JP2001305707A - Film developing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film developing device equipped with a liquid temperature regulating device which is simple in structure, is low in a cost, is easy in maintenance, is low in noise and is capable of regulating the liquid by cooling or heating the liquid in a liquid tank so as to attain the temperature within the prescribed range. SOLUTION: The liquid temperature regulating device consists of a liquid circulating pipeline 2 which communicates with the upper segments to the respective bottom segments of the developer liquid tank 21 and fixer tank 22 of a tank body 20, a liquid pump 3 for circulation which is interposed in mid-way of the liquid circulating pipeline 2, a heat exchange pipe 4b which is interposed into the downstream side of the liquid pump 3 for circulation of the liquid circulating pipeline 2 and is embedded into a heat transfer block 4a, a thermo- module 4c which consists of a Peltier element fastened to one flank of the heat transfer block 4a and a fan 4e which sends air to the heat radiation side of this thermo-module 4c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a film developing apparatus, and more particularly, it is possible to control the temperature of a liquid in a liquid tank by cooling or heating the liquid with low cost and low noise. It belongs to the technical field of a film developing apparatus adapted to be used.

[0002]

2. Description of the Related Art As is well known, in a film developing apparatus,
In summer, the rise in liquid temperature causes rapid deterioration of the developer and fixer, which not only reduces the film processing capacity but also deteriorates the sharpness of the image. There must be. Further, in winter, the processing capacity of the film is reduced due to a decrease in the temperature of the developing solution and the fixing solution. Therefore, in order to suppress the progress of the deterioration of the developer and the fixing solution and to exert a predetermined film processing ability, the temperature of the developing solution and the fixing solution is set to a predetermined temperature range, more specifically, 20 to 35. It is preferable to keep the temperature of the developing solution or the fixing solution so as to be in a temperature range of about ° C.

For this reason, the film developing apparatus includes a compressor, an evaporator, a cooler and the like, and is provided with a liquid cooling device used in summer and a liquid temperature adjusting device composed of an electric heater used in winter. Have been. Further, in both cases of cooling and heating, a stirrer is provided in the developing solution tank and the fixing solution tank in order to keep the entire liquid in each liquid tank at a uniform temperature. The liquid cooling device has the same configuration as, for example, a cooling device or the like, and is configured to cool a developing solution or a fixing solution by a refrigerant.

[0004]

According to the above-mentioned conventional film developing apparatus, the developing solution in the developing solution tank and the fixing solution in the fixing solution tank are reliably cooled by the liquid cooling device, and the electric heater is used for the cooling. By reliably heating, the temperature of the developing solution or the fixing solution can be maintained in a preferable predetermined temperature range. Therefore, according to the conventional film developing apparatus, the progress of deterioration of the developing solution and the fixing solution can be suppressed, and a predetermined film processing ability can be exerted. Because there is no
The film developing apparatus according to this conventional example is considered to be useful as such.

However, in the case of the film developing apparatus according to the conventional example, the structure of the liquid cooling device of the liquid temperature adjusting device is inevitably complicated and large. Must be refilled, and the compressor must be maintained on a regular basis. That is, the conventional film developing apparatus has a problem to be solved in that the initial cost and the running cost must be disadvantageous. Furthermore, when the film developing device is a large-sized device that develops, for example, an X-ray photograph of an affected part, and is installed in a hospital or the like,
There is a problem with the noise of the compressor that compresses the refrigerant, and it has been desired to realize a film developing device including a liquid cooling device with lower noise.

Accordingly, an object of the present invention is to provide a simple structure, low cost, easy maintenance, and to cool or heat the liquid in the liquid tank with low noise to bring the liquid temperature within a predetermined range. To provide a film developing device provided with a liquid temperature adjusting device that makes it possible to perform such adjustment.

[0007]

Means for Solving the Problems The inventors of the present invention have proposed a liquid temperature adjusting device for a film developing apparatus using a Peltier element which is easy to control temperature, is small, has no noise, has no moving parts and has high reliability. The present invention has been made in view that it is possible to easily solve the problem.

