Classifications

• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/42—Bleach-fixing or agents therefor ; Desilvering processes
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
  • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
  • G03C5/29—Development processes or agents therefor
  • G03C5/31—Regeneration; Replenishers
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/3046—Processing baths not provided for elsewhere, e.g. final or intermediate washings

Definitions

• the present invention relates to a method of processing silver halide color light-sensitive materials using a reduced amount of a bleach-fix replenisher solution. More particularly, it relates to a method of processing silver halide color light-sensitive materials, by which contamination of color light-sensitive materials is substantially prevented and formation of a leuco form of dyes is substantially prevented.
• a process in order to obtain color images by carrying out development processing of an imagewise exposed silver halide color light-sensitive material, a process generally is used which comprises bleaching metallic silver formed upon a color development step with an oxidizing agent (bleaching agent) followed by fixing with a silver halide fixing agent.
• a process is also used which comprises a bleach-fixing step in which the bleaching step is combined with the fixing step.
• Typical bleach-fix solutions used for such a process have been described in West German Patents 866,605 and 966,410, British Patent 1,014,396, U.S. Patents 3,189,452 and 3,615,508, and Japanese Patent Application (OPI) Nos. 781/71, 13934/72, 65940/73 and 140128/75 (the term "OPI" as used herein refers to a "published unexamined Japanese patent application"), etc.
• a bleaching agent oxidizing agent
• a fixing agent a bleaching agent
• a fixing agent a bleaching agent
• the thiosulfates used chiefly as fixing agents are reducing agents
• a comparatively weak oxidizing agent such as a metal complex of an organic acid is selected as the bleaching agent.
• the prepared bleach-fix solution is inherently inferior in oxidation ability as compared with the bleaching solution.
• a method wherein bromic acid salts and iodides or bromides are added to a bleach-fix solution is disclosed in U. S. Patent 3,770,437, but it is not suitable because it deteriorates the stability of the bleach-fix solution and bleaching fog is formed.
• a method which comprises processing with a solution containing persulfates as a pre-bath or post-bath of the bleach-fix bath is also know from Japanese Patent Application (OPI) No. 26139/73, but it is unsuitable for practical use, because of inferior recovery of color and formation of bleaching fog. Further, a method wherein various aminopolycarboxylic acid metal complexes are combined is described in Japanese Patent Publication No.
• an object of'the present invention is to provide a method of processing silver halide color light-sensitive materials, by which the replenishing amount of bleach-fix solution required is greatly reduced and contamination of the-light-sensitive materials and inferior recovery of color are prevented.
• the method of the present invention comprises the steps of color developing a silver halide color light-sensitive material, substantially washing the .silver halide color light-sensitive material with water for 5 to 90 seconds and thereafter bleach-fixing in a bath which is replenished by the addition of a standard replenisher solution in a reduced amount of from about 30 ml to 120 ml per m 2 of silver halide color light-sensitive material.
• the processing temperature is typically-about 25°C -to 50°C and, preferably, about 30°C to 42°C.
• the processing time is 30 seconds to 10 minutes and, preferably, about 1 minute to 5 minutes.
• the replenishing amount is about 50 ml to 600 ml and, preferably, about 100 ml to 500 ml per m 2 of the sensitive material.
• the pH of the color developing solution of the present invention is about 9 to 12.
• the composition of the color developing solution is not limited, and can contain various compounds including any color developing agents known in the art.
• aromatic primary amine developing agents are widely used and p-phenylenediamine derivatives are particularly preferred.
• Typical examples of such agents include the following, but the present invention is not to be construed as limited to the examples cited.
• the color developing solution used in the present invention may contain various kinds of organic or inorganic chelating agents.
• Typical inorganic chelating agents include sodium tetrapolyphosphate and sodium hexametaphosphate, and typical organic chelating agents include organic carboxylic acids, organic phosphonic acids and organic phosphonocarboxylic acids.
• the organic carboxylic acids used may include acrylic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, cork acid, azelaic acid, sebacic acid, nonane dicarboxylic acid, decane dicarboxylic acid, undecane dicarboxylic acid, maleic acid, fumalic acid, phthalic acid, citraconic acid, mesaconic acid, itaconic-acid, malic acid, citric acid, and tartaric acid, etc.
