JPS60235135A - Treatment of silver halide color photographic sensitive material - Google Patents

Abstract

PURPOSE:To enable high-speed bleaching low in toxicity and to obtain good image quality by incorporating a specified compd. in a processing soln. contg. a metal complex salt or persulfuric acid to be used for bleach-fixing or bleaching which is operated in succession to color development processing. CONSTITUTION:After color developing an imagewisely exposed silver halide color photographic sensitive material, it is treated in a process including steps contg. a metal salt of org. acid or persulfuric acid and having bleaching ability, and at least one of such steps contains at least one of compds. represented by the formula R1-S-S-R2 in which R1, R2 are each -COOM, -SO3M, -CONRR', or -SO2NRR'; M is H or a metal atom; and R, R' are each H, alkyl, aryl sulfo, or aryl sulfonyl. The addition of such a compd. to a bleaching soln. or bleach-fixing soln. or their pretreatment soln. can exhibit superior acceleration effect. This bleaching acceleration effect is not lowered by adding the color developing soln. attached to the material to be processed, and further, even if it is used in a large amt., it does not hinder fixing, and does not cause fog.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for processing a silver halide color photographic light-sensitive material (hereinafter referred to as a color photographic light-sensitive material) in which a silver halide color photographic light-sensitive material that has been exposed to light is developed, bleached and fixed. The present invention relates to a color photographic processing method (referred to as a photographic processing method), and particularly to a color photographic processing method involving a bleaching action.

(Prior Art) Generally, in order to obtain a color image by developing a silver halide color photographic material that has been exposed to light, after the color development step, the undeveloped silver image is bleached with an oxidizing agent (bleaching agent).
Next, a step of fixing with a fixing agent is performed. In contrast to such a method in which bleaching and fixing are performed in separate processing steps, the processing steps are simplified for the purpose of speeding up processing and saving labor, and the process is called self-fixing, in which bleaching and fixing are completed simultaneously in one step. A processing method has been proposed.

On the other hand, bleaching agents using ferric ferric powder have a very low pH and extremely high oxidizing power, resulting in browning (this is convenient for whites, but the parts of the processing machine that houses it are likely to rot). It has the disadvantage that it is easily washed with water, and also has the disadvantage that iron hydroxide is precipitated in the emulsion layer in the water washing step after cleaning, resulting in staining.

Compared to these bleaching agents, metal complex salts and persulfates, such as iron ethylene diacetate complex salts, are less toxic and disadvantageous in terms of pollution control, so their use as bleaching agents has been recommended in recent years. The oxidizing power is relatively small, so the white blade is insufficient, especially when processing the silver halide color of a highly sensitive I skin that has undergone color sensitization using a legal culture silver emulsion as a living body. In this case, the bleaching action is insufficient, the scissors removal is poor, and the bleaching or bleach-fixing efficiency is low, making it difficult to achieve the purpose.

In order to prevent pollution, it is desirable to use a metal complex salt of an organic acid or a persulfate as a bleaching agent, but as mentioned above, this results in a lack of coolness, so this point has to be solved. Otherwise, the purpose of 1) "quickly disposing of high-sensitivity color photolithographic dyes" cannot be achieved.

Conventionally, it has been proposed to add various bleaching accelerators to bleaching solutions or bleaching solutions using metal complex salts of macerated acids such as ethylenediaminetetraacetic acid iron complexes as a bleaching agent as a means of improving the whitening ability of the solutions. has been done. Such bleaching accelerators include, for example, thiourea derivatives as described in Japanese Patent Publication No. 8506/1983, selenourea fatty conductors as described in Japanese Patent Application Publication No. 1982-280, and British Patent No. 1,138.
, 5-membered ring mercapto compounds as described in Japanese Patent Publication No. 842, aliphatic amines as described in Japanese Patent Publication No. 46-556, or thiourea derivatives as described in Swiss Patent No. 336,257. , thiazole derivatives, thiadiazole derivatives, etc.

