JP2879797B2 - Washing method of silver halide photosensitive material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for washing a silver halide photosensitive material with water.

<Prior Art> Silver halide photosensitive material (hereinafter referred to as photosensitive material)
Is subjected to processes such as development, desilvering, washing with water, and stabilization after exposure. A developing solution is used for development, a bleaching solution, a bleach-fixing solution, and a fixing solution are used for desilvering, tap water or ion-exchanged water is used for washing, and a stabilizing solution is used for stabilizing processing. 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 applying processing equipment such as an automatic developing machine or a silver halide photographic copying machine, and the photosensitive material is processed by sequentially transporting the photosensitive material between processing tanks in these equipment. .

With the development of a small-scale processing system called a minilab, miniaturization of the automatic developing machine is desired. This downsizing is also desired in a silver halide photographic copying machine (color copier).

On the other hand, in the case of such treatment, environmental protection,
There has been a demand for resource saving, and in particular, saving of washing water has become an issue.

In order to reduce the amount of washing water, it is known to increase the washing efficiency. In fact, it is known that the washing efficiency is improved by using a plurality of washing tanks containing a predetermined amount of washing water.

For this reason, a so-called multi-stage countercurrent method is adopted as a method for increasing the washing efficiency with a small amount of water.

In such a multi-stage countercurrent method, when replenishing the flushing water, the flushing water is replenished from the last flushing tank, and the overflow of the subsequent flushing tank flows between the adjacent flushing tanks into the preceding flushing tank sequentially. Will be.

Even when replenishing the washing water in this way, it is desired to reduce the replenishment amount. Actually, in an automatic developing machine or a silver halide photographic copying machine used in a minilab, the photosensitive material is 1 m.
^In many cases, a low replenishment method with a replenishment amount of 300 ml or less per unit is adopted.

In addition, it is not desirable to arrange a large number of washing tanks in parallel from the viewpoint of miniaturization of the processing apparatus. Usually, in the above-described processing apparatus, two to three washing tanks are often provided.

<Problems to be Solved by the Invention> When replenishing washing water, conventionally, in large-scale developing laboratories, the conductivity of the overflow of the washing tank is measured to check the degree of contamination of the washing water, and the replenishing amount is determined. In some cases, such as the above-mentioned automatic processing machines for minilabs and silver halide photographic copiers, a certain amount of washing water is replenished at the start of processing according to the processing amount of photosensitive material. Only the method that is performed is adopted. In addition, it is also known to replenish water or perform shower water washing according to the unprocessed time regardless of the processing of the photosensitive material at the time of so-called light processing, in which the processing amount of the photosensitive material is small [Japanese Patent Application No. 62-212292 (JP-A-01-55564)].

For this reason, the replenishment amount is often not appropriate in any case, and the washing water may be wasted.

In general, when the above low replenishment method is employed, there is a problem of dyeing caused by the sensitizing dye adhering to the photosensitive material.

This dyeing is due to improper replenishment,
In order to solve this problem, for example, if a method of determining the replenishment amount by conductivity measurement, which is often performed in the above-mentioned large-scale developing laboratory, is applied, sufficient results cannot be obtained.

This dyeing is particularly remarkable when the processing amount of the light-sensitive material is small and the temperature is controlled overnight, because the washing water is significantly reduced and the replenishing amount is not sufficient.

Further, when the final solution temperature is adjusted in a silver halide photographic copying machine, the washing water evaporates greatly, and the overflow from the second washing tank to the first washing tank may not occur.

By the way, the present invention and the like are described as follows. "A plurality of cleaning chambers formed of a block-shaped member and sequentially connected by a narrow passage, and a conveying means for conveying a photosensitive material so as to sequentially pass through each of the cleaning chambers. And a photosensitive material processing apparatus having the following features (Japanese Patent Application No. 01-27034).

In fact, in this case, the installation space is smaller than in a multi-stage countercurrent system in which a plurality of treatment tanks are arranged side by side, the size of the apparatus can be reduced, and the washing efficiency can be improved. This has the effect of reducing the amount used.

This is because, since each processing chamber is connected by a narrow passage, the degree of contamination of the washing water changes between the processing chambers according to the supply direction of the washing water (washing water), and the supply direction of the washing water is different from the supply direction of the washing water. By transporting the photosensitive material in the reverse direction, the photosensitive material is sequentially treated with clean rinsing water, and the rinsing efficiency is improved.