Therefore, in order to solve the above-mentioned problems, the means adopted by the film developing apparatus according to the first aspect of the present invention is to cool or heat the liquid in the liquid tank and adjust the liquid temperature to a predetermined temperature range. In a film developing apparatus provided with a liquid temperature adjusting device for adjusting the temperature, the liquid temperature adjusting device comprises a Peltier element for cooling or heating a liquid circulated from a bottom portion to an upper portion of the liquid tank by energization. It is characterized by comprising a module.

The means adopted by the film developing apparatus according to claim 2 of the present invention is to cool or heat the liquid in the liquid tank,
In a film developing apparatus including a liquid temperature adjusting device for adjusting a liquid temperature to a predetermined temperature range, a liquid temperature adjusting device for cooling or heating a liquid in a liquid tank to adjust the liquid temperature to a predetermined temperature range. In the film developing device, the liquid temperature adjusting device is provided with a liquid circulation pipe communicating from a bottom part to an upper part of the liquid tank, and a circulation liquid pump interposed in the middle of the liquid circulation pipe. A heat exchange pipe interposed on the discharge side of the circulating liquid pump of the liquid circulation pipe and embedded in a heat transfer block; And a thermo module comprising a Peltier element for cooling or heating the liquid flowing through the heat exchange tube via the heat transfer block, and a fan for sending air to the heat radiation surface side of the thermo module. .

According to a third aspect of the present invention, there is provided a film developing apparatus according to the second aspect, wherein a radiating fin is provided on a radiating surface of the thermo module. It is.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a film developing apparatus according to an embodiment of the present invention will be described with reference to FIG. 1 which is an overall perspective view of a film developing apparatus to which a liquid temperature adjusting device is attached, and FIG. FIG. 2 in a longitudinal sectional view cut and shown.
And FIG. 3 of a front view of a liquid temperature control device main body of the liquid temperature control device.
(A), FIG. 3 (b) as viewed in the direction indicated by the arrow A in FIG. 3 (a), and FIG. 4 as an explanatory view of the overall configuration of the liquid temperature control device in which the heat exchange tubes are displaced by 90 degrees. I will explain it.

First, referring to FIGS. 1 and 2, a schematic configuration of a film developing apparatus according to an embodiment of the present invention will be described.
1. A tank main body 2 having a fixing liquid tank 22 and a cleaning liquid tank 23
A block-shaped pump unit 30 detachably mounted on the tank main body 20 and integrally assembled with three pumps for developing solution, fixing solution, and cleaning solution; It is detachably mounted on the main body 20,
A developing roller group 50, a fixing liquid group 60, and a cleaning liquid group 70 which transport a film to be developed, which will be described later.
And roller support frame 40 supporting drying roller group 80
And

The developing solution in the developing solution tank 21 and the fixing solution tank 2
The fixing liquid in the cleaning liquid tank 2 and the cleaning liquid in the cleaning liquid tank 23 are driven by a round belt 31, and the developing roller group 50, the fixing liquid roller group 60, and the cleaning liquid are driven by respective pumps (not shown) constituting the pump unit 30. Roller group 7
The developing region 51, the fixing region 61, and the washing region 71, which are formed by the side plates 41, 41 of the roller support frame 40, are configured to be pumped.

The developing solution, the fixing solution and the cleaning solution pumped into the developing region 51, the fixing region 61 and the washing region 71 are:
The developing region 51 and the fixing region 61 leak from between the side surfaces of the side plate portions 41 and 41 and the end surfaces of the respective rollers, and return to the respective liquid tanks, and return to the respective liquid tanks from overflow ports (not shown). The liquid level of each liquid in the cleaning area 71 is kept constant.

Further, although not shown in the drawings, the developing roller between the adjacent rollers on the upper side of the developing roller group 50, the fixing liquid roller group 60 and the cleaning liquid roller group 70. On the liquid surface of the liquid or the fixing liquid, the width is slightly smaller than the distance between the adjacent rollers, and
A flat float slightly shorter than the interval 1 is floated. Floating the float on the liquid surface of the developer or the fixing solution in this way means that even if the temperature of the developer or the fixing solution is kept within an appropriate range, the developer or the fixing solution is brought into contact with the atmosphere. This is because the deterioration of the developing solution and the fixing solution is suppressed as much as possible by reducing the area that can be contacted with the atmosphere as much as possible, since the deterioration of the developing solution proceeds.

