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US4094682A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for processing light-sensitive silver halide photographic material

Assignee: Konica Minolta Inc
•
Filing: 1976-10-20
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Granted: 1978-06-13
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Expires: 1996-10-20
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Abstract

Abstract An improved method for processing an imagewise exposed light-sensitive silver halide photographic material containing a coupler is described, wherein the siliver halide photographic material is processed with a developing bath and thereafter processed, in the presence of imagewise developed silver and a color developing agent, with a solution containing hydrogen peroxide, whereby, after the development, the developed light-sensitive silver halide photographic material is processed with a solution containing a deactivating agent or a silver halide solvent, and thereafter subjecting the thus processed light-sensitive silver halide photographic material to spraying with and/or intermittent dipping in said solution containing hydrogen peroxide.

Inventors

  • 👤 Mitsuto Fujiwhara
  • 👤 Syunji Matsuo
  • 👤 Toyoaki Masukawa
  • 👤 Mikio Kawasaki
  • 👤 Yutaka Kaneko

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 21:58
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C7/00; G03C7/30; G03C7/3017; Y; Y10; Y10S; Y10S430/00; Y10S430/144

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 156 words
An improved method for processing an imagewise exposed light-sensitive silver halide photographic material containing a coupler, wherein the silver halide photographic material is processed with a developing bath and thereafter processed, in the presence of imagewise developed silver and a color developing agent, with a solution containing hydrogen peroxide, the improvement comprising processing, after the development, the developed light-sensitive silver halide photographic material with a solution containing a deactivating agent capable of being adsorbed on silver halide or reacting with silver to form sparingly soluble silver salts and selected from the group consisting of 2-mercaptobenzimidazole, 2-mercaptobenzothiazole, 2-mercapto-5-nitrobenzothiazole, 4-methyl-2-mercaptothiazole, 4,5-dimethyl-2-mercaptothiazole, 1-phenyl-5-mercaptotetrazole, 1,2-dimethyl-5-mercapto-1,3,4-triazole, 2-mercapto-5-phenyl-1,3,4- oxadiazole, mercaptoacetic acid, β-mercaptopropionic acid, thiosalicylic acid, benzotriazole, 5-nitrobenzimidazole, 5-methylbenzotriazole, 4-chlorobenzotriazole, 5,5-diphenylhydantoin, 2-methyl-3-(γ-sulfoxypropyl) benzoselenazole, 3-methylbenzothiazole toluenesulfonate, N-isopropyl-α-picolinium bromide, N-ethyl-2-methylbenzothiazolium chloride, phenosafranine, pinakryptol yellow 1,1',3,3,3',3'-hexamethyl-5,5-dinitroimidocarbocyanine-p-toluenesulfonate, 1,3-diallyl-2-[(3,5-dimethyl-1-phenyl-4-pyrazolyl)-vinyl]-imidazo-[4,5-b]-quinoxalium iodide, benzyladenine, 8-hydroxyquinoline, o-phenanthroline and thiosugar, and thereafter subjecting the thus processed light-sensitive silver halide photographic material to spraying with and/or intermittent dipping in said solution containing hydrogen peroxide.
Claim 2
Dependent Claim 156 words
An improved method for processing an imagewise exposed light-sensitive silver halide photographic material containing a coupler, wherein the silver halide photographic material is processed with a developing bath and thereafter processed, in the presence of imagewise developed silver and a color developing agent, with a solution containing hydrogen peroxide, the improvement comprising processing, after the development, the developed light-sensitive silver halide photographic material with a solution containing a deactivating agent capable of being adsorbed on silver halide or reacting with silver to form sparingly soluble silver salts and selected from the group consisting of 2-mercaptobenzimidazole, 2-mercaptobenzothiazole, 2-mercapto-5-nitrobenzothiazole, 4-methyl-2-mercaptothiazole, 4,5-dimethyl-2-mercaptothiazole, 1-phenyl-5-mercaptotetrazole, 1,2-dimethyl-5-mercapto-1,3,4-triazole, 2-mercapto-5-phenyl-1,3,4- oxadiazole, mercaptoacetic acid, β-mercaptopropionic acid, thiosalicylic acid, benzotriazole, 5-nitrobenzimidazole, 5-methylbenzotriazole, 4-chlorobenzotriazole, 5,5-diphenylhydantoin, 2-methyl-3-(γ-sulfoxypropyl) benzoselenazole, 3-methylbenzothiazole toluenesulfonate, N-isopropyl-α-picolinium bromide, N-ethyl-2-methylbenzothiazolium chloride, phenosafranine, pinakryptol yellow 1,1',3,3,3',3'-hexamethyl-5,5-dinitroimidocarbocyanine-p-toluenesulfonate, 1,3-diallyl-2-[(3,5-dimethyl-1-phenyl-4-pyrazolyl)-vinyl]-imidazo-[4,5-b]-quinoxalium iodide, benzyladenine, 8-hydroxyquinoline, o-phenanthroline and thiosugar, and thereafter subjecting the thus processed light-sensitive silver halide photographic material to spraying with and/or intermittent dipping in said solution containing hydrogen peroxide.
Claim 3
Dependent Claim 33 words
An improved method for processing an exposed light-sensitive silver halide photographic material according to claim 1, wherein said color developing agent is selected from the group consisting of p-aminophenol compounds and p-phenylenediamine compounds.
Claim 4
Dependent Claim 44 words
An improved method for processing an exposed light-sensitive silver halide photographic material according to claim 2, wherein said light-sensitive silver halide photographic material contains a silver halide and a photographic coupler in an amount stoichiometrically greater than the developed silver of said silver halide.

References Cited (Backward Citations)

US3674490A Cited
US3862842A Cited
US3822129A Cited
US3841873A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-06-12 1981-12-12 1982-06-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-06-12 1985-12-12 1986-06-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-06-12 1989-12-12 1990-06-13 $7700.00 Window Closed / Lapsed

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