In addition, the bleaching ability of bleaching solutions that use persulfate as a cleaning agent is increased by +j.
As a bleaching accelerator, for example, U.S. Patent No. 3,77
Aminated adducts described in 2020, No. 3,893,858 and Research, Disclosure Nα15704 are known.

However, many of these bleach accelerators do not necessarily exhibit a bleaching accelerating effect that satisfies the optical spectrum, and even if they have an effect of accelerating mountain opening, they lack stability in the treatment solution, so the effectiveness of the treatment solution is limited. If it is a cure for the short lifespan and cannot withstand long-term storage, or if it is dissolved in the seal pre-treatment liquid used in the process before treatment with bleaching liquid or Shihaku Teitaki liquid, it is considered a breakthrough. Many of them have drawbacks such as the inability to obtain a promoting effect.

OBJECTS OF THE INVENTION The first object of the present invention is to provide a color photographic processing method that is low in toxicity, meets the requirements of pollution control, and has an excellent bleaching speed.

A second object of the present invention is to provide a color photographic processing method using a bleaching accelerator that can increase the opening speed in cleaning processing or bleaching book processing using a metal complex salt of an organic acid as a cleaning agent.

A third object of the present invention is to provide a bleaching solution that, when incorporated in a bleaching solution or bleach fixing solution, can increase the cleaning speed and provide a highly stable processing solution. An object of the present invention is to provide a color photographic processing method using an accelerator.

A fourth object of the present invention is to improve the opening speed even when the opening solution is included in the pretreatment solution used in the step before processing with a bleach-fix solution. An object of the present invention is to provide a color photographic processing method using an accelerator.

A fifth object of the present invention is to provide a bleach-fixing accelerator that can reduce the bleach-fixing speed and shorten the processing time, and obtain color photographic images of good quality, especially in color photographic processing methods that include a bleach-fixing step. An object of the present invention is to provide a color photographic processing method using the present invention.

(Structure of the Invention) The object of the present invention is to treat an imagewise exposed silver halide color photographic light-sensitive material with a color developing solution, and then remove the bleaching ability of the silver halide color photographic material containing a metal complex salt or persulfate of an organic acid. In the processing method of a silver halide color photographic processing method, which is followed by a step including a processing step with a processing liquid having the following general formula [■] in at least one processing liquid in the subsequent step: This is achieved by a method for processing a silver halide color photographic light-sensitive material, which is characterized in that it contains at least one type of compound.

General formula [I] represents an alkyl group, an aryl group, or a cycloalkyl group containing at least one selected from RIS S R2 (represents an aryl group, an arylsulfo group, or an arylsulfonyl group).

Each of R1 and R2 may be further substituted with an alkoxy group, a heterocyclic group, an aryl group, a hydroxy group, or a nitro group. When R1 and R2 represent an aryl group or a cycloalkyl group, RIXR2 may be substituted with an alkyl group having 1 to 6 carbon atoms.

It is preferable to have one or two of them. Naturally, these are 1000M or 1805M, and more preferred are 100OH or -8O3H.

The alkyl group represented by RXR' has 1 to 1 carbon atoms.
Preferably 8 pieces. The arylsulfo group represented by RXR' is a phenylsulfo group, an arylsulfonyl group, a haphenylsulfonyl group -/) E Preference 0 Next, specific representative examples used in the present invention are listed. The compounds used are not limited to these.

Exemplary compound (1) HOOCH2CCH2C00H (2) (3) HOOCH2CS S CH2C0OH8- HoOCC00H N-a03S 5O3Na HOOCCH2, CH2C00H HsC-CH2CH2CHa -9= CHs ' CH3 ○ Of the above compounds of the present invention The synthesis method is known, Oxidation of the corresponding mercaptan or equivalent t y +
Salt + 7) Synthesizing by oxidation 2> (Te!!le.

The details are based on the method described in Japanese Patent Publication No. 56-46585.

In the present invention, a color photographic image is obtained by subjecting the exposed silver halide color photographic material to photographic processing including the steps of developing, bleaching and fixing. Bleaching and fixing may be carried out in independent steps, or both may be carried out in one step using a bleach-fix solution.

