JPS60194455A - Aeration device for developing device - Google Patents

Abstract

PURPOSE:To supply sufficient air by forming an air feeding means for sending air to a circulation pump for a bleaching solution and into the bleaching solution itself in a connection passage between a bleaching solution tank and a temperature adjusting tank. CONSTITUTION:When a liquid surface level difference H is generated, the bleaching solution 78 in a treating tank 22 is made to flow into the temperature adjusting tank 74 through a pipe 76, heated up to a proper temperature by a heater (not shown), made to flow elastically into a pipe 82 by a pump 84, and then cleaned up by a filter 86. The bleaching solution 78 in the pipe 82 is sent to the processing tank 22 by the pump 84 along the arrow direction. Therefore, the bleaching solution 78 is circulated in a clockwise direction and the partial fatigue of the solution is prevented by a mixing effect. Air bubbles 92 from a blowing port 90A of an air pump 90 are moved upwards together with the bleaching solution 78 and the contact length between the bleaching solution and air is increased from l to L, so that the aeration effect is also increased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an aeration device for a developing device that is connected to a bleaching solution tank of the developing device and supplies a required amount of air to the bleaching solution.

[Background Art] Film development, particularly color film development, generally consists of development, bleaching (re-halogenation treatment), fixing, water washing, stabilization, and drying, and usually involves more development steps than black and white film. It is.

For this reason, in recent years, the entire process of film development has been automated using a conveyor system. In this developing device, the film is pulled out from the cartridge by the supply mechanism, passes through processing tanks for developer, bleach, fixer, washing water, and stabilizer by a conveyor, and then passes through a dryer to a predetermined pox. It is designed to be accumulated.

Further, a liquid temperature regulating tank (hereinafter referred to as a temperature regulating tank) is connected to the bleaching solution tank to maintain the bleaching solution at an appropriate temperature at all times, and a pump circulates the bleaching solution between the two tanks. In order to further improve the bleaching performance of the bleaching solution, the outlet end of an air supply device is disposed in the bleaching solution tank to supply air to the bleaching solution.

This is called aeration, and it takes advantage of the fact that oxygen in the air chemically accelerates the bleaching action.

However, in this type of aeration device, a large number of air bubbles accumulate on the surface of the bleach tank, and the overflowing air bubbles may scatter into the developer tank, adversely affecting film development. For this reason, in the past, the partition wall between the bleach solution tank and the developer tank was raised to prevent air bubbles on the liquid surface from scattering or flowing into the developer tank, and this hindered the miniaturization of the developer device. ing.

[Object of the Invention] The present invention has been made in view of the above circumstances, and its purpose is to provide an aeration device for a developing device that can prevent bubbles from overflowing even when the developing device is downsized and can supply sufficient air. There is a particular thing.

[Structure of the Invention] In order to achieve the above object, in the first invention, air from the air supply means is sent into the bleaching solution of the temperature control tank instead of the bleaching solution tank, so that bubbles are generated in the bleaching solution tank. It is configured so that there is no such thing. Since a considerable amount of space is formed in the temperature control tank, bubbles can be accommodated sufficiently.

Further, in the second invention, the lower part of the bleaching liquid tank and the temperature control tank are connected by an auxiliary pipe, the bleaching liquid in the auxiliary pipe is moved to the temperature control tank by the pushing means, and the air supply means is connected to the auxiliary pipe. The contact area between the air and the bleaching solution is increased by supplying the bleaching solution to the temperature control tank through this auxiliary pipe.

[Embodiments of the Invention] FIG. 1 shows a developing device 12 incorporating an aeration device of the present invention. The outside of the developing device 12 is covered with a frame 14 to block all external light. Further, the lower part of the frame 14 is supported on a floor 18 by a plurality of support legs 16.

