JP2584870B2 - Liquid supply method for photographic developing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid supply method for a photographic developing device for developing a photosensitive material after an image has been exposed.

(Background technology)

In a photographic developing device, when the photosensitive material is mainly a photosensitive material for printing such as photographic paper, the photosensitive material is sequentially inserted into a developing tank, a bleach-fixing tank, and a rinsing tank (a washing tank or a stabilizing tank) to be developed. ing. When the photosensitive material is mainly a photographic photosensitive material such as a negative film or a reversal film, a developing tank, a bleaching tank, a fixing tank, a washing tank, a stabilizing tank, or a developing tank, a bleaching tank, a bleach-fixing tank, The developer is sequentially inserted into a washing tank and a stabilizing tank to be developed. The developing tank, the bleaching tank, the fixing tank, and the bleach-fixing tank are replenished with a replenisher so that a decrease due to deterioration or evaporation of the processing liquid can be replenished. Therefore, overflowing processing liquid is discharged from these processing tanks.

Water (liquid) is also supplied to the washing tank or stabilizing tank so that the developing component and the bleach-fixing component are washed away from the photosensitive material, so that the washing water or the stabilizing solution is contaminated and replenished accordingly. The washing water or the stabilizing liquid is supplied, and the overflowing washing water is discharged.

The waste liquid from each of these processing tanks is preferably as small as possible because it is necessary to perform a special waste liquid treatment, but it is difficult to reduce the amount of waste liquid while maintaining a constant developing ability.

For the above purpose, Japanese Patent Application Laid-Open No. 57-157243 discloses a technique of inserting an overflow solution of a pre-rinse bath into a bath having a fixing ability as a pre-bath. The amount of the solution fluctuates, and as a result, the composition of the bleach-fix solution fluctuates, resulting in poor desilvering and undesired color contamination (stain), so that stable processing cannot always be performed.

The present invention has been made in view of the above-described circumstances, and has as its object to obtain a liquid supply method for a photographic developing apparatus that can reduce the amount of waste liquid and maintain stable processing while maintaining a predetermined processing capacity.

[Summary and Function of the Invention] The invention of claim (1) of the present application is a photographic development in which a photosensitive material after exposure is sequentially inserted into a developing tank, a bleach-fixing tank, a washing and / or stabilizing tank, and a developing process is performed. In the liquid supply method of the apparatus, the washing or stabilizing tank is provided in a plurality of tanks, and these are sequentially arranged in a photosensitive material conveying direction from a subsequent washing or stabilizing tank to a preceding washing or stabilizing tank in a photosensitive material conveying direction. The liquid is supplied countercurrently, and the liquid in the first-stage washing or stabilizing tank is taken out by a pipe and a pump, and the taken-out liquid is mixed with the bleach-fixing replenishing concentrate solution to replenish the bleach-fixing solution. A replenisher is supplied to the bleach-fix tank as a liquid concentration, and a liquid level sensor is provided in the foremost washing or stabilizing tank, and the last tank is provided so as to maintain the liquid level of this tank at a predetermined level. It is characterized by supplying washing water or stabilizing liquid to And

For this reason, in the present invention, the replenisher which was conventionally supplied to the bleach-fixing tank is supplied as a mixture of the concentrated processing liquid and the liquid from the water washing or stabilizing tank, and thus the replenisher was taken out from the water washing or stabilizing tank. The amount of waste liquid carried out from the tank is reduced by the amount of the liquid, thereby reducing the amount of waste liquid from the entire developing device.

When the amount of replenisher supplied to the last washing or stabilizing tank and the amount of liquid taken out from the first washing or stabilizing tank to the bleach-fixing tank are equal to or more than the same, the liquid level of the first washing or stabilizing tank. May decrease. For this reason, in the present invention, a liquid level sensor is provided in the forefront washing or stabilizing tank, and the forefront liquid level is maintained at a predetermined level. Activate the rinsing water or stabilizing liquid replenishment pump until the liquid level sensor reaches the detection level, or supply the rinsing water or stabilizing liquid for a certain amount of time or when the liquid level sensor detects a predetermined level. What should I do?

