JPH11109586A - Automatic developing machine for photosensitive material and heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize the heat energy of waste processing solution and to make reducible the consumption of electric energy, by exchanging heat between an overflow discharged from a processing solution tank and supplied auxiliary processing solution and/or processing agent dissolving water. SOLUTION: Overflow discharge ports 40 and 60 are respectively installed on a developer tank 4 and a fixing solution tank 6. When the tanks 4 and 6 are replenished with a replenisher from replenishment processing solution tanks 110 and 120 through ducts 118 and 128, the developer and the fixing solution fatigued and deteriorated, whose quantity is nearly the same as replenisher quantity, enter heat exchangers 100A and 100B from entrances 42 and 62 through ducts 41 and 61 from the ports 40 and 60, and pass through ducts 45 and 65 from exits 44 and 64 while radiating the heat to the replenishment processing solution in the midst of passing through the heat exchangers through partitions 101A and 101B, then they are discharged to waste solution tanks 47 and 67. A distance between the partition 101A and an outer plate is set to 1 to 10 mm so as to form flat container parts 43 and 116.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic developing machine for a photosensitive material and a heat exchanger having means for reducing the electric power used by an electric heater for adjusting the temperature of a processing solution to an appropriate temperature or increasing the temperature of dry air.

[0002]

2. Description of the Related Art The processing temperature of a processing solution of an automatic developing machine for photosensitive materials is set at a considerably high temperature of 30 to 40 ° C., and a high temperature is required for drying a photosensitive material which has been developed, fixed and washed. Drying air is required, and these are heated by an electric heater, and the temperature is adjusted by detecting the temperature with a thermometer and turning on / off the electric heater.

[0003] The set temperature of such a processing solution is increasing more and more for rapid processing. Further, since such a processing solution deteriorates as the processing of the photosensitive material progresses, it is gradually discarded, and a new replenisher of the processing solution corresponding to this is supplied. Further, since the high-temperature dry air also contains moisture and becomes moist, it is gradually discarded and replaced with new high-temperature air.

[0004]

Regardless of the treatment liquid or the drying air, the required heat energy is so large that simply discarding it is not preferable in terms of saving heat energy.
Also, if the power capacity of the automatic developing machine for photosensitive materials installed in mini-labs in various places increases, it is not preferable because not only does the power cost increase but also the amount of power distribution equipment in the store increases.
SUMMARY OF THE INVENTION It is an object of the present invention to solve such problems and to provide a heat exchanger for utilizing the heat energy of a processing liquid to be discarded or a drying wind, and an automatic developing machine for a photosensitive material equipped with the heat exchanger.

[0005]

This object is achieved by any one of the following technical means (1) to (15).

(1) A processing solution for processing a photosensitive material is stored in a processing solution tank, and a means is provided for adjusting the temperature of the processing solution to a constant temperature of 30 ° C. or more. In an automatic developing machine for a photosensitive material having a means for supplying a replenishing processing solution and / or a processing agent dissolved water to a liquid tank, the maximum supply amount that the replenishing processing solution and / or the processing agent dissolved water supplying means can supply in one hour The storage capacity of the processing liquid tank is set to 5 times or less, and a heat exchanger for exchanging heat between the overflow discharged from the processing liquid tank and the supplied replenishment processing liquid and / or processing agent dissolved water is provided. Automatic developing machine for photosensitive materials.

(2) A processing solution for processing the photosensitive material is stored in a processing solution tank, and a means is provided for adjusting the temperature of the processing solution to a constant temperature of 30 ° C. or more. In an automatic developing machine for a photosensitive material having a means for supplying a replenishing processing solution and / or a processing agent dissolving water to a liquid tank, a temperature adjusting means for the processing liquid in the processing liquid tank controls an output of an electric heater by a temperature detecting means. Means, a means for circulating the processing liquid in the processing liquid tank and a filter for removing solids in the processing liquid are provided, and further, the overflow discharged from the processing liquid tank and the processing liquid tank A heat exchanger is provided, in which the supplied replenishment treatment liquid and / or treatment agent dissolving water flow through the respective liquids in the countercurrent direction through a thin metal plate partition wall to transfer heat. Automatic developing machine for photosensitive materials.