• useful organic carboxylic acids are not limited to these examples.
• aminopolycarboxylic acids can be used, for example, iminodiacetic acid, nitrilotriacetic acid, nitrilotripropionic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, triethylenetetramine- hexaacetic acid, hydroxyethylethylenediaminetetraacetic acid, glycol ether diaminetetraacetic acid, hydroxyethyl- iminodiacetic acid, diaminopropanol tetraacetic acid, 1,2-diaminopropanetetraacetic acid and compounds described in Japanese Patent Application (OPI) Nos. 25632/77, 67747/80, and 102624/82 and Japanese Patent Publication No. 40900/78, etc.
• OPI Japanese Patent Application
• Organic phosphonic acids include the hydroxy- alkylidene-diphosphonic acids described in U.S. Patents 3,214,454 and 3,794,591 and German Patent Application (OLS) No. 2,227,639, and compounds described in Research Disclosure, No. 18170.
• Aminophosphonic acids include aminotris-(methylenephosphonic acid) and ethylenediamine-N,N,N',N'-tetramethylene- phosphonic acid.
• aminotris-(methylenephosphonic acid) and ethylenediamine-N,N,N',N'-tetramethylene- phosphonic acid.
• Phosphonocarboxylic acids include the compounds described in Japanese Patent Application (OPI) Nos. 102726/77, 42730/78, 121127/79, 4024/80, 4025/80, 126241/80, 65955/80, and 65956/80, and Research Disclosure, No. 18170.
• chelating agents may be used in the form of an alkali metal salt or ammonium salt. Further, two or more kinds of chelating agents may be used in combination.
• the amount of these chelating agents to be added is in a range of about 1 x 10 -4 mols to 1 x 10 1 mols and, preferably, about 1 x 10 -3 mols to 1 x 10 2 mols per liter of the color developing solution.
• preferred compounds are aminopolycarboxylic acids, organic phosphonic acids and aminophosphonic acids.
• various preservatives can be added, such as, for example, sulfites and hydroxylamines.
• compounds described in Japanese Patent Application (OPI) Nos. 27638/77, 49828/77, 102727/77, 3532/79, 94349/81, 143020/77, 89425/78, 75647/81, 41448/80, 47038/81, and 32140/81 and U.S. Patents 3,615,503, 3,746,544, and 3,823,017, and British Patent 1,306,176 may be added.
• the color developing solution used in the present invention may contain compounds known as developer components.
• alkali agents and buffer agents sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium tertiary phosphate, potasium tertiary phosphate, potassium metaborate, and borax, etc. are used alone or in combination.
• various salts such as disodium or dipotassium hydrogen phosphate, sodium or potassium dihydrogen phosphate, sodium or potassium bicarbonate, boric acid, alkali nitrates or alkali sulfates, etc.
• suitable developing accelerators can be added to the color developing solution.
• suitable developing accelerators include various pyridinium compounds and other cationic compounds described in U.S. Patents 2,648,604, and 3,171,247, and Japanese Patent Publication No. 9503/69; cationic dyes such as phenosafranine; neutral salts such as thallium nitrate or potassium nitrate; nonionic compounds such as polyethylene glycol or derivatives or polythioethers, etc., described in Japanese Patent Publication 9304/69 and U.S. Patents 2,531,832, 2,533,990, and 2,577,127, and 2,950,970; organic solvents described in Japanese Patent Publication No.
• inorganic or organic antifoggants it is possible to add suitable inorganic or organic antifoggants to the color developing solution.
• suitable inorganic antifoggants alkali metal halides such as potassium bromide, sodium bromide or potassium iodide can be used.
• nitrogen-containing heterocyclic compounds such as benzotriazole, 6-nitrobenzimidazole, 5-nitroisoindazole, 5-methylbenzotriazole, 5-nitrobenzotriazole, 5-chlorobenzotriazole, 2-thiazolylbenzimidazole, 2-thiazolylmethyl-benzimidazole or hydroxyazaindolidine, mercapto-substituted heterocyclic compounds such as l-phenyl-5-mercaptotetrazole, 2-mercaptobenzimidazole or 2-mercaptobenzothiazole, and mercapto-substituted aromatic compounds such as thiosalicylic acid.