The compound of the present invention is not only contained in a bleaching solution or a bleach-fixing solution, but also in a so-called pre-treatment solution, which is a solution used in a step before a processing step using a bleaching solution or a bleach-fixing solution. In this case, the pretreatment liquid refers to a treatment liquid after a developing step and before a bleaching solution or a bleach-fixing solution. The pretreatment solution is usually used immediately before the treatment step with a bleach solution or bleach-fix solution, but
It does not necessarily have to be immediately before, and another processing solution may be interposed between the pretreatment solution and the whitening solution or the bleach-fixing solution. When a bleaching or bleach-fixing step is performed immediately following the developing step, the desired bleaching accelerating effect cannot be obtained even if the compound of the present invention is contained only in the developer. The compound of the present invention may be contained in a bleach solution or a bleach-fix solution or a pretreatment solution thereof, or may be included in both a bleach solution or a bleach-fix solution and a pretreatment solution. good. That is, a desirable bleaching accelerating effect can be obtained in any of these addition modes. The amount of the compound of the present invention to be added to these solutions varies depending on the type of processing solution, the type of photographic material to be processed, the processing temperature, the time required for the intended processing, etc. Liquid xt@p approx. 0
Good results can be obtained in the range of ,01 to 150v. However, in general, when the amount added is small, the bleaching promotion effect is small;
In addition, if the amount added is too much than necessary, precipitation may occur and contaminate the photographic material being processed, so it is preferable to determine the optimum range for the amount added depending on each individual case.

When adding the compound of the present invention to a treatment solution, it is generally dissolved in water or an aqueous solution of an alkali, organic acid, etc. beforehand, but if necessary, it can be dissolved in an organic solvent. Even if it is added, its bleaching promoting effect is not affected in any way.

The metal complex salt of an organic acid used as a bleaching agent in the bleaching solution or bleach-fixing solution used in the bleaching process of the present invention oxidizes metallic silver produced by development and converts it into silver halide, and at the same time develops color. It has the effect of coloring the uncolored areas of the agent, and its structure is made by coordinating gold bullion ions such as iron, cobalt, and copper with aminopolycarboxylic acid, acid, and organic acids such as citric acid. The most preferred organic acid used to form such a metal complex salt of an organic acid is, for example, an aminopolycarboxylic acid represented by the following general formula [11] or (IID).

General formula (II) HOOCAI Z A2 C00H General formula [■] In each of the above general formulas, AI, A2, N, N, N and A
8 is a substituted or unsubstituted hydrocarbon group, Z is a hydrocarbon group, an oxygen atom, a sulfur atom, or; NA.

(A7 represents a hydrocarbon group or lower fatty acid carboxylic acid).

These aminopolycarboxylic acids may be alkali metal-based, ammonium-based or water-soluble amine salts. Representative examples of the aminopolycarboxylic acid represented by the general formula (II) or [■] or other aminopolycarboxylic acids include the following.

Ethylenediaminetetraacetic aciddiethylenetriaminepentaacetic acidethylenediamine-N-(β-oxyethyl)-N,
N',N'-Triacetic acid propylene diamine tetraacetic acid nitrotriacetic acid cyclohexane diamine tetraacetic acid iminodiacetic acid dihydroxyethylglycine ethyl ether diamine tetraacetic acid glycol ether diamine tetraacetic acid ethylene diamine tetrapropionate phenylene diamine tetraacetic acid ethylene diamine tetraacetic acid disodium salt ethylene diamine tetraacetic acid Tetra(trimethylammonium) salt ethylenediaminetetraacetate tetrasodium diethylenetriaminepentaacetic acid pentasodium salt, ethylenediamine-N-(β-oxyethyl)-N,N',
N'-triacetic acid sodium salt propylene diamine tetraacetic acid sodium salt nitrilotriacetic acid sodium salt cyclohexane diamine tetraacetic acid sodium salt
The persulfate used as a whitening agent in the bleaching solution of the present invention is an alkali metal persulfate such as potassium persulfate or sodium persulfate, or ammonium persulfate.

