JPH01166041A - Developing processing tank - Google Patents

Abstract

PURPOSE:To suppress the degradation of a stored processing liquid due to oxidation on the liquid surface and to prevent the processing liquid from being dried and solidified or crystallized on the liquid surface by providing a liquid chamber in which the developing processing liquid is stored and providing aperture parts, through which a photosensitive film can be taken in and out, on and under this chamber. CONSTITUTION:The liquid chamber in which a processing liquid 7 is stored is provided, and an aperture part 2 provided on this liquid chamber is submerged, and the lower end of this aperture part 2 is immersed in a separating liquid 9 whose specific gravity is larger than that of the processing liquid 7. Consequently, the upper liquid surface of the processing liquid 7 stored in the liquid chamber and the upper aperture part 2 are insulated from air by a submerging layer 8, and the lower liquid surface and a lower aperture part 3 are insulated from air by the separating liquid 9. Thus, the processing liquid 7 is prevented from being oxidized on upper and lower liquid surfaces and being dried and solidified or crystallized in upper and lower aperture parts 2 and 3.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a developing tank used for developing exposed photosensitive film, and in particular, a developing tank suitable for use in developing a long photosensitive film. This relates to processing tanks.

[Conventional technology]

2. Description of the Related Art A developing tank containing a developing solution used in dental clinics and research institutes where photosensitive films are developed relatively frequently has a surface that comes into contact with the atmosphere.

The developing processing solution (
Developing solutions, fixing solutions, etc. are hereinafter simply referred to as processing solutions. ) are used relatively frequently, so it is cumbersome to return them to the sealed container each time they are used, and they are usually left in a developing tank or the like.

[Problem that the invention seeks to solve]

In general, the processing solution used for development is
As the characteristics of the processing liquid deteriorate with frequency, in order to obtain stable development effects, it is necessary to manage changes in the characteristics of the processing liquid.
It is necessary to replenish or replace the processing liquid in a timely manner, but as mentioned above, if the processing liquid is used or left in a developing tank that has a liquid surface that comes into contact with the atmosphere, the processing liquid will deteriorate due to contact with the atmosphere at the liquid surface. Because it is oxidized and its characteristics deteriorate at an accelerated rate, the time for replenishment and replacement is lost, resulting in valuable images becoming unclear.

On the other hand, processing liquid that adheres to the liquid surface of processing equipment such as developing tanks and rollers dries and solidifies or crystallizes when it comes into contact with the atmosphere. Moreover, these are hard and form small irregularities, so these are covered. This causes problems such as damaging the processing film and processing equipment.

In particular, when a long film is continuously processed, the processing liquid that accompanies the film and is pulled up to the liquid surface dries and solidifies or crystallizes and accumulates around the transfer path of the film, and these are deposited on the film to be processed. Frequent cleaning of these parts is required because they damage the parts and peripheral equipment.

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 maintain the characteristics of the developer contained therein.

[Means for solving problems]

In order to achieve the above object, the present invention has the following configuration. That is, the development processing tank according to the first invention is:
It has a liquid chamber containing a developing solution inside, and has slit-like openings at its upper and lower parts through which photosensitive film can be inserted and removed.The upper opening is flooded with water, and the lower opening is The lower end is immersed in a separated liquid having a higher specific gravity than the developing processing solution, and a developing processing solution supply port is provided between the upper and lower openings, and the developing processing according to the second invention In addition to the structure of the first invention, the tank has the liquid chamber divided into a plurality of chambers by a slit-like constriction through which the photosensitive film can pass, and the supply port for the development processing liquid is located at the lowest part of the liquid chamber. It was installed in a room located at

[Effect]

In the first invention, the liquid chamber is provided with a liquid chamber for storing the processing liquid therein, and the upper part of the opening provided in the upper part of the liquid chamber is submerged with water, and the lower end of the upper part of the opening has a specific gravity higher than that of the processing liquid. Since it is immersed in the separated liquid, the upper liquid level and the upper opening of the processing liquid stored in the liquid chamber are exposed to the submerged layer, and the upper liquid level and the lower opening are exposed to the atmosphere due to the separated liquid. This prevents the processing liquid from being oxidized at the upper and lower liquid levels, and from drying and solidifying or crystallizing at the upper and lower openings.

Since the upper and lower openings are slit-shaped through which the photosensitive film can enter and exit, the photosensitive film can be transferred from the upper opening to the lower opening, or vice versa, and react with the processing liquid in the liquid chamber. In addition, the contact area of the processing liquid in the liquid chamber with the submerged water at the upper opening and the contact area with the separation liquid at the lower opening are narrowed, and these submerged liquids are reduced. and diffusion mixing at the interface with the separated liquid is suppressed.

