JP2696266B2 - Processing method of silver halide photosensitive material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for processing a silver halide light-sensitive material after exposure (hereinafter, may be abbreviated as a light-sensitive material or a light-sensitive material).

<Prior art> A black-and-white photosensitive material is processed by processes such as black-and-white development, fixing and washing with water after exposure, and a color photosensitive material is processed by processes such as color development, desilvering, washing and stabilization after exposure. You.

Black-and-white developer for black-and-white development, fixer for fixation, color (color) developer for color development, bleaching solution, bleach-fixer, fixer for desilvering, tap water or ion-exchanged water for washing,
A stabilizing solution is used for the stabilizing treatment.

The temperature of each processing solution is usually adjusted to 30 to 40 ° C., and the photosensitive material is immersed in these processing solutions for processing.

Such processing is usually performed by using a processing apparatus such as an automatic developing machine and transporting the photosensitive material between processing tanks filled with processing solutions in accordance with the processing steps.

In this case, a conveying roller is mainly used as a means for conveying the photosensitive material into the processing solution in the processing tank or from the processing tank to the processing tank.

Although such a transport roller may be made of metal, it is often made of resin, and in particular, at least the surface is often made of resin.

Therefore, in the case of a roller having at least a surface made of resin, since the roller surface is hydrophobic, dirt such as tar or other water-insoluble matter easily adheres.

Further, tar and the like also adhere to a roller made of metal such as stainless steel.

Further, a so-called sock roller in which the surface of a metal or resin roller is covered with a cloth is also used, but even with this, adhesion of tar or the like cannot be avoided.

The above-mentioned tar and the like are a dimer formed by polymerizing an oxidized form of a developing agent generated in a development processing step,
It is considered to be a multimer such as a trimer.

The production of such multimers is particularly remarkable in the low-replenishment type treatment which has been increasing in recent years.

In addition, in the processing of color photographic materials, oxidized form of the color developing agent is brought in not only in the developing solution but also in a processing step having a bleaching ability such as a bleaching step which is a step subsequent to the color developing step in the processing of the color photographic material. And may be formed even in this bath.

If such tar or the like adheres to the surface of the roller, it adheres to the surface of the light-sensitive material during transport to cause processing dirt.

For this reason, in order to remove tar and the like, it is necessary to periodically perform cleaning using an acid solution such as hydrochloric acid and the like using hot water or the like during the suspension of processing, and then perform maintenance. Is complicated.

<Problems to be Solved by the Invention> An object of the present invention is to provide a method for processing a silver halide photosensitive material, in which maintenance of a roller installed in a processing tank is easy and generation of processing dirt can be prevented. It is in.

<Means for Solving the Problems> Such an object is achieved by the following (1) to (4) of the present invention.

(1) In a method of immersing a silver halide photosensitive material after exposure in a processing solution filled in a processing tank for processing, at least a surface of at least a part of rollers provided in the processing tank has water. A method for processing a silver halide light-sensitive material, comprising a hydrophilic polymer having a contact angle of 40 degrees or less with respect to water, wherein the hydrophilic polymer contains a hardening agent.

(2) The method for processing a silver halide light-sensitive material according to the above (1), wherein the hydrophilic polymer is gelatin.

(3) In the method of immersing the exposed silver halide photosensitive material in a processing solution filled in a processing tank and processing, at least a surface of at least a part of the rollers provided in the processing tank is hydrolyzed. A method for processing a silver halide light-sensitive material, characterized in that the material is composed of a polymer of a mold type.

(4) The method for processing a silver halide photosensitive material according to (3), wherein the hydrolysis-type polymer is an epoxy resin.

<Action> In the present invention. At least the surface of at least a part of the rollers installed in the treatment tank is made of a hydrophilic polymer having a contact angle of 40 ° or less with water and containing a hardening agent or a hydrolysis-type material.

When it is made of the above-mentioned hydrophilic material, tar does not easily adhere to the roller surface.

