JPS6325654B2 - - Google Patents

Description

[Detailed description of the invention]

This patent relates to a method for reversal color photographic processing of silver halide color photographic materials. For more details,
The present invention relates to a reversal color photographic processing method in which water stain resistance is improved. In reversal color photographic processing, including reversal baths,
Conventionally, water scales tend to form in the reversal bath, and when the water scales adhere to the photosensitive material, the processed photosensitive material may be colored or damaged, or the processing bath in which the water scales have occurred may emit a strange odor. It was hot. In general, there are two possible causes of water stains: precipitation of processing solution components, and microorganisms such as mold that occur in the treatment bath and precipitate into water stains. It is being The latter cause is considered to be the main cause of water stains in the processing bath for reversal color photographic processing. Conventionally, in order to prevent water stains occurring in processing baths for silver halide photography, a method of adding water stain preventive agents to the processing baths has been proposed, and several compounds are known as such water stain preventive agents. ing. That is, - Aliphatic nitro alcohols (U.S. Patent No.
3542553), Hydroxyamines (Research Disclosure
17633), Formaldoximes (Research
Disclosure 17633), Cyclohexylphenol derivatives (Japanese Unexamined Patent Application Publication No. 1783-1989)
−111942), ・Chlorinated phenols (Research
Disclosure 20526), Thiadiazoles (Research Disclosure
20526), ・Quaternary ammonium compounds (Research
Disclosure 20526), ・Dialdehydes (Research Disclosure
20526) etc. However, these anti-scald agents used in photo processing baths are (1) expensive, (2) harmful to the human body, (3) less effective for some types of mold, and (4) poorly soluble. low, making it difficult to concentrate the processing liquid
(5) Currently, it has not been put into practical use due to drawbacks such as adversely affecting photographic properties. An object of the present invention is to provide a reversal color photographic processing method that does not cause problems due to the formation of water stains by processing in a processing bath containing an anti-water stain agent having the following conditions. The conditions for a water stain preventive agent are (1) It must have sufficient water stain prevention effect (2) It must have a wide range of water stain prevention effects regardless of the type of water stain (3) It must not have an adverse effect on photographic properties. (4) It must have sufficient solubility in the processing solution. (5) It must be harmless to the human body. (6) It must be inexpensive. As a result of various studies, we have determined that at least one type of silver halide color photographic material The above object could be achieved by treating with a treatment liquid containing sorbic acid or a salt thereof. Here, examples of the salt include salts made of alkali metals such as sodium, potassium, and lithium, ammonium salts, and the like. Particularly preferred among sorbic acid or its salts is potassium sorbate. The amount of these compounds added is 0.2 to 10
g/ is preferred, particularly 0.6 to 1.2 g/. The sorbic acid or its salt of the present invention can be used in any processing solution (or processing bath) used for reversal color processing. Specifically, black and white developer, reversal solution, color developer, bleach solution, fixer,
These include stabilizers, stop solutions, washing solutions, and bleach-fix solutions. It is effective to add these compounds to the treatment solution where water stains normally occur. For example, it can be added to a reversal solution (or reversal bath) where water stains are a common problem, and can effectively prevent water stains. The reversal color processing of the present invention basically consists of (1) black and white development (2) reversal (3) color development (4) bleaching (or instead of (4) and (5) (5) fixing (4)' It consists of the following steps: bleach-fixing). Here, the processing temperature in each step is generally 25 to 45°C, and the processing time is generally 10 seconds to 10 minutes. Examples of processing steps include (1) black and white development → stop → water washing → reversal → water washing → color development → stop → water washing → bleaching → water washing → fixing → water washing → stabilizing → drying, or (2) black and white development → stopping → water washing. → inversion → water washing → color development → stopping → water washing → bleaching → fixing → water washing → stabilization → drying, etc. The black and white developer used in the present invention can contain a known developing agent. As a developing agent,
dihydroxybenzenes (e.g. hydroquinone), 3-pyrazolidones (e.g. 1-phenyl-3-pyrazolidone), aminophenols (e.g. N-methyl-P-aminophenol),
1-phenyl-3-pyrazolines, ascorbic acid, and 1,2,3, as described in U.S. Pat. No. 4,067,872.
