JP2003015243A - Method and device for preparing chemical of photographic material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the chemical preparing method/device of a photographic material, which can shorten processing time in a filter device arranged in a stock tank from a preparing tank, or a chemical using tank from the stock tank or in the middle of process piping and can prepare chemical as much as possible. SOLUTION: In the preparing device of the various chemicals of the photographic material, a unit for detecting liquid run-out information in an air pressurizing unit and the base of the chemical preparing tank or a part of piping from the chemical preparing tank to the filter device is arranged in the chemical preparing tank existing at the upper part of the filter device. An operation for air-opening the internal pressure of the chemical preparing tank before pressurized air reaches the filter is controlled. When chemical prepared in the chemical preparing tank is moved to the chemical stock tank through chemical shift piping, a pressurization filtering processing for preventing foaming is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical solution preparation method and apparatus for photographic light-sensitive materials, and more particularly to a chemical solution preparation method and apparatus for various chemicals as part of the construction of an efficient production system for photographic light-sensitive materials. .

[0002]

2. Description of the Related Art In recent years, as the number of people who enjoy photography has increased in many countries around the world, the production volume has increased. It is important to classify small-volume production varieties as much as possible, and to increase the operating time of mass-production equipment as much as possible to increase production efficiency, reduce costs, and rationalize. When constructing such production equipment, it is important to reduce the equipment investment by increasing the operating efficiency of each equipment as much as possible, reduce the initial investment, and reduce the running cost. From this point of view, when looking at the chemical preparation process used in the photosensitive material manufacturing plant, the photographic light-sensitive material uses a large amount of chemicals in a specific layer; They are made at the same time; each chemical has an expiration date; it is a very special field where photographic performance is adversely affected if even small amounts are mixed together.

After the chemical solution of the chemical is prepared, in order to remove dust and impurities mixed in the raw materials due to the charging operation, a filtration operation using a filtration filter is required between the preparation of the chemical solution and the use of this chemical solution. Is. In such filtration, there is an optimum mesh for each chemical, and it is not allowed to roughen the mesh just because the filtration time is long. On the other hand, a chemical liquid of a chemical has various physical properties depending on its type, and in particular, it has viscosity as a physical property that contributes to the filtration rate, and the filtration time becomes longer as the viscosity becomes higher. Also, if you try to process a large amount of liquid, it will gradually clog and the effective filtration area will decrease.
The phenomenon that the filtration time becomes long occurs. As a means for solving such a problem, there is a means for increasing the filtration area,
Many types of filtration filters contain fine dust and impurities inside the mesh and are difficult to remove even after washing. Considering the cost of recycling, it is often cheaper to discard them. In the case of such a disposal method, increasing the number of filters leads to an increase in cost. In addition, if the liquid transfer time becomes long, including the subsequent cleaning, etc., it will affect the operation time, and it is required to transfer the liquid as quickly as possible. As such means, there is a method to reduce the filtration time by transferring with a pump etc. as a means to transfer at a constant pressure. When cleaning a plurality of chemicals in one preparation tank, there is a problem of contamination (contamination), which is not preferable.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method and apparatus for preparing a chemical solution for a photographic light-sensitive material, which overcomes the above problems. That is, 1) minimize the processing time from the preparation tank to the stock tank, or from the stock tank to the chemical solution use tank, or in the filtration device provided in the middle of the process pipe, 2) to share a plurality of chemical solutions Providing a transfer method that prevents contamination in the system, 3) filtering with as few filtration filters as possible.
It is an object of the present invention to provide a method and an apparatus for preparing a chemical solution for a photographic light-sensitive material, which can satisfy the above items and can prepare as many chemical solutions as possible.

[0005]

