JPH0580479A - Heater for photosensitive material processor - Google Patents

Abstract

PURPOSE:To obtain a heater for the photosensitive material processor capable of uniformly, stably and efficiently heating plural processing tanks without being heated to a high temp. and with the heat deterioration of a processing soln. reduced. CONSTITUTION:A heater 53 and plural pipelines 44, 45 and 46 are inserted into a heat-conductive block 52 made from a molten metal, and the block 52 is cast. The heat of the heater 53 is retained by the block 52, and a processing soln. passing through the pipelines is uniformly heated. The pipelines are communicated with discrete photosensitive material processing tanks, and the processing soln. is circulated. Consequently, the heat of the processing soln. is efficiently exchanged with the heat retained by the block 52, hence the heater 53 is not heated to a high temp., the processing soln. is not transiently exposed to a high temp. at the part where the heat is supplied, the processing soln. is not deteriorated, and the service life of the heater is prolonged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for a photosensitive material processing apparatus which heats a processing solution of the photosensitive material processing apparatus.

[0002]

2. Description of the Related Art In a developing apparatus for developing a photosensitive material such as film or photographic paper, a processing tank for developing, fixing, washing, etc. is filled with each processing solution such as developing solution, fixing solution, washing water, etc. The temperature of these processing liquids is maintained at a predetermined temperature by the heater.

In general, this heater is provided with a temperature adjusting tank which is in communication with each processing tank alongside each processing tank, and a cartridge type heater in which a heater is inserted into a stainless pipe is inserted into the temperature adjusting tank. .. As a result, the heater heats the processing liquid in the temperature control tank, and this processing liquid circulates with the processing liquid in the processing tank to maintain the processing liquid in the processing tank at a predetermined temperature.

However, in the heating device using this temperature control tank, the inserted heater comes into contact with only a part of the processing liquid, and the thermal efficiency is poor in that the processing liquid in the processing tank is uniformly heated. .. Further, in order to maintain the treatment liquid in the treatment tank at an appropriate temperature (for example, 37 ° C), it is necessary to use a heater having a large heat capacity, and the heater surface temperature becomes about 100 ° C. For this reason, the treatment liquid in contact with this heater becomes locally high in temperature and causes deterioration of the liquid.

Conventionally, a specific processing bath is heated by a heater, and in other processing baths, heat is exchanged with the processing liquid of the heated processing bath to heat all the processing baths by a single heater. A configuration has also been proposed (Actual Development Sho 62-1584).
48). However, in this device, only a specific processing tank is directly heated by the heater, and the other processing tanks exchange heat with the processing solution after heating. There is a delay and it is difficult to maintain a uniform temperature in all processing tanks.

[0006]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention provides a heating device for a photosensitive material processing apparatus capable of uniformly and quickly heating the processing solution in each processing tank without causing thermal deterioration. Is the purpose.

[0007]

The invention according to claim 1 of the present application is a heating device for a photosensitive material processing device for heating a processing liquid filled in the photosensitive material processing device, the heating device comprising: a heat source; A processing liquid flow pipe arranged in the vicinity, and a metal heat conduction block which is cast in a state of enclosing both the heat source and the processing liquid flow pipe, and which transfers heat from the heat source to the processing liquid flow pipe, It has a feature.

The invention according to claim 2 of the present application is a heating device for a photosensitive material processing apparatus, which heats a processing solution filled in each of a plurality of processing tanks of the photosensitive material processing apparatus. A plurality of processing liquid flow pipes arranged in the vicinity and communicating with different processing tanks and the heat source and the processing liquid flow pipe are cast together in a wrapped state, and the heat from the heat source is transferred to each processing liquid flow pipe. And a metal heat conduction block for transmission.

The invention according to claim 3 of the present application is characterized in that it has an air blowing means for cooling the heat conducting block by blowing air.

According to a fourth aspect of the present invention, a plurality of photosensitive material processing tanks are provided, and these processing tanks contain a replenishing processing tank for replenishing the processing solution and a processing solution overflowing from the replenishing processing tank. A heating device for a photosensitive material processing device comprising an inflow processing tank to be flowed in, comprising a heat source, a processing solution flow pipe disposed near the heat source and communicating with the replenishing processing tank, the heat source and the processing solution flow path. It is characterized in that it is cast in a state where it is wrapped together with the pipe and has a metal heat conduction block for transmitting heat from a heat source to each processing liquid flow pipe.