A small circular cross section is provided between adjacent rollers on the lower side of the developing solution roller group 50, the fixing solution roller group 60, and the cleaning solution roller group 70. In the developing device, the adjacent roller and the peripheral surface of the roller are freely rotated in contact with each other, thereby closing the gap between the adjacent roller and the developing area. Reference numeral 51 denotes a sealing roller for preventing leakage of each liquid in the fixing area 61 and the cleaning area 71 to form a liquid pool.

According to the film developing apparatus 10 having the above-described configuration, the photographed film is transferred to the developing roller group 5.
0, by the rotation of the fixing liquid roller group 60, the cleaning liquid roller group 70, and the drying roller group 80, the developing area 51, the fixing area 61, and the cleaning area 71 are transported in this order, and the drying area 81 is dried. Then, the development of the film is completed.
The developing solution and the fixing solution are circulated from the bottom portion to the upper portion of the developing solution tank 21 and the fixing solution tank 22, respectively, and cooled or heated so that the developing solution and the fixing solution are in a predetermined temperature range. Temperature adjusting device 1 having a configuration to be described later
Is installed.

FIG. 3 (a), FIG.
As shown in FIG. 4B and FIG. 4, a liquid circulation pipe 2 communicating from the bottom part to the upper part of the liquid tank of the tank body 20 and a circulation liquid pump interposed in the middle of the liquid circulation pipe 2 3 and a liquid temperature adjusting device main body 4 which is interposed on the discharge side of the circulating liquid pump 3 of the liquid circulating pipeline 2 and has a configuration to be described later.

The liquid temperature adjusting device main body 4 is shown in FIG.
As shown in (b), two heat exchange tubes formed by bending a stainless steel tube into a U-shape (one for a developer,
One is for the fixer. ) 4b is embedded and a heat transfer block 4a provided with a thermistor insertion hole Hs for inserting a thermistor. The heat transfer block 4a is made of copper and is manufactured by well-known cast-in casting. On one side surface of the heat transfer block 4a in which the heat exchange tube 4b is buried, a thermo module 4c having a well-known Peltier element, which absorbs heat and generates heat when energized, is closely attached.
Further, a heat dissipating fin 4d is provided on the heat dissipating surface side of the thermo module 4c opposite to the heat transfer block 4a, and a fan 4e for sending air to the heat dissipating fin 4d.
Are fixed to a bracket 4f attached to the thermo module 4c.

By the way, even if the heat radiating fin 4d is not provided on the heat radiating surface side of the thermo module 4c of the liquid temperature adjusting device main body 4, a reasonable air cooling effect or a warming effect can be expected. It is preferable that the outer surface of the liquid temperature control device main body 4 except for the fan 4e and the radiation fin 4d is covered with a heat insulating material such as urethane foam. This makes it possible to further improve the air cooling performance or the heating performance of the developing solution and the fixing solution.

The liquid temperature adjusting device 1 having the above configuration is configured to be controlled by operating a control box (not shown). More specifically, the amount of power supplied to the thermo module 4c is controlled so that the temperature of the heat transfer block 4a measured by a thermistor (not shown) inserted into the thermistor insertion hole Hs falls within a predetermined range. Things.

In the case of such control, the relationship between the temperature of the heat transfer block 4a measured by the thermistor and the temperature of each liquid in the liquid tank of the tank body 20 is used. is there. A well-known thermostat is provided in the liquid tank of the tank body 20, and the power supplied to the thermo module 4c is turned on by the thermostat.
OFF control may be performed.

The mode of operation of the liquid temperature adjusting device 1 of the film developing device 10 having the above-described configuration will be described below by taking the case of cooling the liquid as an example. The liquid and the fixing liquid in the fixing liquid tank 21 are circulated from the bottom part to the upper part of each liquid tank through the liquid circulation line 2. The temperature of the developing solution and the fixing solution flowing through the heat exchange tube 4b is reduced by the heat absorption of the thermo module 4c due to the energization, and the temperature of the developing solution and the fixing solution flowing in the heat exchange tube 4b is reduced because the thermo module 4c fixing portion of the heat transfer block 4a is cooled. The developer and the fixer are transmitted to the low temperature part 4a, and are effectively cooled. In order to raise the temperature of the developing solution and the fixing solution by heating the developing solution and the fixing solution, it is only necessary to reverse the polarity of the supplied electric power.