(3) Means for storing a processing solution for processing the photosensitive material in a processing solution tank and adjusting the temperature of the processing solution to a constant temperature of 30 ° C. or more, according to the processing amount of the photosensitive material. In an automatic developing machine for a photosensitive material having a means for supplying a replenishing processing solution and / or a processing agent dissolving water to a liquid tank, an overflow discharged from the processing liquid tank and a supply to the processing liquid tank in a plurality of processing steps. A heat exchanger for exchanging heat with the replenishment treatment liquid and / or treatment agent-dissolved water, and a heat exchanger for exchanging exhaust gas and air supply from the drying step with heat in the drying step after the treatment. An automatic heater for the photosensitive material, wherein the heating means in the drying step is an electric heater.

(4) A processing solution for processing the photosensitive material is stored in a processing solution tank, and means is provided for adjusting the temperature of the processing solution to a constant temperature of 30 ° C. or more. In an automatic developing machine for a photosensitive material having means for supplying a replenishing processing solution and / or a processing agent dissolving water to a liquid tank, an overflow discharged from the processing liquid tank and the replenishment processing liquid supplied to the processing liquid tank And / or a heat exchanger for exchanging heat with the dissolving water of the treatment agent is provided, and the heat exchanger is brought into contact with the treatment liquid tank and accumulated in the heat exchanger by adjusting the temperature of the treatment liquid tank when untreated. An automatic developing machine for a photosensitive material, comprising a heat exchanger configured to heat the liquid to be heated.

(5) The side or lower surface of the processing liquid tank is
(4) The automatic developing machine for photosensitive materials according to the above (4), wherein the automatic developing machine has a structure in which heat is transferred by also using the outer plate of the heat exchanger.

(6) The storage capacity of the processing liquid tank is set to 5 times or less of the maximum supply amount that can be supplied in one hour by the supply means of the replenishment processing liquid and / or the processing agent dissolved water. The automatic developing machine for photosensitive materials according to (4) or (5).

(7) The temperature control means for the processing liquid in the processing liquid tank is of a type in which the output of the electric heater is controlled by a temperature detecting means, and means for circulating the processing liquid in the processing liquid tank and the processing liquid And a filter for removing solid matter, and furthermore, an overflow discharged from the processing liquid tank and the replenishment processing liquid and / or processing agent dissolving water supplied to the processing liquid tank are separated from a partition wall of a metal thin plate. (4) The automatic development for photosensitive material according to any one of (4) to (6), further comprising a heat exchanger for flowing each liquid in a countercurrent direction to move heat. Machine.

(8) In a drying step after the treatment liquid tank, a heat exchanger for exchanging heat between exhaust gas and air supply from the drying step is provided, and a heating means in the treatment liquid tank step and the drying step is electrically heated. The automatic developing machine for photosensitive materials according to any one of (4) to (7), which is a heater.

(9) A flat container portion is formed by three plates, an outer plate, a partition made of a metal thin plate, and an outer plate. The thickness of the partition made of the metal thin plate is 0.01 mm to 0.5 mm. At least one of the partition walls of the thin metal plate has continuous or discontinuous irregularities. The flat container portion has two chambers through the partition wall of the thin metal plate. A heat exchanger characterized by being replaced.

(10) The distance between the outer plate and the partition wall of the thin metal plate is in a range of 1 mm to 10 mm, and the material of the thin metal plate is stainless steel or titanium material. Heat exchanger.

(11) The outer plate is made of a resin such as PE, PP, PVC, PVPC or the like having an irregular shape on the partition side of the metal thin plate, has liquid inlets and outlets at both ends, and is provided with two partitions. Sandwiched between the outer plates, the outer peripheral portion of the outer plate is larger than the outer peripheral portion of the partition wall of the thin metal plate, and the partition wall of the thin metal plate and the entire periphery of the end portion of the outer plate are sealed and fixed with an adhesive. The heat exchanger according to the above mode (9) or (10).

(12) A portion of the thin metal plate other than the outer peripheral portion of the partition wall is formed in an uneven shape, the outer plate is made of resin and provided with a liquid inlet / outlet, and the outer peripheral portion of the outer thin plate is provided with a liquid inlet / outlet. The rubber packing is fixed by providing a groove for fixing the rubber packing at a contact portion of the outer plate, and the outer peripheral portion of the outer plate is larger than the outer peripheral portion of the partition wall of the thin metal plate, and the two outer plates are fitted at the outer peripheral portion. The heat exchanger according to any one of (9) to (11), which is fixed by a structure.