• nitrogen-containing heterocyclic compounds such as benzotriazole, 6-nitrobenzimidazole, 5-nitroisoindazole, 5-methylbenzotriazole, 5-nitrobenzotriazole, 5-chlorobenzotriazole, 2-thiazolylbenzimidazole, 2-thiazolylmethyl-benzimidazole or hydroxy
• citrazinic acid As competing couplers, citrazinic acid, J acid and H acid, etc., are known and, for example, it is possible to use compounds described in U. S. Patent 2,742,832, 3,520,690, 3,560,212, and 3,645,737 and Japanese Patent Publication Nos. 9504/69, 9506/69, and 9507/69, etc.
• alkali metal borohydride As foggants, alkali metal borohydride, aminoborane, and ethylenediamine, etc. can be used. In addition, compounds described in Japanese Patent Publication No. 38816/72 can be used.
• p-aminophenol N-benzyl-p-aminophenol and l-phenyl-3-pyrazolidones, etc.
• compounds described in Japanese Patent Publication Nos. 41475/70 and 19037/71 are available.
• the step of washing with water is carried out after the color development step.
• the time of water wash processing may be shorter than the conventional washing time, in a range of about 5 seconds to 90 seconds and, preferably, of about 10 seconds to 40 seconds.
• the term "washing time” means the time from the beginning of washing to introduction of the color light-sensitive material into the bleach-fixing bath, which includes the time during which the color light-sensitive material travels into the next bath (crossover time).
• the amount of water used for washing is in a range of about 50 ml to 20 ! and, preferably, about 100 ml to 5 l per m 2 of the color light-sensitive material.
• the temperature of washing is in a range of about 5°C to 60°C and, preferably, about 15°C to 40°C.
• the method of washing with water is not unduly limited, and may be carried out by a method which comprises providing baths and immersing the light-sensitive material in the baths, by a method which comprises spraying water by a sprayer, or by any other method known in the art.
• substantially washing with water means to treat with water or with conventional washing water, or in addition to treat with a aqueous solution prepared by adding various buffer agents, chelating agents or antifungal agents to water or washing water.
• Typical examples of typical buffer agents include borates, metaborates, borax, phosphates, mono- carboxylates, dicarboxylates, polycarboxylates, oxy- carboxylates, amino acids, aminocarboxylates, primary phosphates, secondary phosphates, tertiary phosphates, sulfonates, sodium hydroxide and potassium hydroxide.
• chelating agents include polyphosphates, pyrophosphates, metaphosphates, organic carboxylates, aminopolycarboxylates, alkylidene di- phosphonates, aminopolyphosphonates and phosphonocarboxylates, etc. as described above.
• antifungal agents include sorbic acid, sodium dehydroacetate, propionic acid, thiabenzazole, benzoic acids, and chloramines, etc.
• the bleach-fixing step in the present invention is carried out at a processing temperature of about 25°C to 50°C and, preferably, about 30°C to 42°C.
• the processing time is in a range of about 20 seconds to 10 minutes and, preferably, about 40 seconds to 3 minutes.
• the replenishing amount is significantly less than the amount typically used of several hundred ml/m 2 (a range of 1/several tens to 1/several, as compared with the amount typically used), and in the present process it is in a range of about 30 ml to 120 ml and, preferably, about 40 ml to 100 ml per m 2 of the sensitive material.
• the pH of the bleach-fix replenisher solution used in the present invention is in a range of about 5 to 8 and, preferably, about 6 to 7.
• the bleach-fix replenisher solution is mainly comprised of three components of a bleaching agent, a fixing agent and a preservative.
• iron (III) complexes of aminopolycarboxylic acids are used, which may include sodium salts, potassium salts, ammonium salts or watersoluble amine salts.
• Particularly preferred examples are ferric salts of ethylenetetradiaminetetraacetic acid, for example, sodium ethylenediaminetetraacetato iron (III) complex, potassium ethylenediaminetetraacetato iron (III) complex and ammonium ethylenediaminetetraacetato iron (III) complex.