Further, when the roller is made of a hydrolysis-type material, since the roller surface is gradually eluted, even if tar is temporarily attached, the tar is eluted in the liquid, and the tar does not stay on the roller surface.

As a result, tar adhesion to the roller is prevented, and maintenance is facilitated. Further, there is no generation of processing dirt.

<Specific Configuration> Hereinafter, a specific configuration of the present invention will be described in detail.

In the present invention, when processing the silver halide photosensitive material after exposure, at least the surface of the roller installed in the processing tank is made of a hydrophilic material having a contact angle to water of 40 degrees or less, preferably 0 to 30 degrees. ing.

The above-mentioned rollers are a transport roller installed in the processing tank and immersed in the processing liquid during the processing, a loading roller or an unloading roller installed above or above the processing tank. It is preferable that the roller be a roller.

It is preferable that all the rollers that come into contact with the processing liquid have the above-described configuration, but they may be part of them.

The processing tank is a developing tank or the like in the processing of the black and white light-sensitive material, and in the processing of the color light-sensitive material, the bleaching ability used in the next step of the color developing step such as a color developing tank, a bleaching tank or a bleach-fixing tank is used. In the reversal process, a first black-and-white developing tank, a reversal color developing tank, and the like are included.

In the step of developing the black and white light-sensitive material, a silver image is formed and an oxidant is generated in the developing agent. This oxidized product is polymerized into a polymer when SO ₃ ^2- root contained as a preservative is not present or its concentration is low, and a tar-like water-insoluble material (hereinafter, referred to as “dehydrated”) is contained in a developer. , Called tar).

Such a phenomenon similarly occurs in the first black-and-white developer in the reversal process of the color photographic material.

On the other hand, in the color development step of processing a color photosensitive material,
At the same time that the silver image is formed, the oxidized form of the color developing agent is combined with the coupler to form a dye image, but without being combined with the coupler, the oxidation of the color developing agent present in the color developing solution is performed. The body polymerizes and tar forms.

In addition, when the oxidized form of the color developing agent present in the color developing solution without being polymerized is brought into the bleaching solution or the bleach-fixing solution of the next bath, such a processing solution contains a bleaching agent as an oxidizing agent. And the oxidized product is polymerized automatically and tar may be generated due to the presence or low concentration of SO ₃ ^2- root as a preservative.

Such tar formation is likely to occur under processing conditions in which an oxidized form of the developing agent is easily generated.

Such conditions include processing with a small amount of replenishment of the developing solution (900 ml / m ² or less, preferably 250 m
l / m ² of processing: replenishment rate 900 ml / m ² or less of the color developing solution, preferably 200 ml / m ² or less, more preferably treatment of 20-100 / m ^2), a large contact area between the developer and air That is, processing using a developing tank having a large opening degree (opening degree is set to tank capacity Vcm
^3, with a contact area Scm ² with air, when defined in S / V, 0.01 cm ^-1 or more, and particularly 0.02 cm ^-1 or more), and the like.

Also, when a developing tank equipped with a liquid level sensor is used, since the liquid level sensor is an electrode pair made of stainless steel or the like, an oxidized form of the developing agent is easily generated near the anode, and the liquid circulation As a result, the oxidized form of the developing agent increases in the developing solution, and is further added to the above-mentioned state, so that tar is easily generated.

In addition, normal processing is performed intermittently,
If the treatment interval is long, that is, if the treatment is performed only in a deserted manner, the oxidant is easily generated in addition to this state, and the tar is easily generated.

In the processing of the color photographic material, after the color development processing,
Even when processing using a processing solution having bleaching ability immediately,
Since the color developing solution is brought in and strongly oxidized by the processing solution having the bleaching ability, the brought-in developing agent is oxidized and turned into tar.

At this time, if the color developing solution brought in is oxidatively fatigued, tarring is further promoted.

