Silver halide photographic material and super-high contrast negative image formation process using the same

Claim 2

A silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer, wherein said at least one silver halide emulsion layer or another layer of the silver halide photographic material provided on the support contains at least one compound represented by the formula (I): ##STR21## wherein A represents an aliphatic group or an aromatic group; B represents a formyl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfinamoyl group, an alkoxysulfonyl group, a thioacyl group, a thiocarbamoyl group or a heterocyclic group; R 0 and R 1 each represents a hydrogen atom, a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group or a substituted or unsubstituted acyl group, with the proviso that at least one of R 0 and R 1 is a hydrogen atom; and B, R 1 and the nitrogen atom to which B and R 1 are bonded may jointly form --N═C<; and at least the compound which is effective to reduce or eliminate black spots without substantially inhibiting the effect of the compound represented by said formula (I) to increase sensitivity and contrast, said compound is represented by the formula (II): C.sub.A --D (II) wherein C A represents a blocking group capable of releasing a development restrainer or a precursor thereof at the time of processing; and D represents a development restrainer or a precursor thereof that is bonded to C A via a hetero atom of D.

Claim 3

A silver halide photographic material as in claim 1, wherein said at least one compound represented by the formula (II) is selected from the compounds represented by the formula (III): ##STR22## wherein C A is as defined in claim 1; E represents a development restrainer that is bonded to X via a hetero atom of E; X represents a divalent linking group that is bonded to C A via a hetero atom of X; and m 1 represents 0 or 1.

Claim 4

A silver halide photographic material as in claim 2, wherein said compounds represented by the formula (III) are compounds represented by the formula (IV), (V) or (VI): ##STR23## wherein E, X and m 1 are as defined in claim 2; R 4 represents a hydrogen atom or a displaceable group; Y 1 represents ##STR24## wherein R 10 , R 11 , R 12 and R 13 each represents a hydrogen atom or a displaceable group and n represents 1 or 2; and Z represents an atom group necessary to form a carbon ring or a heterocyclic ring; ##STR25## wherein X, Y 1 , Z, E and m 1 are as defined with respect to formula (IV); and R 5 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group or a substituted or unsubstituted aryl group; or ##STR26## wherein X, E and m 1 are as defined with respect to formula (IV); Y 2 represents ##STR27## R 6 represents a hydrogen atom or a substituent bonded via a carbon atom thereof; R 7 and R 8 , which may be the same or different, each represents a hydrogen atom or a substituent, or R 7 and R 8 may jointly form a double bond or a ring; R 9 represents a hydrogen atom or a substituent; R 6 , R 7 , R 8 and R 9 may be taken together to form a ring as long as the oxygen atom of the carbonyl group is capable of intramolecular nucleophilic attacking on Y 2 ; m 2 represents an integer of from 1 to 4; and m 3 represents 0 or 1.

Claim 5

A silver halide photographic material as in claim 1, wherein said at least one compound represented by the formula (I) is present in an amount of 1×10 -6 to 1×10 -1 mol per mol of silver halide and said at least one compound represented by the formula (II) is present in an amount of 5×10 -6 to 1.0 mol per mol of silver halide.

Claim 6

A silver halide photographic material as in claim 1, wherein said at least one compound represented by the formula (I) is present in an amount of 1×10 -5 to 4×10 -1 mol per mol of silver halide and said at least one compound represented by the formula (II) is present in an amount of from 1×10 -5 to 1×10 -1 mol per mol of silver halide.

Claim 7

A silver halide photographic material as in claim 1, wherein: the aliphatic group represented by A is selected from the group consisting of a t-butyl group, an n-octyl group, t-octyl group, a cyclohexyl group, a pyrrolidyl group, an imidazolyl group, a tetrahydrofuryl group and a morpholino group; the aromatic group represented by A is selected from the group consisting of a benzene ring, a naphthalene ring, a pyridine ring, a pyrimidine ring, an imidazole ring, a pyrazole ring, a quinoline ring, an isoquinoline ring, a benzimidazole ring, a thiazole ring, and a benzothiazole ring; and the heterocyclic group represented by B is a pyrimidine ring, a triazine ring, a pyridine ring, a quinoline ring, a benzimidazole ring, a benzothiazole ring, a benzoxazole ring or an imidazoline ring.