• the amount of them used is in a range of about 0.1 mol/l to 0.5 mol/l and, preferably, about 0.15 mol/l to 0.40 mol/1.
• thiosulfates As fixing agents, known thiosulfates, thiocyanates, and thioureas, etc., can be used, and thiosulfates such as sodium thiosulfate, potassium thiosulfate, and ammonium thiosulfate are particularly preferred.
• the amount used is in a range of about 0.5 mol/l to 3.0 mol/l and, preferably, about 1.0 mol/l to 2.0 mol/1.
• sulfites, metabisulfites, ascorbic acids described in Japanese Patent Application (OPI) No. 52748/81 and carbonyl-bisulfurous acid addition products described in Japanese Patent Publication 38895/79 can be used. It is particularly preferred to use sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, potassium bisulfite, ammonium bisulfite, sodium metabisulfite, potassium metabisulfite, and ammonium metabisulfite. The amount used is in a range of about 0.1 mol/l to about 0.4 mol/l and, preferably, about 0.15 mol/l to 0.35 mol/1.
• pH buffer agents may be incorporated as desired.
• accelerators may be incorporated as desired.
• chelating agents may be incorporated as desired.
• pH buffer agents typically used include boric acid, borax, sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, acetic acid, and sodium acetate.
• bleach-fixing accelerators include bromine ion, iodine ion, thiourea compounds described in U. S. Patent 3,706,561, Japanese Patent Publication Nos. 8506/70 and 26586/74 and Japanese Patent Application (OPI) Nos. 32735/78, 36233/78, and 37016/78; thiol compounds described in Japanese Patent Application (OPI) Nos. 124424/78, 95631/78, 57831/78, 32736/78, 65732/78 and 52534/79 and U. S. Patent 3,893,858; heterocyclic compounds described in Japanese Patent Application (OPI) Nos.
• chelating agents include organic carboxylates, aminopolycarboxylates, alkylidenediphosphonates, aminopolyphosphonates and phosphonocarboxylates.
• ammonium ions In the bleach-fix replenisher solution used in the present invention, about 60%-100% of cation content is present as ammonium ions and, preferably, about 70%-100% consists of ammonium ions. These ammonium ions may be added as a pair salt of aminopolycarboxylic acid iron (III) complexes, sulfites or thiosulfates or may be added as ammonium hydroxide.
• the light-sensitive material after bleach-fix processing is carried out is advantageously again subjected to water wash processing.
• the second washing step is carried out at a temperature of about 5°C to 50°C and, preferably, about 15°C to 40°C for a washing time of about 50 seconds to 5 minutes.
• the second washing step may be carried out by any method, but a multistage counter current washing process wherein water runs as a counter current from the post-bath to the pre-bath is preferably used.
• the number of baths for counter current washing is typically 2 to 10 and, preferably 2 to 9.
• the washing tank may be fitted with a heater to increase the washing temperature or may be fitted with an air bubbling apparatus.
• the amount of water for washing varies widely according to the method of washing, but it is generally, in a range of about 500 ml to 50 ! and, preferably, about 1 l to 30 ! per m 2 of the light-sensitive material.
• a stabilizing step described in Japanese Patent Application (OPI) Nos. 8543/82, 132146/82, 1863/83, 34448/83, and 14834/83 may be used instead of a washing step after the bleach-fix processing step.
• the method of processing the imagewise.exposed color light-sensitive material fundamentally comprises the steps of color development, washing with water, and bleach-fixing, but the present invention is not limited to those steps, and may also advantageously include other steps, such as the following:
• the stopping bath and the stabilizing bath can be omitted. Further, the fogging bath can be omitted by adding a foggant-to the color developing bath.
• the method of processing of the present invention can be applied to processing of any conventional silver halide color photographic materials such as color negative films, color papers, color positive films or color reversal films. It is particularly preferred to apply the present method to the processing of color papers.
