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US4332878A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic image-forming method

Assignee: Fujifilm Holdings Corp
•
Filing: 1981-04-30
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Granted: 1982-06-01
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Expires: 2001-04-30
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Abstract

Abstract A photographic image-forming method comprising imagewise exposing a silver halide photographic light-sensitive element containing a specific hydroquinone derivative in the silver halide emulsion layer of substantially the surface latent image type or at least one hydrophilic colloid layer thereof and then developing the exposed light-sensitive element in the presence of a specific hydrazine compound. The method forms a photographic image having markedly high negative gradation.

Inventors

  • 👤 Yoshitaka Akimura
  • 👤 Shigeo Hirano
  • 👤 Hiroyuki Mifune
  • 👤 Eiichi Okutsu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 23:18
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021; C; C07; C07D; C07D231/00; C07D231/54; C07D231/56; G03C1/00; G03C1/005; G03C1/04; G03C1/043; G03C1/06; G03C1/08; G03C1/10; G03C1/42; G03C5/3014; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/16

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 237 words
A method for forming a photographic image which comprises imagewise exposing a silver halide photographic light-sensitive element having a silver halide emulsion layer of substantially the surface latent image type, said silver halide emulsion layer or at least one member of other hydrophilic colloid layers containing a compound represented by formula (I) below, and developing the exposed light-sensitive element in the presence of a compound represented by formula (II) below: ##STR10## wherein X is an indazole radical which is linked to the benzene nucleus through the nitrogen atom at the 1- or 2-position thereof and which may be substituted; R 1 , R 2 and R 3 may be the same or different and each represents a hydrogen atom, an alkyl group, an aryl group, an alkylthio group, an arylthio group, a halogen atom, a hydroxy group, an alkoxy group, an aryloxy group, an acyl group, an alkoxycarbonyl group, an amido group, a sulfonamido group, a carbamoyl group, a sulfamoyl group, a heterocyclic radical, or X, and R 2 and R 3 may combine together to form a ring; R 4 and R 5 each represents a hydrogen atom or a group which is hydrolyzed in the presence of an alkali; R.sup.6 NHNHCOR.sup.7 (II) wherein R 6 represents an aryl group which may be substituted, and R 7 represents a hydrogen atom, an aryl group which may be substituted, or an alkyl group which may be substituted.
Claim 2
Independent Claim 237 words
A method for forming a photographic image which comprises imagewise exposing a silver halide photographic light-sensitive element having a silver halide emulsion layer of substantially the surface latent image type, said silver halide emulsion layer or at least one member of other hydrophilic colloid layers containing a compound represented by formula (I) below, and developing the exposed light-sensitive element in the presence of a compound represented by formula (II) below: ##STR10## wherein X is an indazole radical which is linked to the benzene nucleus through the nitrogen atom at the 1- or 2-position thereof and which may be substituted; R 1 , R 2 and R 3 may be the same or different and each represents a hydrogen atom, an alkyl group, an aryl group, an alkylthio group, an arylthio group, a halogen atom, a hydroxy group, an alkoxy group, an aryloxy group, an acyl group, an alkoxycarbonyl group, an amido group, a sulfonamido group, a carbamoyl group, a sulfamoyl group, a heterocyclic radical, or X, and R 2 and R 3 may combine together to form a ring; R 4 and R 5 each represents a hydrogen atom or a group which is hydrolyzed in the presence of an alkali; R.sup.6 NHNHCOR.sup.7 (II) wherein R 6 represents an aryl group which may be substituted, and R 7 represents a hydrogen atom, an aryl group which may be substituted, or an alkyl group which may be substituted.
Claim 3
Dependent Claim 66 words
The method for forming a photographic image as claimed in claim 1, wherein a substituent for the indazole radical is a nitro group, an amino group, a carboxy group, a cyano group, a halogen atom, a hydroxy group, an alkyl group, an alkoxy group, an alkoxycarbonyl group, an alkylthio group, an acyl group, a sulfamoyl group, a carbamoyl group, an amido group or an acyloxy group.
Claim 4
Dependent Claim 30 words