The bleaching solution used in the present invention contains the above-described metal complex salt or persulfate of an organic acid as a bleaching agent, and may also contain various additives. As additives, it is particularly desirable to include rehalogenating agents such as alkali halides or ammonium halides, such as potassium bromide, sodium bromide, sodium chloride, and 16-ammonium bromide.

Also, the pH of borates, acid salts, acetate rings, carbonate groups, phosphates, etc.
Buffers, aminopolycarboxylic acids or their bases, alkylamines, polyethylene oxides, and other substances known to be added to ordinary whitening solutions can be added as appropriate.

In the present invention, when the bleaching step is carried out using a bleach-fix solution, the bleach-fix solution contains a metal complex salt (for example, an iron complex salt) or a persulfate of the above-mentioned organic acid as a bleaching agent, and also contains thiosulfate, thiosulfate, A liquid having a composition containing a silver halide fixing agent such as thiocyanate or thioureas is applied. In addition, in addition to bleach and the above-mentioned silver halide fixer, there are also bleach-fix solutions containing a small amount of a halogen compound such as potassium bromide, or conversely, compositions containing a large amount of a halogen compound such as potassium bromide. A bleach-fix solution consisting of
Furthermore, a special bleach-fix solution having a composition consisting of a combination of a bleaching agent and a large amount of a halogen compound such as potassium bromide may also be used. In addition to potassium bromide, hydrochloric acid, hydrobromic acid, lithium bromide, sodium bromide, ammonium bromide, potassium iodide, and ammonium iodide can also be used as the halogen compound described in item 17 above. can.

The silver halide fixing agent contained in the white fixing solution and the compounds that react with silver halide to form water-soluble complex salts, such as potassium thiosulfate and thiosulfate, are used in conventional fixing processes. Typical examples include thiosulfates such as sodium, thioah ammonium, thiocyanates such as potassium thiocyanate, sodium thiocyanate, and ammonium thiocyanate, thiourea, thioether, and high concentrations of bromide and iodide. .

As with the whitening solution, the whitening fixer contains boric acid, borax,
pH buffering agents consisting of various salts such as IJium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, acetic acid, sodium acetate, ammonium hydroxide, etc. alone or in combination. A combination of the above may be contained. Furthermore, various fluorescent brighteners, antifoaming agents, or surfactants can also be contained. Also, hydroxylamine, hydrazine,
Preservatives such as bisulfite adducts of aldehyde compounds, organic chelating agents such as aminopolycarboxylic acids, or stabilizers such as nitroalcohol acid salts, organic solvents such as methanol, dimethylformamide, dimethyl sulfoxide, etc. etc. can be contained as appropriate.

The black and white developer used in the development process of the present invention is the black and white developer used in the processing of color photographic photosensitive materials.
It is called a developer or is used for processing black-and-white photographic materials, and can contain various well-known additives that are generally added to black-and-white developers.

Typical additives include developer chemicals such as 1-phenyl-3-pyrazolidone, metol and hydroquinone;
Preservatives such as sulfites, accelerators consisting of alkalis such as sodium hydroxide, sodium carbonate, potassium carbonate, inorganic or organic inhibitors such as potassium bromide, 2-methylbenzimidazole, methylbenzthiazole, etc. Agents, water softeners such as polyphosphates, and surface-restricting water softeners made of trace amounts of iodides and mercapto compounds can be mentioned.

The first aromatic amine color developer used in the color developer in the present invention includes known ones that are widely used in various color photographic processes. These developers include aminoenol and p-phenylenediamine derivatives. Since these compounds are more multistable than the free state, they are generally used in the form of salts, such as hydrochloride, sulfate or paratoluenesulfonate. Additionally, these compounds are generally used at a concentration of from about 0.1 f to about 3 Or per ton of color developer, more preferably from about 1 f to about 15 f per ton of color developer.

Examples of aminophenol-based developers include 0-7 minophenol, p-aminephenol, and 5-amino-2-
These include oxy-toluene, 2-amino-3-oxy-toluene, 2-oxy-3-amino-20--1,4-dimethyl-benzene, and the like.

A particularly useful primary aromatic amine color developer is N.