Claim 8

A silver halide photographic material as in claim 2, wherein E represents a development restrainer selected from the group consisting of mercaptotetrazoles, mercaptotriazoles, mercaptoimidazoles, mercaptopyrimidines, mercaptobenzimidazoles, mercaptobenzothiazoles, mercaptobenzoxazoles, mercaptothiadiazoles, benzotriazoles, benzimidazoles, indazoles, adenines and guanines; and X represents a group selected from the groups having the following structure wherein (E) shows the position wherein X is bonded to E: ##STR28##

Claim 9

A silver halide photographic material as in claim 3, wherein: E represents a development restrainer selected from the group consisting of mercaptotetrazoles, mercaptotriazoles, mercaptoimidazoles, mercaptopyrimidines, mercaptobenzimidazoles, mercaptobenzothiazoles, mercaptobenzoxazoles, mercaptothiadiazoles, benzotriazoles, benzimidazoles, indazoles, adenines and guanines; R 4 , R 10 , R 11 , R 12 and R 13 each represents a hydrogen atom or a displaceable group selected from the group consisting of a halogen atom, an alkyl group, an alkenyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyloxy group, a carbonic acid ester group, an amino group, a carbonamido group, an ureido group, a carboxyl group, a hydroxylcarbonyl group, a carbamoyl group, an acyl group, a sulfo group, a sulfonyl group, a sulfinyl group, a sulfamoyl group, a cyano group and a nitro group; R 6 is a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, a cycloalkyl group or a heterocyclic residue; R 7 and R 8 , which may be the same or different, each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted phenyl group, a hydroxyl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted acyl group, and R 7 and R 8 may be bonded via a double bond or form a ring; R 9 represents an alkyl group, an alkenyl group or a phenyl group; and the carbon ring or heterocyclic ring represented by: ##STR29## is a 5- or 7-membered heterocyclic ring containing at least one hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom.

Claim 10

A silver halide photographic material as in claim 3, wherein said carbon ring or heterocyclic ring represented by: ##STR30## is selected from the group consisting of cyclopentenone, cyclohexenone, cycloheptenone, benzocycloheptenone, benzocyclopentanone, benzocyclohexanone, 4-pyridone, 4-quinolone, 2-pyrrone, 4-pyrrone, 1-thio-2-pyrrone, 1-thio-4-pyrrone, coumarin, chromone, uracil and the heterocyclic rings having the following formula: ##STR31## wherein R 10 and R 11 are defined in claim 3; R 14 represents a hydrogen atom or a substituent; R 15 and R 16 each represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, a carbamoyl group, a hydroxycarbonyl group, an acyl group, a sulfonyl group, a sulfinyl group or a sulfamoyl group; and wherein said carbon ring or heterocyclic ring represented by: ##STR32## is selected from the group consisting of cyclopentanone, cyclohexanone, cycloheptanone, benzocycloheptanone, benzocyclopentanone, benzocyclohexanone, 4-tetrahydropyridone, 4-dihydroquinone and 4-tetrahydropyrrone.

Claim 11

A silver halide photographic material as in claim 1, wherein said at least one compound represented by the formula (I) and said at least one compound represented by the formula (II), which may be in the same layer or in different layers, are incorporated in a silver halide emulsion layer, a protective layer, an intermediate layer, a filter layer, or an antihalation layer.

Claim 12

A process for forming a super-high contrast negative image, comprising imagewise exposing and developing a silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer, said emulsion layer or another layer containing at least one compound represented by the formula (I): ##STR33## wherein A represents an aliphatic group or an aromatic group; B represents a formyl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfinamoyl group, an alkoxysulfonyl group, a thioacyl group, a thiocarbamoyl group or a heterocyclic group; R 0 and R 1 each represents a hydrogen atom, a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group or a substituted or unsubstituted acyl group, with the proviso that at least one of R 0 and R 1 is a hydrogen atom; and B, R 1 and the nitrogen atom to which B and R 1 are bonded may jointly form --N═C<; and at least one compound represented by the formula (II): C.sub.A --D (II) wherein C A represents a blocking group capable of releasing a development restrainer or a precursor thereof at the time of processing; and D represents a development restrainer or a precursor thereof that is bonded to C A via a hetero atom of D, and developing the exposed material with a developer containing not less than 0.15 mol/l of a sulfite ion and having a pH of from 10.5 to 12.3.

Claim 13

A process for forming a super-high contrast negative image, comprising imagewise exposing and developing a silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer, said emulsion layer or another layer containing at least one compound represented by the formula (I): ##STR33## wherein A represents an aliphatic group or an aromatic group; B represents a formyl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfinamoyl group, an alkoxysulfonyl group, a thioacyl group, a thiocarbamoyl group or a heterocyclic group; R 0 and R 1 each represents a hydrogen atom, a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group or a substituted or unsubstituted acyl group, with the proviso that at least one of R 0 and R 1 is a hydrogen atom; and B, R 1 and the nitrogen atom to which B and R 1 are bonded may jointly form --N═C<; and at least one compound represented by the formula (II): C.sub.A --D (II) wherein C A represents a blocking group capable of releasing a development restrainer or a precursor thereof at the time of processing; and D represents a development restrainer or a precursor thereof that is bonded to C A via a hetero atom of D, and developing the exposed material with a developer containing not less than 0.15 mol/l of a sulfite ion and having a pH of from 10.5 to 12.3.

Claim 14

A process for forming a super-high contrast negative image as claimed in claim 11, wherein said developing is carried out with a developer containing a sulfite ion in an amount of from 0.4 mol/l to 2.5 mol/l and having a pH of 10.5 to 12.3.