As a result of intensive studies by the present inventors, the above object of the present invention can be achieved by the following constitution. That is, the present invention is as follows. (1) A drug solution preparation tank for dissolving and preparing various chemicals, a drug solution stock tank for stocking the drug solution prepared in the drug solution preparation tank, a transfer pipe provided between the drug solution preparation tank and the drug solution stock tank, and a drug solution filtered In a chemical liquid preparation device for various chemicals of a photographic light-sensitive material equipped with a filtration device for processing, an air pressurizing unit and a chemical liquid preparation tank bottom part or a pipe from the chemical liquid preparation tank to the filtration device is installed in the chemical liquid preparation tank at the upper part of the filtration device. A unit that detects liquid shortage information is arranged in a part, and the operation of releasing the internal pressure of the chemical liquid preparation tank to the atmosphere before the pressurized air reaches the filtration filter is controlled, and the chemical liquid prepared in the chemical liquid preparation tank is stored in the chemical liquid stock. A method for preparing a chemical solution for a photographic light-sensitive material, which comprises performing a pressure filtration process that prevents foaming when transferring a solution to a tank through a transfer pipe. (2) A flow rate measurement unit is arranged in the middle of the transfer pipe to detect the filtration rate of the drug solution filtered by the filtering device, and the pressure of the drug solution preparation tank is controlled so that this flow rate is the intended flow rate. The internal pressure of the chemical solution preparation tank at the time is detected, and when the internal pressure reaches an arbitrary pressure lower than the pressure resistance of the filtration filter, the buffer tank or pipe installed downstream from the filtration device is pressurized so that the lower surface of the filter becomes normal. The reverse flow is generated, the clogging of the filter part is temporarily released, the upper tank is pressurized again, and the pressure is controlled while controlling the flow rate to a desired value. A method for preparing a chemical solution for a photographic light-sensitive material as described in (1) above. (3) The photograph as described in (1) or (2) above, wherein the chemical solution filtered by the pressure filtration treatment is a photographic gelatin aqueous solution, a photographic surfactant solution, and various chemical solutions for photographic addition. A method for preparing a chemical solution for a light-sensitive material.

(4) A drug solution preparation tank for dissolving and preparing various chemicals, a drug solution stock tank for stocking the drug solution prepared in the drug solution preparation tank, a transfer pipe provided between the drug solution preparation tank and the drug solution stock tank, and It has a filtering device for filtering chemical liquid, and detects liquid shortage information in the air pressurizing unit and the bottom of the chemical liquid preparation tank in the chemical liquid preparation tank at the top of the filtration device or in a part of the pipe from the chemical liquid preparation tank to the filtration device. The apparatus for preparing a chemical liquid for a photographic light-sensitive material, further comprising: a pressurizing / filtering unit having a mechanism for arranging the unit for releasing the internal pressure of the chemical liquid preparation tank to the atmosphere before the pressurized air reaches the filtration filter. (5) A flow rate measuring unit, a chemical solution preparation tank pressure control unit for controlling the flow rate, a chemical solution preparation tank internal pressure detection unit, an auxiliary tank or a transfer tube provided downstream of the filtering device are provided with air in the middle of the transfer tube. By arranging a pressure unit and applying a pressure to the filter of the filtering device from below, a flow reverse to the normal flow is generated, and the function of temporarily opening the clogging of the filter part is provided. (4) The chemical liquid preparation device for a photographic light-sensitive material as described above.

The method and apparatus for preparing a chemical solution for a photographic light-sensitive material according to the present invention comprises a pressure filtration treatment for preventing foaming, and a flow opposite to the normal flow is generated on the lower surface of the filter to temporarily clog the filter portion. By opening and performing the pressure filtration process again, the filtration process of the chemical solution can be made more efficient, and the filtration can be performed with the least number of filtration filters;
Reduced filtration time and made it easier to plan operation;
The cleaning performance of the transfer system is improved, and contamination (contamination)
There is no concern about the problem, and it is possible to shorten the cleaning time.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The method and apparatus for preparing a chemical solution for a photographic light-sensitive material of the present invention will be described in detail below. The means for dealing with the current problems will be explained. The present invention is provided with a stirrer necessary for dissolving the chemical in the chemical liquid preparation tank, and a temperature control device if necessary, and after the chemical is dissolved and processed, the liquid is transferred to the chemical stock tank by piping. In the method of filtering treatment of chemicals by installing a filtration device that can install a replaceable filtration filter in the middle of the process, pressurizing means to transfer the chemical solution from the chemical solution preparation tank, and the filtration filter section for detecting the residual liquid. In order to prevent bubbles from being generated by passing gas into the tank, a sensor is installed to detect liquid shortage in the tank or piping, and the pressurization condition is set to atmospheric pressure before the gas passes through the filtration filter section. In a filtration system characterized by having a means for returning, the pressure or a predetermined pressure is set for the pressure resistance of the filtration filter, and when the pressure is exceeded, the pressurization of the chemical preparation tank is stopped, Installs a flow meter in the middle of the pipe, controls the pressurizing pressure so that this flow rate becomes constant, and when this pressure reaches a specified pressure, conversely, in the chemical stock tank or in the transfer pipe immediately before the stock tank. This is a liquid transfer method that makes it possible to improve the filtration treatment efficiency by pressurizing the filter to remove foreign substances, dust, etc. clogged in the filter from the filter surface and then pressurizing the preparation tank again.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram showing an apparatus 1 to which the method for preparing a chemical solution for a photographic light-sensitive material according to the present invention is applied. In the process of preparing a chemical solution used in the production process of a photographic light-sensitive material, a chemical liquid preparation tank 4 using a tank material having a low activity so as not to affect photographic performance with respect to various chemicals for preparing a plurality of chemicals And the chemical liquid stock tank 5 for storing the chemical liquid prepared here is connected by a liquid transfer pipe 8, and a filter device 6 is installed in the middle of the liquid transfer pipe 8 and the filter device 6
The air pressure port 2 and the bottom of the chemical liquid preparation tank 4 or the chemical liquid preparation tank 4 at the top of the
A unit 10 for detecting liquid shortage is disposed in a part of the pipe 8 up to, and a mechanism for opening the internal pressure of the chemical liquid preparation tank 4 to the atmosphere before the pressurized air reaches the filtration filter 6 is provided. Prepared drug solution in drug solution stock tank 5
At the time of transferring the liquid through the liquid transfer pipe 8, a pressure filtration process that prevents foaming is performed to shorten the time required for the filtration process.