In such a washing tank, a method of replenishing the washing water from the last processing chamber is adopted. As in the above, the washing water is replenished at the start of the processing. Therefore, after a lapse of time from the end of the processing, dirty washing water is stored in the last processing chamber, and also in this case, there is a problem that appropriate replenishment cannot be performed.

The present invention provides a silver halide light-sensitive composition that can easily perform appropriate and wasteful replenishment and prevent dyeing in a low replenishment type washing process, and can obtain good photographic properties. An object of the present invention is to provide a method for washing a material with water.

<Means for Solving the Problems> In order to achieve the above object, the present invention has the following configuration (1).

(1) When the silver halide photosensitive material is subjected to a water washing treatment using a washing tank having a continuous processing path in which a plurality of processing chambers are sequentially connected by a narrow path after the silver halide photosensitive material, while replenishing the washing water in the photosensitive material 1 m ² per 300ml less replenishing amount, receives the processed signal of the silver halide light-sensitive material to detect the transparency of the washing water, the amount of the sensitizing dye according to the transparency A method of washing a silver halide photosensitive material, wherein the supplementary washing water is replenished, and the additional replenishment of the washing water prevents dye dyeing on the silver halide photosensitive material.

<Function> According to the present invention, when a silver halide photosensitive material (hereinafter, photosensitive material) is subjected to a washing process after a predetermined process such as development, the transparency of washing water is detected, and the amount of these sensitizing dyes is determined. And the washing water is replenished or replenished accordingly, so that proper and lean replenishment can be easily performed.

Further, since replenishment is performed in accordance with the amount of the sensitizing dye present in the washing solution obtained from the transparency, dyeing is prevented.

Further, this replenishment can be applied to a washing tank having a continuous processing path in which a plurality of processing chambers are sequentially connected by a narrow path, and a preferable result is obtained.

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

In the method for washing a silver halide light-sensitive material of the present invention, the transparency of the washing water is detected, the amount of the sensitizing dye is obtained therefrom, and the washing water is replenished or replenished accordingly.

FIG. 1 shows an example of the washing tank used in the present invention.

The washing tank 1 shown in FIG. 1 is provided with a light transmittance sensor 20 as a means for detecting the transparency of the washing water W in the tank.

The light transmittance sensor 20 measures the light transmittance of the washing water W, and detects the transparency based on the light transmittance.

Since the light transmittance sensor 20 measures the light transmittance, it has a light emitting element 21 and a light receiving element 22 as shown in the figure.

The light emitting element 21 is connected to a power supply 23, while the light receiving element 22 is controlled by a control means 26 via a comparator 24 and an A / D converter 25.
Connected to.

In this case, the wavelength (λ) of the light emitted from the light emitting element 21 is not particularly limited as long as the light transmittance can be measured, but is preferably a wavelength in the visible region.

In the present invention, the main object is to prevent dyeing that occurs when a sensitizing dye adheres to a silver halide photosensitive material,
This is because the sensitizing dye has an absorption maximum in the visible region.

As the light transmittance sensor 20 shown in the figure, a commercially available one can be used as it is, which is easy to obtain and advantageous in terms of price, and can be easily installed in a tank. In addition, since it is small, it does not hinder processing.

In addition, a replenishing tank and the like are installed in the washing tank 1 as necessary.

The washing method of the present invention will be described with reference to the washing tank 1 having the above-described configuration.

First, as shown in FIG. 2, the transmittance (T) of the washing water
And the current value (I) obtained by converting the light transmittance beforehand, and setting a light transmittance threshold (T ₀ ) for separating the transparency and opacity of the washing water, and corresponding to this T ₀ Current value (I ₀ ) to be set.

Replenishment of washing water, the current value on the basis of this I _0,
Although actually controlled, for convenience, the following description is based on the light transmittance.

In this case, the light transmission threshold (T ₀ ) is usually 10 to 90.
%, Especially about 20-80%.

First, a case where the transparency of the washing water is detected and the washing water is replenished will be described.

In the washing tank 1, when the processing of the silver halide photosensitive material (photosensitive material) is started, the washing water is replenished.

In this replenishment, the light transmittance sensor 20 detects the light transmittance (T) of the washing water W, and the replenishment is continued until the light transmittance (T) reaches the threshold value (T ₀ ).

As shown in FIG. 1, the light transmittance (T) detected by the light transmittance sensor 20 is input to the control means 26 via the comparator 24 and the A / D converter 25.