The frame 14 includes a plurality of processing tanks 20, 22, 24, 26, 2B, 30.
32 are formed in an aligned state. The processing tank 20 is filled with a developing solution, the processing tank 22 is filled with a bleaching solution, the processing tank 24 is filled with a fixing solution, the processing tanks 26 and 28 are filled with washing water, and the processing tank 30 is filled with a stabilizing solution. A heater 34 and a fan 35 are arranged below to blow hot air upward.

In addition, the lower part of each treatment tank 20 to 32 and each partition wall 33'
A guide roller 36 is provided above, and the guide roller 36
A guide 37 corresponds to each other with a predetermined gap therebetween. Further, sprockets 38 are installed above and below each of the processing tanks 20 to 32, and a bell 40 for transporting the film is suspended.

The belt 40 has an endless shape and has many protrusions (
When a motor (not shown) rotates the sprocket 38, the sprocket 38 rotates counterclockwise. For this reason, the upper sprockets 38 are connected by one endless chain (not shown) so that the power of the motor is simultaneously transmitted to each sprocket 38. Furthermore, a plurality of protrusions 5 are provided at predetermined intervals on the outer surface of the bell) 40.
2 is formed.

On the other hand, the film 42 is attached to the spool 4 as shown in FIG.
4 and is housed in a cartridge 46. In this embodiment, the tips of the two films 42 pulled out from the spool 44 are fixed to one leader 48, so that the two films 42 can be conveyed simultaneously.

The leader 48 is a flexible synthetic resin sheet that is slightly more rigid than the film 42, and has a plurality of square holes 50 along the longitudinal direction of the center, and these square holes 50 are connected to the projections 52 of the bell 40. By being held together, the film 42 is conveyed.

A film supply device 54 is installed on the upper entrance side of the developing device 12 (on the left side in FIG. 1), and its upper part is covered by a cover 56 that can be opened and closed. This film supply device 54 is provided with a pedestal 58 on which each cartridge 46 of the film 42 connected to the leader 48 can be placed.

A pair of conveyance rollers 6 are provided between the pedestal 58 and the guide roller 36.
0 is provided, and this conveyance roller 60 performs the function of conveying the leader 48 and film 42 to the conveyor line.

A cutter 62 is disposed between the pedestal 58 and the conveying roller 60, and cuts the end of the film 42 when the entire amount of the film 42 is pulled out from the cartridge 46 by a control means (not shown).

A film stacking device 64 is installed on the upper exit side of the developing device 12 (on the right side in FIG. 1). In this film stacking device 64, a guide 66 is connected to the end of the frame 14, and a conveying roller 68 is provided on the lower surface of the guide 66. A collection plate 70 is arranged at the tip of the guide 66 with a predetermined gap therebetween, and a hook 72 projects from the upper inner surface of the collection plate 70.

For this reason, the film 42 and leader 48 that have undergone each development process are
After being pulled out by the conveying roller 68, it moves upward along the lower surface of the guide 66 and the inner surface of the collecting plate 70, and the protrusion 52 (see FIG. 2) of the leader 48 engages with the hook 72.

Therefore, the film 42 and the leader 48 are transported as follows.

First, the leading ends of the two pieces of film 42 are pulled out from the cartridge 46 and fixed to the rear end of the leader 48 as shown in FIG. Next, the cover 56 of the film supply device 54 (FIG. 1) is opened, each cartridge 46 is set on the pedestal 58, and the leader 48 is placed on the conveying roller 60 below. When the cover 56 is closed in this state, the leader 48 is sandwiched between the re-conveying rollers 60, and when a predetermined switch is turned on, the leader 48 and the film 42 are moved between the guide rollers 36 and the guide 3.
Sent out for 7 days.

The leader 48 and the film 42 are turned downward by the upper guide 37, and the square hole 50 of the leader 48 is aligned with the belt 40.
It fits into the protrusion 52 of. Therefore, even if the end of the film 42 comes off the transport roller 60, the leader 48 and the film 42 are immersed in the developer in the processing tank 20 by the belt 40.

