JPH0784341A - Washing water recycling method and device in processing of non-silver salt photosensitive material - Google Patents

Abstract

PURPOSE:To provide a treatment method and a treatment device keeping a washing process after development stable for a long period of time in the processing of non- silver salt photosensitive material by an automatic developing machine so as to eliminate printing soil caused by the soil of washing water and to reduce the quality of washing waste liquid, thereby reducing the disposal cost of washing waste liquid and improving the fouling of the automatic developing machine in the washing process and the plugging of a shower nozzle, which results in reducing cleaning time. CONSTITUTION:In this washing water treatment method, washing fatigue liquid used in the washing process in the processing of non-silver salt photosensitive material is chemically treated, then ion-exchanged by an ion exchanger 25 and returned to the washing process. At least a part of washing water of an automatic developing machine for non-silver salt photosensitive material having a washing part for circulating washing water for repeated use is taken out, and liquid and the solid part contained in the washing water are separated. The separated liquid is 1 returned to the washing part of the automatic developing machine for recycling, and disinfecting treatment is performed by a disinfecting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for processing a non-silver salt light-sensitive material, and more particularly to a method and apparatus for reclaiming washing water in the processing of a non-silver salt light-sensitive material by an automatic processor.

[0002]

2. Description of the Related Art Conventionally, the processing of a non-silver salt light-sensitive material, for example, a light-sensitive lithographic printing plate by an automatic developing machine, generally supplies a developing solution to the light-sensitive layer while conveying the light-sensitive lithographic printing plate. The photosensitive layer is subjected to a developing treatment for image-wise elution, and then a washing treatment for washing away the developing solution containing the eluate adhering to the plate surface to wash it off. Then, as the usage form of the washing water in the washing treatment, the water in the washing tank is sprayed from the shower nozzle onto the surface of the photosensitive lithographic printing plate to wash it, and the water used for washing is returned to the washing tank and circulated again. A method of using the method, a method of disposing of the washing water, or a method of supplementing the washing water to be used in a circulating manner with water according to a carry-in from the developing step, and the like are performed.

[0003]

However, these methods have the problems that the amount of washing waste liquid is large and the waste liquid recovery cost is high, and that the environment is polluted by the discharge into the sewer, and the washing water is circulated. When reused, water stains and sludge will accumulate in the washing water tank, the piping that circulates the washing water, and the shower nozzle, etc.If the washing water is not replaced frequently, the sludge will adhere to the printing plate and cause printing stains. There was a problem of letting it.

In order to solve the above-mentioned problems, the present applicant has proposed a treatment method in which the washing waste liquid discharged in the washing step is reprocessed, and the reclaimed water obtained is returned to the washing step and reused ( Japanese Patent Application 3-90239, Japanese Patent Application 3-10597, Japanese Patent Application 3-
No. 129391 and Japanese Patent Application No. 3-133329) have been published. However, in these methods, there is room for improvement in removing Ca ²⁺ , Al ^3+, etc., and by adding a neutralizing agent, etc., many ions are contained in the regenerated water,
This may cause precipitation in the washing tank, or ions may adhere to the plate surface of the photosensitive lithographic printing plate to cause stains during printing.

An object of the present invention is to develop a non-silver salt light-sensitive material by an automatic developing machine. Firstly, by keeping the washing process after development stable for a long period of time, a non-silver salt light-sensitive material free from stains. Secondly, it is to provide a treatment method and a treatment device, and secondly, to provide a treatment method and a treatment device which can reduce the amount of washing waste liquid, thereby reducing the treatment cost of the waste liquid. It is an object of the present invention to provide a processing method and a processing apparatus which eliminates the trouble of cleaning by improving dirt in a washing process of a developing machine and clogging of a shower nozzle.

[0006]

The constitutions of the present invention for achieving the above-mentioned objects of the present invention are as follows.

Washing water for a non-silver salt light-sensitive material, which is characterized in that the washing fatigue liquid used in the water-washing step in the processing step of the non-silver salt light-sensitive material is chemically treated and then ion-exchanged to return to the washing step. Regeneration processing method.