This control means 26 includes, for example, a third
As shown in the figure, a signal indicating whether T is smaller than T ₀ (T <T ₀ ) or larger than T ₀ (T ≧ T ₀ ) is input from the A / D converter 25.

At this time, if T ≧ T ₀ , replenishment is not performed.

On the other hand, when T <T ₀ , the replenishment of a predetermined amount is started, and this operation is repeated. When the condition of T ≧ T ₀ is satisfied, the replenishment procedure ends and the replenishment is stopped.

Note that this replenishment is usually performed before the processing starts,
Depending on the case, it may be during processing.

In the above description, the replenishment control is automatically performed. However, when the threshold (T ₀ ) is reached, a means for generating some warning such as turning on a lamp or sounding a buzzer is provided. Alternatively, the replenishment of the washing water may be manually stopped.

Next, a case where additional replenishment is performed according to transparency will be described.

As before, prior to processing, the light transmittance (T) is detected,
Whether or not T ≧ T ₀ is input to the control means 26, and necessary replenishment is performed.

As shown in FIG. 4, if it is determined that T ≧ T ₀ , replenishment satisfying T ₀ is not required. Therefore replenishment rate V _R becomes zero in order to satisfy T _0, the washing water replenishment rate V _R0 according to the processing amount of the light-sensitive material is replenished.

On the other hand, if it is determined that T <T ₀ , replenishment is performed until the condition of T ≧ T ₀ is satisfied. The replenishment rate V _R is the control means of this time
Entered in 26.

If the conditions of this T ≧ T ₀ is satisfied, compared with the replenishment rate V _R0 and the replenishment amount V _R corresponding to the processing amount of the photosensitive material is made, when a V _R0 -V _R> 0, The washing water is replenished with the replenishment amount of (V _R0 −V _R ).

In this case, V _R0 is a replenishment amount in consideration of the processing amount of the photosensitive material and other factors, as described above, and may be input to the control unit _26.From this, it is possible to calculate V _R0 −V _R. Good.

When V _R0 −V _R > 0, how much (V _R0 −V _R ) is replenished?
It may be performed before the start of the process or during the process.

In particular, it is preferable that the replenishment is performed before the photosensitive material is subjected to a water washing process in response to a signal indicating that the photosensitive material is to be processed (for example, a signal for setting the number of copies in a silver halide photographic copying machine described later). This means that clean water will always be stored in the last washing tank just before the washing process,
This is because a constant processing quality can always be given.

The above V _R0 is a low replenishing amount, usually less replenishing amount 300ml per photosensitive material 1 m ^2, preferably 50～200Ml.

Note that, unlike the above, a procedure may be used in which after supplementing the _VRO amount, additional supplementation is performed according to the light transmittance.

As described above, in the present invention, since the light transmittance is detected and the washing water is replenished or additionally replenished accordingly, conventionally, a constant amount of the washing water is uniformly used at the start of the generally used processing. Compared with the case of replenishment, appropriate and lean replenishment can be easily performed.

Further, since the sensitizing dye is replenished or additionally replenished according to the light transmittance, dyeing caused by the sensitizing dye adhering to the photosensitive material is effectively prevented.

This sensitizing dye usually has an absorption maximum in the visible region, and for this reason, measuring the transmittance of the washing water in the visible region and replenishing it in accordance with this directly results in direct dyeing. This is because replenishment that can solve the problem can be performed.

The dyeing is replenishing amount of washing water is small, but becomes noticeable in the washing process of so-called low replenishing method (hereinafter replenishment rate 300ml per photosensitive material 1 m ^2), the additional supplementation in accordance with the light transmittance in the present invention This problem does not occur at all.

Also, even when simply replenishing according to the light transmittance,
The replenishing rate is about 50 to 600 ml / m ² , preferably about 50 to 500 ml / m ² .

In the washing tank shown in FIG. 1, the photosensitivity sensor 20 is arranged in the tank. However, in some cases, a transparent section through which washing water is communicated is disposed outside the tank, and the transparent section transmits light. The degree may be detected. However, considering the accuracy of detection, etc.,
As shown in the figure, it is preferable to install inside the tank. Furthermore, it can also be installed in a circulation path.

The means for detecting the transparency is not limited to the light transmittance sensor as shown in the drawing as long as it can detect the light transmittance, and a commercially available measuring instrument having a light emitting element and a light receiving element can be used as it is. Can be used.

