R.sub.15, R.sub.12 and R.sub.16, R.sub.14 and R.sub.15, and R.sub.14 and R.sub.16 may together form a ring.

3 more elements

Dependencies are inferred from the claim text.