As described above, the tar generated in the processing liquid easily adheres to the constituent members of the processing tank. In particular, the transport roller may rotate when transporting the photosensitive material, and the tar is likely to adhere. However, adhesion to the transport roller is particularly likely to cause processing stains and should be avoided.

However, in the present invention, since the roller surface is made of the above-mentioned material, the hydrophilicity is sufficient, and the tar is hardly adhered. This effect has a contact angle of 40
It can only be obtained by setting it below
Beyond 40 degrees you can no longer get anything, and such effects are critically reduced.

Examples of the constituent material of the roller body in the present invention include neoprene, various rubbers such as EPT rubber, rubber elastic bodies such as sunplane, thermolan, Hytrel, vinyl chloride, polypropylene, polyethylene, ABS resin, polyphenylene oxide (PPO), Nylon, polyacetal (POM), phenolic resin, polyphenylene sulfide (PPS), polyethersulfone (PES), polyetheretherketone (PEEK), various resins such as Teflon, polyimide, polyamideimide, and hydrophilicity such as alumina and titanium white Ceramics and the like can be mentioned, and a combination of these materials may be used. Further, stainless steel, titanium,
A metal such as Hastelloy may be used. In some cases, these metals may be used as they are.

The roller in the present invention may be hollow or solid, and is preferably solid from the viewpoint of strength and the like.

Among the above constituent materials, high-density polyethylene (density 0.941 to 0.965, molecular weight 20,000 to 10%) is preferred in terms of workability, strength, etc., and ease of hydrophilic treatment described below.
0,000), vinyl chloride, polyphenylene oxide, composite polypropylene, polyimide, polyamideimide and the like.

In the present invention, the surface of the roller body is subjected to a hydrophilic treatment so that the surface of the roller has the contact angle.

As the hydrophilic treatment, i) a method of irradiating an ultraviolet ray (UV light) or an electron beam to the surface of the roller main body having at least a surface made of a resin, or performing a plasma treatment;
ii) A method of forming a coating film of a hydrophilic polymer on the surface of a roller body having at least a surface made of rubber, resin, or ceramics.

In the method (i), the wavelength of the UV light to be used is not limited, but is preferably 200 to 400 nm, and the irradiation may be performed for about 0.1 to 10 seconds.

The irradiation dose in the case of an electron beam may be about 0.01 to 10 mC / cm ² .

In the case of plasma treatment, plasma may be formed by a known method such as a bipolar discharge type, and the operating pressure may be about 0.01 to 10 Torr.

On the other hand, in the method (ii), the thickness of the coating film is 0.
The thickness may be 5 to 50 μm.

Examples of the hydrophilic polymer in this case include gelatin, alginic acid, and polyvinyl carbazole. Among them, gelatin is preferably used.

In addition, the coating film may be formed by a known coating method, and may be formed of a plurality of layers. In this case, a different compound may be used for each layer or the same compound may be used.
The thickness when a plurality of layers are formed may be a total thickness.

 Further, a hardening agent is added to the hydrophilic polymer.

Examples of such hardeners include aldehyde compounds such as glutaraldehyde, active halogen compounds, active olefin compounds, epoxy compounds, and mucohalic acid compounds such as mucochloric acid. Particularly, glutaraldehyde, active halogen compounds, and epoxy compounds It is preferable to use

In this case, the addition amount of the hardener is 0.1 to 5% by weight of gelatin.
It is good to be about.

In forming the coating film, it is preferable to pre-treat the surface of the roller body in advance.

Pre-treatment, after cleaning the surface by a known method,
For example, a corona discharge treatment may be performed.

In the present invention, at least the roller surface can be made of a hydrolysis-type material, instead of making the roller surface have a contact angle in the above range.

This hydrolyzable material preferably has an elution amount of 1 to 1000 mg / l when immersed in an aqueous solution having a pH of 9 to 12 and a temperature of 25 to 50 ° C. for 1000 hours.

Specifically, an epoxy resin or the like is preferably used as the hydrolyzable polymer. Then, the coating film may be formed on the roller body made of the above-mentioned constituent material including a metal such as stainless steel.