At least a part of rinsing water of an automatic developing machine for a non-silver salt photosensitive material having a circulating rinsing section is taken out to separate a solid content and a liquid contained in the rinsing water, and the separated liquid is again automatically developed. 2. A washing water treatment apparatus for returning to the washing section and reusing it, wherein the washing water treatment apparatus has a sterilizing means for the separated liquid.

At least a part of rinsing water of an automatic developing machine for a non-silver salt photosensitive material having a circulating rinsing section is taken out to separate a solid content and a liquid contained in the rinsing water, and the separated liquid is again automatically developed. The method for washing water for returning to the water washing section for reuse, wherein the liquid separated is sterilized by a sterilizing means.

The present invention will be described in detail below.

In the invention according to claim 1, as means for chemically treating the washing fatigue liquid, coagulation treatment and filtration treatment for filtering the coagulation treated washing fatigue liquid to separate into solid and liquid are preferable. . The aggregating treatment neutralizes rinsing water whose pH is increased or decreased by bringing in the photosensitive lithographic printing plate from the developing step, which is a pretreatment step of the water washing step, and agglomerates and separates at least a part of the contained components. The removal treatment includes a treatment in which at least one of the following treatments A, B, and C is applied to the washing fatigue liquid.

A. Neutralize by adding a neutralizing agent (hereinafter,
Also referred to as "neutralization treatment") B. Add flocculant.

C. As a preferred embodiment of the present invention in which a filter aid is added, a neutralizer, a coagulant, and a filter aid coagulation-treated liquid are filtered in a washing fatigue liquid, and a filter aid is added to washing water as a neutralization coagulation treatment. The aspect of adding is mentioned.

The neutralizing agent used in the neutralization treatment is sulfuric acid,
Acids such as hydrochloric acid, phosphoric acid, oxalic acid, citric acid, tartaric acid, calcium hydroxide, sodium hydroxide, potassium hydroxide,
An alkaline agent such as sodium carbonate can be used, and the pH of the washing water is preferably adjusted to 3-9 by neutralization treatment, more preferably 4-8.

Examples of the aggregating agent include inorganic aggregating agents such as aluminum sulfate, magnesium sulfate, polyaluminum chloride, basic aluminum sulfate, calcium chloride and magnesium chloride, polyacrylamide polymers, polyacrylic acid or salts thereof, and the following table. 1 to the compounds described in Table 3 can be mentioned. The addition amount is appropriately in the range of 0.1 to 20% by weight based on the washing fatigue liquid to be treated.

[0016]

[Table 1]

[0017]

[Table 2]

[0018]

[Table 3]

As the filter aid, diatomaceous earth, cellulosic aid, and other mineral aids (for example, pearlite)
Etc. are preferred. Commercially available filter aids are Radiolite # 100, # 700, # 800 (Showa Chemical Industry Co., Ltd.) as diatomaceous earth filter aids, and Fibra SW-10, BH-40 (as cellulosic filter aids). As a mineral-based filter aid other than diatomaceous earth (Japan) Co., Ltd., diatomaceous earth, Celite Hyflo Supercell (Japan diatomaceous earth Co., Ltd.), Topcopearlite # 36, # 37 (the same), carbon (activated carbon), asbestos, etc. Can be used. Two or more kinds of filter aids can be used in combination, and a preferred combination is a combination of a cellulosic filter aid and activated carbon. The addition amount of the filter aid is preferably in the range of 0.1 to 3% by weight with respect to the liquid to be treated, and more preferably equal to or half the residual amount of the liquid to be treated. The filter aid is preferably added at the same time as the addition of the neutralizing agent or before the addition of the neutralizing agent.

In the present invention, it is preferable to carry out activated carbon treatment before or after filtration of the coagulated liquid. For the activated carbon treatment, addition of activated carbon as a filter aid to washing water,
And an adsorption operation with activated carbon. For the adsorption operation using activated carbon, a known method of passing a liquid to be treated through an adsorption column filled with activated carbon can be applied.