Heterocyclic compounds in which a 4-tetrahydroquinoline ring and an indolene ring are condensed can be used alone or in combination. The black and white developer used in the present invention may also include preservatives (e.g. sulfites, bisulfites, etc.), buffers (e.g. carbonates, boric acid, borates, etc.), as necessary.
alkanolamines), alkaline agents (e.g. hydroxides, carbonates), solubilizers (e.g. polyethylene glycols, esters thereof), PH regulators (e.g. organic acids such as acetic acid), sensitizers (e.g. , quaternary ammonium salt), a development accelerator, a surfactant, a toning agent, an antifoaming agent, a hardening agent, a viscosity imparting agent, and the like. The black and white developer used in the present invention further includes antifoggants (for example, halides such as potassium bromide and sodium bromide, benzotriazole, benzothiazole, tetrazole, thiazole, etc.),
Chelating agents (eg, ethylenediaminetetraacetic acid, alkali metal salts thereof, polyphosphates, nitriloacetates) can be included. The pH value of the developer thus adjusted is selected to be sufficient to provide the desired density and contrast, and is preferably in the range of about 8.5 to about 11.5. As a special embodiment of the black and white developer used in the present invention, the developing agent is contained in the photographic material (for example, in the emulsion layer).
An example of this is an activator treatment in which this is developed in an alkaline aqueous solution. The object of the present invention is also achieved in this process. The reversal bath used in the present invention can contain a known fogging agent. That is, 1 stannous ion-organic acid complex salt stannous ion-organic phosphate complex salt (U.S. Patent No.
3617282, etc.), stannous ion-organic phosphonocarboxylic acid complex salt (Japanese Patent Publication No. 56-32616, etc.), stannous ion-cyclic or chain polyphosphoric acid complex salt (Japanese Patent Publication No. 54-67430, etc.), stannous ion-aminocarboxylic acid complex salt (British Patent No. 1209050, etc.), stannous ion-citric acid complex salt (West German Patent No.
2111813, etc.), stannous ion-polyhydroxycarboxylic acid complex salts (British Patent No. 1467007, etc.), stannous ion-aliphatic amine phosphonic acid complex salts (JP-A-55-1464493, etc.), etc. di-boron compound boron hydride Compound (U.S. Patent No. 2984567,
JP-A No. 45-50565, U.S. Patent No. 4055422, etc.), heterocyclic amine borane compounds (U.S. Patent No. 4055422, etc.)
3246987, etc.), amine borane compounds (UK Patent No. 1011000,
West German Patent No. 1622261, etc.), borano carbonate compounds (West German Patent No.
1622258, etc.), cyanoborohydride compounds (West German patent no.
2642727, etc.), etc.3 Other transition metal ions such as Fe ⁺⁺ or their complex salts (West German Patent No. 2700290, etc.), carbazic acid, bicarbazic acid, or their salts (British Patent No. 47633, etc.), N-heterocyclic hydrazine compounds or their salts (Japanese Patent Application Laid-Open No. 44-10667, etc.), thiosemicarbazone compounds (West German Patent No.