In the N-dialkyl-p-phenylenediamine compound, the υalkyl group and the phenyl group may be substituted or unsubstituted.

Among them, examples of particularly useful compounds include N,N-diethyl-p-phenylenediamine hydrochloride [, N-methyl-
p-phenylenediamine hydrochloride, N,N-dimethyl-p
-phenylenediamine hydrochloride, 2-amino-5-(N-
Ethyl-N-dodecylamino)-toluene, N-ethyl-N-β-methanesulfonamidoethyl-3-methyl-
4-Aminoaniline Wt acid m, N-ethyl-N-β-hydroxyethylaminoaniline, 4-amino-3-methyl-N.

N-diethylaniline, 4-amino-N-(2-methoxyethyl)-N=ethyl-3-methylaniline-p-)
Examples include luenesulfonate.

In addition to the first aromatic amine color developer, the alkaline color developer used in the present invention further contains glaze components that are usually added to color developers, such as sodium hydroxide, I) Rum, alkaline agents such as potassium carbonate, alkali metal sulfites, alkali metal bisulfites, alkali metal thiocyanates,
Alkali metal halides, benzyl alcohol, water softeners, 'a thickening agents, and the like may optionally be included. The pH value of this color developing solution is usually 7 or higher, most commonly about 9.5 to about 13. According to the present invention, the silver halide color photographic light-sensitive material processed in the presence of the compound of the present invention can be prepared by using a known color photographic light-sensitive material, preferably a multilayer negative-working color photographic light-sensitive material containing a coupler. can be used particularly advantageously when processing color print photographic materials or when processing color photographic materials made for reversal color, and also for color X-ray photographic materials, single-layer special Color photographic materials can also be processed. Alternatively, there is no problem in processing the coupler in the presence of the developer.

The silver halide color photographic light-sensitive material applicable to the present invention uses an internal development method (for example, U.S. Pat. No. 2,376,679, U.S. Pat. No. 2,801.1
71, etc.), as well as external development methods in which a color former is contained in the developer (for example, U.S. Pat. No. 252.718, U.S. Pat. ) may be used. Further, as the coloring agent, any coloring agent generally known in the industry can be used.

For example, cyan color formers are based on a naphthol or phenol structure and form indoaniline dyes through coupling, magenta color formers have a 5-pyrazolone ring with an active methylene group as a backbone structure, and yellow color formers have may have a benzoylacedoanilide, pivalylacetanilide, or acylacedoanilide structure having an active methylene chain, and may or may not have a substituent at the coupling position. In this way, as a coloring agent,
Both so-called 2-equivalent couplers and 4-equivalent couplers can be applied.

Silver halide emulsions that can be used include Jikabutsu, silver bromide,
Any silver iodide such as silver iodide, silver chlorobromide, agglomerated silver, silver iodobromide, and silver chloroiodobromide may be used. In particular, the effects of the present invention are fully exhibited in the case of iodobromide button and silver chloroiodobromide. In addition, as protective colloids for silver halide, natural products such as gelatin, as well as various products obtained by synthesis can be used. The silver halide emulsion may contain conventional photographic additives such as stabilizers, sensitizers, hardeners, sensitizing dyes, and surfactants.

When the compound of the present invention is contained in a pre-bath of a bleach or bleach-fix solution, a pre-bath having a glaze-like composition can be used. The prebath with the simplest composition is an aqueous solution in which the compound of the present invention is simply dissolved, but it may also contain acids such as acetic acid or boric acid, alkalis such as sodium hydroxide, or sodium sulfite, sodium acetate, sodium thiosulfate, or sodium borate. An aqueous solution appropriately containing salts such as , sodium carbonate, and sodium bicarbonate can also be advantageously used as the pretreatment liquid. The pH of the pre-treatment liquid can be any value24-, and the effects of the present invention can be effectively achieved in either case, but staining may occur if the pH is high during stirring. Therefore, it is generally preferable to use it at a pH of 12 or less. The pretreatment liquid may also contain, if necessary, a suspending agent made of various chelate compounds, a hardening agent made of various compounds including alum and aldehyde compounds, a pH buffering agent, halogen salts, etc. Fixing agents, antioxidants such as sulfites, hydroxylamine and hydrazine, anti-swelling agents such as sodium sulfate and magnesium sulfate,
A surfactant or the like can be contained.