Further, a flow meter 11 is disposed in the middle of the liquid transfer pipe 8 in order to detect the filtration speed of the chemical solution filtered by the filtration device 6, and the chemical solution preparation tank pressure is adjusted so that this flow rate will be the intended flow rate. 2, the internal pressure of the chemical liquid preparation tank 4 at this time is detected, and when the internal pressure reaches an arbitrary pressure equal to or lower than the pressure resistance of the filtration filter, the pressurizing port 3 of the buffer tank 7 installed downstream from the filtration device 6 is controlled. Or, by pressurizing the pipe, a flow opposite to the normal flow is generated on the lower surface of the filter, the clogging of the filter part is temporarily opened, the chemical liquid preparation tank 4 is pressurized again, and while controlling to an arbitrary flow rate. Repeat pressurization, pressurize filtration,
Make the filtration process more efficient.

As the constituent elements, various methods such as an ultrasonic method, a dielectric method and an electrode method are commercially available as the liquid shortage sensor of the liquid shortage detecting device 10. If the timing at which the gas passes through the pipe can be detected. Any method can be used. In addition, there are various flow rate measurement methods,
Various methods such as a mass flowmeter, an electrode flowmeter, and an ultrasonic flowmeter are known as the flowmeter 11 method for measuring the flow rate, and a balance, a load cell, etc. are known as the method for measuring the mass. Any method is applicable as long as the flow rate can be measured with a predetermined accuracy. Regarding the buffer tank 7, foreign matter clogged in the filtration filter,
It is for passing a certain amount of filtered liquid in order to remove dust and the like, but depending on the volume of the filtering device, for example, when the housing capacity of the filtering filter is 1 liter, about several times that amount of liquid was applied to the tank. Foreign matter, dust, etc. may be removed from the filtration surface by flowing in the opposite direction with pressure by the three-way valve 9.

The photographic light-sensitive material, which is various chemicals to be dissolved and prepared by using the chemical solution preparing method and apparatus for the photographic light-sensitive material of the present invention, will be described. The photographic light-sensitive material may have at least one light-sensitive layer provided on the support. As a typical example, a silver halide photographic light-sensitive material having on a support at least one light-sensitive layer composed of a plurality of silver halide emulsion layers having substantially the same color sensitivity but different sensitivities. Is. The photosensitive layer is a unit photosensitive layer having color sensitivity to any of blue light, green light, and red light, and in a multilayer silver halide color photographic light-sensitive material, the arrangement of the unit photosensitive layers is generally Red-sensitive layer in order from the support side,
The green-sensitive layer and the blue-sensitive layer are installed in this order. However, the order of installation may be reversed depending on the purpose, or the order of installation may be such that different photosensitive layers are sandwiched between the same color-sensitive layers. A non-photosensitive layer may be provided between the above-described silver halide photosensitive layers and as the uppermost layer and the lowermost layer. These may contain a coupler, a DIR compound, a color mixing inhibitor, etc. described later. The plural silver halide emulsion layers constituting each unit photosensitive layer are composed of two layers, a high sensitivity emulsion layer and a low sensitivity emulsion layer, as described in DE 1,121,470 or GB 923,045.
It is preferable to arrange them so that the photosensitivity becomes lower toward the support. In addition, JP-A-57-112751 and JP-A-62-20
No. 0350, No. 62-206541, No. 62-206543
As described in, the low-sensitivity emulsion layer may be provided on the side farther from the support and the high-sensitivity emulsion layer may be provided on the side closer to the support.