On the other hand, when the entire amount of the film 42 is pulled out from the cartridge 46, the cutter 62 is activated and the end of the film 42 is cut off from the cartridge 46.

The leader 48 and the film 42 once descend within the processing tank 20, pass between the lower guide roller 36 and the guide 37, and then are reversed and conveyed upward. Since a guide roller 36 and a guide 37 are provided above the partition wall 33, the leader 48 and film 42 are again turned downward and sent to the next processing tank 22.

In this way, the leader 48 and the film 42 pass through each of the processing tanks 20 to 32, and the film 42 is subjected to color development, bleaching, fixing, washing, stabilization, and drying processing. The leader 48 and film 42 that have completed each step pass between the transport rollers 68 of the film stacking device 64, the lower surface of the guide 66, and the inner surface of the stacking plate 70, and are suspended from the hook 72.

FIG. 3 shows an aeration device 10 of this embodiment, and in this aeration device 10, a temperature control tank 74 is installed on the back side of the processing tank 22. The temperature control tank 74 is connected to the upper side of the processing tank 22 via a pipe 76, and the bleaching solution 78 is transferred from the processing tank 22 to the temperature control tank 7 due to the liquid level difference H.
It flows to 4.

Although not shown, the temperature control tank 74 is provided with a temperature controller,
The bleaching solution 78 is always maintained at an appropriate temperature. Temperature control tank 74
is formed of a light-shielding material, and its upper surface is covered with a cover 80.
The bleaching solution 78 inside is closed to prevent light from hitting the bleaching solution 78 inside.

The lower part of the processing tank 22 and the temperature control tank 74 are connected by a pipe 82, and a pump 84 is interposed in the middle of the pipe 82 to forcibly circulate the bleaching solution 78 in the direction of the arrow. Therefore, the bleaching solution 78 is always maintained at an appropriate temperature of 0, and fatigue of the bleaching solution 78 is prevented by the stirring effect.

One end of the pipe 82 penetrates the bottom of the temperature control tank 74 and enters the bleaching solution 78, and a filter 86 is attached to its tip. This filter 86 serves to remove impurities and precipitates from the circulating bleaching solution 78.

An auxiliary pipe 88 is further connected to the bottom of the temperature control tank 74.
The auxiliary pipe 88 extends downward, is bent, and is connected to the lower side surface of the processing tank 22 . Further, an air pump 90 is connected to the bent portion of the auxiliary pipe 88, and its outlet 9
0A enters the auxiliary pipe 88 upwards. Air pump 90 improves bleaching performance by supplying air in the form of bubbles 92 to bleach solution 78 .

The aeration device IO of this embodiment configured as described above operates as follows.

The bleaching liquid 78 in the processing tank 22 flows into the temperature control tank 74 through the pipe 76 due to the difference in liquid level H, and when the temperature is lower than the optimum temperature, it is heated by the heater 1 (not shown), and when the temperature is higher than the optimum temperature, the bleaching liquid 78 is heated by the heater 1 (not shown). Then, the heater is turned off or cooled by a cooler (not shown).

The bleaching solution 78 at an appropriate temperature is forced to flow into the pipe 82 by the action of the pump 84, and at this time the bleaching solution 78 is forced to flow into the pipe 82 through the filter 8.
Cleaned by 6. The bleaching solution 78 in the pipe 82 is pumped into the processing tank 22 along the direction of the arrow by the action of the pump 84.
sent to.

For this reason, the bleaching solution 78 is circulated clockwise in FIG. 3, so that it is always maintained at an appropriate temperature and the stirring effect prevents partial fatigue of the solution.