2719371 etc.). The water-soluble first compound necessary to make the above organic acid complex salt
Examples of tin include stannous chloride, stannous bromide, stannous fluoride, stannous complex acid, stannous sulfate, stannous tartrate, etc., and the amount added to the reversal bath is stannous. The tin ion is preferably in the range of 10 ^-3 to 2 x 10 ^-2 mol/, more preferably in the range of 2.0 x 10 ^-3 to 1.5 x 10 ^-2 mol/. On the other hand, the following compounds are the organic acids necessary to form a complex salt with stannous. As organic phosphoric acid, the following general formula (), ()
This is a compound shown in General formula () RN (CH ₂ PO ₃ M ₂ ) ₂ General formula () RR ₁ C (PO ₃ M ₂ ) ₂ (In the formula, R and R ₁ are hydrogen atoms, alkyl groups (e.g. methyl group, ethyl group, etc.) ) etc., M
indicates a hydrogen atom, a water-soluble cation, etc. ) The organic phosphonocarboxylic acid is a compound represented by the following general formula (). General formula () (In the formula, R ₁ , R ₂ , R ₃ represent a carboxyl group, etc., and M is an alkali metal (e.g. sodium,
potassium), etc. n is 0 or 1. ) Examples of the cyclic or chain polyphosphoric acid include compounds represented by the following general formulas () and (). General formula () (MPO ₃ ) m General formula () M _o+2 PnO _3o+1 (wherein, M represents an alkali metal (e.g., sodium, potassium), etc., and m is 2 or more (preferably 6 or less) ) As an aminocarboxylic acid, the following general formula ()
This is a compound shown in General formula () (In the formula, L and R represent an alkylene group (preferably having 3 or less carbon atoms), and R ₁ and R ₂ represent an alkyl group (for example, a methyl group, an ethyl group, etc.).) Polyhydroxycarboxylic acids include the following: This is a compound represented by the general formula (). General formula () (In the formula, R ₁ and R ₂ are alkyl groups (eg, methyl group, ethyl group, etc.)) The aliphatic amine phosphonic acid is a compound represented by the following general formula (). General formula () (In the formula, R ₁ , R ₂ , R ₃ , R ₄ are hydrogen atoms, alkyl groups (e.g. methyl group, ethyl group, etc.), M
are alkali metals (sodium, potassium ^m2 )
etc. ) Among these, organic phosphonocarboxylic acids are preferred, and particularly preferred are, for example, -1 1-phosphonopropane-1,2,3-tricarboxylic acid-2 1-phosphonobutane-2,3,4-tricarboxylic acid-3 1,1-diphosphonopropane-2,3-
Dicarboxylic acid-4 2-phosphonobutane-2,3,4-tricarboxylic acid-5 2,2-diphosphonobutane-3,4-dicarboxylic acid-6 2-phosphonobutane-1,2,4-tricarboxylic acid, and the like. The amount of these chemical fogging agents added is 10 ^-3 ~ 4×
The range is preferably 10 ^-1 mol/2×10 ^-3 to 1.5
The range of x10 ^-2 mol/ is more preferable. Further, when an organic acid is used, it is desirable that the organic acid be present in an excess of 1 to 10 times the stannous ion. The PH of this reversal bath ranges over a wide range from acidic to alkaline, preferably PH2 to 12.
The range is from 2.5 to 10, particularly preferably from 3 to 9.
To adjust the pH, use acids such as hydrochloric acid, sulfuric acid, phosphoric acid, acetic acid, citric acid, tartaric acid, malic acid, or sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium carbonate, potassium carbonate, or tertiary phosphorus. Alkaline agents such as sodium acid, tribasic potassium phosphate, sodium metaporate, potassium metaporate, borax, and ammonium hydroxide may be added. Furthermore, a swelling inhibitor (for example, an inorganic salt such as Glauber's salt) can be added. Furthermore, acids, alkalis, and salts may be added to provide buffering properties, if necessary. The color developer used in the present invention has the composition of a general color developer containing an aromatic primary amine developing agent. Preferred examples of aromatic primary amine color developing agents are p-phenylenediamine derivatives as shown below. N・N-diethyl-p-phenylenediamine, 2-amino-5-diethylaminotoluene, 2-amino-5-(N-ethyl-N-laurylamino)toluene, 4-[N-ethyl-N
-(β-hydroxyethyl)amino]aniline,
2-Methyl-4-[N-ethyl-N-(β-hydroxyethyl)amino]aniline, N-ethyl-N
-(β-methanesulfamidoethyl)-3-methyl-4-aminoaniline, N-(2-amino-5-
diethylaminophenylethyl) methanesulfonamide, N.N-dimethyl-p-phenylenediamine, 4-amino-3-methyl-N-ethyl-N- described in U.S. Pat.
