JPH0462657B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a developing tank used in developing photosensitive films for industrial and medical use.

[Conventional technology]

2. Description of the Related Art In dental clinics, research institutes, and the like where photosensitive films are developed relatively frequently, a developing tank having a wide opening at the top is usually used.

Since the processing solutions (developers, fixers, etc., hereinafter simply referred to as processing solutions) stored in these processing tanks are used relatively frequently, it is cumbersome to return them to the sealed container each time they are used. Therefore, they are usually left in a developing tank or the like.

[Problem that the invention seeks to solve]

Generally, the characteristics of the processing solution used for development deteriorate with the number and frequency of development processing, so in order to obtain stable development effects, it is necessary to manage specific changes in these processing solutions and replenish or replenish them in a timely manner. As mentioned above, if the processing solution is used or left in a developing processing tank with a wide opening at the top, it will come into contact with the atmosphere at the surface and be oxidized, causing its characteristics to deteriorate. As the speed is accelerated, the time for replenishment and replacement is lost, resulting in valuable images becoming unclear.

On the other hand, the processing liquid adhering to the surface of processing equipment such as tanks and rollers dries and solidifies or crystallizes when it comes into contact with the atmosphere, causing problems such as damage to the processing film and processing equipment. For this reason, for example, if the upper opening of a container such as a tank containing the processing solution is simply narrowed in an attempt to suppress deterioration of the processing solution due to oxidation at the liquid surface, the processing solution pulled up along with the photosensitive film will rise. It adheres around the opening and dries and solidifies or crystallizes on the liquid surface in that area, causing a problem that the surface of the photosensitive film entering and leaving the upper opening is damaged.

The present invention can solve the above problems, that is, first, it can suppress deterioration due to oxidation on the liquid surface of the processing liquid to be accommodated, and also prevent dry solidification and crystallization on the liquid surface of the processing liquid. A second object of the present invention is to provide a developing tank that can easily and reliably maintain the characteristics of the processing liquid contained therein.

[Means for solving problems]

In order to achieve the above object, the present invention has the following configuration. That is, the developing tank according to the first aspect of the present invention has a liquid chamber containing a developing solution therein, and has a slit-shaped opening in the upper part thereof through which the photosensitive film can be inserted and taken out, and a slit-shaped opening in which the photosensitive film can be taken in and out. is submerged in water, and the development processing tank according to the second invention has, in addition to the structure of the first invention,
A processing liquid supply port is provided below the opening, and the developing processing tank according to the third invention has, in addition to the structure of the first invention, the liquid chamber through which the photosensitive film can pass. It is divided into a plurality of chambers by a slit-like constriction, and a processing liquid supply port is provided in the lowest chamber.

[Effect]

In the first aspect of the present invention, the liquid chamber containing the processing liquid is provided inside, and the opening provided at the upper part of the liquid chamber is submerged in water, so that the processing liquid contained in the liquid chamber and the opening are submerged in water. This prevents contact with the atmosphere, preventing oxidation at the liquid surface and drying, solidification, and crystallization at the opening.

Since the opening is in the form of a slit through which the photosensitive film can be inserted and removed, the contact area of the processing liquid contained in the liquid chamber with the submerged water is narrowed, and diffusion and mixing at the interface with the submerged water is suppressed.

In addition, in the second invention, since the processing liquid supply port is provided below the opening,
When a new processing liquid is supplied from the supply port, this new processing liquid pushes out the processing liquid existing above the supply port in the liquid chamber, that is, a part of the existing old liquid, through the opening and discharges it. It is mixed with the existing old solution to restore some of the characteristics of the processing solution in the solution chamber. Also,
The processing liquid pushed out from the opening is diluted by mixing with the submerged water above the opening.