[0011]

According to the invention of claim 1 of the present application, the metal heat conduction block is heated by the heat source. The heat retained by the heat conducting block is transferred to the processing liquid flow pipe that penetrates the heat conducting block. Therefore, the treatment liquid flowing through the treatment liquid flow pipe is heated to the required temperature by the heat retained by the heat conducting block. Since the heat-conducting block is made of metal, it has a large heat capacity and does not need to have a high surface temperature as in the conventional treatment liquid insertion type cartridge heater.
At a low temperature of about ° C, the processing liquid must have a required temperature (for example, 37.
Since it can be heated to 5 ° C.), the treatment liquid does not partially become hot and deteriorate. Further, since the processing liquid in the processing tank is sequentially circulated through the flow pipe, the processing liquid is heated quickly. Furthermore, since the entire amount of the processing liquid circulated in the flow pipe in the heat guiding block is heated by the heat guiding block, the temperature distribution inside the processing tank is likely to be uniform and stable temperature control can be performed.

According to the invention of claim 2 of the present application, when the metal heat-conducting block is heated by the heat source, the heat held by the heat-conducting block heats the plurality of processing liquid flow pipes together. Since the heat-conducting block is made of metal, it has a large heat capacity and does not partially raise the temperature of the treatment liquid. Further, since the heat conducting block has a large heat capacity, the treatment liquids in the plurality of flow pipes are heated equally, and the treatment liquids in the plurality of treatment tanks are heated to the same temperature. In particular, since the treatment liquids in the plurality of treatment tanks respectively receive the retained heat from the heat conducting block, they are rapidly heated to the same temperature. Further, since the respective processing liquid flow pipes exchange heat via the heat conducting block, the temperature of the processing liquid in each processing tank is also uniformed by this. Particularly, even when the heat generation of the heat source is stopped, the respective processing liquid flow pipes can exchange heat with each other, and the processing liquid temperature becomes uniform.

According to the invention of claim 3 of the present application, since the heat conducting block is cooled by the air blowing means, the temperature rise due to heat absorption from the motor or the hot air after the heat generation of the heat source is stopped in a high temperature environment such as summer. It can be lost. As described above, according to the present invention, it is possible to enhance the temperature adjustment accuracy only by providing the air blowing means, eliminate the radiator fan that has been conventionally used, and provide a small and simple air blowing cooling structure.

According to the invention of claim 4 of the present application, since the treatment liquid heated by the heat conducting block heats the treatment liquid in the replenishment treatment liquid tank, the inflow treatment tank in which the treatment liquid after heating overflows is also automatically operated. The temperature will be adjusted. In this case, the temperature detection for controlling the heating device enables stable temperature adjustment by detecting the temperature of the inflow treatment tank.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 schematically shows a photographic light-sensitive material developing apparatus 10 to which the present invention is applied. In this developing device 10, a color developing tank 12, a bleaching tank 14, a bleaching / fixing tank 16, 1
8, the washing tanks 22 and 24, and the stabilizing tank 26 are continuously provided in series, and the photosensitive material F after image printing is sequentially inserted into these processing tanks. Therefore, a transport rack means (not shown) for sequentially feeding the photosensitive material 28 into each processing tank is provided. Further, each of these processing tanks is filled with a developing solution, a bleaching solution, a bleaching / fixing solution, washing water, and a stabilizing solution so that the photosensitive material F to be inserted is processed.

A heater 32 is inserted from the liquid surface into the color developing tank 12 to heat the developing solution. The heater 32 is the cartridge heater described in the conventional example, and has an outer periphery made of a stainless steel tubular material. Further, in the color developing tank 12, a temperature sensor 33 is inserted near the heater 32.