The invention according to claim (4) is a liquid supply method for a photographic developing apparatus in which a photosensitive material after exposure is sequentially inserted into a developing tank, a bleaching tank, a fixing tank, a washing tank, and a stabilizing tank to perform development processing. hand,
The washing tanks are provided in a plurality of tanks, and these are supplied countercurrently in the photosensitive material conveying direction from the rear washing tank to the preceding washing tank in the photosensitive material conveying direction to supply the liquid, and the liquid in the foremost washing tank is supplied. It is taken out by a pipe and a pump, and the taken out solution and the fixing replenishment concentration processing solution are mixed to supply a replenishing solution to the fixing tank as a replenishing solution concentration of the fixing solution, and the solution is supplied to the forefront washing tank. A surface sensor is provided to supply flush water to the last tank so as to maintain the liquid level in the tank at a predetermined level.

The invention according to claim (5) is a liquid supply method for a photographic developing apparatus in which a photosensitive material after exposure is sequentially inserted into a developing tank, a bleaching tank, a bleach-fixing tank, a washing tank, and a stabilizing tank to perform a developing process. A plurality of the washing tanks are provided, and these are supplied with liquid by sequentially flowing countercurrent in the photosensitive material conveying direction from the downstream washing tank to the preceding washing tank in the photosensitive material transport direction to the preceding washing tank, and supplying the liquid at the forefront washing tank. The solution inside is taken out by a pipe and a pump, and the taken-out solution is mixed with the bleach-fixing replenishing processing solution to supply a replenisher to the bleach-fixing tank as a replenisher concentration of the bleach-fixer. A liquid level sensor is provided in the forefront washing tank, and the washing water is supplied to the last tank so as to maintain the liquid level in this tank at a predetermined level.

Here, the invention of claim (1) is suitable when the photosensitive material is a photosensitive material for printing such as photographic paper, and the inventions of claims (4) and (5) are such that the photosensitive material is a negative film, reversal film or the like. It is suitable when the photosensitive material for photographing is used. Regarding claims (4) and (5), the amount of waste liquid from the washing tank is reduced by the amount of liquid taken out from the washing tank to the immediately preceding processing tank.

(Example of the invention)

As shown in FIG. 1, a photographic developing device 10 according to this embodiment
Is particularly suitable for developing a photosensitive material for printing such as photographic paper.The inside of the main body 12 is partitioned by a plurality of partition walls, and a developing tank P ₁ , a bleach-fix tank P ₂ , a washing tank W ₁ , W ₂ , W ₃ is provided.

The developer in the developing tank P ₁ is, bleach-fixing solution in the bleach-fixing tank P ₂ is filled in each washing tank from washing tank W ₁
Each washing water is filled in the W _3. In each of these tanks, there is provided a known conveying means (not shown) mainly including a nipping and conveying roller for sequentially inserting the photosensitive material into these processing tanks. Therefore, after the image is exposed, the photosensitive material is a developing tank P ₁ , a bleach-fix tank P ₂ , a washing tank W ₁ ,
Through W _2, W ₃ becomes a dry product after processing of a series of development were made.

Replenishment processing liquid 14 from a not-shown processing solution replenishing apparatus to the developing tank P ₁ is supplied by the supply amount A, the surplus amount is adapted to be discharged by the liquid amount a is an overflow processing solution 16.

Bleach-fixing tank Similarly replenished processing solution 18 also to P ₂ is supplied by the supply amount B, are discharged overflow processing solution 22 only liquid amount b, and sufficiently constant at all times the amount of the processing liquid bleach-fixing tank P ₂ by this It is compensated for having a high processing capability.

To washing tank W ₃ being adapted to be supplied by the opening of the processing liquid from the replenishing water tank 24 is a pipe 25 and pump 26, the washing water in the washing tank W ₃ being washing tank overflows
To W _2, further the washing water in the washing tank W ₂ is moved in the direction opposite to the traveling direction of the photosensitive material is supplied to the washing tank W ₁ overflows, washing tank W ₁ overflow washing water 28 is discharged Is done. This washing tank W ₃ which is the final process step of the photosensitive material is always fresh washing water are supplied. Tap water or ion-exchanged water 32
Is supplied and a constant amount is always filled. Also a washing tank
Washing water of W ₂ is adapted to be supplied circulate into washing tank W ₃ after being purified by the purification apparatus 34 of the reverse osmosis or the like, if necessary.