As a specific example, from the side farthest from the support,
Low sensitivity blue photosensitive layer (BL) / High sensitivity blue photosensitive layer (BH) / High sensitivity green photosensitive layer (GH) / Low sensitivity green photosensitive layer (GL) / High sensitivity red photosensitive layer (RH) / Low sensitivity red photosensitive layer (RL) order, or BH / BL / GL / GH / RH / RL order, or BH / BL / GH /
It can be installed in the order of GL / RL / RH. In addition,
As described in JP-A-55-34932, the blue-sensitive layer / GH / RH / GL / RL may be arranged in this order from the side farthest from the support. Also, JP-A-56-25738 and 62-6
As described in Japanese Patent No. 3936, the blue-sensitive layer / GL / RL / GH / RH may be arranged in this order from the side farthest from the support. Further, as described in JP-B-49-15495, the upper layer is a silver halide emulsion layer having the highest sensitivity,
The middle layer is a silver halide emulsion layer having a lower photosensitivity, and the lower layer is a silver halide emulsion layer having a lower photosensitivity than the middle layer. The photosensitivity is gradually reduced toward the support. An arrangement composed of three layers can be mentioned. Even when it is composed of three layers having different sensitivities, as described in JP-A-59-202464, a medium-sensitivity emulsion layer from the side distant from the support in the same color-sensitive layer. / High-speed emulsion layer / low-speed emulsion layer may be arranged in this order. In addition, the layers may be arranged in the order of high-speed emulsion layer / low-speed emulsion layer / medium-speed emulsion layer, or low-speed emulsion layer / medium-speed emulsion layer / high-speed emulsion layer. Also, in the case of four or more layers, the arrangement may be changed as described above. USP 4,663,271, USP 4,705,744, USP 4,707,43 to improve color reproducibility
6, mainly using a donor layer (CL) having a multi-layer effect having a spectral sensitivity distribution different from that of the main photosensitive layers such as BL, GL, and RL described in JP-A-62-160448 and 63-89850. It is preferably arranged adjacent to or in proximity to the photosensitive layer.

The preferred silver halide used in the photographic light-sensitive material is silver iodobromide, silver iodochloride, or silver iodochlorobromide containing about 30 mol% or less of silver iodide. Particularly preferred is silver iodobromide or silver iodochlorobromide containing from about 2 mol% to about 10 mol% silver iodide. The silver halide grains in a photographic emulsion are those having regular crystals such as cubes, octahedra and tetradecahedrons, those having irregular crystal shapes such as spheres and plates, twin planes, etc. It may have a crystal defect of, or a composite form thereof. The grain size of silver halide may be fine grains of about 0.2 μm or less or large grains having a projected area diameter of up to about 10 μm, and may be a polydisperse emulsion or a monodisperse emulsion. The silver halide photographic emulsion is, for example, Research Disclosure (hereinafter, R
No.17643 (December 1978), pp. 22-23, "I.
Emulsion preparation and types ", and No. 18716 (November, 1979), 648, No. 307105 (19).
1989, 863-865, and Graphide, Physics and Chemistry of Photography, published by Paul Montel (P.Glafkides, Chi.
mie et Phisique Photographiques, Paul Montel, 196
7), "Photoemulsion Chemistry" by Duffin, published by Focal Press (GF Duffin, Photographic Emulsion Chemistr
y, Focal Press, 1966), "Production and Coating of Photographic Emulsions" by Zelikmann et al., published by Focal Press (VL Zelikman,
et al., Making and Coating Photographic Emulsion, F
Ocal Press, 1964) and the like. The monodisperse emulsions described in USP 3,574,628, 3,655,394 and GB 1,413,748 are also preferable. Further, tabular grains having an aspect ratio of about 3 or more can be used in the present invention. Tabular grains are described in Gutoff, Photographic Science and Engineering,
Volume 14, Pages 248-257 (1970); US 4,434,226, 4,41.
4,310, 4,433,048, 4,439,520 and GB 2,112,15
It can be easily prepared by the method described in 7. The crystal structure may be uniform, may have different halogen compositions inside and outside, or may have a layered structure. Silver halides having different compositions may be joined by epitaxial joining, and may be joined with a compound other than silver halide such as silver rhodanide and lead oxide. Also, a mixture of particles having various crystal forms may be used.