The processing liquid in the color developing tank 12 is circulated by a circulation pipe 35.
Also, the pump 36 provided in the middle portion of the pipe 35 is taken out from the color developing tank 12 and then again flowed into the color developing tank 12 and stirred, whereby a uniform temperature is taken into consideration. A radiator 38 and a fan 39 are provided at an intermediate portion of the pipe 35, and the heater 3
The temperature of the developing solution is prevented from rising due to heat absorption from the pump 36 and the like after the second heating is stopped. Note that the pipe 35
A flow meter 41 is provided in the middle part of the device to send a detection signal to the control device 42, and the control device 42 can monitor that there is a constant circulating flow rate and issue an alarm in the event of a pump failure or abnormality. It has become. The control device 42 can also control the operation and stop of the pump 36 and the fan 39.

Similar to the color developing tank 12, the bleaching tank 14 and the bleaching / fixing tanks 16 and 18 are provided with circulation pipes 44, 45 and 46, respectively, which are circulated by a pump 36. Pump 3 for these pipes 44, 45, 46
A heating device 48 is arranged on the downstream side of 6 to heat the circulating treatment liquid.

In this heating device 48, as shown in FIGS. 2 to 5, a heater 53, which is a heat source, is inserted in the center of a columnar heat conducting block 52, and the pipes 44, 45 and 46 are arranged around this heater 53. It penetrates from the heater 53 at equal intervals and at equal intervals, and is in a parallel state with the heater 53.

The heat-conducting block 52 is made of molten metal, and is preferably made of aluminum, brass or cast steel, which is a good conductor of heat, and the pair of brackets 5 are arranged from the middle portion in the longitudinal direction.
4 is projected for fixing. Further, the heating device 48 can be fixed to another heating device or the like by using the bracket 54. The bolt can be screwed into the screw hole of the bracket 54, and the ground wire can be tightened together to form an arm. The heater 53 has an outer periphery formed of a stainless pipe, a heat source is inserted inside, and is embedded over substantially the entire length of the heat conducting block 52. When manufacturing the heating device 48, the heater 53, the pipe 44,
It is manufactured by placing 45 and 46 in a mold and then filling the mold with molten metal. Therefore, the heat conducting block 52 is provided around the heater 53 and the pipes 44, 45,
The heat of the heater 53 is held in close contact with the surroundings of the heater 46, and the heat of the heater 53 is transferred to the processing liquid flowing in the pipe.
It can be transmitted via 4, 45, 46 tube walls.

A temperature sensor 5 is provided in a part of the heat conducting block 52.
Six mounting holes 57 are mounted for temperature detection. In addition to the temperature sensor 56, a thermostat overheat protector can be attached. The detection signal from the temperature sensor 56 may be sent to the control device 42 so that the control device 42 controls the heat generation time of the heater 53.

A temperature sensor 58 is inserted in each of the bleaching tank 14, the bleaching / fixing tank 16, and the bleaching / fixing tank 18 to detect the temperature of the processing liquid. Further, as shown in FIG. 1, a fan 62 driven by a motor is arranged in the heat guide block 52, and is used for cooling the heat guide block 52. The temperature of each processing tank is adjusted by detecting the temperature with one of the temperature sensors 58 or the temperature sensor 56 and then heating the heater 5.
Control 3

Similarly, circulation pipes 64, 65 and 66 are connected to the washing tanks 22 and 24 and the stabilizing tank 26, respectively, and the pump 36
The processing liquid is circulated in the above, and a heating device 68 similar to the heating device 48 is provided in the middle of these pipes to heat the processing liquid similarly.