Epoxy resin, commercially available oligomers and the like may be used as they are, and usually, a curing agent such as an acid anhydride, an amine such as an aliphatic amine, an acid amide, thiochol, or a compound containing a phenolic hydroxyl group is added. Curing takes place.

The amount of the curing agent added may be about 0.1 to 5% by weight of the epoxy resin.

In this case, the thickness of the coating film is preferably 0.05 to 5 mm as a dry film thickness. Further, the coating film may be formed by a known coating method, and may be a plurality of layers with the total film thickness being in the above range.

In particular, it is preferable to form a coating film on a metal such as stainless steel. In such a case, when coating,
It is preferable that the metal surface is cleaned by a known method and subjected to a pretreatment such as a sand blast treatment.

By configuring at least the roller surface with a hydrolysis-type material in this way, the material on the roller surface is gradually eluted into the treatment liquid, and even if tar is attached, the surface is eluted. It will be dispersed inside and the state of tar adhesion will not continue.

Even if such elution is performed, the amount of elution is very small, and the amount of decrease in roller diameter is about 1 to 50 μm even in continuous processing for about three months. In addition, there is no adverse effect on photographic performance.

Further, in the present invention, even if the characteristics of the roller surface are regulated as described above, the transportability of the photosensitive material is not hindered.

Next, a developing solution and a processing solution having a bleaching ability which are preferably used in the present invention will be described.

The color developing solution used for the development of the color light-sensitive material is preferably an alkaline aqueous solution mainly containing an aromatic primary amine-based color developing agent.

Aminophenol compounds are also useful as the color developing agent, but p-phenylenediamine compounds are preferably used, and a typical example thereof is 3-methyl-4.
-Amino-N, N-diethylaniline, 3-methyl-4-
Amino-N-ethyl-N-β-hydroxylethylaniline, 3-methyl-4-amino-N-ethyl-N-β-
Methanesulfonamidoethylaniline, 3-methyl-4
-Amino-N-ethyl-N-β-methoxyethylaniline and sulfates, hydrochlorides or p-toluenesulfonates thereof. These compounds can be used in combination of two or more depending on the purpose.

Color developing solutions include pH buffers such as alkali metal carbonates, borates or phosphates, development inhibitors such as bromide, iodide, benzimidazoles, benzothiazoles or mercapto compounds or antifoggants. It generally contains an agent and the like. If necessary, hydroxylamine, diethylhydroxylamine, sulfite hydrazines, phenylkamicarbazide, triethanolamine, catecholsulfonic acid, triethylenediamine (1,4-diazabicyclo [2,2,2] octane) Various preservatives such as, ethylene glycol, organic solvents such as diethylene glycol, benzyl alcohol, polyethylene glycol, quaternary ammonium salts, development accelerators such as amines, dye-forming couplers, competitive couplers,
Fogging agent such as sodium boron hydride, 1
An auxiliary developing agent such as -phenyl-3-pyrazolidone,
Viscosity imparting agents, aminopolycarboxylic acids, aminopolyphosphonic acids, alkylphosphonic acids, various chelating agents represented by phosphonocarboxylic acids, for example, ethylenediaminetetraacetic acid, nitrilotriacetic acid, diethylenetriaminepentaacetic acid, cyclohexanediaminetetraacetic acid , Hydroxyethyliminodiacetic acid, 1-hydroxyethylidene-1,1-diphosphonic acid, nitrilo-N, N, N-trimethylenephosphonic acid, ethylenediamine-N, N, N ', N'-tetramethylenephosphonic acid, ethylenediamine -Di (o-hydroxyphenylacetic acid) and salts thereof can be mentioned as representative examples.

Black-and-white developers used for reversal processing of color light-sensitive materials and development processing of black-and-white light-sensitive materials include dihydroxybenzenes such as hydroquinone and 3-hydroxy-3-ones such as 1-phenyl-3-pyrazolidone.
Known black-and-white developing agents such as pyrazolidones or aminophenols such as N-methyl-p-aminophenol can be used alone or in combination.