On the other hand, the bleaching liquid 78 in the auxiliary pipe 88 moves from the processing tank 22 to the temperature regulating tank 74 due to the liquid level difference H between the processing tank 22 and the temperature regulating tank 74 . Therefore, the air bubbles 92 supplied from the air outlet 90A of the air pump 90 move upward together with the bleaching liquid 78. Therefore, compared to the case where the outlet 90A is placed directly in the temperature control tank 74, the length of contact between the bleaching solution 78 and the air increases from L to L, and the aeration effect becomes more than three times as large.

That is, since the air contact area of the bleaching liquid 78 increases by the vertical dimension of the auxiliary pipe 88, the capacity of the air pump 90 is reduced by 1.
/3. If the amount of air supplied is reduced, the amount of bubbles accumulated in the temperature control tank 74 will also be reduced and will not overflow to the outside.

Furthermore, when a portion of the air bubbles 92 exits from the narrow auxiliary pipe 88 to the wide temperature control tank 74, they disappear quickly even if there is a large amount of air due to the pressure difference. Furthermore, since the bleaching liquid 78 flows into the temperature regulating tank 74 through the pipe 76, the bubbles accumulated on the liquid surface of the temperature regulating tank 74 will not flow back into the processing tank 22.

As a result, even if the temperature control tank 74 and the air pump 90 are downsized, a sufficient aeration effect can be obtained.

In the above embodiment, the bleaching liquid 78 and bubbles 92 in the auxiliary pipe 88 are sent to the temperature control tank 74 using the liquid level difference H between the processing tank 22 and the temperature control tank 74. It may also be forcibly supplied by using Further, this aeration device 10 can be easily incorporated into a conventional developing device.

[Effect of the invention] As described above, in the first invention of the present application, since the air from the air supply means is sent to the temperature control tank instead of the bleaching liquid tank, the bubbles overflowing above the bleaching liquid tank are can be prevented from scattering or flowing into the developing tank. Also, the second part of the present application
In the invention, the lower part of the bleaching liquid tank and the temperature control tank are connected by an auxiliary pipe, the bleaching liquid in the auxiliary pipe is moved to the temperature control tank by a pushing means, and the air supply means is moved below the auxiliary pipe. By supplying air to the temperature control tank through this auxiliary pipe, the contact area between the bleaching solution and the air is increased, so a sufficient aeration effect can be obtained with a small-capacity pump.

[Brief explanation of drawings]

FIG. 1 is a side view of the developing device, FIG. 2 is a plan view showing a state in which the film is attached to the league, and FIG. 3 is a simplified sectional view taken along line 1--2 in FIG. 4 10φ・e aeration device, 12...Developing device, 22...Red processing tank, 74...Temperature control tank, 76...Pipe, 78 Fist...Bleach solution, 82-...Pipe, 84- ...pump, 86...filter, 88...auxiliary pipe, 90...air pump, 90A...outlet, 92...air bubbles. Agent Patent Attorney Jun Nakajima 5

Claims (2)

[Claims] (1) A temperature control tank that is connected to a part of the bleach tank and adjusts the temperature of the bleach solution, and a temperature control tank that is installed in the connecting passage between the bleach tank and the temperature control tank to forcibly circulate the bleach solution between the two tanks. circulation pump,
An aeration device for a developing device, comprising: air supply means for feeding air into the bleaching solution in the temperature control tank in order to promote the bleaching effect. (2) A temperature control tank that is connected to a part of the bleach tank and adjusts the temperature of the bleach solution, and a temperature control tank that is installed in the connecting passage between the bleach tank and the temperature control tank to forcibly circulate the bleach solution between the two tanks. circulation pump,
In an aeration device for a developing device, the aeration device includes an air supply means for sending air into the bleaching solution in the temperature regulating tank in order to promote the bleaching effect, and the lower part of the bleaching solution tank and the temperature regulating tank are connected by an auxiliary pipe. At the same time, the bleaching solution in the auxiliary pipe is moved to the temperature regulating tank by a pushing up means, the air supply means is installed below the auxiliary pipe, and air is supplied to the temperature regulating tank through the auxiliary pipe. Aeration device for developing device.