Next, the operation of this embodiment will be described. After the image is printed, the photosensitive material F is sequentially inserted from the color developing tank 12 into the processing tank on the downstream side, and a series of developing processes are performed. In the color developing tank 12, the developing solution is circulated through the pipe 35, and the temperature of the heating by the heater 32 provides a uniform processing solution temperature. Similarly, in the bleaching tank 14, the bleaching / fixing tank 16, and the bleaching / fixing tank 18, the processing liquid is circulated through the pipes 44, 45, and 46, and passes through the heat conducting block 52 of the heating device 48. The heat conducting block 52 is heated by the heat from the heater 53, and the retained heat is exchanged with the processing liquid through the pipe walls of the pipes 44, 45 and 46. Pipe 44,
Since all the circulating treatment liquids in 45 and 46 are sent to the heat exchanging section, thermal efficiency is good, and when the temperature is adjusted by any one of the temperature sensors 58 of the three treatment tanks, the heat conducting block 52.
The processing temperature of the bleaching tank 14 and the bleaching / fixing tanks 16 and 18 can be raised to and maintained at 38 ° C only by increasing the heating temperature in the inner piping portion to a maximum of about 60 ° C. Since the treatment liquid is not heated to a high temperature, liquid fatigue is eliminated. Further, since all the circulating treatment liquid passes through the pipes 44, 45 and 46 respectively, the thermal efficiency is good and the temperature rising time can be shortened to some extent as compared with the conventional case. For comparison, a temperature control method using a cartridge heater such as the color developing tank 12 is used.
When heated under exactly the same conditions (circulation flow rate, heating start treatment liquid temperature, etc.), bubbles are generated on the surface of the heating part of the cartridge heater, and the heater surface temperature rises to near 100 ° C during temperature rise, causing the liquid to deteriorate. I found out that Similarly, wash tank 2
The circulating treatment liquid is heated to a uniform temperature in the heating tanks 2 and 24 and the stabilizing tank 26 by the heating device 68.

In particular, in the heating devices 48 and 68, since each pipe is heated under uniform heating conditions, it is possible to raise the temperature of each processing tank uniformly and maintain it uniformly.
Further, after the heat generation of the heater 53 is stopped, the fan 62 is operated so that the temperature does not rise due to the influence of the heat retained by the pump 36 and the like.

6 to 9 show a heating device 72 according to the second embodiment of the present invention. In this heating device 72, the heat conduction block 73 is formed in a substantially rectangular column shape, and only one pipe 74 parallel to this is inserted near the heater 53. Further, a bracket 75 is formed so as to partially project on the heat conducting block 73. The heating device 72 of this embodiment may heat a single processing tank by itself, but as shown in FIG. 9, two heating devices 72 are fixed to each other with bolts 76 to form a plurality of heating devices. Can be used.
The heat-conducting block 73 is also made of metal as in the above-mentioned embodiment, and is formed by embedding the heater 53 and the pipe 74.

As described above, in the present invention, one heater may be provided with a single pipe or a plurality of pipes heated by the heater. When a plurality of pipes are provided, it is preferable that the pipes are evenly arranged with respect to the heater as in the first embodiment. However, when the heating temperatures of the pipes and the treatment liquid are to be changed from each other, the pipes are positively operated. The attachment positions to the heater may be provided at different distances, not evenly.

FIG. 10 shows an experimental example of the first embodiment. In this case, the environmental temperature is 10 ° C., the capacity of the heater heat source is 500 W in the color developing tank 12, the bleaching tank 14 and the bleaching / fixing tanks 16 and 18 are 250 W in total, and the washing tanks 22 and 2 are
4 and 26 are 250W in total, and the tank capacity is the color developing tank 1.
2 is 17.2 liters, bleaching tank 14, bleaching / fixing tank 1
6, the bleaching / fixing tank 18 is 5 liters each, the washing tank 22 is 3.5 liters, the washing tank 24 and the stabilizing tank 26 are each 3 liters, and the heating devices 48 and 68 are the bleaching / fixing tank 18 and the stabilizing tank 26. The temperature was controlled by the temperature detected by the temperature sensor 58. As a result, the heating amount per liquid amount in each tank is 29 W / l for the color developing tank 12, the bleaching tank 14, the bleaching / fixing tank 16, the bleaching / fixing tank 18 is 16.7 W / l, the washing tank 22, the washing tank. 24 and the stabilizing tank 26 are 26.3 W / l. The set temperature is 37.6 ° C for the color developing tank 12,
Others are set at 38 ° C.

The experimental machine of the first embodiment shown in FIG.
Looking at the relationship between the temperature rising time and the rising temperature in each processing tank, the washing tank 22, the washing tank 24, and the stabilizing tank 26 using the casting heater of the present invention are heated by the heating device 68 at substantially the same temperature. .. Further, the bleaching tank 14, the bleaching / fixing tank 16, and the bleaching / fixing tank 18 are heated by the heating device 48 almost equally. These are accurately heated to a predetermined temperature with respect to the set temperature.