The above-mentioned emulsion may be either a surface latent image type which forms a latent image mainly on the surface, an internal latent image type which is formed inside the grain or a type which has a latent image on both the surface and the inside. Must be a type of emulsion. Among the internal latent image type emulsions, core / shell type internal latent image type emulsions described in JP-A-63-264740 may be used, and the preparation method thereof is described in JP-A-59-133542. . The thickness of the shell of this emulsion varies depending on the development process etc., but is 3-40 nm.
Is preferable, and 5 to 20 nm is particularly preferable. As the silver halide emulsion, those which are physically ripened, chemically ripened and spectrally sensitized are usually used. Additives used in such a process are described in RD No. 17643, RD No. 18716 and RD No. 307105, and the corresponding portions are summarized in the table below. For the light-sensitive material, two or more kinds of emulsions having different characteristics of at least one of the grain size, grain size distribution, halogen composition, grain shape, and sensitivity of the photosensitive silver halide emulsion are mixed and used in the same layer. be able to. US Pat. No. 4,082,553, the surface of which is covered with silver halide grains, US Pat.
98, JP-A-59-214852, wherein the internally fogged silver halide grains and colloidal silver are applied to a photosensitive silver halide emulsion layer and / or a substantially non-photosensitive hydrophilic colloid layer. Preferably. The fogged silver halide grain inside or on the surface means a silver halide grain which enables uniform (non-imagewise) development regardless of the unexposed area and exposed area of the light-sensitive material. , Its preparation method is described in US Pat. No. 4,626,498 and JP-A-59-214852. The silver halide forming the inner core of a core / shell type silver halide grain having a fogged inside may have a different halogen composition. As the silver halide whose inside or surface is fogged, any of silver chloride, silver chlorobromide, silver iodobromide and silver chloroiodobromide can be used.
The average grain size of these fogged silver halide grains is preferably 0.01 to 0.75 .mu.m, more preferably 0.05 to 0.6 .mu.m. The grain shape may be regular grain or polydisperse emulsion, but monodispersity (at least 95% of the weight or number of silver halide grains has a grain size within ± 40% of the average grain size). It is preferable that

It is also preferable to use non-photosensitive fine grain silver halide. The non-photosensitive fine grain silver halide is a fine grain of silver halide which is not exposed to light during imagewise exposure for obtaining a dye image and is not substantially developed in the development process, and it is preferable that it is not fogged in advance. . The fine grain silver halide has a silver bromide content of 0 to 100 mol%, and may optionally contain silver chloride and / or silver iodide. Preferably silver iodide
0.5 to 10 mol% is contained. Fine grain silver halide has an average grain size (average value of circle equivalent diameter of projected area) of 0.
01 to 0.5 μm is preferable, and 0.02 to 0.2 μm is more preferable. The fine grain silver halide can be prepared by a method similar to that for ordinary photosensitive silver halide. The surface of the silver halide grain does not need to be optically sensitized nor spectrally sensitized. However, prior to adding this to the coating liquid, it is preferable to add a known stabilizer such as a triazole-based, azaindene-based, benzothiazolium-based, mercapto-based compound or zinc compound in advance. Colloidal silver can be contained in the fine silver halide grain-containing layer. Coated silver amount of the light-sensitive material of the present invention is preferably 6.0 g / m ² or less, 4.5 g / m ² or less is most preferred.

Photographic additives are also listed in the RD and the relevant locations are indicated in the table below.

[0018] (Types of additives) (RD17643) (RD18716) (RD307105) 1. Chemical sensitizer page 23 page 648 page right column page 866 2. Sensitivity enhancer page 648, right column 3. Spectral sensitizer, pages 23 to 24, page 648, right column, pages 866 to 868     Supersensitizer ~ 649, right column 4. Whitening agent page 24 page 647 page right column page 868 5. Light absorber, pages 25 to 26, page 649, right column, page 873     Filter ~ 650 page left column     Dye, ultraviolet     Line absorber 6. Binder 26 pages 651 pages left column 873 to 874 pages 7. Plasticizer, page 27, page 650, right column, page 876     lubricant 8. Coating aid, pages 26 to 27, page 650, right column, pages 875 to 876     Surfactant 9. Static 27 pages 650 pages right column 876-877 pages         Preventive agent Ten. Matting agent pp. 878-879.

Although various dye-forming couplers can be used in the light-sensitive material, the following couplers are particularly preferable. Yellow couplers: couplers represented by formulas (I) and (II) of EP 502,424A; couplers represented by formulas (1) and (2) of EP 513,496A (particularly Y-28 on page 18); EP 568,037A Claim 1
A coupler represented by the formula (I) in US Pat. No. 5,066,576, column 1, lines 45 to 55; a coupler represented by the formula (I) in JP-A-4-274425; Couplers; couplers according to claim 1 of EP 498,381A1 on page 40 (especially D-35 on page 18); formulas on page 4 of EP 447,969A1
A coupler represented by (Y) (especially Y-1 (page 17), Y-54 (41
)); US 4,476,219, column 7, lines 36-58, formulas (II)-(I
V) couplers (especially II-17, 19 (column 17), II
-24 (column 19)).