In addition, since a processing liquid supply port is provided between the upper and lower openings, when a new processing liquid is supplied from this supply port, this new processing liquid is transferred to the supply port in the liquid chamber. The processing liquid existing in the upper part, that is, a part of the existing old liquid is pushed out through the upper opening and is discharged, and is mixed with the existing old liquid to partially restore the characteristics of the meat processing liquid in the liquid chamber. Also,
The processing liquid pushed out and discharged from the upper opening mixes with the submerged water above the upper opening and is diluted.

In addition, in the second aspect of the present invention, the liquid chamber is divided into a plurality of chambers by a slit-like constriction through which the photosensitive film can pass, and the supply port for the development processing liquid is located at the lowest part of the liquid chamber. Therefore, when a new processing liquid is supplied from the processing liquid supply port provided in the lowest chamber, this new processing liquid is added to the existing processing liquid in each liquid chamber. The existing processing solution can be quickly mixed with the whole, and the existing processing solution is sequentially pushed upward through multiple liquid chambers. Therefore, as this new processing solution is supplied, it is sequentially discharged from the upper opening than the existing old solution. This ensures that the characteristics of the processing liquid in the liquid chamber are recovered.

〔Example〕

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

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

In FIG. 1, (1) is a container, and the container (1)
is equipped with a liquid chamber for storing the processing liquid (7) inside, and has a slit-shaped upper opening (
2) is provided above (protruding), and a film (9) is provided at the bottom.
) is provided with a slit-shaped lower opening (3) protruding diagonally downward, and the upper and lower openings (2) (3)
A liquid supply pipe (4) is provided in the lower part between the two.

(5) is a water tray, and the water tray (5) is a container (
1) A side wall that is arranged above to surround the upper 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 upper opening [2]. It is.

(6) is a separated liquid tank, and the separated liquid tank (6) is arranged below two containers (1) arranged with their lower openings (3) facing each other. 1), and can maintain the liquid level of the separation liquid (9) injected into the container at a height that immerses each of the lower openings (3) of the container (1).

According to the developing processing tank having the above configuration, submergence (8) is injected into the water [ray (5) to cover the upper opening (2) with a water layer, and the separation liquid tank (6) By injecting a separation liquid (9) having a high specific gravity such as fluorocarbon into the container and immersing the lower opening (3), the processing liquid (7) filled in the container (1) is connected to the atmosphere. It is possible to block contact with the treatment liquid (7) and prevent oxidation of the treatment liquid (7), thereby preventing property deterioration due to oxidation.

The treatment liquid (7) has a higher specific gravity than water (around 1.2), and the separation liquid (9) has a higher specific gravity than the treatment liquid (7), so it is filled into the container (1). The processing liquid (7) remains in the container (1) due to the difference in specific gravity, and the processing liquid (7) is filled into the container (1) until it reaches the slit-shaped upper and lower openings (2) and (3). By doing so, the contact area with the upper submerged water (8) and the lower separated liquid (9) can be narrowed, and diffusion mixing at the interface between the processing liquid (7), submerged water (8), and separated liquid (9) can be reduced. can be suppressed.

Furthermore, the upper opening (2) of the container (1) was also flooded (8).
Since the lower end of the lower opening (3) is immersed in the separation liquid (9), the processing liquid (8) will not dry, solidify or crystallize around the ends of the upper and lower openings (2) and (3). It is completely preventable.

On the other hand, submerge an appropriate amount of water (8
) is injected into the water tray (5) and while it overflows, new processing liquid (
By supplying a small amount of 7), a part of the old processing liquid (8) existing in the upper part of the liquid supply pipe (4) is pushed out from the upper opening (2) to the water tray (5) side, and the existing old processing liquid It can be mixed with liquid (8) to restore some of its properties.

In addition, the processing liquid (8) pushed out to the water tray (5) side is
It can be mixed and diluted with the submerged water (8) in the water tray (5) and discharged together with the submerged water (8).

Then, one of the two containers (1) is filled with a developer and the other is filled with a fixer, and the film (9) is passed through them continuously as shown in FIG. Continuous processing of long films becomes possible.

In this example, a water tray (5) is arranged on each container (1), and submerged water (8) is poured into these to cover the top opening (2) with water. Instead, a water tank containing two containers (1) and a separated liquid tank (6), the upper end of which is higher than the upper end of the upper opening (2) of each container (1), is provided, and the water tank is submerged ( 8) may be injected.

1st Actual Difference ■ FIG. 2 is a front sectional view illustrating the concept of a developing tank according to an embodiment of the second invention.