These include various densitometers or colorimeters,
Further, there are commercially available oil monitors, oil checkers, digital chromic meters, photointerrupter relays, and the like. That is, any device may be used as long as it is a set device that emits light and has a light receiving element through a liquid. Examples of the densitometer include a densitometer included in various water quality test sets, for example, a densitometer manufactured by Kyoritsu Co., Ltd., a chromaticity meter WA-PT-4T; 4C; 4S, a digital chromic meter Model JCM-1 manufactured by Johoku Kikai Co., Ltd.
There are SYNTRON oil checkers and oil monitors. As for photointerrupter relays, various specifications are sold by various electric manufacturers. For example, 1A25LCC manufactured by Sharp Corporation is used.

Rinse tub 1 shown in FIG. 1 for carrying out the rinsing method of the present invention.
Is preferably applied to a silver halide photographic copying machine (for example, Color Copier AP-5000 manufactured by Fuji Photo Film Co., Ltd.), an automatic developing machine for minibora, and the like.

As an example of this application, FIG. 5 schematically shows an arrangement of processing tanks in a silver halide photographic copying machine.

As shown in FIG. 5, a silver halide photographic copying machine includes a developing tank 31 filled with a color developing solution 310, a bleach-fixing tank 32 filled with a bleach-fixing solution 320, and a washing tank 33 filled with washing water W. Has 34.

In this case, the washing tank 1 shown in FIG. 1 is applied to a washing tank 33 which is the first washing tank, and the light washing sensor 33 is installed in the washing tank 33.

A replenishing tank (not shown) is provided at least in the washing tank 34, and a replenishing tank is provided in each of the developing tank 31 and the bleach-fixing tank 32 as appropriate.

Therefore, in the above configuration, when the photosensitive material is carried into the color developing solution 310 in the developing tank 31 and processing is started, the light transmittance of the washing water W in the washing tank 33 is detected by the light sensor 20. Then, the washing tank 34 is replenished with washing water in the procedure shown in FIG. 3 or FIG. In this case, between the washing tanks 33 and 34, a multi-stage countercurrent system is adopted in which the overflow of the washing tank 34 flows into the washing tank 33, and the overflow of the washing tank 34 flows into the washing tank 33 (see the arrow shown in the figure). ).

After completion of the replenishment, the light-sensitive material is washed with washing water having an appropriate light transmittance.

In a silver halide photographic copying machine, the means for detecting the light transmittance is:
It is necessary to be compact and inexpensive, and such a thing generally has low light transmittance detection ability, and as described above, it is preferable to detect the light transmittance of the washing water in the first washing tank. This is preferable for obtaining the effects of the present invention.

In addition, since this method is inexpensive and small, it is preferable that it can be installed at any location. Specifically, various types of photointerrupter relays, so-called light-blocking checkers, etc. [for example, 1A25LC manufactured by Sharp Corporation] may be used.

Conventionally, depending on the processing amount of the photosensitive material, a method in which a certain amount of washing water is replenished during processing, a method in which a large amount of washing water is added in advance before processing and the water is freshened before processing, and It has been practiced to drain the washing water after the treatment and fill the washing water immediately before the treatment.However, compared to these methods, at the level of the normal or large amount of treatment, the washing water is not wasted. Can be.

Also, at a small processing amount level, especially when the temperature is controlled overnight, the conventional method of replenishing a certain amount of washing water according to the processing amount of the photosensitive material does not provide a proper replenishing amount, and an extreme replenishment amount is obtained. In this case, the amount of evaporation is too large,
Even a situation in which the tank did not overflow occurred, but the present invention can prevent such a situation.

Therefore, in the method of the present invention, an appropriate replenishing amount can be obtained in any case, and good photographic properties can be obtained. In particular, in the case of a small processing amount level as described above, dyeing can be effectively prevented.

FIG. 6 schematically shows the arrangement of processing tanks in an automatic developing machine for a minilab.

In this case, the automatic developing machine includes a developing tank 41 filled with a color developing solution 410, a bleach-fixing tank 42 filled with a bleach-fixing solution 420, and a washing tank 43 filled with washing water W, as shown in FIG.
Has 44 and 45.

In the above description, the washing tank 1 shown in FIG. 1 is applied to the last washing tank 45, and the light transmittance sensor 20 is installed in the washing tank 45.