(13) The method according to any one of (9) to (12), wherein the uneven shape is a continuous wavy shape, and the wavy shape is a structure that regulates a liquid flow. The heat exchanger as described.

(14) The heat exchanger according to any one of (9) to (13) is removed from the processing solution tank of the automatic developing machine for photosensitive material according to any one of (1) to (8). The photosensitive material according to any one of (1) to (8), which is used as a heat exchanger for exchanging heat between the discharged overflow and the supplied replenishment processing solution and / or processing agent dissolving water. Automatic developing machine for materials.

(15) The photosensitive material as described in (14), which has a timer operation function such that a warm-up operation for raising the temperature of the processing solution in each processing solution tank to a designated temperature can be performed in an unattended state. Automatic developing machine.

The operation of the present invention according to the technical means having the above-described configurations will be described below for each request.

According to the first aspect of the present invention, it is possible to use a heater having a small heat generating capacity as the temperature control means used for the processing liquid.

If the capacity of the processing tank is large relative to the maximum supply amount per hour of the automatic developing machine for photosensitive materials, a large-capacity heat source is required to raise the temperature to a certain temperature during warm-up. The effect cannot be obtained because the effect is absorbed by voltage fluctuation, heater variation, and the like. That is,
By reducing the capacity of the processing tank as much as possible, and setting the heat source required for warming up to a small capacity (5 times or less) and heating the liquid to be supplied at the time of processing with a heat exchanger, it becomes clear that the capacity of the heater is reduced. For this reason, the capacity of the processing tank is preferably reduced to three times or less, more preferably equal to or less than the maximum supply amount.

As a method for reducing the capacity, it is preferable to adopt a structure in which many parts other than the photosensitive material passage are closed with a filler or the like.

If the capacity reduction is less than 0.01 times, it becomes difficult to maintain the temperature, so it is preferable that the capacity be 0.01 times or more.

According to the second aspect of the present invention, an electric heater having a small heat generation capacity can be used stably over a long period of time. That is, if there is no filter, the heat exchange metal sheet is soiled and the heat transfer is reduced. By preventing this, an effect is produced that does not cause poor temperature control or the like for a long time.

According to the third aspect of the present invention, the power consumption and the rated power of the automatic developing machine for photosensitive materials can be reduced. That is, as a power consumption source in the automatic developing machine for a photosensitive material, a processing liquid heating heater and a drying heater are main parts. Power can be greatly reduced.

According to the fourth aspect of the present invention, the heat exchanger is heated at the time of warming-up, and a heated replenisher can be supplied immediately after the start of processing, and a heater having a smaller heating capacity can be used.

According to the fifth aspect of the present invention, the heat exchanger of the automatic developing machine for photosensitive materials can be constructed at a lower cost and in a smaller size, and transfers the heat of the processing tank to the processing solution in the heat exchanger more efficiently. it can.

According to the invention described in claim 6, a heater having a smaller heat generating capacity can be used.

According to the seventh aspect of the invention, there is an effect that the temperature control is not insufficient even with a small heater capacity for a long time.

According to the eighth aspect of the present invention, the energy saving of the whole automatic developing machine for photosensitive material is increased.

According to the ninth aspect of the present invention, it is possible to provide a heat exchanger which can be easily maintained and whose production cost is low.

According to the tenth aspect, clogging and corrosion due to dust can be prevented.

According to the eleventh aspect, a heat exchanger can be manufactured at lower cost.

According to the twelfth aspect of the present invention, the heat exchanger can be improved in performance and maintenance can be simplified.

According to the thirteenth aspect, a heat exchanger can be manufactured at lower cost.

According to the fourteenth aspect of the present invention, it is possible to provide an automatic developing machine for processing a photosensitive material, which is low-cost, compact and energy-saving.

According to the fifteenth aspect of the present invention, the capacity of the heater for warming up can be reduced, so that even a small heater as a whole does not make the user feel difficult to use.

[0040]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments, but embodiments of the present invention are not limited thereto.

First, an outline of the entire automatic developing machine for photosensitive material of the present invention is shown in a front sectional view of FIG. 1, a side sectional view of FIG.
The operation will be described in detail with reference to the side sectional view of the heat exchanger of FIG.

FIG. 1 shows an example of the construction of an automatic developing machine for photosensitive material of the present invention. The automatic developing machine 1 for photosensitive material shown in FIG. 1 is of a roller transport type in which, for example, a sheet-like photosensitive material 2 is transported by rollers. Hereinafter, these will be sequentially described.