For example, washing with water, stopping treatment, stopping and fixing treatment, etc. can be interposed between the pretreatment solution and the bleaching solution or bleach-fixing solution, but even in such cases, the compound of the present invention may be added to the pretreatment solution. When added, a similar bleaching promoting effect can be obtained. However, when the compound of the present invention is contained only in the pretreatment solution, it is preferable that the pretreatment solution be used in the step immediately before the bleaching solution or bleach-fixing solution.

25- When the compound of the present invention is contained in a bleach solution or a bleach-fix solution, and treatment with these processing solutions is performed immediately following the color development step, the compound of the present invention can be used in a color development solution by carry-in like a conventional bleach accelerator. The bleaching promotion effect does not decrease due to the contamination of the bleaching agent. Furthermore, even when the compound of the present invention is used in a relatively large amount, it does not cause fixing inhibition and no capri formation is observed.

(Examples) Next, the present invention will be illustrated by Examples, but the embodiments of the present invention are not limited thereto.

Example 1 An antihalation layer and a gelatin layer are provided on a triacetate film base, and a red-sensitive halide emulsion layer, a green-sensitive silver halide emulsion layer, a filter layer containing yellow colloidal silver, and a blue-sensitive silver halide emulsion are formed thereon. The layers were coated to give a total silver content of 92 silver per 100 cr/i. At this time, α-(4-nitrophenoxy)-α-pivalyl 5 was used as a yellow coupler in the blue-sensitive halogenated emulsion layer.
-[γ-(2,4-di-t-amylphenoxy)butyramide]-2-chloroacetanilide was used as a magenta coupler in the edge-sensitive silver halide emulsion layer.
,4,6-)licrodayphenyl)-3-((α-(2,
4-di-t-amylphenoxy)-acetamido]benzamide)-5-pyrazolone and 1-(2,4,
Red-sensitive silver halide using 6-)lichlorophenyl)-3-1[α-(2,4-di-t-amylphenoxy)acetamide]benzamide]-4-(4-methoxyphenylazo)-5-pyrazolone In the emulsion layer, 1-hydroxy-N-(α-(2,4-t-amylphenoxy)butyl)-2-naphthamide was used as a cyan coupler, and in each emulsion layer, a sensitized colored thread, a hardener, and a spreading agent were used. The thus obtained silver halide color negative light-sensitive material, to which ordinary additives such as additives were added, was used as a sample. The color temperature of this sample was adjusted to 49% by using a filter using a tungsten light source.
After adjusting the temperature to 00°K and irradiating a certain amount of light, the following treatment was performed.

Processing process Processing time Color development 3 minutes 15 seconds Mohaku fixation 1 minute to 30 minutes Wash with water for 2 minutes Anonymous 1st Duke Drying Each treatment used a treatment solution prepared according to the following formulation.

The processing temperature is 38°C.

[Color developer]

28- [Stabilizing solution] As the bleach-fixing solution, a processing solution with the following formulation is used. Among these, bleach-fixing solution (A) or C) is a bleach-fixing solution for comparative processing that is not based on the present invention. (D) to G) are bleach-fix solutions containing the compound of the present invention.

Next, the composition of each bleach-fix solution used is shown.

Bleach-fix solution 29 - The completion time of desilvering of films treated with the above bleach-fix solution at 38° C. for 30 minutes was compared.

Table 1 As is clear from Table 1, the bleach-fix solution using ethylenediaminetetraacetate iron (Ill) ammonium complex salt as a bleaching agent shows no significant improvement even with the addition of conventionally known accelerators. However, when the compound of the present invention is added, desilvering can be completed in a short time.

Example 2 The same sample used in Example 1 was treated according to the same treatment steps. However, the following bleach-fix solution was used.

Bleach-fix solution The desilvering completion time of films processed with the above bleach-fix solution was compared.