Methoxyethylaniline, 4-amino-3-methyl-N-ethyl-N-β-ethoxyethylaniline and 4-amino-3-methyl-N-ethyl-
Preferred representative examples include N-β-butoxyethylaniline and salts thereof (eg, sulfate, hydrochloride, sulfite, p-toluenesulfonate, etc.). The color developer may also contain other known developer component compounds. For example, alkali agents, buffering agents, etc. include caustic soda, caustic potash,
Sodium carbonate, potassium carbonate, tertiary sodium phosphate or potassium, potassium metaphosate, borax, etc. are used alone or in combination. In addition, for the purpose of providing buffering capacity, for convenience in preparation, or to increase ionic strength, it may be added to Various salts such as alkali nitrate, alkali sulfate, etc. are used. Sulfites (for example, sodium sulfite, potassium sulfite, potassium bisulfite, and sodium bisulfite) and hydroxylamine, which are commonly used as preservatives, can be added to the color developing solution. If necessary, any development accelerator can be added to the color developing solution. For example, various pyridinium compounds and other cationic compounds represented by U.S. Pat. No. 2,648,604, Japanese Patent Publication No. 44-9503, and U.S. Pat. , Special Publication No. 44-9504, U.S. Patent No. 2533990, U.S. Patent No. 2531832, U.S. Patent No. 2950970, U.S. Patent
Nonionic compounds such as polyethylene glycol and its derivatives and polythioethers described in No. 2577127, organic solvents and organic amines, ethanolamine, ethylenediamine, diethanolamine, etc. described in Japanese Patent Publication No. 44-9509 and Belgian Patent No. 682862, and Photograph by LFA Mason.
P40-43 of Processing Chemistry (Focal Press
-London-1966) can be used. In addition, benzyl alcohol and phenylethyl alcohol described in U.S. Patent No. 2515147, Journal of the Photographic Society of Japan, volume 14, page 74 (1952
pyridine, ammonia, hydrazine,
Amines and the like are also useful. Furthermore, the color developer contains ethylenediaminetetraacetic acid,
Aminopolycarboxylic acids represented by nitrilotriacetic acid, cyclohexanediaminetetraacetic acid, iminodiacetic acid, N-hydroxymethylethylenediaminetriacetic acid, diethylenetriaminepentaacetic acid, and the like can be included as water softeners. The amount added varies depending on the hardness of the water used, but it is usually used in the range of 0.5 to 1 g/min. However, if too much is added, the stability of the stannous ion will be impaired. Other calcium and magnesium pigments can also be used in the color developer. These are by J. Willems
Belgische Chemische Industrie, vol. 21, p. 325 (1956) and vol. 23, p. 1105 (1958)
(2013). Competing couplers and compensating developers can also be added to the color developer. Citrazic acid, J acid, H acid, etc. are useful as competitive couplers. For example, US Patent No. 2742832,
Special Publication No. 44-9504, No. 44-9506, No. 44-9507
No., U.S. Patent No. 3520690, U.S. Patent No. 3560212, U.S. Pat.
Compounds described in No. 3645737 and the like can be used. p-aminophenol, N- as a compensating developer
Benzyl-p-aminophenol, 1-phenyl-3-pyrazolidone, etc. can be used.
For example, the compounds described in Japanese Patent Publication Nos. 45-41475 and 46-19037 are useful. The pH of the color developer is preferably in the range of about 8-13.