Here, in this embodiment, the replenishment liquid 18 is supplied to the replenishment liquid tank.
And it is formed by mixing water with replenishing concentrate treatment liquid 44 in the 42 and washing water taken from washing tanks W _1. That is, the processing solution replenishment of the bleach-fixing tank P ₂ is determined by a control device (not shown), replenishing concentrate treatment liquid 44 from the processing solution replenishing amount x supplied to the bleach-fixing tank P ₂ through the pipe 46 and a pump 48 It is, which the washing water of the washing tank W ₁ at the same time supply amount y is fed through a pipe 52 and pump 54. The total amount of the processing solution replenishment amount x and the supply amount y is the processing solution replenishment amount B,
The ratio between the processing solution replenishment amount x and the supply amount y is determined by the bleach-fixing tank P ₂
Is determined by the control device to be equal to the concentration of the replenisher.

 Next, the operation of the present embodiment will be described.

At the start of the development work is regulated to a predetermined temperature by the heater which the developing tank P ₁ (not shown), the light-sensitive material (not shown) is sent to the sequential processing tanks from the developing tank P _1. Developing solution in the developing tank P ₁ along with the movement of the photosensitive material is reduced is brought into the bleach-fixing tank P within ₂ of a photosensitive material together with evaporated. For this reason, the replenishment processing solution 14 is replenished, and the processing solution that has overflowed due to this replenishment is the overflow processing solution.
It is discharged as 16.

Treatment liquid bleach-fixing tank P ₂ similarly be supplied with replenishment processing liquid 18 due to the reduced or degraded excess treatment liquid is discharged as an overflow processing solution 22. In this case, in this embodiment, the replenishment treatment liquid 18 is a mixture of the replenishment concentration treatment liquid 44 and the washing water, and their ratio is the difference between the pump discharge amounts of the pump 48 and the pump 54 (the pump discharge amounts are the same). changing the operating time is adjusted to the same concentration as the replenisher of the bleach-fixing tank P ₂ by also may). While washing water is taken out from the washing tank W _1, the washing water is obtained by flowing through the overflow through the washing tank W _1, W _2, washing water into washing tank W ₃ being supplied from the replenishing water tank 24 .

Bleach-fixing bath from the washing tank W ₁ than wastewater c when the amount of washing water discharged Therefore the washing tank W ₁ by an overflow washing water 28 is not considered the washing water taken out from the washing tank W ₁ into the bleaching-fixing tank P ₂ running low by the supply amount y to be taken out by to P ₂ pipe 52.

Table 1 shows a conventional example and a comparative example in this embodiment.

Replenishing amount and discharge amount to the bleach-fixing tank P ₂ as in Table 1 is not changed even with the conventional example and the present embodiment, namely a bleach-fixing tank P ₂
The replenishment amount supply B to the processing solution replenishment amount x of the replenishment concentration processing solution 44
And the supply amount y of the rinsing water for dilution, whereas the supply amount y of the rinsing water for dilution is conventionally supplied separately from the tap water or the replenishment water tank, whereas the rinsing tank in the present embodiment W ₁
It is taken out from the area and is washed. The washing tank W ₁ whereas the overflow washing water 28 to be discharged was washing water c in a conventional fed overflows from rinsing tank W ₂ from, in this example the bleach-fixing tank P ₂ from the
The supply amount y taken out as the washing water for dilution is a subtracted amount, and the drainage amount is reduced.

Thus the discharge amount of the overflow washing water 28 from the washing tank W ₁ is reduced in comparison with the prior art, also becomes very small total wastewater volume of the liquid volume a and b, the load is reduced to give the wastewater treatment facility.

Amount of washing water to be taken out of the washing tank W ₁ is always maintained at the maximum amount the liquid level of the washing tank W ₁ is the case significantly less than the amount of water supplied from replenishing water tank 24 to the washing tank W ₃ Therefore, no consideration is necessary. That is, the replenishment amount x of the replenishment concentration processing solution 44 changes according to the area (m ² ) of the photosensitive material surface of the photosensitive material to be processed, and is generally 50 to 100 ml / m ² . Takeout supply from washing tank W ₁ whereas 50
A 200 ml / m ^2, the amount of water supplied from replenishing water tank 24 to the washing tank W ₃ being on the order of 300 to 400, no liquid level lowering of the washing tank W ₁ for normal light-sensitive material processing amount.

However, for example, if the purifier 34 is to be activated,
W ₃ replenishing water tank bleach-fixing tank P ₂ from wastewater and washing tank W ₁ supplied water quantity by overflowing washing water 28 by the amount of photosensitive material to be processed so reduced to about 120ml from 24 to
And a bring-out feed amount y may become many takeout supply from equal to or washing tank W ₁ to.