As described above, in the case of the liquid temperature adjusting device 1 of the film developing device 10 according to the embodiment of the present invention, the liquid circulating pipe 2, the circulating liquid pump 3, and the heat exchange pipe 4b are embedded. Heat transfer block 4a, thermo module 4c,
It is composed of a radiation fin 4d and a liquid temperature adjusting device main body 4 composed of a fan 4e.

Therefore, according to the liquid temperature adjusting device 1 of the film developing device 10 according to the embodiment of the present invention, the configuration is complicated like the liquid cooling device of the liquid temperature adjusting device of the conventional film developing device. Not only is it compact and does not require regular maintenance work, but also consumes very little power, so it is much more advantageous in terms of initial cost and running cost than the conventional liquid temperature control device. The excellent economic effect that it becomes. Since the developing solution and the fixing solution do not come into direct contact with the atmosphere during the cooling, the deterioration of the developing solution and the fixing solution due to the contact with the atmosphere does not progress.

As described above, in the case of the film developing apparatus 10 according to the embodiment of the present invention, the developing solution and the fixing solution are circulated through cooling or heating, and the liquid in each solution tank is circulated. Each is naturally stirred by the liquid flow flowing out of the liquid outlet of the liquid circulation pipeline. Therefore, unlike the film developing device according to the conventional example, there is also an effect that the entire liquid in each liquid tank can be uniformly heated without having to provide a stirring device in each liquid tank.

Further, according to the liquid temperature adjusting device 1 of the film developing device 10 according to the embodiment of the present invention, as described above, the noise source is only the small fan 4e. Therefore, the noise is much lower than the noise of the compressor of the liquid temperature control device of the conventional film developing device, and even if it is installed in a hospital, there is no complaint about noise. is assumed. Incidentally, in the room, there may be some inevitable indoor environmental noise. However, at a position about 1 m away, the wind noise of the fan 4e and the drive sound of the drive motor of the fan 4e cannot be heard at all. Finally, it was just enough to hear.

By the way, in the case of the liquid temperature adjusting device 1 of the film developing device 10 according to the embodiment of the present invention, the liquid circulating pipe 2, the circulating liquid pump 3, and the heat exchange pipe 4b are embedded. The transmission block 4a, the thermo module 4c, the radiating fins 4d, and the liquid temperature adjusting device main body 4 including the fan 4e can be integrated into a cooling / heating unit. By using the cooling / heating unit as described above, there is an effect that the cooling / heating unit can be easily applied to an existing film developing apparatus.

Electromagnetic switching is performed to the discharge side of the circulating liquid pump in each of a liquid circulation line communicating from the bottom portion to the upper portion of the developing solution tank and a liquid circulation line communicating from the bottom portion to the upper portion of the fixing solution tank. Valves are interposed, and a branch conduit communicating from each electromagnetic switching valve to the developing area and the fixing area is provided. When the film is not being developed, the respective liquids are circulated from the bottom part to the upper part of each liquid tank to cool or heat, and when the film is developed, the electromagnetic switching valve is switched to switch the bottom part of each liquid tank. Therefore, it is also possible to adopt a configuration in which each liquid is circulated while cooling in the developing area and the fixing area on the upper side of the tank body.

With the above configuration, there is an increase in cost due to the use of the electromagnetic switching valve. However, in addition to eliminating the need for the pump unit 30 (however, a cleaning liquid pump is required), the configuration of the tank body is simplified (in the case of resin, the manufacturing cost of the mold for forming the tank body is reduced). Is possible.) That is, since the manufacturing cost of the tank body 20 is reduced, the overall manufacturing cost of the film developing device may be so economically disadvantageous as compared with the film developing device 10 according to the above embodiment. Absent. A well-known cock may be interposed in each of the liquid circulation pipeline and the branch pipeline, and the flow paths of the developing solution and the fixing solution may be changed by manual switching operation of each cock.

In the above embodiment, the case where the heat transfer block 4a is made of copper has been described as an example. However, although the cooling and heating efficiency of the liquid is slightly reduced, the heat transfer block 4a is made of aluminum. Can be replaced by Further, the heat exchange tube 4b formed in a U-shape is formed.
However, the configuration is not limited to a U-shape, and may be, for example, a wavy shape, as long as the configuration can secure a wide heat transfer area.