In the present invention, the type and form of black-and-white and color photographic light-sensitive materials to be processed are not particularly limited. For black-and-white, for example, black-and-white photographic light-sensitive materials such as X-ray light-sensitive materials and printing light-sensitive materials The apparatus shown in this embodiment uses an apparatus for processing an X-ray photosensitive material as a black and white photographic photosensitive material.

The automatic developing machine 1 for photosensitive material shown in FIG. 1 has a developing solution tank 4, a fixing solution tank 6, and a washing tank in which a developing solution, a fixing solution and washing water are respectively contained in a main body case (not shown). 8 are arranged in this order from the right side in the figure. The capacities of the developer tank 4, the fixer tank 6, and the washing tank 8 are 10
~ 25 liters, 10-20 liters and 10
It is preferable to set it to about 20 liters.

In the developing solution tank 4, a transport roller R1 for transporting the photosensitive material 2 along a predetermined path in the tank is arranged.
Further, the same transport rollers R2 and R3 are disposed in the fixing solution tank 6 and the washing tank 8, respectively.

A crossover roller 46 is provided between each of the processing liquid tanks 4, 6, 8, and a transfer section 10 and a squeeze section 21 which will be described later. These crossover rollers 46 squeeze out the processing liquid adhering to the surface of the photosensitive material when the photosensitive material 2 is sandwiched, and suppress the carry-in of the processing liquid from the previous tank to the next tank.

Although not shown, these crossover rollers 46 are configured to be washed with, for example, water from a stock tank (not shown) so as to prevent contamination of the rollers due to adhesion of a developing solution component and a fixing solution component. It can also be.

Further, between the rollers such as near the bottom of each of the processing tanks 4, 6, and 8 and on both sides of the crossover roller 46,
A guide 12 for guiding the photosensitive material 2 to the next roller is provided.

The conveying rollers R1 to R3 and the guide 1
2 is preferably loaded in a state where it is assembled in racks 5, 7, and 9 for each processing solution tank.

The exposed photosensitive material 2 is sequentially transported in the developing solution tank 4, the fixing solution tank 6 and the washing tank 8 by the above-mentioned rollers R1, R2, R3, 46 while being immersed in each processing solution. Development, fixing, and washing with water.

A squeeze section 21 is provided on the upper left side of the washing tank 8 in FIG. A plurality of pairs of squeeze rollers R4 are installed in the squeeze section 21 along the transport path of the photosensitive material 2. The squeeze rollers R4 pinch and transport the water-washed photosensitive material 2 to remove the photosensitive material 2 from the photosensitive material 2. Remove moisture.

The drying section 11 is provided below the squeeze section 21 in FIG. The drying unit 11 includes a casing 11A and a duct 13 for supplying hot air for drying into the casing 11A.
Inside 1A, a transport roller R5 is provided along the transport path of the photosensitive material 2.

The duct 13 for supplying hot air contains a blower fan (blower) 14 and a heater 17, and is preferably about 35-100 ° C., more preferably 40-80 ° C., through the duct 13 communicating with the casing 11A. ° C
The hot air heated to a degree is supplied into the casing 11A. In the casing 11A, the photosensitive material 2 that has passed through the squeezing unit 21 is transported by the transport roller R5, and is dried by contacting the supplied hot air.

Each processing solution tank 4 of the automatic developing machine 1 for photosensitive material
In steps 6 and 8, the processing liquid is replenished and drained according to the processing.

To the developer tank 4, a developer replenisher is supplied from a developer replenisher tank 110 to a supply port 112, conduits 113 and 114,
The heat enters the inlet 115 of the heat exchanger 100A via the pump 110P, is supplied from the outlet 117 via the pipe 118, and the fixer replenisher is supplied to the fixer tank 6 from the fixer replenisher 120 via the supply port 122 and the pipe. 123, 124, enter the inlet 125 of the heat exchanger 100B via the pump 120P, and exit 127
Through a line 128. These replenishment processing solutions are used as completed replenishment processing solutions in each replenishing tank 11
0,120. The completed replenishment solution is obtained by diluting a concentrated solution (or a plurality of tablet-type parts) to a desired concentration.