When a reducing substance such as sulfite is present in the washing fatigue liquid, it is preferable to add an oxidizing agent.
Examples of the oxidizing agent include hydrogen peroxide, silver oxide, oxyacids (nitrous acid, nitric acid, permanganic acid, chromic acid, chloric acid, hypochloric acid, etc.) and salts thereof, air, oxygen, ozone, and oxygen. Examples thereof include compounds that easily give off. The amount of the oxidizing agent added may be at least a chemical equivalent to the amount of the reducing agent contained in the treatment waste liquid, and is usually in the range of 0.1 to 10% by weight.

Filtration of the coagulated water-washed fatigue liquid is
Centrifugal filtration, press filtration, suction filtration, decantation and the like can be applied, and centrifugal filtration is preferred. As the filter material, woven or non-woven fabric using filter paper, cotton cloth, polyethylene, polypropylene, polyester, nylon-6, aramid, Teflon, polyphenylene sulfide, etc. can be preferably used. If necessary, the filter material may be subjected to water-repellent treatment, antibacterial treatment or the like.

For the ion exchange of the invention according to the first aspect, known means can be applied by utilizing a cation exchange resin or by using both cation and anion exchange resins in combination. Examples of the polar group bonded to the cation exchange resin include a sulfo group, a carboxyl group, a sulfonyl group, a sulfuric acid ester group, a phosphoric acid ester group, and a phenolic hydroxyl group.As the polar group bonded to the anion exchange resin, Examples include so-called onium bases such as quaternary ammonium bases, sulfonium bases and phosphonium bases, and amines of tertiary or lower classes. Next, an apparatus for carrying out the invention according to claim 1 will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of an apparatus for carrying out the method of the present invention. P ₁ is an automatic developing machine for processing non-silver salt light-sensitive material, and the wash-fatigue solution which is reused by circulation and is exhausted is sent to the coagulation tank 3 by operating the pump 2, and a predetermined level is set by a liquid level sensor and a control mechanism (not shown). The operation of the pump 2 is stopped when the liquid is sent to the liquid level. In the coagulation tank 3, the treatment agent tank 5a
The oxidizing agent contained in the treating agent tank 5b is added by being sent by the pump 7, and then the neutralizing agent contained in the treating agent tank 5b is added to the pump 8
And sent to the washing fatigue liquid.

The addition of the neutralizing agent is such that the operation of the pump 8 is controlled by a control mechanism (not shown) so that the pH of the treatment waste liquid is adjusted within a predetermined range. 10 is a pH meter. On the other hand, at the same time as the addition of the neutralizing agent, the rotary feeder 14a collects the agglomerate contained in the treatment agent container 13a, and the rotary feeder 14b collects the filter aid and the activated carbon (powder) contained in the other treatment agent container 13b. A predetermined amount is added to each of the flushing fatigue liquid in the coagulation tank 3. 17 is a stirrer.

In this way, the oxidative agent, the neutralizing agent, the coagulant, the filter aid, and the activated carbon are added, and the washing fatigue liquid in which the dissolved components and colloidal components contained therein are aggregated is sent to the centrifugal filter 20 by the pump 19. Sent. The centrifugal filter 20 is centrifugally filtered into a filtrate and a residue by a rotating inner tank 21 and a filter cloth 22 mounted therein, and the filtrate is pumped by an ion exchanger by a pump 24.
After passing through 25, it is sent to the automatic processor P ₁ and reused as washing water. 23 is a motor for rotating the inner tank 21.

An embodiment of the processing apparatus of the invention according to claims 2 and 3 will be described with reference to the drawings. FIG. 2 shows claim 2.
It is a figure which shows the structure of one Example of the processing apparatus of the invention which concerns on. In FIG. 2, P ₁ is an automatic developing machine for processing a photosensitive lithographic printing plate, and P ₂ is a processing for circulating and using the automatic developing machine P ₁ to separate the washing water into a liquid and a solid. It is a washing water treatment device for performing.

In the automatic processor P ₁ , A is a developing section for developing, B is a washing section for washing with water, C is a finisher section for performing post-treatments such as rinsing treatment, desensitizing treatment (application of gum solution), D is a drying section for drying, and PS is a conveyance path for the photosensitive lithographic printing plate.