Furthermore, in the third aspect of the invention, the liquid chamber is divided into a plurality of chambers by the narrowed part of the slit through which the photosensitive film can pass, and the processing liquid supply port is provided in the lowest chamber. When a new processing liquid is supplied from the supply port provided in the lowest chamber, this new processing liquid cannot quickly mix with the entire existing processing liquid in the liquid chamber, and may cause multiple chambers to be mixed. The existing treatment liquid is then pushed upward in sequence.
Therefore, as this new processing liquid is supplied, the existing old solution is sequentially discharged from the upper opening, ensuring that the characteristics of the processing liquid in the liquid chamber are restored.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

First Embodiment FIG. 1 is a front sectional view illustrating the concept of a developing tank according to an embodiment of the first invention.

In FIG. 1, 1 is a container, and the container 1
The apparatus is provided with a liquid chamber for accommodating a processing liquid 7 therein, and a slit-shaped opening 2 through which a film 4 is inserted and taken out is provided above the liquid chamber and projects upward.

3 is a water tray, and the water tray 3 is a container 1.
It is arranged above to surround the opening 2 and has a side wall height that can maintain the water level of the submerged water 8 injected therein higher than the upper end of the opening 2.

According to the development tank having the above configuration,
By pouring submerged water 8 into the water tray 3 and covering the opening 2 of the container 1 with a water layer, contact between the treatment liquid 7 filled in the container 1 and the atmosphere is blocked, and the treatment liquid 7 is oxidized. It is possible to prevent characteristic deterioration due to

Since the processing liquid 7 has a higher specific gravity (about 1.2) than water, the processing liquid 7 filled in the container 1 stays in the container 1 due to the difference in specific gravity with the submerged water 8.
By filling the container 1 with the processing liquid until it reaches the slit-shaped opening 2, the contact area with the submerged water 8 can be narrowed, and diffusion mixing at the interface between the processing liquid 7 and the submerged water 8 can be suppressed. Moreover, since the opening 2 is also covered with the submerged water 8, drying, solidification and crystallization of the processing liquid 7 around the end of the opening 2 can be completely prevented.

In this embodiment, the water tray 3 is disposed above the container 1 so as to surround the opening 2, and the submerged water 8 is injected into the water tray 3 to cover the opening 2 with water. Instead, a water tank is arranged in which the entire container 1 is housed, the upper end of the opening is higher than the upper end of the opening 2 of the container 1, and water is poured into the tank to cover the opening 2. In addition, the water tank may be provided with a heating means such as an electric heater, and by heating the water in the tank, the processing liquid in the container can be controlled to a temperature suitable for development processing. It is also desirable to be considered as such.

Second Embodiment FIG. 2 is a front sectional view illustrating the concept of a developing tank according to an embodiment of the second invention.

In Figure 2, 1 is a container, 2 is an opening, 3 is a water tray, 4 is a film, 7 is a processing liquid, and 8 is a submerged water tank, which is the same as shown in Figure 1 above. So, I will omit the explanation here.

Reference numeral 5 denotes a liquid supply pipe, which is provided near the bottom of the container 1 and communicates with processing liquid supply means (not shown).

According to the development tank having the above configuration,
In addition to the effect described in the first embodiment obtained by injecting submerged water 8 into the water tray 3 and covering the opening 2 of the container 1 with water, an appropriate amount of submerged water 8 is added each time or as needed during development processing. By supplying a small amount of new processing liquid 7 into the container 1 through the liquid supply pipe 5 while injecting it into the water tray 3 and causing it to overflow, the old processing liquid existing in the upper part of the liquid supply pipe 5 in the container 1 can be removed. A part of the treatment liquid 7 can be pushed out from the opening 2 toward the water tray 3 and mixed with the existing old treatment liquid 7 to partially restore its properties. The processing liquid 7 pushed out to the water tray 3 side can be mixed and diluted with water and the submerged water 8 of the lay 3 and discharged together with the submerged water 8.

Third Embodiment FIG. 3 is a front sectional view illustrating the concept of a developing tank according to an embodiment of the third invention.

In FIG. 3, reference numeral 10 denotes a container, and the container 11 is formed in a U-shape with a liquid chamber for accommodating a processing liquid 17 therein. The liquid chamber is divided into a plurality of chambers by a slit-shaped constricted portion 16 through which the film 14 can pass, and the liquid chamber is divided into a plurality of chambers by a slit-shaped narrowing portion 16 through which the film 14 can pass. It is provided in the liquid pipe 15.