The temperature of the color developing solution is selected within the range of 20°C to 70°C, preferably 30°C to 60°C. After color development, the photographic emulsion layer is usually bleached. The bleaching process may be performed simultaneously with the fixing process, or may be performed separately. Bleach agents include iron (), cobalt (), chromium (), and copper ().
Compounds of polyvalent metals such as, peracids, quinones, nitroso compounds, etc. are used. For example, ferricyanide, dichromate, organic complex salts of iron () or cobalt (), aminopolycarboxylic acids such as ethylenediaminetetraacetic acid, nitrilotriacetic acid, 1,3-diamino-2-propanoltetraacetic acid, or citric acid, tartaric acid. , complex salts of organic acids such as malic acid; persulfates, permanganates;
Nitrosophenols and the like can be used.
Of these, potassium ferricyanide, sodium ferric ethylenediaminetetraacetate, and ammonium ferric ethylenediaminetetraacetate are particularly useful. Aminopolycarboxylic acid iron() complexes are useful in both stand-alone bleach solutions and single bath bleach-fix solutions. After bleaching or bleach-fixing, US Patent 3042520
No. 3241966, Special Publication No. 1977-8506, Special Publication No. 1973
Various additives can also be added, including the bleaching accelerators described in, for example, No. 8836. In the fixing bath of the present invention, as a fixing agent, ammonium salt, sodium salt, or potassium salt of thiosulfate is used in an amount of about 30 g/~200 dl/, and in addition, a stabilizing agent such as sulfite or isomeric bisulfite is used. , hardening agents such as potash alum, PH buffering agents such as acid acetates, borates, phosphates, carbonates, etc. The pH of the fixer is 3-10, more preferably 5-9. The processing method of the present invention can be used not only in color photography methods in which a dye-forming coupler is contained in a light-sensitive material, such as the methods described in U.S. Pat. Color photography methods that include in the developer, such as U.S. Pat. No. 2,252,718, U.S. Pat.
It is also applicable to the method described in No. However, at present, the former method is mainly used. When a dye-forming coupler is included in a light-sensitive material, generally a multilayer light-sensitive material is used, and the coupler must remain in one layer and not diffuse into other layers during manufacturing, storage, and processing steps. is desirable. The color photographic processing method of the present invention is disclosed in the U.S. patent
It can also be used in diffusion transfer color photography using methods such as those described in No. 3227551 and No. 3227552.
In this case, the coupler may or needs to diffuse into other layers during the processing step. In the photographic processing method of the present invention, any known coupler can be used to form a color image. The coupler may be either 4-equivalent or 2-equivalent. It may also be a colored coupler for color correction, a colorless coupler, or a coupler that releases a development inhibitor during development (so-called DIR coupler). As the yellow coloring coupler, a known open-chain ketomethylene coupler can be used. Among these, benzoylacetanilide and pivaloylacetanilide compounds are advantageous. Specific examples of yellow couplers that can be used include the U.S. Pat.
No. 2875057, No. 3265506, No. 3408194, No.
No. 3551155, No. 3582322, No. 3725072, No.
3894875, West German Patent Publication No. 1547868, West German Patent Application (OLS) No. 2213461, OLS No. 2219917, OLS No. 2261361
No. 2263875, No. 2414006, etc. As magenta couplers, 5-pyrazolone compounds are mainly used, but indazolone compounds and cyanoacetyl compounds are also used. Examples are U.S. Patents 2,600,788, 2,983,608,
No. 3062653, No. 3127269, No. 3311476, No.
No. 3419391, No. 3476560, No. 3519429, No. 3419391, No. 3476560, No. 3519429, No.
No. 3558319, No. 3582322, No. 3615506, West German Patent No. 1810464, West German Patent Application (OLS) No. 2408665,
No. 2418959, No. 2424467, Special Publication No. 40-6031,
This is described in No. 44-2016, etc. Phenol or naphthol derivatives are mainly used as cyan couplers. Specific examples include U.S. Patent No. 2369929, U.S. Patent No. 2434272, and U.S. Patent No. 2474293.