• the photographic emulsions used in the present invention can be prepared by processes described in P. Glafkides, Chimie et Physique Photographique, (Paul Montel Co., 1967), G.F. Duffin, Photographic Emulsion Chemistry, (Focal Press, 1966), and V.L. Zelikmann et al., Making and Coating Photographic Emulsion, (Focal Press, 1964). They may be prepared by any conventional process, including the acid process, neutral process and ammonia process. Further, to react soluble silver salts with soluble halogen salts, the single jet mixing process, the double jet mixing process and a combination of them may be used.
• any of silver bromide, silver iodobromide, silver iodochlorobrmide, silver chlorobromide and silver chloride may be used as the silver halide component.
• Formation of silver halide grains or physical ripening may be carried out in a presence of cadmium salts, zinc salts, lead salts, thallium salts, iridium salts or complex salts thereof, rhodium salts or complex salts thereof, or iron salts or complex salts thereof.
• the photographic emulsions used in the present may be spectrally sensitized with methine dyes and others.
• dyes used include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes and hemioxonol dyes.
• Particularly useful dyes are those belonging to cyanine dyes, merocyanine dyes and complex merocyanine dyes. In these dyes, any nucleus conventionally used for cyanine dyes can be utilized as a basic heterocyclic nucleus.
• sensitizing dyes may be used alone, or in combination. Combinations of such sensitizing dyes are frequently used, particularly for the purpose of supersensitization.
• the emulsions may contain dyes which do not have a spectral sensitization function themselves or substances which do not substantially absorb visible rays, but which dyes and substances show supersensitization together with the sensitizing dyes.
• gelatin is preferably used, but other known hydrophilic-colloids can also-be-used.
• the color light-sensitive materials of the present invention have generally at least one red-sensitive emulsion layer, at least one green-sensitive emulsion layer and at least one blue-sensitive emulsion layer on a base.
• the order of these layers applied is arbitrarily selected as occasion demands.
• the red-sensitive emulsion layer contains a cyan coupler
• the green-sensitive emulsion layer contains a magenta coupler
• the blue-sensitive emulsion layer contains a yellow coupler
• the hydrophilic colloid layers may also contain water soluble dyes as filter dyes or for other purposes such as the preventing irradiation.
• Typical examples of such dyes include oxonol dyes, hemioxonol dyes, styryl dyes, merocyanine dyes, cyanine dyes and azo dyes. Particularly preferred are oxonol dyes, hemioxonol dyes and merocyanine dyes.
• Known antifading agents include, for example, hydroquinone derivatives described in U. S. Patents 2,360,290, 2,418,613, 2,675,314, 2,701,197, 2,704,713, 2,710,801, 2,728,659, 2,732,300, 2,735,765, and 2,816,028 and British Patent 1,363,921; gallic acid derivatives described in U. S. Patents 3,069,262, 3,457,079; p-alkoxyphenols described -in U. S. Patents 2,735,765 and 3,698,909 and Japanese Patent Publication Nos.
• the hydrophilic colloid layers may contain ultraviolet absorbing agents, such as benzotriazole compounds substituted by aryl groups (for example, those described in U. S. Patent 3,533,794); 4-thiazolidone compounds (for example, those described in U. S. Patents 3,314,794 and 3,352,681; benzophenone compounds (for example, those described in Japanese Patent Application (O P I) No. 2784/71); cinnamic acid ester compounds (for example, those described in U. S. Patents 3,705,805 and 3,707,375); butadiene compounds (for example, those described in U. S. Patent 4,045,229); and benzoxazole compounds (for example those described in U.
• ultraviolet absorbing agents such as benzotriazole compounds substituted by aryl groups (for example, those described in U. S. Patent 3,533,794); 4-thiazolidone compounds (for example, those described in U. S. Patents 3,314,794 and 3,352,681; benzophenone compounds
• ultraviolet absorbing agents may be mordanted in any specified layer as desired.
• the photographic emulsion layers and other hydrophilic colloid layers may contain known stilbene type, triazine type, oxazole type or coumarine type whitening agents. They may be soluble in water, or water-insoluble whitening agents may be used. as a dispersion.