FIG. 11 shows the relationship between the temperature rising time and the rising temperature in each processing tank in the experimental machine of FIG. 14 showing a comparative example. In the comparative example of FIG. 14, the color developing tank 12 is further provided with a pipe 113 via a pump 112 for stirring the processing liquid, and the bleaching tank 14 is provided with a pipe 116 via a heating device 72 and a pump 114 shown in FIG. Is provided. No heater is installed in the bleaching / fixing tank 16
The fixing tank 18 is provided with a cartridge-type heater 118 similar to the heater 32, and the bleaching / fixing tank 18 is communicated with both ends of a pipe 124 via a pump 122. The middle portion of the pipe 124 is bent in a U shape, and is a heat exchanger 126 made of a titanium pipe inserted into the bleaching / fixing tank 16.
It is said that. This heat exchanger 126 has an outer diameter of 13.5 mm
And the wall thickness is 0.5 mm. Therefore, the bleaching / fixing tank 16
Will indirectly receive the heat of the heater 118 via the processing liquid in the circulating bleaching / fixing tank 18.

A heater 132, which is similar to the heater 32, is provided in the washing tank 22, and both ends of a pipe 136 via a pump 134 are connected to the heater 132. Piping 136
The heat exchanger 14 having the same structure as the heat exchanger 126 is provided in the middle part of the
2, 144 are provided and inserted into the washing tank 24 and the stabilizing tank 26, respectively. Therefore, the washing tank 24 and the stabilizing tank 26
Also indirectly receives the heat of the heater 132 via the processing liquid in the washing tank 22. In addition, bleaching / fixing tank 16 and washing tank 2
4. Stabilization tank 26 has circulation pipes 146, 14 for stirring.
7, 148 are provided respectively, and the pumps 152 are interposed in the middle.

Here, the heater 102 of the color developing tank 12 is 5
00W, heating device 72 of the bleaching tank 14 is 250W, bleaching
The heater 118 of the fixing tank 18 is 200 W, the heater 132 of the washing tank 22 is 300 W, and the tank capacity is 17.2 liters for the color developing tank 12, the bleaching tank 14, the bleaching / fixing tank 1.
6, the bleaching / fixing tank 18 is 5 liters each, the washing tank 22 is 3.5 liters, the washing tank 24 and the stabilizing tank 26 are 3 liters. Therefore, the heating amount per liquid amount in each tank is 29 W / l for the color developing tank 12, 50 W / l for the bleaching tank 14, 20 W / l for the bleaching / fixing tank 16 and the bleaching / fixing tank 18, the washing tank 22, the washing tank. 24 and the stabilizing tank 26 are 31.6 W / l.

The bleaching tank 14 in which the heating device 72 is used alone is extremely accurately and quickly heated to a predetermined temperature. Further, the metal temperature of the heating device 72 is also 45
It can be seen that the temperature does not exceed ℃ and is safe, and the heater is not partially heated to a high temperature, and deterioration after the treatment is prevented. Bleaching / fixing tank 16, bleaching / fixing tank 18, washing tank 22
And the washing tank 24 and the stabilizing tank 26 are actually open 62-158448
Is a system in which a treatment liquid heated in another treatment tank is circulated in one treatment tank to exchange heat with the treatment liquid.
The temperature rise did not coincide with the set temperature while finally leaving a temperature difference of 1 to 2 ° C.

In both experiments, the processing tanks having the same capacity were compared, but the temperature rising rates cannot be easily compared due to the difference in the initial temperature of the processing liquid and the heater capacity. However, when the heat supply amount (W / l) per processing liquid is obtained from the capacity of the heat source of the heater and the capacity of the processing tank, and compared, the color developing tank 12 to the stabilizing tank 26 of the embodiment have 26.3 W. It can be seen that the temperature rise time is short and the thermal efficiency is good, although it is less than 31.6 W / l in the comparative example.

Further, it can be seen from FIG. 12 that the heater having the structure of the present invention is resistant to disturbance such as when the mother liquor is replaced. That is, it shows the temperature change in the washing bath 22 when the mother liquor in the washing bath 24 is exchanged with a liquid at 19 ° C., and when the mother liquor in the bath where heat exchange is performed becomes abruptly cooled, it is affected. With the heater of the present invention, the temperature change is small.
In addition, the temperature rising rate of the cold bath is high, and the time required to start the treatment can be shortened.