No. 2521908, No. 2895826, No. 3034892,
No. 3311476, No. 3386830, No. 3458315, No.
No. 3476563, No. 3583971, No. 3591383, JP-A-Sho
There is one described in No. 48-78905. In addition, a development inhibitor-releasing coupler (so-called DIR coupler) or a compound that releases a development-inhibiting compound during the coloring reaction can also be added. Examples of these are U.S. Pat. No. 3,227,554;
No. 3617291, No. 3632345, No. 3701783, No. 3617291, No. 3632345, No. 3701783, No.
3790384, British Patent No. 953454, West German Patent Application (OLS) No. 2414006, OLS No. 24179145, OLS No. 2417945
No. 2454301, No. 2454329, US Patent
It is described in No. 3297445, No. 3379529, etc. Others: Patent Application No. 49-37651, No. 49-99617,
No. 49-66378, No. 49-92685, No. 49-98469,
No. 49-114445, No. 50-1792, No. 50-70592,
No. 50-96435, No. 50-118029, No. 50-118540
Couplers described in each specification of the No. 1 can also be used. Two or more types of the above-mentioned couplers and the like can be used together in the same layer in order to satisfy the characteristics required of a photosensitive material, and the same compound can of course be added to two or more different layers. These couplers are generally dispersed in the silver halide photographic emulsion layer with a solvent of appropriate polarity. Useful solvents include tri-o-cresyl phosphate, trihexyl phosphate,
These include dioctyl butyl phosphate, di-butyl phthalate, diethyl laurylamide, 2,4-diallylphenol, octyl benzoate, and the like. The color light-sensitive material to be photographically processed by the method of the present invention has at least one silver halide emulsion layer on a support, and usually has a red-sensitive silver halide emulsion layer, a green-sensitive halogen emulsion layer, and a green-sensitive silver halide emulsion layer on the support. It has a silver oxide emulsion layer and a blue-sensitive silver halide emulsion layer. Usually, a red-sensitive silver halide emulsion layer containing a cyan image-forming coupler, a green-sensitive silver halide emulsion layer containing a magenta image-forming coupler, and a blue-sensitive silver halide emulsion layer containing a yellow image-forming coupler are formed on a support. Each layer has at least one layer. Such photographic elements may include non-light-sensitive photographic layers (e.g., anti-halation layers, intermediate layers to prevent color mixing, etc., yellow filter layers, protective layers,
etc.) may be included. Furthermore, there is no restriction on the arrangement order of the red-sensitive layer, the green-sensitive layer, and the blue-sensitive layer. The color light-sensitive material photographically processed by the method of the present invention may contain any of silver bromide, silver chloride, silver chlorobromide, silver iodobromide, and silver iodochloride as silver halide in the photographic emulsion layer. good. When having two or more photographic emulsion layers, a combination of two or more of these may be used. Photographic emulsions can be prepared by known methods, e.g.
Chimie Photographique (Paul
It can be prepared by the method described in Montel, 1967).