In the developing section A, 31 is a pair of carrying rollers or a carrying roller for carrying the photosensitive lithographic printing plate, 33 is a developing tank for immersion development, and 35 is a brush roller for accelerating the development. The lithographic printing plate is conveyed into the developing tank 34 by a pair of conveying rollers or the conveying roller 31, is immersed in the developing solution in the developing tank 33, the photosensitive layer surface is rubbed by the brush roller 35 to promote the development, and the non-image area The photosensitive layer is removed, squeezed by the squeeze roller 37a, and sent to the washing section B. To replenish the developer replenisher to the developing tank 33,
The concentrated developing replenisher in the concentrated developing replenisher tank 38 and the dilution water in the diluting water tank 39 detect the carry-in and carrying length of the photosensitive lithographic printing plate by a control mechanism (not shown), and send it at a predetermined amount and ratio. As a result, the operation of the metering pump 40 is controlled. 41 is a waste liquid tank.

In the rinsing section B, the rinsing water in the circulating rinsing tank 50 containing the rinsing water to be circulated is sprayed from the shower nozzle 52 onto the surface of the photosensitive lithographic printing plate by the pump 51 to rinsing the squeezing roller. Squeeze at 37b to finish washing with water. The photosensitive lithographic printing plate is then finished by the finisher section C,
A treatment liquid in a finisher liquid tank 60 containing a post-treatment liquid such as a rinse liquid and a desensitizing liquid (gum liquid) is supplied from a shower nozzle 62 to a plate surface by a pump 61, squeezed by a squeezing roller 37c, and then a drying unit. It is configured to be sent to D.

In the washing water treatment apparatus P ₂ , the aggregating tank 3 for neutralizing and aggregating the fatigued washing water in the circulating water washing tank 50 which is circulated and reused in the water washing section B of the automatic developing machine P ₁ by the pump 70.
Send to. At this time, the pump 70 is operated and the liquid transfer amount is such that when the integrated amount of the area of the photosensitive lithographic printing plate inserted into the automatic developing machine P ₁ reaches a predetermined amount, the pump 70 is operated and the liquid transfer amount is The operation of the pump 70 is controlled by a control mechanism (not shown) so that the amount corresponds to the integrated amount.

In the coagulation tank 3, when the washing fatigue liquid to be treated at one time is sent, the neutralizing agent contained in the treatment agent tank 5b is sent to the coagulation tank 3 by the pump 8 and the washing water in the tank is washed. Added to fatigue fluid. The operation of the pump 8 is controlled so that the addition of the neutralizing agent is adjusted to a predetermined pH range based on the pH value of the washing fatigue liquid measured by the pH meter 10. When an inorganic coagulant such as aluminum sulfate is used as the coagulant, it can also serve as a neutralizing agent.

In parallel with the above neutralization treatment, the treatment agent tank 6
The aggregating agent contained in a, the activated carbon contained in the treating agent tank 6b, and the hydrogen peroxide contained in the treating agent tank 5c are added in predetermined amounts by a feeding means such as a rotary feeder and a metering pump (not shown). It has become.
17 is a stirrer.

After a predetermined time after the addition of the neutralizing agent, the activated carbon and the hydrogen peroxide, the pump 19 is operated to send the washing water in the coagulation tank 3 to the centrifugal filter 20 for centrifugal filtration. In the centrifugal filter 20, a filtrate and a residue are centrifugally filtered by a rotating inner tank (not shown) and a filter material such as a filter cloth mounted inside thereof. Reference numeral 23 is a motor for rotating the inner tank. The filtrate flows into the filtrate tank 82 and is temporarily stored.
The filtrate in the filtrate tank 82 is filtered by a filter 84 by a pump 83 and returned to the circulating water washing tank 50 of the automatic processor P ₁ . Reference numeral 90 denotes an ultraviolet irradiation device, which is configured to irradiate the liquid filtered by the filter 84 with ultraviolet light.