A replenishing tank (not shown) is provided in the washing tank 45, and a replenishing tank is appropriately provided in each of the developing tank 41 and the bleach-fixing tank.

In the above configuration, when the photosensitive material is carried into the developing tank 41 and the processing is started, similarly to the silver halide photographic copying machine, the light transmittance of the washing water W in the washing tank 45 is detected. Then, the washing tank 45 is replenished with washing water in the procedure shown in FIG. 3 or FIG. In this case, a multi-stage countercurrent method is adopted between the washing tanks 43, 44 and 45, and the overflow of the washing tank 45 flows into the washing tank 43 and the overflow of the washing tank 44 flows into the washing tank 43 sequentially. (See the illustrated arrow).

After completion of the replenishment, the light-sensitive material is washed with washing water having an appropriate light transmittance.

In an automatic developing machine for a minilab, it is possible to mount a developing machine having a high light transmittance detection capability as compared with the above-described copying machine, and therefore, it is preferable to detect the light transmittance of the washing water in the last washing tank. By doing so, it is possible to make the washing water in the last washing tank substantially free of pigments and the like, and to prevent stain (deposition of pigments) from being generated on the processed photosensitive material. Can be prevented. Moreover, by adding and replenishing a minimum amount of washing water, stain (dyeing) can be prevented, which is preferable in obtaining the effects of the present invention.

Therefore, as in the case of the above-mentioned silver halide photographic copying machine, good photographic properties can be obtained without occurrence of dyeing in this case as well.

The washing tank for carrying out the washing method of the present invention is not limited to the one shown in FIG. 1, but a continuous processing in which a plurality of processing chambers as shown in FIG. It may have a road.

As shown in FIG. 7, the rinsing tank 6 includes processing chambers 6A, 6B, 6
It has five processing chambers C, 6D, and 6E, and a narrow passage 62 is provided between these processing chambers. Also. In the upper portions of the processing chambers 6A and 6E, narrow passages 61 and 63 for loading or unloading the photosensitive material are provided, respectively.

Such a processing chamber and a passage are usually formed using a block body.

FIG. 7 schematically shows only the outlines of the processing chamber and the passage, and omits the illustration of the housing, the block, the conveying rollers for conveying the photosensitive material, the guides, and the like.

The details of such a washing tank are described in Japanese Patent Application Nos. 01-27034, 01-25132, and 01-61707 by the present applicant.

In such a washing tank 6, as shown in FIG. 7, a sensor is provided in the last processing chamber 6E similarly to the washing tank 1 in FIG.
20 have been installed.

In addition, the washing tank 6 is provided with a replenishing tank for replenishing the washing water W. The rinsing water W is supplied from the processing chamber 6E, and the overflow 0F is discharged from the processing chamber 6A (see arrows in the drawing).

Accordingly, in the washing tank having such a configuration, when the processing of the photosensitive material is started, the transmittance of the washing water W in the processing chamber 6E is detected, and the processing is performed according to the procedure shown in FIG. 3 or FIG. The washing water W is supplied from the chamber 6E, and the washing tank 6 is refilled.

Specifically, it is the same as the case of the washing tank shown in FIG.

In such a washing tank 6, the water overflows from the processing chamber 6A.

After completion of the replenishment, the light-sensitive material is washed with washing water having an appropriate light transmittance.

The present inventors, in such a washing tank, since each processing chamber is connected by a narrow passage, the degree of contamination of the washing water changes between the processing chambers according to the supply direction of the washing water, By transporting the photosensitive material in a direction opposite to the supply direction of the washing water, the photosensitive material is sequentially treated with clean washing water, and the washing efficiency is improved, and the washing efficiency is improved. It is sufficient to use only a washing tank, and it has been confirmed that the device can be downsized.

It is considered that such an effect is due to the fact that the flushing water slightly moves between the respective processing chambers during the treatment in accordance with the supply direction of the flushing water, while the flushing water hardly communicates between the respective processing chambers at the time of suspension. ing.

However, in such a washing tank, even when the processing is stopped, the communication of the washing water between the processing chambers is not completely interrupted, so that the washing water in the processing chamber 6E is not removed as time passes. Dirt increases.

Therefore, as described above, the replenishment or additional replenishment by detecting the light transmittance of the washing water W in the processing chamber 6E can prevent the occurrence of dyeing and the like, in order to obtain good photographic properties. It is valid. In addition, since the replenishment is directly related to the photographic properties, the replenishment can be performed appropriately and without waste.