The pH of these color developing solutions and black-and-white developing solutions is generally from 9 to 12. It is preferable that the replenishment amount of these developing solutions is reduced. However, such a reduced replenishing amount can be realized by reducing the bromide ion concentration in the replenishing solution. Can be.
Further, the amount of replenishment can be reduced by using means for suppressing the accumulation of bromide ions in the developer. In general light-sensitive material 1 m ² per 900ml or less, if it is reduced 250ml
The following replenishment amounts are employed.

The processing solutions having bleaching ability used for the desilvering processing of color photographic materials are, specifically, bleaching solutions and bleach-fixing solutions.

Examples of the bleaching agent used in the bleaching solution or the bleach-fixing solution include compounds of polyvalent metals such as iron (III), cobalt (III), chromium (VI) and copper (II), peracids, quinones, and nitro compounds. Are used. Representative bleaches include ferricyanide; dichromate; organic complexes of iron (III) or cobalt (III), such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, cyclohexanediaminetetraacetic acid, methyliminodiacetic acid, 1,3- Aminopolycarboxylic acids such as diaminopropanetetraacetic acid and glycol ether diaminetetraacetic acid, or complex salts such as citric acid, tartaric acid and malic acid; persulfates; bromates; permanganates; nitrobenzenes and the like can be used. . Among these, iron aminopolycarboxylates (II) including iron (III) complex salts of ethylenediaminetetraacetate
I) Complex salts and persulfates are preferred from the viewpoint of rapid processing and prevention of environmental pollution. In addition, iron aminopolycarboxylate (II
I) Complex salts are particularly useful in both bleaching and bleach-fixing solutions. These aminopolycarboxylic acid iron (II
I) The pH of the bleaching solution or bleach-fixing solution using the complex salt is usually 5.5.
-8, but may be treated at a lower pH for faster processing.

In the bleaching solution and the bleach-fixing solution, a bleaching accelerator can be used if necessary. Specific examples of useful bleach accelerators include:
No. 3,893,858 is described in the following specification:
No., West German Patent No. 1,290,812, JP-A-53-95630, Research Disclosure No. 17,129 (July 1978)
Compounds having a mercapto group or disulfide bond described in, for example; a thiazolidine derivative described in JP-A-50-140129; a thiourea derivative described in US Pat. No. 3,706,561; an iodide described in JP-A-58-16235 Salt; West German Patent No.
Polyoxyethylene compounds described in 2,748,430; polyamine compounds described in JP-B No. 45-8836; bromide ions and the like can be used. Among them, a compound having a mercapto group or a disulfide bond is preferable in view of a large accelerating effect, and in particular, U.S. Patent No. 3,893,858 and West German Patent No. 1,290,8
No. 12, JP-A-53-95630 are preferred.
Further, the compounds described in U.S. Pat. No. 4,552,834 are also preferred.

Thiosulfates are used as fixing agents in bleach-fixing solutions.
Thiocyanates, thioether compounds, thioureas,
Although a large amount of iodide salts and the like can be mentioned, thiosulfate is generally used, and ammonium thiosulfate is most widely used. As the preservative, a sulfite, a bisulfite, a sulfinic acid, or a carbonyl bisulfite adduct is preferable.

The light-sensitive material used in the present invention may be either a color or black-and-white light-sensitive material.

Such materials include, for example, color paper, color negative film, color reversal film, color positive film, color reversal photographic paper, photographic photosensitive material for plate making, X-ray photographic photosensitive material, black and white negative film, black and white photographic paper, photosensitive material for micro And the like.

In particular, it is preferable to apply the present invention to the processing of a color light-sensitive material.