The developer tank 4 and the fixing tank 6 are provided with overflow drain ports 40 and 60, respectively. When the replenisher is replenished into the developer tank 4 and the fixer tank 6 from the replenisher tanks 110 and 120 via the conduits 118 and 128, substantially the same amount of replenishment as the amount of fatigue and deteriorated developer And the fixing solution enter the heat exchangers 100A and 100B from the drains 40 and 60 via the conduits 41 and 61 and the inlets 42 and 62, respectively, and enter the partition walls 101A and 101B.
While discharging heat to the replenishing solution passing through the heat exchanger through the heat exchangers, the waste solution tank 4
It is discharged to 7,67.

Next, the heat exchangers 100A, 100B of the present invention
Will be described in some detail with reference to the cross-sectional view of FIG.

The heat exchangers 100A for the developing solution and the fixing solution,
100B has the same shape and the same structure, so that only the developer 100B will be described. The symbols in parentheses in FIGS. 3A, 3B and 3C are for the fixing solution, and those without the brackets are for the developing solution.

FIG. 3A shows a heat exchanger 100A.
Container part 1 that forms a flow path through which the developing replenisher passes
16 and a flat container portion 43A that forms a flow path through which the overflow developing solution from the developing tank 4 passes, and a partition wall 101A of a thin metal plate and outer plates 48 and 116 of the flat container portions.
A has a flat surface, and the partition wall 101A made of stainless steel or titanium is made of a thin metal and has a thickness of 0.0
Stainless steel or titanium of 1 to 0.5 mm is used to facilitate heat exchange.

The partition 101A and the outer plate 48 or 116
The distance to A is 1 to 10 mm, and the flat container portion 4
3, 116 are formed.

FIG. 3B shows a partition wall 101A having a corrugated shape and a large heat exchange area. The material and thickness of the partition are substantially the same as those in FIG. The heat exchange area is increased and the heat exchange efficiency is further improved. Although not shown, the wave shape is large and the pitch is 3 to 10.
mm, a shape having a higher vertical width of 20 to 100 mm is preferable because of good heat exchange efficiency. In this case, it is preferable to flow the liquid along a wave in parallel with the wave shape because there is no resistance of the liquid.

In FIG. 3C, the partition wall 101A is made of a flat and thin material as in FIG.
A has a corrugated shape, and the partition wall 101A has a flat surface. The developing replenisher moving in the flat container portion 116 and the overflow developing solution in the developing tank are filled in each flat container portion 11A.
6 moves randomly while waving, so that the heat exchange efficiency is excellent. The material of the outer plate is PE, P
A resin material such as P, PVC, or PVPC is used to enhance the heat insulation effect and improve the heat exchange efficiency.

As shown in FIGS. 3 (a), 3 (b) and 3 (c), the outer plates 48 and 1 forming the flat container portion 116 are formed.
The periphery of 16A is formed with grooves 48A and 116B and fitting portions 48B and 116C, respectively.
A is assembled by fitting the fitting portions 48B and 116C of the outer plates 48 and 116A while being sandwiched via the packing P fitted in the grooves 48A and 116B. An adhesive can be flowed into the fitting portion, or ultrasonic bonding can be performed. When an adhesive is used, the fitting portions 48B and 116C may be omitted.

Thus, the heat exchanger 100A is configured. Similarly, the heat exchanger 100B of the fixing unit is also configured.

Incidentally, the storage capacity of the processing liquid tank is equal to one of the replenishment processing liquid.
It is desirable that the supply amount per hour is 5 times or less,
If the storage capacity is larger than this, the effect of heating the processing liquid in the processing liquid tank by the amount of heat obtained in the heat exchanger becomes inconspicuous.

Each of the processing liquid tanks is provided with a stirring and circulating means and a filter for removing solids. The processing liquid tanks are cleaned and the solids in the overflow drainage passing through the heat exchanger are also removed. In order to prevent clogging in the heat exchanger, the operation of the heat exchanger is always smooth.

As another embodiment, as shown in the top view of FIG. 5A and the sectional side view of FIG. 5B, the heat exchanger 100A or 100B is in contact with the processing liquid tank 4 or 6. It is. Since the structure for the fixing solution is almost the same as that for the developing solution, only the structure for the developing solution will be described below.