• the photographic emulsion layers of the photographic light-sensitive materials used in the present invention contain couplers capable of oxidative coupling with aromatic primary amine developing agents (for example, phenylenediamine derivatives or aminophenol derivatives, etc.) in the color development processing to form color dyes.
• the couplers used are not limited, and may be freely selected from those known in the art.
• magenta couplers examples include those described in U. S. Patents 2,600,788, 2,983,608, 3,062,653, 3,127,269, 3,311,476, 3,419,391, 3,519,429, 3,558,319, 3,582,322, 3,615,506, 3,834,908, 3,891,445 and 4,351,897; German Patent 1,810,464, German Patent Application (OLS) Nos. 2,408,665, 2,417,945, 2,418,959, and 2,424,467; Japanese Patent Publication No. 6031/65 and Japanese Patent Application (OPI) Nos. 20826/76, 58922/77, 129538/74, 74027/74, 159336/75, 42121/77, 74028/74, 60233/75, 26541/76, and 55122/78.
• yellow couplers benzoylacetanilide compounds and pivaloylacetanilide compounds are advantageously used.
• yellow couplers include U. S. Patents 2,875,057, 3,265,506, 3,408,194, 3,551,155, 3,582,322, 3,725,072, and 3,891,445; German Patent 1,547,868, German Patent Application (OLS) Nos. 2,219,917, 2,414, 006 , and 2,261,361; British Patent 1,425,020; Japanese Patent Publication No. 10783/76, and Japanese Patent Application (OPI) Nos. 26133/72, 73147/73, 102636/76, 6341/75, 123342/75, 130442/75, 21327/76, 87650/75, 82424/77 and 115219/77, etc.
• cyan couplers phenol compounds and naphthol compounds
• Examples of such couplers are described in U. S. Patents 2,359,929, 2,434,272, 2,474,293, 2,521,908, 2,895,826, 3,034,892, 3,311,476, 3,458,315, 3 , 47 6,563, 3,583,971, 3,591,3a3, 3,767,411, and 4,004,929; German Patent Application (OLS) Nos. 2,414,830 and 2,454,329; and Japanese Patent Application (OPI) Nos. 59838/73, 26034/76, 5055/73, 146828/76, 69624/77, 90932/77, 155533/82, and 204545/82.
• DIR couplers it is possible to use, for example, those described in U. S. Patents 3,227,554, 3,617,291, 3,632,345, 3,701,783, and 3,790,384; West German Patent Application (OLS) Nos. 2,414,006, 2,454,301, and 2,454,329; British Patent 953,454; Japanese Patent Application Nos. 69624/77 and 12335/74, and Japanese Patent Publication No. 16141/76.
• OLS West German Patent Application
• the light-sensitive materials may also contain compounds which release a development restrainer by development, other than DIR couplers.
• compounds which release a development restrainer by development other than DIR couplers.
• OLS German Patent Application
• OPI Japanese Patent Application
• Couplers may be contained in the same layer.
• the same compound may be contained in two or more layers.
• couplers are added generally in an amount of about 2 x 10 -3 mol to 5 x 10 -1 mol and, preferably, about 1 x 10 -2 mol to 5 x 10-1 mol per mol of silver in the emulsion layer.
• a processor FPRP 102 for Fuji color roll papers (produced by Fuji Photo Film Co.) was altered so as to have the following processing steps. (Each processing time includes the time for processing in each bath and the crossover time for the next bath.)
• the imagewise exposed Fuji color papers (produced by Fuji Photo Film Co.) were continuously processed in processors (A) and (B) using the above-described processing solutions under the above-described processing conditions.
• the processing amount was 50 m 2 of rolled paper. having a width of 8.25 cm per day, and the processing was repeated for 30 days.
• Fuji color papers (produced by Fuji Photo Film Co.) were exposed and processed in the.same manner as in Example 1, with the difference that the processing amount was 25 m 2 of rolled paper having a width of 8.25 cm per day, and the processing was repeated for 60 days.

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• 1983
  • 1983-07-20 JP JP13213383A patent/JPS6023857A/ja active Pending
• 1984
  • 1984-07-20 EP EP84108626A patent/EP0132806A3/en not_active Withdrawn

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