In the processing of the light-sensitive material in the present invention, in addition to the above-described processing solutions, processing solutions of a fixing solution, a washing water, and a stabilizing solution are used. Details of the processing solution, including the processing solution, processing conditions, etc. are described in JP-A-63-70857, JP-A-1-190889, JP-A-2-103035, JP-A-2-103037, and JP-A-2-303037. −71260
No., JP-A-61-267559, etc. can be referred to.

The present invention can be applied to various processing apparatuses.
Examples of such a printer include a wet copying machine, an automatic processor, a printer processor, a video printer processor, a photo print creation coin machine, and a color paper processing machine for plate inspection.

<Example> Hereinafter, the present invention will be described specifically with reference to examples.

Example 1 Fuji Photo Film Co., Ltd. large transmissive display film: Fuji G color film GF8703 (base film: 175)
μm-thick PET) was processed using a processing machine RC-24-40 manufactured by Hope Co., using a processing agent GP-26 manufactured by Fuji Photo Film Co., Ltd. according to the following processing steps.

The rollers installed in the processing machine were all made of high-density polyethylene.

The amount of the color developing solution brought into the bleaching tank was 48 ml per m ² of the light-sensitive material.

 The opening degree (S / V) of the color developing tank was 0.3.

Under these processing conditions, the film was subjected to a running process for three months at a processing amount of 50 sheets per day in a large quarter size.

 This processing is referred to as processing 1A.

In processing 1A, the rollers installed in the color developing tank
The same treatment was performed except that a gelatin layer was used.

Such a roller is obtained by cleaning and drying the high-density polyethylene roller in the treatment 1A twice using an INHCl aqueous solution, and then performing corona discharge treatment (using a discharge unit of a copying machine.
(Irradiation at 10,000 V for 20 minutes), and then a gelatin coating film was formed with a dry film thickness of 3 μm.

At this time, the gelatin coating solution was prepared by adding a 50 wt% aqueous solution of glutaraldehyde as a hardener to a 10 wt% aqueous solution of commercially available photographic gelatin (680 gelatin manufactured by Nippon Leather).
After application, the mixture was heated and dried at 60 ° C. after the application.

 This processing is referred to as processing 1B.

In the treatment 1A, the same treatment was carried out except that a roller provided in the bleaching tank was coated with a gelatin layer.

This roller is the same as the roller of the color developing tank in the process 1B.

 This processing is referred to as processing 1C.

In treatment 1A, the same treatment was carried out except that rollers in both the color developing tank and the bleaching tank, in which a coating film was formed on the same gelatin as those in treatments 1B and 1C, were provided.

 This processing is referred to as processing 1D.

With respect to the treatments 1A to 1D, the state of tar adhesion of the rollers in the color developing tank and the bleaching tank and the stain on the treatment were examined.

The results are shown in Table 1. The contact angle with water is also shown.

For tar adhesion, visually observe the roller,
In the table, they are indicated by ○, Δ, and ×.

…: No tar adhered △: almost no tar adhered (slightly present) ×: tar adhered In addition, for processing stains, the front and back surfaces of the processed photosensitive material were visually observed. Indicated by x.

○… No dirt △… Slight dirt x… Dirty As is clear from Table 1, in treatment 1A, both tanks
The roller is very dirty with tar. To remove this tar, remove the roller and put it in a 5 wt% HCl aqueous solution.
It was necessary to soak for one hour and then wash with warm water for one hour.

On the other hand, in treatments 1B and 1C, the same washing operation as above was required for only one of the tanks, but in the other tank, tar was hardly adhered, and the tank was immersed in the same HCl aqueous solution for 1 minute as described above. Only one minute of washing with warm water was required, making maintenance easy. In the treatment 1D, maintenance was easy in both tanks.

Example 2 Color paper Fujicolor Super HR paper manufactured by Fuji Photo Film Co., Ltd. was processed by a modified processing machine FPSR2030 manufactured by Fuji Photo Film Co., Ltd. according to the following processing steps using a processing agent CP-23 manufactured by Fuji Photo Film Co., Ltd.