The rising portion 44A from the lower outlet 44 of the flat container portion 43 into which the overflow flows flows to the height of the flat container 43 and is connected to the drainage passage 44B. Filled with heated overflow liquid, and
Since the outer plate 116A of A is in contact with the side wall or lower surface of the processing liquid tank, the heat exchanger 100A more efficiently transfers the heat of the developing liquid tank 4 as the processing liquid tank to the replenishment processing liquid in the heat exchanger 100A. Can communicate.

Particularly, at the time of warm-up, the heat exchanger 10
Since 0A is heated and the overflow solution is full, a sufficiently heated replenishment solution can be supplied immediately after the start of the process, and a heater having a small heating capacity can be used.

The outer plate 116A of the heat exchanger 100A and the side wall or lower wall of the processing liquid tank can be partially used.
The heat transfer of the treatment tank is further improved as compared to the case of the contact described above. The capacity of the heater can be further reduced.

Next, an embodiment in which the drying exhaust air in the drying unit 11 exchanges heat with the drying suction air will be described with reference to the automatic developing machine for photosensitive material of FIG. 1 and the side sectional view of the drying unit of FIG.

In FIG. 4, an outside air chamber 15 in which a filter 15A is arranged is provided at a suction port from the outside of the drying section 11 of the automatic developing machine 1 for photosensitive material, and purified air is connected to the outside air chamber 15. The blower 14 sucks the air through the air inlet 14A of the blower 14 and the heater 1 through the air outlet 14B.
The air is blown to the duct 13 in which 7 is set.

The high-temperature air heated to about 35 to 100 ° C. is blown onto the surface of the photosensitive material from the outlet nozzle 13A of the duct 13 provided toward the conveying path in the drying section of the photosensitive material to dry the photosensitive material. The hot air that has absorbed moisture and collected is collected in the duct 16, and a part of the hot air passes through the circulation path 16 </ b> A and again contributes to the drying of the photosensitive material. 16B, the exhaust port 16
C, the air is exhausted to the outside of the drying unit 11, and fresh dry clean high-temperature air corresponding to the exhaust air is sucked from the outside air chamber 15 by the blower 14.

At this time, the duct 16B for exhausting a part of the humid high-temperature air is arranged in a swirl shape in the outside air chamber 15, and the clean air in the outside air chamber 15 is heat-exchanged by the high-temperature humid air in the duct 16B. Blower 14 while warm
As a result, air is blown to the position of the heater 17 of the duct 13.

Therefore, since the heater 17 only needs to raise the temperature of the outside air which has been subjected to heat exchange and the temperature of which has increased, the heating load of the heater is greatly reduced.

In this way, the consumption of electric energy of the electric heater required for heating each processing solution and heating the dry air can be greatly reduced.

The washing water is supplied to the washing tank 8 by washing water supply means 36. This washing water supply means 36
As shown in FIG. 1, is connected to the water tap faucet 34 via the water meter 32 and the solenoid valve 84 so as to be able to supply water to the washing tank via the pipe 28 so that water can be supplied to the washing tank 8 from above. . Water is supplied to the empty washing tank by filling the washing water, and the inlet sensor 38 is used to detect the photosensitive material brought in and to use the washing water to replenish the washing water. The operation timing and the operation time of the replenishment of the washing water are controlled by the control means 20.

The washing tank 8 is provided with a drain port 85A for overflow washing water. When the washing water is replenished into the washing tank 8 through the pipe 28, the overflow flushing water having substantially the same amount as the replenishing amount is supplied to the overflow drain 85.
A is discharged from the tank through the overflow pipe 85. The washing water drainage includes a developing solution, a fixing solution component, a silver component gelatin eluted from the emulsion layer of the photosensitive material 2, other polymers, a surfactant, dust, dust, microorganisms or dead bodies thereof (hereinafter, these are referred to as However, they are drained through a drainage tank 86 and a filtering means 87.

The developing solution, the fixing solution, and the washing water in the processing solution tanks 4, 6, and 8 are respectively heated by heaters (not shown).
The temperature is controlled at an appropriate processing temperature of 0 ° C. or more.

The control means 20 controls the supply timing of the replenisher for the developing solution and the fixing solution and the operation of the washing water supply means 36. The control means 20 is composed of, for example, a microcomputer, and has a function of processing input information, a memory function, a timer function, an output function of various command signals, a display function, and the like.

A sensor 38 for detecting passage of the photosensitive material 2 is provided near the entrance of the photosensitive material in the developer tank 4.
This sensor 38 is connected to the control means 20 by a line 20a. The solenoid valve 84 and the control means 20 are connected by a line 20b. The replenishing pumps 110P and 120P for the replenishment processing liquid are connected by lines 20c and 20d, respectively.