The washing water treatment apparatus shown in FIG.
As indicated by the chain double-dashed line in the drawing, the separated liquid may be stored in the filtrate recovery tank 85 and then reused, instead of being directly returned to the automatic processor. In addition, the example of the apparatus for adding the four kinds of additives of the neutralizing agent, the coagulant, the activated carbon, and the hydrogen peroxide has been described above, but it goes without saying that the adding apparatus can be appropriately increased or decreased depending on the kind of the additive or the like. Is.

In the invention according to claim 3, the chemical treatment in the invention according to claim 1 can be used as a means for separating the solid content and the liquid contained in the wash water.

FIGS. 3 to 9 are views showing the schematic construction of an example of a device of sterilizing means in the invention according to claims 2 and 3.
3 to 7 show an example in which the liquid to be treated is irradiated with ultraviolet rays by an ultraviolet lamp. FIG. 3 shows that the liquid in the coagulation tank 3 is irradiated with ultraviolet rays by the ultraviolet lamp 91, and FIG. The liquid inside is sent to the ultraviolet irradiator 90 by the pump 92, and the ultraviolet lamp 91 irradiates it with ultraviolet light. FIG. 5 shows a centrifugal filter.
An ultraviolet lamp 94 is provided on the upper part of 20 to irradiate the liquid in the centrifugal filter 20 with ultraviolet rays. FIG.
Similar to the above, an ultraviolet lamp is provided, and in FIG. 7, the liquid in the filtrate recovery tank 85 is irradiated with ultraviolet rays in the same manner as in FIG. 8 and 9 show examples of treatment with ozone. FIG. 8 shows the liquid in the flocculation tank 3, and FIG. 9 shows the liquid in the filtrate recovery tank 85.
This is an example in which the ozone generated in (1) is jetted from a nozzle 98 provided at the tip of the pipe 97 and brought into contact with the liquid to sterilize it.
The pH meter provided in the coagulation tank 3 is not shown in FIGS.

As the ultraviolet irradiation device, SANITRON (manufactured by Sen Special Light Source Co., Ltd.) or UZON (manufactured by Sen Special Light Source Co., Ltd.) which is a sterilization device that uses both ultraviolet irradiation and sterilization by ozone can be used. The above SANITRON has a structure in which the UV lamp is protected by a quartz glass tube and the inside of the running water tank is made of precision polished stainless steel.
Has a double structure of an inner tube through which air flows around the ultraviolet lamp and an outer tube through which water flows, and the air passing through the inner tube changes from oxygen to ozone depending on the ultraviolet wavelength of 184.9 nm,
It is a device that dissolves it in water with an air diffuser at the bottom of the outer tube and sterilizes it with an ultraviolet wavelength of 253.7 nm.

An electrolytic sterilizer can be applied as the sterilizing means in the inventions according to claims 2 and 3. In electrolytic sterilization, when live cells come into contact with an electrode (anode), an electron transfer reaction occurs between the cells and the electrode, which causes an oxidation-reduction reaction of intracellular coenzymes due to the electrode reaction, which reduces the activity of the cells and kills microorganisms. As an electrolytic sterilizer, for example, Japanese Patent Laid-Open No. 3-22
Those described in each of the 4687 and 4-16284 publications can be used.

In the invention according to claim 3, as a means for separating the solid content and the liquid contained in the wash water, a combination of the coagulation method and the filtration method is preferable. For example, a method in which a neutralizing agent is added to the liquid to be treated, a filter aid and / or a coagulant is added to coagulate the liquid, and then the liquid is filtered is preferable. As the aggregating agent, it is preferable to use an inorganic aggregating agent such as casein, albumin, soybean protein, a cellulose derivative, a polyacrylamide-based polymer aggregating agent, aluminum sulfate, and polyaluminum chloride, and an inorganic aggregating agent and an organic aggregating agent. The combined use is more preferable.

The sterilizing means in the invention according to claim 3 is
Excluding administration of agents such as antiseptics, fungicides, and bactericides, preferably at least one selected from ultraviolet irradiation, ozone, heating, electrolytic sterilization, and magnetic field sterilization.