Magenta coupler; JP-A-3-39737
(L-57 (bottom right of page 11), L-68 (bottom right of page 12), L-77 (bottom right of page 13);
EP 456,257, A-4 -63 (page 134), A-4 -73, -75 (page 139);
EP 486,965 M-4, -6 (page 26), M-7 (page 27); EP 571,959A
M-45 (page 19); JP-A-5-204106 (M-1) (page 6); JP-A-4-362631, paragraph 0237, M-22. Cyan coupler: CX-1,3,4,5,1 of JP-A-4-204843
1,12,14,15 (pages 14 to 16); C-7, JP-A-4-43345.
10 (page 35), 34, 35 (37), (I-1), (I-17) (pages 42 to 43); General formula (Ia) of claim 1 of JP-A-6-67385 or (Ib)
A coupler represented by. Polymer coupler: P-1, P-5 (11 in JP-A-2-44345)
page). Examples of couplers in which the coloring dye has an appropriate diffusibility include US 4,366,237, GB 2,125,570, EP 96,873B, DE 3,2
Those described in 34,533 are preferable. The coupler for correcting the unwanted absorption of the color forming dye is a yellow-colored cyan coupler represented by the formulas (CI), (CII), (CIII) and (CIV) described on page 5 of EP 456,257A1 (especially on page 84). YC-86), the yellow colored magenta coupler ExM-7 (page 202) described in the EP,
EX-1 (page 249), EX-7 (page 251), magenta colored cyan coupler CC-9 (column 8), CC described in US 4,833,069
-13 (column 10), US 4,837,136 (2) (column 8), WO92 / 1
The colorless masking couplers of formula (A) of claim 1 of 1575 (in particular the exemplified compounds on pages 36 to 45) are preferred.

Examples of the coupler releasing a photographically useful group include the following. Development inhibitor releasing compound:
Compounds represented by formulas (I), (II), (III) and (IV) described on page 11 of EP 378, 236A1 (particularly T-101 (page 30), T-104 (page 31), T-11
3 (36 pages), T-131 (45 pages), T-144 (51 pages), T-158 (58 pages)), EP 4
Compounds represented by formula (I) on page 7 of 36,938A2 (especially D-49 (page 51)), compounds represented by formula (1) of EP 568,037A (especially (23) (page 11)), Compounds represented by formulas (I), (II) and (III) described on pages 5 to 6 of EP 440,195A2 (especially on page 29)
I- (1)); Bleach accelerator releasing compounds: compounds represented by formulas (I) and (I ') on page 5 of EP 310,125A2 (particularly (60) and (6 on page 61)
1)) and a compound represented by formula (I) in claim 1 of JP-A-6-59411 (particularly (7) (page 7); Ligand releasing compound: LIG-X described in claim 1 of US 4,555,478 Compounds represented (especially compounds on lines 21 to 41 of column 12); Leuco dye releasing compounds: compounds 1 to 6 of columns 3 to 8 of US 4,749,641; fluorescent dye releasing compounds: COUP-DYE of claim 1 of US 4,774,181 Compounds represented (especially columns 7-10)
Compounds 1 to 11); development accelerator or fogging agent releasing compounds: compounds represented by formulas (1), (2) and (3) of column 3, US Pat. No. 4,656,123 (particularly (I-22) of column 25) and EP 450,6
ExZK-2 on page 75, lines 36-38 of 37A2; Compounds that release a dye group only upon leaving: a compound of formula (I) of claim 1 of US 4,857,447 (especially Y- of columns 25-36). 1 ~
Y-19).