The rollers installed in the color developing tank and the bleaching tank of the above processor are all made of stainless steel (SUS316) (contact angle to water 58 degrees), and the outlet roller is a sock roller wrapped with a cotton cloth. did.

In addition, a stainless steel liquid level sensor for preventing empty cooking was installed in each tank, and electricity was supplied at an amount of 20 μA during temperature control.

The amount of the color developing solution brought into the bleaching tank was 60 ml per 1 m ² of the light-sensitive material.

 The opening degree (S / V) of the color developing tank was 0.1.

Under such processing conditions, the running processing was performed for one month until the cumulative replenishment amount of the color developing tank became one time.

 This processing is referred to as processing 2A.

In treatment 2A, the same treatment was performed except that a roller provided in a color developing tank was a stainless steel roller coated with an epoxy resin layer.

For such a roller, after cleaning and drying the stainless steel roller in treatment 2A with a 1N HCl aqueous solution, sandblasting is performed, and an epoxy resin oligomer (CY-179, manufactured by Ciba-Geigy Japan) and an acid anhydride hardener (Ciba-Geigy, Japan) are used. 1: 1 ratio (weight)
The mixture was applied to a thickness of 1 mm, cured by heating at 115 ° C. for 15 hours to form a coating film (dry film thickness: 0.3 mm).

This processing is referred to as processing 2B. However, the running was performed for three months.

In the treatment 2A, the same treatment was carried out except that a roller provided in the bleaching tank was coated with an epoxy resin layer.

This roller was the same as the roller in the color developing tank in Process 2B, and the running conditions were the same as in Process 2B.

 This processing is referred to as processing 2C.

In treatment 2A, the same treatment was carried out except that rollers provided with the same epoxy resin coating as those in treatments 2B and 2C were provided to the rollers of both the color developing tank and the bleaching tank.

 This processing is referred to as processing 2D.

With respect to the treatments 2A to 2D, the state of tar adhesion of the rollers in the color developing tank and the bleaching tank and the stain on the treatment were examined in the same manner as in Example 1.

 Table 2 shows the results.

The elution amount of the resin tank was about 0.5 g / l at pH 10.25, temperature of 38 ° C., and time of 1000 hours.

As is apparent from Table 2, tar adhesion was remarkable in the stainless steel roller in the treatment 2A.
Time needed to be washed.

Further, with the sock roller, the tar cannot be removed by washing, and the sock has to be replaced.

On the other hand, in treatments 1B and 1C, the same washing operation as above was required for only one of the tanks, but in the other tank, tar was hardly adhered, and the tank was immersed in the same HCl aqueous solution for 1 minute as described above. Only one minute of washing with warm water was required, making maintenance easy. In the treatment 1D, maintenance was easy in both tanks.

Further, in such a roller, the reduction in roller diameter due to hydrolysis is about 10 μm, and in a bleaching tank, 3 μm
And there was no adverse effect on the photographic performance.

<Effects of the Invention> According to the present invention, tar adhesion to the roller surface is prevented, and maintenance is facilitated. Further, the occurrence of processing dirt is suppressed.

Claims (4)

(57) [Claims] 1. A method of immersing a silver halide photosensitive material after exposure in a processing liquid filled in a processing tank, wherein at least a surface of at least a part of rollers provided in the processing tank is processed. A method for processing a silver halide photosensitive material, comprising a hydrophilic polymer having a contact angle of 40 ° or less with water, wherein the hydrophilic polymer contains a hardening agent. 2. The method according to claim 1, wherein the hydrophilic polymer is gelatin.
Processing method of silver halide photosensitive material. 3. A method for immersing a silver halide photosensitive material after exposure in a processing solution filled in a processing tank, wherein at least a part of rollers provided in the processing tank has at least a surface thereof. A method for processing a silver halide photosensitive material, comprising a hydrolyzable polymer. 4. A method according to claim 3, wherein said hydrolyzable polymer is an epoxy resin.