Reference numeral 10 denotes an aquarium, which accommodates and supports two containers 11 with openings 12 and 13 facing each other. opening 1
The openings 12 and 13 are made higher than the upper ends of the openings 12 and 13, so that the water level of the submerged water 18 injected therein can be maintained higher than the upper ends of the respective openings 12 and 13.

According to the development tank having the above configuration,
The effect described in the first embodiment obtained by injecting submerged water 18 into the water tank 10 and covering each opening 12 and 13 of each container 11 with water, and the effect described in the first embodiment obtained by injecting submerged water 18 into the water tank 10 and covering the openings 12 and 13 of each container 11 with water, and In addition to obtaining the effect described in the second embodiment of partially recovering the characteristics of the processing liquid 17 in the container 1 by supplying a small amount of new processing liquid 17, when supplying the new processing liquid 17, This new processing liquid 17 is transferred to the existing processing liquid 17 in the container 11 which is divided into a plurality of chambers by the slit-like constriction part 16.
Since the existing processing liquid 17 cannot be mixed quickly with the whole and is pushed upward sequentially through multiple chambers, the supply of this new processing liquid 17 causes the existing old processing liquid 1 to
7 and sequentially from the upper openings 12 and 13, it is also possible to obtain the effect of more reliably recovering the characteristics of the processing liquid 17 in the container 11.

Then, one of the two containers 11 is filled with the developer, the other is filled with the fixer, and the third container 11 is filled with the developer.
By passing the film 14 successively through the twin containers 11 as shown in the figure, it is possible to continuously develop a long film.

Note that in this embodiment, the narrowed portion 16 of the container 11
This can be done, for example, by arranging a pair of film feed rollers to form a constriction, or by disposing a partition plate with slit-like holes. Other constriction methods, such as forming a narrow section, may be applied, and it is also desirable to provide a stirring means in the chamber divided by each narrow section to ensure the development process.

And also, the container can be a single-chamber U with no constriction.
Even if the film is shaped like a letter, it is possible to continuously develop a long film.

[Effects of the Invention] As described above, the development processing tank according to the present invention has the following effects:
This makes it possible to suppress deterioration due to oxidation of the processing liquid contained therein, prevent dry solidification and crystallization on the liquid surface of the processing liquid, and prevent damage to the photosensitive film. Moreover, it has a great practical effect in that it can be effectively partially replaced and that the characteristics of the processing liquid used can be easily and reliably controlled.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view explaining the concept of a developing tank according to an embodiment of the first invention, FIG. 2 is a front sectional view explaining the concept of a developing tank according to an embodiment of the second invention, and FIG. FIG. 7 is a front sectional view illustrating the concept of a developing tank in an embodiment of the third invention. 1... Container, 2... Opening, 3... Water tray,
4...Film, 5...Liquid supply pipe, 7...Processing liquid,
8...Flooding, 10...Aquarium, 11...Container, 1
2, 13...opening, 14...film, 15...
...Liquid supply pipe, 16... Constriction part, 17... Processing liquid, 1
8...Flooding.

Claims (1)

[Scope of Claims] 1. A liquid chamber containing a developing solution is provided in the interior, and a slit-shaped opening is provided in the upper part of the chamber through which a photosensitive film can be inserted and removed. Characteristic developing processing tank. 2. A liquid chamber containing a developing processing solution is provided inside, and a slit-shaped opening is provided at the upper part of the chamber through which a photosensitive film can be inserted and removed. A developing processing tank characterized by being provided with a liquid supply port. 3. A liquid chamber containing a developing solution is provided inside, and a slit-shaped opening is provided at the upper part of the liquid chamber through which a photosensitive film can be inserted and removed. 1. A developing processing tank characterized in that it is divided into a plurality of chambers by a slit-like constriction through which the processing liquid can be supplied, and a processing liquid supply port is provided in the lowest chamber.