It may be produced by any of the ammonia method, neutral method, acidic method; single jet method, back mixing method, double jet method, controlled double jet method, etc. The crystal forms of these silver halide grains are cubic,
Any octahedral or mixed crystal form is acceptable. EXAMPLES The present invention will be specifically explained below with reference to Examples. Example 1 In carrying out the present invention, the following silver halide color photographic materials and reversal color photographic processing were used to examine photographic properties. For silver halide color photographic materials, 1-hydroxy-4-chloro-2-
n-dodecylnaphthamide was emulsified and mixed, and 1-(2',4',6'-trichlorophenyl)-3- was added as a magenta coupler to a green-sensitive silver iodobromide emulsion (silver iodide 6 mol%). [3″-(2,4-di-t-amylphenoxyacetamide)benzamide]-5-pyrazolone was emulsified and mixed with a blue-sensitive silver iodobromide emulsion (silver iodide 6 mol%). As a yellow coupler, α-pivaloyl-α-[4-(4-benzyloxysulfonyl)phenoxy]-2-chloro-
5-[γ-(2,4-di-ε-amylphenoxy)
A color photographic material was prepared by emulsifying and mixing butylamide]acetanilide and sequentially coating the mixture on a cellulose triacetate film. For emulsification of each coupler, dibutyl phthalate and tricresyl phosphate were used as coupler solvents, sorbitan monolaurate and sodium dodecylbenzenesulfonate were used as emulsifiers, and 1-(p-nonylphenoxytrifluoride) was used as an emulsifier. Sodium oxyethylene)butane-4-sulfonate and lauric acid ester of sucrose were added as coating aids. The sample contained a yellow colloidal silver filter layer between the green-sensitive emulsion layer and the blue-sensitive emulsion layer, and di-t-amylhydroquinone dispersed between the green-sensitive emulsion layer and the red-sensitive emulsion layer. An intermediate layer made of gelatin is provided, and a protective layer mainly made of gelatin is provided on the blue-sensitive emulsion layer. This film was exposed to light through a light wedge and then subjected to the following processing. First development (black and white) 30℃ 5 minutes Stop solution 〃 1〃 Water washing 〃 2〃 Reversal bath 〃 2〃 Color development 〃 7〃 Stop solution 〃 2〃 Hardening bath 〃 2〃 Water washing 30℃ 2 minutes Bleaching bath 〃 4. Water washing 2. Fixing bath 4. Water washing 2. Drying First developer Sodium sulfite 60g 1-phenyl-3-pyrazolidone 0.3g Hydroquinone 5.0g Sodium carbonate monohydrate 41g Potassium bromide 2.0 g Potassium iodide (1% aqueous solution) 1.0ml Rodan potassium (1N aqueous solution) 10ml Sodium hydroxide (10% aqueous solution) Add 2.0ml water 1 Stop solution Sodium acetate 30g Glacial acetic acid 8ml Add water 1

[Table] Color developer Benzyl alcohol 5ml Sodium hydroxide 0.5g Diethylene glycol 3ml Sodium hexametaphosphate 2g Sodium sulfite 2g Potassium bromide 2g 4-Amino-3-methyl-N-ethyl-β-hydroxyethylaniline sesquisulfate monohydrate 5g Citrazic acid 0.4g Metaboric acid 0.5g Nutbocus 77g Add water 1 Hardening bath Sodium hexametaphosphate 1g Borax pentahydrate 20g Formalin (37%) 10ml Bleach solution Sodium iron () ethylenediaminetetraacetate dihydrate 30g Potassium bromide 50g Disodium ethylenediaminetetraacetate 5g Boric acid 3g Add water 1 Fixer Sodium thiosulfate 150g Sodium sulfite 15g Add water 1 Examine the photographic performance of the sample obtained by the above development process. The results are shown in Table 1. The photographic performance was evaluated by measuring the maximum color density of the blue-sensitive emulsion layer of the processed light-sensitive materials using a Macbeth densitometer and comparing them. In addition, in order to investigate the effectiveness of inversion baths with the compositions A to F in preventing water stains, tooth seeds were collected from the inversion baths where water scales had occurred, and one drop of water stain was added to 50 ml of each inversion bath using a dropper. In addition to gelatin
9.0 mg/incubation was added and cultured at 30°C for 20 days, and the occurrence of water stains, especially microorganisms such as mold in this case, was examined. The results obtained are shown in Table 1.

【table】

[Table] 〓 Significant occurrence 〓

Claims (1)

[Claims] 1. A reversal color photographic processing method, which comprises processing a silver halide color photographic material with a processing solution containing at least one kind of sorbic acid or its salt.