In FIG. 2, GO is a container, and the container (11)
is provided with a liquid chamber that accommodates the processing liquid 07), and has a slit-shaped upper opening 0 through which the film 121 is inserted and removed.
2) is provided to protrude upward, a slit-shaped lower opening Q3) through which the film el passes is provided below, and the liquid chamber is a slit-shaped narrowed part through which the film QΦ can pass. It is divided into a plurality of chambers by 05), and a liquid supply pipe 04) is provided in the lowest chamber.

0ω is a water tank, and the water tank 0ω consists of two containers (11
) is placed inside and supported, and the upper end of the opening is higher than the upper end of the upper opening 02) of each container (II), and the water level of the submerged water 02) injected into the container is An overflow port Qυ is provided at a height that can be maintained higher than the upper end of the upper opening 02).

(22) is an electric heater, which is electrically connected to a power supply and control means (not shown) in the water tank a.
The temperature of the submerged water (Ill) injected into the inside of ω is raised in a controllable manner.

According to the developing tank having the above configuration, the water tank θω
A separation liquid 09) having a high specific gravity, such as fluorocarbon, is injected into the bottom of the tank to immerse each lower opening 03), and a water overflow port (submerged 08 until water overflows from 2'IJ) is placed in the upper part of the lower opening 03). In addition to obtaining the effect described in the first embodiment by injecting a water layer to cover each upper opening (18) with a water layer, when supplying a new processing liquid 07), this new processing liquid 07) is a slit-like constriction (existing processing liquid a'7 in the container (11) divided into multiple chambers by Iω)
In order to sequentially push the existing processing liquid 07) upward through multiple chambers that can quickly mix with the whole, as this new processing liquid 07) is supplied, the upper opening will be opened sequentially from the existing old processing liquid 0η. Discharge the processing liquid from part (2) into container (II).
It is also possible to obtain the effect of 7) which makes the characteristic recovery more reliable.

Then, one of the two containers (II) is filled with a developer and the other is filled with a fixer, and the film QO is passed through both containers (11) successively as shown in FIG. By doing so, it is possible to continuously develop long films, and the electric heater (c)
By raising the temperature in the container (11), the developer and fixer in each container (11) can be controlled to an appropriate temperature and the efficiency of the development process can be increased.

In addition, in this example, the narrowed part 05) of the container (11)
was formed by narrowing the wall of the container (11), but this could be done, for example, by arranging a pair of film feed rollers to form the narrowed part, or by forming a partition plate with slit-like holes. Other constriction methods may be applied, such as forming a constriction by arranging a constriction, or a means for stirring the processing solution may be provided in each chamber separated by each constriction to ensure the development process. This is a more preferable configuration.

[Effects of the Invention] As described above, the development tank according to the present invention can prevent oxidation of the developer used to continuously develop a long photosensitive film, thereby preventing its deterioration. It makes it possible to reduce the frequency of consumption and replacement of the developer, and also makes it possible to effectively replace parts of the developer at any time, making it easier to manage the characteristics of the developer used. This has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view illustrating the concept of a developing tank according to an embodiment of the first invention, and FIG. 2 is a front sectional view illustrating the concept of a developing tank according to an embodiment of the second invention. (1)-Container, (2)-Upper opening, (3)-Lower opening, (4)-Liquid supply pipe, (5)-Water tray, (6)-Separated liquid tank, (7)-Processing liquid, (8) - submergence, (9) - separation liquid, 00) - film. (II) - one container, θ2) - upper opening, 03) - upper opening, circle - liquid supply pipe, 051 - narrowed part, 0ω - water tank, Q
7)-1 treatment liquid, 08)-submergence, o9)-separation liquid,
el--film. Patent applicant Hanshin Institute of Technology Co., Ltd. Agent
Patent Attorney Akira Yoto

Claims (2)

[Claims] (1) A liquid chamber containing a developing solution is provided inside, and slit-shaped openings are provided at the upper and lower parts of the chamber through which photosensitive film can be inserted and removed. A developing processing tank characterized in that a lower end of the opening is immersed in a separated liquid having a higher specific gravity than the developing processing solution, and a developing processing solution supply port is provided between the upper and lower openings. (2) A liquid chamber containing a developing solution is provided inside, and slit-shaped openings are provided at the upper and lower parts of the chamber through which photosensitive film can be inserted and removed. A chamber in which the lower end of the opening is immersed in a separated liquid having a higher specific gravity than the developing treatment liquid, and the liquid chamber is divided into a plurality of chambers by a slit-like constriction through which a photosensitive film can pass, and the chamber is located at the lowest part. A developing processing tank characterized in that a developing solution supply port is provided in the developing tank.