The rinsing water or rinsing fatigue liquid used in circulation to which the present invention is applied includes the following:
Photosensitive lithographic printing plate having a negative photosensitive layer using a diazo compound as a photosensitive substance, a photosensitive lithographic printing plate having a positive photosensitive layer using an o-quinonediazide compound as a photosensitive substance, and photo as a photosensitive substance. Washing water and washing fatigue liquid for photosensitive lithographic printing plates using a polymer.

More specifically, for example, JP-A-62-175757
No. 62, No. 62-24263, No. 62-24264, No. 62-25761, No. 62
-35351, 62-73271, 62-75535, 62-89060
No. 62, No. 62-125357, No. 62-133460, No. 62-159148,
62-168160, 62-175757, 62-75758, 62-2
38565, 63-188141, 63-200154, 63-2
Washing water and washing fatigue liquid produced by the treatment of a photosensitive lithographic printing plate as described in JP-A No. 05658 and JP-A No. 1-159654. For example, JP-A 1-149043 and JP-A 1-49043
No. 150142, JP-A-1-154157, JP-A-1-154158, etc., a photosensitive lithographic printing plate having a structure in which a photosensitive layer and a silicone layer as an ink repellent layer are laminated on a substrate. Generated washing water and washing fatigue liquid.

A photolithographic printing plate having a photoconductive layer on a support, a toner image is formed by an electrophotographic method, and then the photoconductive layer in the non-image area is removed to obtain a lithographic printing plate. Generated washing water and washing fatigue liquid. For example, JP-A-63-267954
No. 63-271481 and the like, rinsing water and rinsing fatigue liquid generated in the treatment of electrophotographic lithographic printing plates.

[0044]

EXAMPLES Next, examples of the invention according to claims 1 and 3 will be shown.

Example 1 PSZ-1315 (manufactured by Konica Corporation) was used as an automatic developing machine, SD-51 was used as a developing solution, and SD-51 was used as a developing replenishing solution.
R (both manufactured by Konica Corporation) is used to form a negative photosensitive lithographic printing plate SWN-X and a positive photosensitive lithographic printing plate KM.
A large number of sheets (both manufactured by Konica Corporation) were processed (development, washing with water and desensitization). The wash water (flush solution for washing) contained K ₂ SO ₃ as a reducing substance. The above treatment was carried out for 8 hours a day, and every 2 hours, 5 liters of the washing fatigue liquid in the washing tank was sent to the flocculation tank 3 of the apparatus shown in FIG. After the liquid transfer is completed, the stirrer 17 is rotated to add 5% by weight of hydrogen peroxide as an oxidizing agent, and then 9% of sulfuric acid as a neutralizing agent.
Add the aqueous solution until the pH reaches 4, and at the same time, treat agent container 13a
From aluminum sulfate 0.1% by weight, processing agent container 13b
From cellulose-based filter aid (manufactured by Nippon Diatomaceous Co., Ltd.).
1% by weight and 0.1% by weight of activated carbon (both with respect to the amount of liquid in the flocculation tank) were added, and the mixture was stirred for 10 minutes after the addition was completed.
Then, the water-washed fatigue solution treated as described above was centrifugally filtered, and the filtrate was ion-exchanged with a cartridge deionizer G-10 (manufactured by Yamato Scientific Co., Ltd.) and then returned to the water-washing tank for reuse. When this treatment was carried out, no strange odor (SO ₂ odor) was generated during the treatment of the water-washed fatigue liquid, and the ion-exchanged treatment liquid (regenerated water washing water) was colorless and transparent. When such a regenerating treatment was repeated for about one month, the washing water tank of the automatic processor was not contaminated, and the shower pipe, nozzle, etc. were not clogged, and stable treatment could be performed. Table 4 shows the washing water turbidity (measured with a HACH Ratio XR turbidimeter) in the circulating water washing tank at this time (after treatment for about 1 month) and the deposits on the PS plate treated with this washing water. The result of having investigated the adhesion is shown.

[0046]

[Table 4]

Example 2 PSK-910 (manufactured by Konica Corporation) was used as an automatic developing machine, SDR-1 was used as a developing solution, and SDR- was used as a developing replenishing solution.
A large number of positive type photosensitive lithographic printing plates KM (manufactured by Konica Corporation) were processed using 1R (both manufactured by Konica Corporation). The washing water (washing fatigue liquid) did not contain a reducing substance. When the same treatment as in Example 1 was carried out except that no oxidizing agent was used, the same results as in Example 1 were obtained. The results are shown in Table 5.