The replenishment of the washing water by the operation of the solenoid valve 84 and the replenishment of the replenisher by the pumps 110P and 120P are performed every time the photosensitive material 2 is processed, and also for each unit processing amount of the photosensitive material 2 (for example, (For every 3 to 10 photosensitive materials).

[0083]

According to the present invention, heat is exchanged to utilize the waste heat energy of various processing liquids degraded and discarded or moist high-temperature air for the heating of newly supplied replenishment processing liquids and dry air. Has been greatly reduced, and for example, a high-performance mini-lab system can be spread without increasing the power capacity of the power equipment without increasing the cost.

[Brief description of the drawings]

FIG. 1 is a front sectional view of an example of an automatic developing machine for a photosensitive material of the present invention.

FIG. 2 is a side sectional view of an example of the automatic developing machine for photosensitive material of the present invention.

FIG. 3 is a side sectional view of an example of a heat exchanger for the processing liquid of the present invention.

FIG. 4 is a side sectional view of an example of a heat exchanger for dry air according to the present invention.

5A is a top view and FIG. 5B is a side sectional view of another example of the automatic developing machine for photosensitive material of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic developing machine for photosensitive materials 2 Photosensitive material 4 Developing solution tank 6 Fixing solution tank 8 Rinse tank 11 Drying unit 13,16 Duct 13A Nozzle 14 Blower 15 Outside air chamber 15A Filter 16A Circulation path 16B Exhaust duct 17 Heater 40,60 Overflow port 41, 45, 61, 65 Pipelines 42, 62 Entrance 43, 63, 116, 126 Flat container part 44, 64 Exit 47, 67 Waste liquid tank 48, 68, 116A, 126A Outer plate 100A, 100B Heat exchanger 101A, 101B Metal thin plate partition 110 Developer replenisher tank 110P, 120P Pump 120 Fixer replenisher tank

Claims (15)