The method for forming a photographic image as claimed in claim 1, wherein a substituent for the indazole radical is a nitro group, a cyano group or a halogen atom.
Claim 5
Dependent Claim 18 words
The method for forming a photographic image as claimed in claim 1, wherein X is a 5-nitroindazole group.
Claim 6
Dependent Claim 44 words
The method for forming a photographic image as claimed in claim 1, wherein R 1 , R 2 and R 3 are each hydrogen, an alkyl group, an aryl group, an alkylthio group, a halogen atom, an alkoxy group, a carbamoyl group or X.
Claim 7
Dependent Claim 38 words
The method for forming a photographic image as claimed in claim 1, wherein a ring which is formed by bonding R 2 and R 3 each other is a naphthohydroquinone ring, a 5,6-tetramethylenehydroquinone ring or a 5,6-(1,3-cyclopentylenyl)hydroquinone ring.
Claim 8
Dependent Claim 40 words
The method for forming a photographic image as claimed in claim 1, wherein said group capable of being hydrolyzed in the presence of an alkali is an acyl group, a halogen-substituted acyl group, an alkoxycarbonyl group or an aryloxycarbonyl group.
Claim 9
Dependent Claim 21 words
The method for forming a photographic image as claimed in claim 1, wherein R 4 and R 5 are each hydrogen.
Claim 10
Dependent Claim 56 words
The method for forming a photographic image as claimed in claim 1, wherein said compound represented by formula (I) is Compound I-1, I-2, I-3, I-4, I-5, I-6, I-7, I-8, I-9, I-10, I-11, I-12, I-13, I-14, I-15, I-16, I-17, I-18, I-19, I-20, I-21, I-22, I-23, I-24, I-25, I-26, I-27, I-28, I-29, I-30, I-31, I-32, I-33 or I-34.
Claim 11
Dependent Claim 35 words
The method for forming a photographic image as claimed in claim 1, wherein said compound represented by the formula (I) is Compound I-1, I-2, I-3, I-4, I-7, I-10, I-12, I-15, I-16, I-20, I-27 or I-30.
Claim 12
Dependent Claim 27 words
The method for forming a photographic image as claimed in claim 1, wherein said compound represented by formula (I) is incorporated in said silver halide emulsion layer.
Claim 13
Dependent Claim 26 words
The method for forming a photographic image as claimed in claim 1, wherein said compound represented by formula (I) is incorporated in said hydrophilic colloid layer.
Claim 14
Dependent Claim 31 words
The method for forming a photographic image as claimed in claim 12, wherein said hydrophilic colloid layer is an undercoat layer, an overcoat layer, a protective layer or an intermediate layer.
Claim 15
Dependent Claim 32 words
The method for forming a photographic image as claimed in claim 1, wherein the amount of said compound represented by formula (I) is from about 10 -6 to 10 -1 mol/mol Ag.
Claim 16
Dependent Claim 23 words
The method for forming a photographic image as claimed in claim 1, wherein R 6 is a benzene ring or a naphthalene ring.
Claim 17
Dependent Claim 19 words
The method for forming a photographic image as claimed in claim 1, wherein R 6 is a benzene ring.
Claim 18
Dependent Claim 59 words
The method for forming a photographic image as claimed in claim 1, wherein R 7 is a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, a phenyl group, a 4-chlorophenyl group, a 4-bromophenyl group, a 3-chlorophenyl group, a 4-cyanophenyl group, a 4-carboxyphenyl group, a 4-sulfophenyl group, a 3,5-dichlorophenyl group or a 2,5-dichlorophenyl group.
Claim 19
Dependent Claim 26 words
The method for forming a photographic image as claimed in claim 1, wherein R 7 is a hydrogen atom, a methyl group or a phenyl group.
Claim 20
Dependent Claim 19 words
The method for forming a photographic image as claimed in claim 1, wherein R 7 is a hydrogen atom.
Claim 21
Dependent Claim 41 words
The method for forming a photographic image as claimed in claim 1, wherein said compound represented by formula (II) is incorporated in said silver halide photographic light-sensitive element in an amount of from about 10 -8 to 10 -1 mol/mol Ag.
Claim 22
Dependent Claim 53 words
The method for forming a photographic image as claimed in claim 1, wherein said compound represented by formula (II) is incorporated in a prebath prior to development processing or a development processing solution in an amount of from about 5 mg to 5 g per liter of the prebath or developing processing solution.

References Cited (Backward Citations)

US3972719A Cited
US4221857A Cited
US4255510A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-05-31 1985-11-30 1986-06-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-05-31 1989-11-30 1990-06-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-05-31 1993-11-30 1994-06-01 $7700.00 Window Closed / Lapsed

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