[0048]

[Table 5]

Comparative Example 1 The same experiment as in Example 1 was carried out except that the ion exchange was not carried out. As a result, a precipitate was formed in the washing water tank within 1 to 2 weeks, and this precipitation caused a shower nozzle for washing. Clogged.

Example 3 The amount of waste water for washing water after one month was compared with the presence or absence of the present invention (Example 1). The amount of waste water for washing water is shown in Table 6. The amount of waste liquid was small.

[0051]

[Table 6]

Comparative Example 2 An experiment was conducted in the same manner as in Example 1 except that ion exchange was not carried out. As a result, a precipitate was formed in the washing water tank within 1 to 2 weeks, and this precipitation caused a shower nozzle for washing with water. Clogged.

Example 4 PSZ-1315 (manufactured by Konica Corp.) was used as an automatic developing machine, SD-51 developer was used, and SD-51R (both manufactured by Konica Corp.) was used as a developing replenisher. Type photosensitive lithographic printing plate SWN-X and positive type photosensitive lithographic printing plate KM (both manufactured by Konica Corporation, plate size 1003 mm × 800 mm) were processed 100 times a day. For the gum treatment, SGW-2 (manufactured by Konica Corporation) was used.

5 liters of rinsing water circulated for one day was used as P ₂ in FIG.
It processed with the washing water processing apparatus shown in. However, the apparatus for adding hydrogen peroxide was omitted, and the separated liquid was collected in the filtrate collection tank 85.

Into the coagulation tank 3 shown in FIG.
5 g of aluminum sulfate was added from the treatment tank 6a, and activated carbon (manufactured by Nimura Chemical Co., Ltd., trade name S
After adding 15 g of GP), stir for 10 minutes, and then treat agent tank 5b
Further, 9% sulfuric acid was added at a pH of 10 until the pH became 6. The mixture was stirred at pH 5 for 10 minutes, and the flocculation liquid was sent to the centrifugal filter 20 by the pump 19 and filtered.

The filtrate is stored in the filtrate tank 82, and after the filtration is completed, the filtrate is filtered by the pump 24 (polypropylene: 20
After passing through the ultraviolet irradiation device 90 through a 0 μm mesh), it was returned to the circulating water washing tank 50 of the automatic processor P ₁ . UV irradiation conditions are: irradiation wavelength 253.7 nm, emission length 300 mm, illuminance 100 μW / c
m ² , and the liquid feed rate was 0.5 l / min.

When the above treatment was repeated for one month, there was no offensive odor of sludge in the centrifugal filter, no offensive odor in the aggregating tank and in the washing tank of the automatic processor, and no stain due to scale.

Example 5 The developing solution in Example 4 was SDR-1, and the developing replenisher was S.
DR-1R (both manufactured by Konica Corporation) was replaced with positive photosensitive lithographic printing plate KM (manufactured by Konica Corporation), and treated in the same manner as in Example 4.

Treatment was carried out in exactly the same manner as in Example 4 except that 5 liters of rinsing water which was circulated for one day was changed to 15 g / 5 liter of aluminum sulfate.

When the above-mentioned treatment was repeated for one month, there was no bad odor of sludge in the centrifugal filter, no bad odor in the flocculation tank and in the washing tank of the automatic processor, and no stain due to scale.

Example 6 A liquid obtained by coagulating and filtering in the same manner as in Example 4 was filtered.
It is stored in 82, and after filtration is completed, it is filtered by the pump 24 (the above)
Through, and do not return the solution directly to the washing tank of the automatic processor,
It was recovered in the filtrate recovery tank 85.

As shown in FIG. 7, the filtrate recovery tank 85 is provided with an ultraviolet sterilizer, which irradiates ultraviolet rays while circulating the filtrate with a pump. The ultraviolet irradiation conditions were an irradiation wavelength of 253.7 nm, an emission length of 300 mm, an illuminance of 100 μW / cm ² , and a liquid feed rate of 1 l / min for 5 minutes. The treated liquid was returned to the washing tank of the automatic processor by a pump (not shown).