[Claims] 1. A processing solution for processing a photosensitive material is stored in a processing solution tank, and means for adjusting the temperature of the processing solution to a constant temperature of 30 ° C. or higher is provided. In an automatic developing machine for a photosensitive material having means for supplying a replenishing processing solution and / or a processing agent dissolved water to a tank, the supply amount of the replenishing processing solution and / or the processing agent dissolved water is set to a maximum supply amount that can be supplied in one hour. On the other hand, the storage capacity of the processing liquid tank is set to 5 times or less, and a heat exchanger for exchanging heat between the overflow discharged from the processing liquid tank and the supplied replenishment processing liquid and / or processing agent dissolved water is provided. An automatic developing machine for photosensitive materials. And a means for storing a processing solution for processing the photosensitive material in a processing solution tank and adjusting the temperature of the processing solution to a constant temperature of 30 ° C. or more. In an automatic developing machine for a photosensitive material having a means for supplying a replenishing processing solution and / or a processing agent-dissolving water to a tank, a method in which a temperature adjusting means for a processing solution in the processing liquid tank controls an electric heater output by a temperature detecting means. Means for circulating the processing liquid in the processing liquid tank and a filter for removing solids in the processing liquid are provided, and furthermore, an overflow discharged from the processing liquid tank and a supply to the processing liquid tank are provided. A heat exchanger for moving the replenishment processing solution and / or the processing agent-dissolving water in a countercurrent direction through a thin metal plate partition wall to transfer heat. Automatic developing machine for materials. 3. A processing solution for processing a photosensitive material is stored in a processing solution tank, and means for adjusting the temperature of the processing solution to a constant temperature of 30 ° C. or higher is provided. In an automatic developing machine for a photosensitive material having a means for supplying a replenishing processing solution and / or a processing agent dissolving water to a tank, an overflow discharged from the processing solution tank in a plurality of processing steps, and an overflow supplied to the processing solution tank. A heat exchanger for exchanging heat with the replenishment treatment liquid and / or treatment agent dissolving water, and a heat exchanger for exchanging heat and exhaust gas from the drying step with air in the drying step after the treatment. An automatic developing machine for photosensitive materials, wherein the heating means in the drying step is an electric heater. 4. A processing solution for processing a photosensitive material is stored in a processing solution tank, and means for adjusting the temperature of the processing solution to a constant temperature of 30 ° C. or higher is provided. In an automatic developing machine for a photosensitive material having a means for supplying a replenishing processing solution and / or a processing agent dissolving water to a tank, an overflow discharged from the processing solution tank, the replenishment processing solution supplied to the processing solution tank, And / or providing a heat exchanger for exchanging heat with the treatment agent dissolving water, bringing the heat exchanger into contact with the treatment liquid tank, and accumulating in the heat exchanger by adjusting the temperature of the treatment liquid tank when untreated. An automatic developing machine for a photosensitive material, comprising a heat exchanger configured to heat liquid contained therein. 5. The automatic developing machine for photosensitive material according to claim 4, wherein a side surface or a lower surface of the processing liquid tank has a structure in which heat is transferred by also using an outer plate of a heat exchanger. 6. The maximum supply amount of the replenishment treatment liquid and / or treatment agent dissolving water supply means in one hour,
6. The automatic developing machine for photosensitive material according to claim 4, wherein the storage capacity of the processing liquid tank is set to 5 times or less. 7. A processing liquid temperature adjusting means for controlling the output of an electric heater by a temperature detecting means in the processing liquid tank, wherein a means for circulating the processing liquid in the processing liquid tank is provided. A filter for removing solid matter is provided,
Further, the overflow discharged from the processing liquid tank and the replenishment processing liquid and / or processing agent dissolving water supplied to the processing liquid tank are caused to flow in a countercurrent direction through a partition of a thin metal plate. The automatic developing machine for a photosensitive material according to any one of claims 4 to 6, further comprising a heat exchanger for transferring heat. 8. In a drying step after the treatment liquid tank, a heat exchanger for exchanging heat between exhaust gas and air supply from the drying step is provided, and a heating means in the treatment liquid tank step and the drying step is an electric heater. The photosensitive material automatic developing machine according to any one of claims 4 to 7, wherein: 9. A flat container portion is formed by three plates, an outer plate, a partition made of a thin metal plate, and an outer plate.
01 mm to 0.5 mm, at least one of the outer plate and the partition wall of the thin metal plate has continuous or discontinuous irregularities, and the flat container portion forms two chambers through the partition plate of the thin metal plate, and is directed toward each chamber. A heat exchanger characterized in that two kinds of liquids flow in a flow direction to exchange heat. 10. The heat exchange according to claim 9, wherein a distance between the outer plate and the partition wall of the thin metal plate is in a range of 1 mm to 10 mm, and a material of the thin metal plate is stainless steel or titanium material. vessel. 11. The outer plate is made of a resin such as PE, PP, PVC, PVPC or the like having an uneven shape on the partition side of the metal thin plate, has liquid inlets and outlets at both ends, and has two partitions of the metal thin plate. The outer peripheral portion of the outer plate is larger than the outer peripheral portion of the partition wall of the thin metal plate, and the entire periphery of the partition wall of the thin metal plate and the end portion of the outer plate is sealed and fixed with an adhesive. The heat exchanger according to claim 9 or 10, wherein: 12. The metal thin plate has a concave and convex portion except for the outer peripheral portion of the partition wall, the outer plate is made of resin and provided with a liquid inlet / outlet, and the outer peripheral portion of the outer peripheral portion of the outer peripheral portion of the metal thin plate has A groove for fixing the rubber packing is provided at the contact portion to fix the rubber packing. The outer peripheral portion of the outer plate is larger than the outer peripheral portion of the partition wall of the thin metal plate, and at the outer peripheral portion, the two outer plates are fitted. The heat exchanger according to any one of claims 9 to 11, wherein the heat exchanger is fixed by: 13. The heat exchange according to claim 9, wherein the uneven shape is a continuous wavy shape, and the wavy shape is a structure that regulates a liquid flow. vessel. 14. The heat exchanger according to any one of claims 9 to 13 is supplied to an overflow discharged from a processing solution tank of the automatic developing machine for photosensitive material according to any one of claims 1 to 8. 9. A heat exchanger for exchanging heat with a replenishing treatment liquid and / or treatment agent dissolving water.
The automatic developing machine for photosensitive materials according to any one of the above. 15. An automatic photosensitive material as claimed in claim 14, wherein a timer operation function is provided such that a warm-up operation for raising the temperature of the processing solution in each processing solution tank to a specified temperature is performed in an unattended state. Developing machine.