Normally, replenishment rate in such a washing tank, when simply refilled in accordance with the light transmittance is 50~300ml about per photosensitive material 1 m ^2, when adding replenishment to 300 ml / m ² or less replenishing amount In addition, a predetermined amount corresponding to the light transmittance is replenished.

The washing water used in the present invention may be any of tap water, ion-exchanged water and the like, and may contain a known additive as needed.

For example, chelating agents such as inorganic phosphoric acid, aminopolycarboxylic acid, and organic phosphoric acid, disinfectants that prevent the growth of various bacteria and algae, deterrents, hardening agents such as magnesium salts and aluminum salts, drying loads, and unevenness. A surfactant or the like can be used to prevent the occurrence of blemishes. Or LEWest, “W
ater Quality Criteria "Phot.Sci.and Eng., vol.9 No.6
Compounds described in P344 to 359 (1965) and the like can also be used. Further, in some cases, it is preferable to add various hardeners used in the photographic emulsion disclosed in JP-A-58-13243. In addition, any colorless treatment chemical that does not affect the light transmittance can be added.

The water washing method of the present invention can be applied to any processing of various black-and-white or color light-sensitive materials including a water washing step, and not only the silver halide photographic copying machine and the automatic developing machine for minilab, but also The present invention can be applied to any processing apparatus that performs the above processing.

Examples of the photosensitive material include color paper, auto positive 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, Microscopic photosensitive materials and the like can be mentioned.

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

Example 1 An auto-positive color paper “Fuji Color Copy Paper Type Soft Copy Paper” manufactured by Fuji Photo Film Co., Ltd. was replaced with a silver halide photographic copying machine “Color Copier” manufactured by Fuji Photo Film Co., Ltd.
AP-5000 "according to the following process.

In this case, the configuration of the treatment tank is shown in FIG. 5, and the washing tank shown in FIG. 1 is applied to the first washing tank. The light transmittance sensor uses a photo interrupter relay [1A25CL manufactured by Sharp Corporation] and emits light of about 400 to 800 nm. The light transmittance (T) threshold (T ₀ ) is about Ten~
30%.

The transmittance of the washing water in the first washing tank was detected, and replenishment was performed at the start of the treatment according to the procedure shown in FIG.

 Such processing is referred to as processing 1A.

In the process 1A, instead of performing replenishment at the start of the process according to the procedure shown in FIG. 3, additional replenishment is performed according to the procedure shown in FIG.

At this time, V _R0 was set to 40 ml / m ² .

 Such processing is referred to as processing 1B.

In processing 1B, using a normal color copier,
The same processing was performed except that the replenishment was not performed according to the light transmittance.

 This is referred to as processing 1C.

Treatment 1A, 1B, at 1C, the processing of the photosensitive material 0.5 m ² 24
This was repeated every hour, and this was continued for 120 hours, during which the temperature was controlled overnight, and this was continued for 60 days including the actual 50 days and the days off, and the presence or absence of dyeing was examined.

For dyeing, measure the green density of the white background of the processed photographic material, and clean the sensitized material again with clean water (32-38 ° C).
After washing with water for 40 seconds and drying, the green density of the white background was measured again, and the difference between the densities before and after the rewashing was evaluated (the smaller the difference, the smaller the staining).

 The results are shown below.

Green density difference in white area Treatment 1A 0.03 Treatment 1B 0.02 Treatment 1C 0.13 The replenishment amount at the start of treatment 1A after 60 days including holidays is 200 ml / m ² , and the replenishment amount in treatment 1B is
200 ml / m ^2, replenishment rate of the processing 1C was 0~40ml / m ^2.

Example 2 The following processing was performed using a color paper “Super HR Super (abbreviation: CLP03)” manufactured by Fuji Photo Film Co., Ltd., and a minilab automatic machine to which a processing tank configuration as shown in FIG. 6 was applied. Treated according to the process.

It should be noted that the light transmittance sensor using the Yuesu Trading Co., Ltd. of oil checker (SYNTRON), T ₀ 8
0-90%.

The transmittance of the washing water in the third washing tank was detected, and replenishment was performed at the start of the treatment according to the procedure shown in FIG.

 Such processing is referred to as processing 2A.

In the process 2A, additional replenishment is performed according to the procedure shown in FIG. 4 instead of FIG.