As the additives other than the coupler, the following are preferable. Dispersion medium of oil-soluble organic compound: JP-A-62-215272
P-3,5,16,19,25,30,42,49,54,55,66,81,85,86,93 (140〜
(P. 144); Latex for impregnation of oil-soluble organic compounds: US
Latex as described in 4,199,363; Oxidized developer scavenger: Formula (I) in columns 2, lines 54-62 of US 4,978,606.
A compound represented by the formula (especially I-, (1), (2), (6), (12) (columns 4 to 5), a formula of column 5 to line 10 of US Pat. No. 4,923,787 (particularly compound 1 (column 3) ); Antistain agent: EP 298
321A, page 4, lines 30-33, formulas (I)-(III), especially I-47,72, III-
1,27 (pages 24-48); Anti-fading agents: EP 298321A, A-6,7,2
0,21,23,24,25,26,30,37,40,42,48,63,90,92,94,164 (69
~ 118), US 5,122,444 columns 25-38 II-1 ~ III-2
3, especially III-10, EP 471347A, pages 8-12, I-1 to III-4,
II-2, US 5,139,931 columns 32-40, A-1 to 48, especially A-39,42; to reduce the use of color enhancers or color-mixing inhibitors Materials: EP 411324A, pages 5-24 I -1 ~ II-15, especially I-46; Formalin Scavenger: EP 477932A 24 ~
SCV-1 to 28 on page 29, especially SCV-8; Hardener: JP-A 1-21484
Column 1 of H-1,4,6,8,14, US 4,618,573 on page 17 of the publication No. 5
Compounds (H-1 to 5) represented by formulas (VII) to (XII) of 3 to 23
4), Compounds (H-1 to 76) represented by the formula (6) at the lower right of page 8 of JP-A-2-214852, particularly compounds described in claim 1 of H-14, US 3,325,287; Development inhibitor Precursor: JP Sho
62-168139, P-24,37,39 (pages 6-7); US 5,019,49
2 a compound as claimed in claim 1, especially column 7, 28,29;
Preservatives, fungicides: US 4,923,790 columns 3 to 15 I-1
~ III-43, especially II-1,9,10,18, III-25; Stabilizers, antifoggants: US 4,923,793, columns 6 to 16 I-1 to (14), especially I-1,60, (2), (13), US 4,952,483, columns 25-32, compounds 1-65, especially 36: chemical sensitizer: triphenylphosphine selenide, compound 50 of JP-A-5-40324; dye: JP-A-3 -156450, pages 15-18, a-1 to b-20, especially a-1,12,18,27,35,36, b-5,27-29, V-1 to 23, especially
V-1, EP 445627A, FI-1 to F-II-43, especially F- on pages 33 to 55
I-11, F-II-8, EP 457153A, pages 17 to 28, III-1 to 36, particularly III-1,3, WO 88/04794, 8 to 26, Dye-1 to 124, microcrystalline dispersion Compounds 1 to 22 on pages 6 to 11 of EP 319999A, especially compound 1, compounds D-1 to 87 (pages 3 to 28) represented by formulas (1) to (3) of EP 519306A, formula (US Pat. No. 4,268,622) Compounds 1 to 22 represented by I) (columns 3 to 10), compounds represented by formula (I) of US 4,923,788 (1) to (31) (columns 2 to 9);
UV absorber: Compounds (18b) to (18r), 101 to 427 (pages 6 to 9) represented by formula (1) of JP-A-46-3335, EP 520938A
Compounds (3) to (66) (pages 10 to 44) represented by Formula (I) and compounds HBT-1 to 10 (page 14), represented by Formula (III), EP
Compounds (1) to (31) represented by the formula (1) of 521823A (columns 2 to 9).

It can be applied to various color light-sensitive materials such as color negative films for general use or movies, color reversal films for slides or televisions, color papers, color positive films and color reversal papers. In addition, Japanese Patent Publication No.
It is suitable for the film unit with a lens described in Japanese Patent No. 39784.

[0024]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited thereto. [Example 1 and Comparative Example 1] Alkali-treated gelatin 140
1000 kg of ion-exchanged water was put into a prepared preparation tank, and the mixture was stirred at 60 ° C. for 1 hour to be dissolved. This gelatin aqueous solution has a viscosity of 105 cp (40 ° C)
Met. When transferring this gelatin aqueous solution to a storage tank provided below the floor, a filtration device having a 3 micron mesh (Fuji Film Co., Ltd. microfilter) was provided between the preparation tank and the stock tank, and the conventional gravity method was used. A comparative examination test was conducted on the filterability by the liquid transfer method and the pressure transfer method according to the present invention, particularly, the filtering time and the required number of filters.

First, an aqueous gelatin solution, which has been completely dissolved by the current method, was transferred to a stock tank by passing it through a filtration device by gravity transfer. At this time, the number of filters having a mesh of 3 microns was filtered with one filter, two filters, and three filters, and the time for transferring the entire amount and the transfer flow rate per minute were measured. As a result, the transfer time was 19 minutes when 3 tubes were used, 30 minutes when 2 tubes were used, and 65 minutes when 1 tube was used. Regarding the liquid transfer flow rate at this time, the flow rate tends to decrease as the liquid level in the preparation tank decreases as the amount of passage increases at any level. When comparing the flow rates when the remaining amount reached 10%, the flow rate was reduced by 30% or more.
After the completion of the liquid transfer, the surface of the filtration filter was observed. Although some undissolved gelatin was confirmed, it was not enough to clog the eyes of the filter. Next, as one mode of the method of the present invention, a pressure of 0.1 MPa was applied to the preparation tank, and the filtration time and the change in flow rate were observed. As a result, 12 minutes for 3 filters and 1 for 2 filters
The transfer was possible in 9 minutes and 38 minutes in one bottle. Further, the flow rate at the time of liquid transfer was measured, and the rate of decrease in the liquid transfer initial flow rate and the liquid transfer rate near the end was within 10%, which was a satisfactory result as compared with the above conventional method.