When the above treatment was repeated for one month, there was no bad odor of sludge in the centrifugal filter, bad odor in the flocculation tank and in the washing tank of the automatic processor, and stains due to scale.

Example 7 Example 6 was repeated except that the ultraviolet ray irradiator was used in the filtrate recovery tank 85, and an ozone generator was attached as shown in FIG.
The washing water was treated in exactly the same manner as in. The amount of ozone is
It was set to be 0.2 ppm.

When the above treatment was repeated for one month, there was no offensive odor of sludge in the centrifugal filter, no offensive odor in the flocculation tank and in the washing tank of the automatic processor, and no stain due to scale.

[0066]

According to the present invention, the following effects (1) to (4) can be obtained in the development processing of a non-silver salt light-sensitive material by an automatic processor.

The washing process after development is kept stable for a long period of time, and printing stains due to stains on the washing water are improved.

It is possible to reduce the amount of the washing waste liquid, and thereby reduce the processing cost of the washing waste liquid.

By eliminating dirt and clogging of the shower nozzle in the water washing process of the automatic processor, the labor of cleaning can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an example of an apparatus for carrying out a processing method of the invention according to claim 1.

FIG. 2 is a configuration diagram showing an embodiment of a processing apparatus of the invention according to claim 2;

FIG. 3 is a diagram showing a schematic configuration of a sterilizing means according to the inventions of claims 2 and 3.

FIG. 4 is a diagram showing a schematic configuration of a sterilizing means according to the inventions of claims 2 and 3.

FIG. 5 is a diagram showing a schematic configuration of a sterilizing means according to the inventions of claims 2 and 3.

FIG. 6 is a diagram showing a schematic configuration of a sterilizing means according to the invention of claims 2 and 3.

FIG. 7 is a diagram showing a schematic configuration of a sterilizing means according to the inventions of claims 2 and 3.

FIG. 8 is a diagram showing a schematic configuration of a sterilizing means according to the inventions of claims 2 and 3.

FIG. 9 is a configuration diagram showing an example of a device of a sterilizing means according to the inventions of claims 2 and 3.

[Explanation of symbols]

3 Coagulation tank 5a, 5b, 6a, 6b Treatment agent tank 20 Centrifugal filter 50 Circulating water washing tank 82 Filtrate tank 84 Filter 85 Filtrate recovery tank 90 UV irradiation device 91, 94 UV lamp 96 Ozone generator P ₁ Automatic developing machine P ₂ Washing water treatment device A Developing section B Washing section C Finisher section D Drying section

Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication C02F 1/50 531 R 9045-4D 560 B 9045-4D C 9045-4D D 9045-4D E 9045-4D 1 / 72 ZAB Z 1/78 ZAB G03F 7/32 501 7124-2H (72) Inventor Takayuki Sugaiwa 1 Sakura-cho, Hino-shi, Tokyo Konica Stock Company In-house (72) Yutaka Adachi 1 Sakura-cho, Hino-shi, Tokyo Konica Stock Company In-house

Claims (3)

[Claims] 1. A non-silver salt light-sensitive material, comprising chemically treating a water-washing fatigue liquid used in a water-washing step of a non-silver salt light-sensitive material processing step, and then ion-exchanging the washed water. Washing water regeneration treatment method. 2. At least a part of washing water of an automatic developing machine for a non-silver salt light-sensitive material having a circulating water washing section is taken out, a solid content and a liquid contained in the washing water are separated, and the separated liquid is automatically re-automated. A washing water treatment apparatus for returning to the washing section of a developing machine for reuse, wherein the washing water treatment apparatus has a sterilizing means for the separated liquid. 3. At least a part of washing water of an automatic developing machine for a non-silver salt light-sensitive material having a circulating water washing portion is taken out, a solid content and a liquid contained in the washing water are separated, and the separated liquid is automatically re-automated. A method for treating washing water for returning to a washing section of a developing machine for reuse, wherein the separated liquid is sterilized by a sterilizing means.