At this time, the replenishment rate V _R0 of the washing water was 80 ml / m ² .

 Such processing is referred to as processing 2B.

In addition, in process 2B, the same process was carried out except that replenishment was not performed according to the light transmittance using a normal automatic developing machine for a minilab.

 This is referred to as processing 2C.

In processing 2A, 2B and 2C, processing of 0.3 m ² of photosensitive material
This was repeated every hour, and this was continued for 120 hours. During that time, the temperature was controlled overnight, and this was continued for 50 days during actual work and 60 days including a rest day to check for the occurrence of dyeing.

 The dyeing was examined in the same manner as in Example 1.

 The results are shown below.

Green density difference in white area Treatment 2A 0.02 Treatment 2B 0.01 Treatment 2C 0.09 The replenishment amount at the start of treatment in Treatment 2A 60 days later is as follows:
600 ml / m ² , and the replenishment rate in treatment 2B was 600 ml / m ² , treatment
Replenishing amount of 2C was 0~80ml / m ^2.

Example 3 In the treatments 2A and 2B of Example 2, instead of using three washing tanks, a washing tank as shown in FIG. 7 was applied to treat (capacity of washing water per room: approx. 100ml). The transmittance sensor is DIGITAL CHROMI manufactured by Johoku Kikai Co., Ltd.
Using C METER MODEL JCM-11W, T 0 was set to 80-90%. As in the case of Examples 1 and 2, the light transmittance was detected by receiving a processing signal of the light-sensitive material, and the washing water was replenished before the washing processing was started.

Such processing is referred to as processing 3A and 3B, respectively, according to processing 2A and 2B.

In treatments 3A and 3B, the same treatment was performed using a washing tank having the same configuration except that the light transmittance sensor was not installed.

 This is referred to as processing 3C.

In the above processes 3A, 3B, and 3C, running was performed under the same conditions as in Example 2, and the processed photosensitive material was examined for occurrence of dyeing in the same manner.

 The results are shown below.

Green density difference on white background Treatment 3A 0.03 Treatment 3B 0.03 Treatment 3C 0.15 As in Example 2, the replenishment amount at the start of treatment after 60 days was as follows.

In the processing 3A 60 ml / m ² treated 3B 60 ml / m ² treated 3C 0~20ml / m ² above processing 3B, Fig. 4 to 30 minutes prior to receiving the processed signal of the photographic material is processed as the processing in operation . That is, it is assumed that there is no additional replenishment after receiving the processing signal of the photosensitive material. This is referred to as processing 3B '. Regarding this, the result of examining the occurrence of dyeing in the same manner as described above is shown below.

Green density difference in white background Processing 3B '0.06 From the results of Processing 3B and 3B', it can be seen that the effect of preventing dyeing is greater when the processing signal of the light-sensitive material is received and supplemented before water washing processing is performed.

<Effects of the Invention> According to the present invention, it is possible to easily and appropriately replenish washing water without waste. Therefore, the occurrence of dyeing is effectively prevented even in the low replenishment method, and good photographic properties can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a washing tank applied to the present invention. FIG. 2 is a graph for explaining the relationship between the light transmittance and the current value in the present invention. FIG. 3 and FIG. 4 are flowcharts showing a procedure for replenishing the washing water in the present invention. FIG. 5 is a schematic configuration diagram showing an arrangement of processing tanks when the washing tank of FIG. 1 is applied to a silver halide photographic copying machine. FIG. 6 is a schematic configuration diagram showing an arrangement of processing tanks when the washing tank of FIG. 1 is applied to an automatic developing machine for a minilab. FIG. 7 is a schematic configuration diagram showing a washing tank applied to the present invention. Description of reference numerals 1, 6… Rinse tank 20… Transparency sensor W… Rinse water

Claims (1)

(57) [Claims] When the silver halide light-sensitive material is subjected to a water-washing treatment using a water-washing tank having a continuous processing passage in which a plurality of processing chambers are sequentially connected by a narrow passage after the silver halide light-sensitive material is developed, the halogen is used. while replenishing the washing water in halide photosensitive material 1 m ² per 300ml less replenishing amount, it receives the processed signal of the silver halide light-sensitive material to detect the transparency of the washing water, the sensitizing dye according to the transparency A method for washing a silver halide light-sensitive material, wherein an additional replenishment of the washing water related to the amount is performed, and dyeing of the silver halide light-sensitive material is prevented by the additional replenishment of the washing water.