The liquid level sensor 56 provided in the washing tank W ₁ in this case, washing tank
Or level of W ₁ drives the pump 26 to constant values, the liquid level sensor 56 detects a predetermined water level pump 26 a predetermined time (hereinafter, "predetermined time" hereinafter) level ie washing tank W ₁ is constant value (e.g., washing tanks W ₁ overflow washing water 28 water level immediately before being discharged) consideration to supply a constant amount of operating only time until the washing tank W _3.

Figure 2 is always are shown the control flow to maintain the predetermined value or more liquid level of the washing tank W ₁ by the liquid level sensor 56.

That, is performed processing solution replenishment of the bleach-fixing tank P _2, is actuated liquid level of the washing tank W ₁ there is the pump 26 becomes smaller than a predetermined value by taking out the liquid from the washing tank W ₁ to the washing tank W ₃ Rinse water is supplied from the makeup water tank 24 (steps 150 and 15).
2). The washing water overflowed from the washing tank W ₃ to W _2, W ₁ thereby, when the liquid level washing tank W ₁ is returned to the original water level is sensed water level of the liquid level sensor pump 26 is stopped, the developing When the operation of the device is stopped, the control ends (steps 150, 154, 156).

In the case shown in FIG. 3, when the liquid level sensor 56 detects that the liquid level of the washing water has decreased to a constant value (step 15).
8) The pump 26 operates for a predetermined period of time to supply a certain amount of washing water (steps 160, 162,
164) so as to prevent the liquid level lowering of the washing tank W _1. From washing tank W ₁ Thus there may be a case where the washing water overflows. Also in this case, the operation of the developing device is stopped, and the control ends.

Next, FIG. 4 shows a second embodiment of the present invention.
This embodiment is suitable when the photosensitive material to be processed is a photosensitive material for photography such as a negative film or a reversal film. A bleaching tank P ₃ and a fixing tank P ₄ are provided downstream of the developing tank P ₁ , and washing tanks W ₁ , W ₂ , and W ₃ are provided downstream of the fixing tank P _4.
And a stabilization tank S.

Replenishment processing liquid 14A from the developing tank P ₁ and not shown in the same manner the processing solution replenishing apparatus supplied by the supply amount D, the excess amount is discharged by the liquid amount d becomes the overflow processing solution. 16A to bleaching tank P ₃ It has become.

Similar to the bleach-fixing tank P ₂ in the example to the fixing tank P ₄ in this embodiment, replenishment processing solution having a predetermined concentration by mixing with washing water taken from the water washing tank W ₁ and the filling concentrate treatment liquid 44 Is supplied. Thus, emissions from washing tanks W ₁ in this embodiment is made smaller than (c-y), and the conventional wastewater c.

Further, when the water level in the washing tank W ₁ is lowered, the pump 26
The is operated, the same is that it supplies the washing water into the washing tank W ₃ from replenishing water tank 24.

Next, FIG. 5 shows a third embodiment of the present invention.
This example also be suitable for the development processing of the second embodiment and the photosensitive material for photographing, such as negative film or a reversal film as well, the second embodiment and the bleaching tank downstream of the developing tank P ₁ similarly P ₃ is provided, the stabilizing tank S is disposed downstream of the washing tank W _3. However, mixing of the first embodiment and the bleach-fixing tank P ₂ are arranged in the same manner the first embodiment similarly to replenish the concentration treatment liquid 44 downstream of the bleaching tank P ₃ and washing water from washing tank W ₁ Liquid is supplied and has the same effect.
Other structures and controls are the same as in the first embodiment.

Note separately the bleach-fixing tank P ₂ or the fixing tank and washing water taken out from the washing tank W ₁ and replenishing concentrate treatment liquid 44 in the above embodiments
Supplied to P _4, it is described the structure to mix them in a bleach-fixing tank P ₂ or the fixing tank P _4, replenishing concentrate processing liquid washing water
And 44 and supplies to the bleach-fixing tank P ₂ or the fixing tank P ₄ were mixed in the tube is inserted through both the Y-section tube, fed to the washing water and replenisher concentrate treatment liquid 44 in advance to separate replenishing tank in other supply structure for supplying to the bleach-fixing tank P ₂ or the fixing tank P ₄ were mixed in the replenishing tank can also be applied.