Further, the example in which one thermo module 4c is fixed to the heat transfer block 4a has been described, but two or more thermo modules 4c can be fixed if necessary. Further, the example in which the liquid temperature control device 1 is separated from the film developing device 10 has been described. However, a space is formed in the tank main body 20, and the liquid temperature control device main body 4 of the liquid temperature control device 1 is incorporated in this space. Thus, the film developing device 10 and the liquid temperature adjusting device 1 can be integrated.

Further, the technical idea of the present invention is applied to a film developing apparatus 10 having a tank main body 20 in which a developing solution tank 21, a fixing solution tank 22, and a cleaning solution tank 23 are integrally formed. Although the case has been described as an example, the technical idea of the present invention can be applied to a film developing device having a separate configuration of a developer tank, a fixer tank, and a washing tank.

Therefore, the scope of application of the technical idea of the present invention is not limited by the above embodiment, and design changes and the like can be freely made without departing from the technical idea of the present invention.

[0035]

As described above in detail, according to the film developing device of the present invention, the liquid temperature adjusting device is configured to include the thermo module including the Peltier device. Therefore, it is not as complicated as the liquid cooling device of the liquid temperature adjusting device of the conventional film developing device,
Not only is it small and does not require regular maintenance work, it consumes very little power.
An excellent economic effect that the initial cost and the running cost are much more advantageous than the conventional example can be exhibited. Furthermore, since the compressor is not provided as in the conventional film developing apparatus, the noise is low,
Even if installed in a hospital, there will be no complaints about noise.

Further, according to the film developing device of the third aspect of the present invention, since the heat radiating fins are provided on the heat radiating surface side of the thermo module, the cooling efficiency of the liquid is improved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a film developing device to which a liquid temperature adjusting device is attached according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing an upper portion of the film developing device cut in a film transport direction according to the embodiment of the present invention.

3 (a) is a front view of a liquid temperature control device main body of the liquid temperature control device, and FIG. 3 (b) is a view taken in the direction of arrow A in FIG. 3 (a) according to the embodiment of the present invention. is there.

FIG. 4 is an explanatory diagram of the overall configuration of a liquid temperature adjusting device according to an embodiment of the present invention, in which a heat exchange tube is displaced by 90 degrees.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Liquid temperature adjusting device, 2 ... Liquid circulation line, 3 ... Circulating liquid pump, 4 ... Liquid temperature adjusting device main body, 4a ... Heat transfer block, 4
b: heat exchange tube, 4c: thermo module, 4d: radiating fin, 4e: fan, 4f: bracket 10: film developing device 20: tank body, 21: developing solution tank, 22: fixing solution tank, 23
... Cleaning liquid tank 30 ... Pump unit, 31 ... Round belt 40 ... Roller support frame, 41 ... Side plate 50 ... Developer roller group, 51 ... Development area 60 ... Fixer roller group, 61 ... Fixing area 70 ... Cleaning liquid Roller group, 71: Cleaning area 80: Drying roller group, 81: Dry area Hs: Thermistor insertion hole

Claims (3)

[Claims] 1. A film developing apparatus comprising a liquid temperature adjusting device for cooling or heating a liquid in a liquid tank to adjust the liquid temperature within a predetermined temperature range, wherein the liquid temperature adjusting device is operated A film developing device comprising a thermo module comprising a Peltier element for cooling or heating a liquid circulated from a bottom portion to an upper portion of the liquid tank. 2. A film developing apparatus comprising a liquid temperature adjusting device for cooling or heating a liquid in a liquid tank to adjust the liquid temperature within a predetermined temperature range, wherein the liquid temperature adjusting device comprises: A liquid circulation line communicating from the bottom part of the tank to the upper part,
A circulation liquid pump interposed in the middle of the liquid circulation pipe;
A heat exchange pipe interposed on the discharge side of the circulation liquid pump of the liquid circulation pipe and embedded in a heat transfer block, and is fixed to at least one side surface of the heat transfer block in a tightly-closed state. A film developing device comprising: a thermo module comprising a Peltier element for cooling or heating a liquid flowing in a heat exchange tube via a transmission block; and a fan for sending air to a heat radiation surface of the thermo module. 3. The film developing device according to claim 2, wherein heat radiating fins are provided on a heat radiating surface of the thermo module.