[0026]

As described above, the method and apparatus for preparing a chemical solution for a photographic light-sensitive material of the present invention comprises a pressure filtration treatment which prevents foaming, and a flow reverse to the normal flow on the lower surface of the filter, By temporarily releasing the clogging of the part and performing the pressure filtration process again, the filtration process of the chemical liquid can be made more efficient, and the filtration can be performed with the least number of filtration filters; the filtration time is shortened. As a result, it becomes easier to make an operation plan; the cleaning performance of the liquid transfer system is improved, the concern of contamination (contamination) is eliminated, and the cleaning time can be shortened.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an apparatus showing one embodiment of the method of the present invention.

[Explanation of symbols]

1 Chemical preparation device 2 Chemical preparation tank pressurizing port 3 buffer tank pressurizing port 4 Chemical preparation tank 5 Chemical stock tank 6 Filtration device 7 buffer tanks 8 Transfer pipe 9 three-way valve 10 Liquid shortage detector 11 Flowmeter

Claims (5)

[Claims] 1. A drug solution preparation tank for dissolving and preparing various chemicals, a drug solution stock tank for stocking the drug solution prepared in the drug solution preparation tank, a transfer pipe and a drug solution provided between the drug solution preparation tank and the drug solution stock tank. In a drug solution preparing device for various chemicals of a photographic light-sensitive material equipped with a filtering device for filtering treatment, a drug solution preparing tank at the upper part of the filtering device is provided with an air pressurizing unit and a drug solution preparing tank bottom part or a drug solution preparing tank to a filter device. A unit that detects liquid shortage information is arranged in a part of the pipe, and the operation of releasing the internal pressure of the chemical liquid preparation tank to the atmosphere before the pressurized air reaches the filtration filter is controlled, and the chemical liquid prepared in the chemical liquid preparation tank is controlled. A method for preparing a chemical solution for a photographic light-sensitive material, which comprises performing a pressure filtration process that prevents foaming when transferring the solution to a chemical solution stock tank through a transfer tube. . 2. A flow rate measurement unit is arranged in the middle of the transfer pipe to detect the filtration rate of the chemical solution filtered by the filtration device, and the chemical solution preparation tank pressure is controlled so that this flow rate will be the intended flow rate. The internal pressure of the chemical solution preparation tank at this time is detected, and when the internal pressure reaches an arbitrary pressure lower than the pressure resistance of the filtration filter, the buffer tank or piping installed downstream from the filtration device is pressurized to the bottom surface of the filter. A flow opposite to the normal flow is generated, the clogging of the filter part is temporarily released, the upper tank is pressurized again, and the pressure is controlled while controlling the flow rate to a desired value,
The method for preparing a chemical solution for a photographic light-sensitive material according to claim 1, wherein pressure filtration processing is performed. 3. The chemical solution filtered by the pressure filtration treatment is a gelatin aqueous solution for photography, a surfactant solution for photography, and various chemical solutions for photography addition.
Alternatively, the method for preparing a chemical solution for a photographic light-sensitive material as described in 2 above. 4. A drug solution preparation tank for dissolving and preparing various chemicals, a drug solution stock tank for stocking the drug solution prepared in the drug solution preparation tank, a transfer pipe and a drug solution provided between the drug solution preparation tank and the drug solution stock tank. Has a filtering device for filtering the liquid, and detects liquid shortage information in the chemical pressurization tank at the top of the filter device, at the bottom of the air pressurization unit and chemicals preparation tank, or in a part of the pipe from the chemical preparation tank to the filtration device. An apparatus for preparing a chemical liquid for a photographic light-sensitive material, comprising a unit for arranging a unit, and having a pressure filtration means having a mechanism for releasing the internal pressure of the chemical liquid preparation tank to the atmosphere before the pressurized air reaches the filtration filter. 5. A flow rate measuring unit, a chemical liquid preparation tank pressure control unit for controlling the flow rate, a chemical liquid preparation tank internal pressure detection unit, an auxiliary tank or a liquid transfer pipe provided downstream of the filtering device in the middle of the liquid transfer pipe. An air pressurizing unit is arranged, and by applying pressure from the bottom to the filter of the filtration device, a flow opposite to the normal flow is generated, and it has the function of temporarily opening the clogging of the filter part. The chemical liquid preparation device for a photographic light-sensitive material according to claim 4.