Table 2 As is clear from Table 2, there are bleach-fix solutions that use diethylenetriaminepentaacetate iron (I[l) complex salt as a bleaching agent; (Example 1) Although it itself has a high oxidizing power, conventionally known accelerators do not have an effect of accelerating bleaching. However, when the compound of the present invention was added, a remarkable whitening promotion effect was observed.

Example 3 The same sample used in Example 1 was treated according to the following treatment steps.

Processing process Processing time Color development 3 minutes pre-treatment 2 minutes open fixing 1 minute to 30 minutes Washing with water 2 minutes stable 1 minute drying Note that the color developer used was the same as that used in Example-1, and the bleach-fix solution was The pretreatment bath using the bleach-fix solution of Example-1 and the bleach-fix solution of Example-2 had the following composition.

When 1 part of the compound of the present invention and the comparative compound added to the bleach-fix solution in Example 1 were added to the above pretreatment solution at 21 parts per part, the comparative compound did not have any effect, but the present invention showed no effect. Examples 1 and 2 when the compound of the invention is added
The same promoting effect was obtained when it was added to the iron white fixer.

Example-4 The same sample used in Example-1 was treated with a tungsten light source, and the color density was adjusted to 4900°K using a filter.
After a certain amount of exposure, the following processing was performed.

Processing process Processing time Color development 3 minutes 15 seconds Bleaching 1 minute to 6 minutes 30 seconds Water washing 2 minutes fixation 6 minutes 30 seconds Water washing 3 minutes stabilization 1 minute drying In each process, color development and stabilization are as follows: The processing solution used in Example 1 was used for bleaching and fixing using a processing solution with the following formulation.

Fixer To the above bleaching solution were added the bleaching accelerator of the present invention and comparative compounds shown in Table 3. Addition amount is 1 for each, Q2
F, and the desilvering completion time of the processed films was compared.

Table 3 As is clear from Table 3, even if a conventionally known bleach accelerator is added to a bleaching solution containing ethylenediaminetetraacetate iron (m) complex salt as a bleaching agent, the bleaching speed will not be accelerated by much. The addition of the compound according to the present invention, although small, greatly promoted the effect.

Note that the compound of the present invention was not used in a bleach bath, but in Example-3.
A similar effect was obtained when a pretreatment bath with the same composition as that used was prepared and the compound was added thereto.

36- Example-5 The same sample used in Example-1 was treated with a tungsten light source, and the p color temperature was adjusted to 49000K with a filter.
After a certain amount of exposure, the following processing was performed.

Processing process Processing time Color development 3 minutes Pretreatment 2 minutes Standard white 1 minute to 20 minutes Fixation 8 minutes Washing 2 minutes Stabilization 1 revolution Drying Each treatment was carried out at 38°C. Color development, fixing and stabilization were carried out at 38°C. The same treatment solution used in Example 4 was used, the same treatment solution used in Example 3 was used as the pretreatment solution, and the compounds of the present invention and comparative compounds shown in Table 4 were added, but the bleaching solution was The following formulation was used.

Bleaching solution formulation: Ammonium persulfate 409 37 - The time required to complete bleaching of the film in each treatment was measured and shown in Table 4. The whitening treatment time was shown and the bleaching accelerating effect of the pre-bath was compared.

Fourth Closure As is clear from the fourth paragraph above, when a pretreatment liquid that does not contain the compound of the present invention is used, desilvering takes a long time, but by using a pretreatment liquid containing the compound of the present invention, desilvering takes a long time. It can be processed in a short time.

Agent Patent Attorney No 1) Parent-in-law

Claims (1)

[Scope of Claims] After processing the imagewise exposed silver halide color photosensitive material with a color developing solution, Subsequently, a process including a processing step of...silver rokenide color, while a negative sensitization process is carried out.
A silver halide color characterized in that at least one of the processing solutions in the subsequent step contains at least one compound represented by the following general formula [I]. How to process photos. General formula CI) R+ S S R2 , R. represents an alkyl group, an aryl group, or a cycloalkyl group having at least one selected from the group consisting of: ]