〔The invention's effect〕

The present invention has an excellent effect of reducing the amount of waste water from the bleach-fixing tank because it has the above-described structure.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a developing apparatus to which the present invention is applied, FIG. 2 is a flow chart for supplying washing water according to an embodiment, and FIG.
The drawings are flow charts for supplying rinsing water according to another embodiment, and FIGS. 4 and 5 are conceptual views showing a developing device to which the second and third embodiments of the present invention are applied. W ₁ , W ₂ , W ₃ … washing tank, P ₁ … developing tank, P ₂ … bleach-fix tank, P ₃ … bleach tank, P ₄ … fixing tank, S… stabilizing tank, 10 …… Photo developing equipment, 18 …… Replenishment processing liquid, 28 …… Overflow washing water, 44 …… Replenishment concentration processing liquid, 46 …… Piping, 48 …… Pump, 52 …… Piping, 54 …… Pump, 56… ... Liquid level sensor.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Fujita 210 Nakanuma, Minamiashigara-shi, Kanagawa Fujisha Shin Film Co., Ltd. (56) References JP-A-57-157243 (JP, A)

Claims (5)

(57) [Claims] 1. A method according to claim 1, wherein the photosensitive material after the exposure is a developing tank, a bleach-fixing tank,
A method for supplying a liquid to a photographic developing apparatus, which sequentially inserts into a washing and / or stabilizing tank to perform a developing process, wherein the washing or stabilizing tank is provided in a plurality of tanks, and these are washed or stabilized at a later stage in a photosensitive material conveying direction. The liquid was supplied by sequentially countercurrently flowing the photosensitive material from the tank to the preceding washing or stabilizing tank in the transport direction of the photosensitive material, and the liquid in the first washing or stabilizing tank was taken out by a pipe and a pump, and was taken out. A replenisher is supplied to the bleach-fixing tank as a replenisher concentration of the bleach-fixer by mixing the solution and the bleach-fixer replenisher / concentrator, and a liquid level sensor is provided in the forefront washing or stabilizing tank. A liquid supply method for a photographic developing device, comprising supplying washing water or a stabilizing liquid to the last tank so as to maintain the liquid level in the tank at a predetermined level. 2. The photograph according to claim 1, wherein the supply of the washing water or the stabilizing liquid to the last washing or stabilizing tank is performed until the liquid level is detected by the liquid level sensor. Liquid supply method for developing device. 3. The method according to claim 1, wherein the supply of the washing water or the stabilizing liquid to the last washing or stabilizing tank is performed only for a predetermined time by detecting the liquid level of a liquid level sensor. A liquid supply method for a photographic developing device. 4. A method for supplying a photosensitive material after exposure to a developing tank, a bleaching tank, a fixing tank, a washing tank, and a stabilizing tank in which a developing process is performed by sequentially inserting the photosensitive material into the developing tank. These are provided in a plurality of tanks, and these are supplied in such a manner that the liquid is supplied in such a manner that the photosensitive material is transported in a countercurrent flow direction from the downstream washing tank to the preceding washing tank in the conveying direction of the photosensitive material, and the liquid in the forefront washing tank is connected to a pipe and a pump. The replenished solution is supplied to the fixing tank as a replenishing solution concentration of the fixing solution by mixing the taken-out solution and the fixing replenishing concentration processing solution, and a liquid level sensor is provided in the forefront washing tank. A liquid supply method for a photographic developing apparatus, wherein washing water is supplied to the last tank so as to maintain the liquid level of the tank at a predetermined level. 5. A method for supplying a photosensitive material after exposure to a developing tank, a bleaching tank, a bleach-fixing tank, a washing tank, and a stabilizing tank, in which the photosensitive material is subjected to a developing process. A plurality of tanks are provided, and these are supplied in such a manner that the liquid is supplied in such a way that the photosensitive material is transported in a countercurrent flow direction from the downstream washing tank to the preceding washing tank in the conveying direction of the photosensitive material, and the liquid in the forefront washing tank is connected to the piping and the washing tank. The replenisher is supplied to the bleach-fixing tank as a replenisher concentration of the bleach-fixer by mixing the taken-out liquid with the bleach-fixer replenisher / concentrator and taken out by the pump. A liquid supply method for a photographic developing device, comprising providing a liquid level sensor and supplying washing water to the last tank so as to maintain the liquid level in the tank at a predetermined level.