Similarly, as shown in FIG. 13, when the cold replenisher is added to the processing bath, the temperature change in the processing bath is small and the stability of the processing liquid temperature is high. That is, FIG. 13 shows the washing tank 2
4 shows the temperature change when a replenisher solution of 16 ° C. was replenished at a rate of 340 CC to 4 at a time. In addition, in the heating method using the current cartridge heater, the temperature is immediately raised by the heater to such a rapid temperature drop, but it is easy to overshoot and the heater of the present invention is used to recover the original set temperature. More, it may take time, the heater according to the present invention, the heat capacity of the cast metal is large, there is heat transfer from the other constant temperature control processing tank, the heat capacity of this also as a backup Since it works, it has the advantages of high temperature stability and small temperature hunting width against sudden heat fluctuations.

In the present invention, when the temperature of a plurality of processing tanks such as the bleaching tank 14 and the bleaching / fixing tanks 16 and 18 shown in FIG. It is preferable to control the temperature depending on the temperature detected in the bath or the treatment bath with low heat radiation. Further, in the processing apparatus of the type in which the replenishing solution 77 is inserted into the water washing tank 24 like the water washing tanks 22 and 24 and the processing solution overflowing from the water washing tank 24 is supplied to the water washing tank 22, the replenishing solution 77 is inserted. Since the treatment liquid temperature in the bath 24 is more likely to fluctuate than that in the washing bath 22,
Stable temperature control can be performed by controlling the heating temperature of the heating device 68 based on the temperature sensor 58 of the washing tank 22 and the stabilizing tank 26. This is because the temperature of other tanks may overshoot if the temperature of the tank with large fluctuations is adjusted. On the contrary, if the temperature is controlled in a tank with little fluctuation, heat is stably transferred from other tanks and the heat is transferred from the heater to the whole, so that the temperature fluctuation width can be reduced.

As described above, it is not always necessary to provide a temperature sensor in each processing bath, and the structure can be further simplified by providing a sensor only in the required processing bath. Further, the sensor can be omitted in the processing tanks such as the water washing tanks 22 and 24 that do not require high temperature adjustment accuracy. Bleaching / fixing tanks 16 and 18 and washing tank 2
When a plurality of treatment tanks that perform the same type of treatment as 2, 24 are provided, the heating devices are associated with the plurality of treatment tanks, and the heating devices are simultaneously heated and controlled by one heating device. Can be effective.

In the heating apparatus of the present invention, the treatment liquid flowing through the pipe is always circulated, so that the treatment liquid heats and cools the heater radiatively. The life of the heater will be extremely long. In the above embodiment, the color developing tank 12
In order to compare with the effect of this embodiment, the heater 32 used conventionally is applied, but it is naturally possible to apply the heating device 72 of the second embodiment.

Further, in the present invention, since the thermostat overheat protector can be directly attached to the heat conducting block of the heating device and the ground can be directly connected, the conventionally used ground rod or ground wire from the cartridge heater is unnecessary. Therefore, it is not necessary to separately attach the thermostat heat protector to the developing device.

In FIG. 15, instead of the temperature sensor 56 of FIG.
It shows an embodiment in which the thermostat overheat protector 155 is directly attached to the heat conducting block 52. In this case, the wiring 159 from the power supply output circuit 157 is connected in series to the thermostat 155 and the heater 53. Therefore, when the temperature of the heat-conducting block 52 rises compared to the normal time, such as when the amount of treatment liquid in the tank becomes extremely small or when the circulation pump fails and stops, it is possible to directly cut off the power supply to the heater 53.

[0042]

Since the present invention has the above-mentioned constitution, it has an excellent effect that the thermal efficiency is improved and a plurality of treatment tanks can be simultaneously heated to the same temperature and uniformly.

[Brief description of drawings]

FIG. 1 is an overall piping diagram showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a heating device used in the first embodiment,
FIG. 5 is a sectional view taken along line 11-ll of FIG. 4.

FIG. 3 is a plan view of FIG.

FIG. 4 is a right side view of FIG.

5 is a perspective view of FIG. 2. FIG.

FIG. 6 is a side view showing a heating device according to a second embodiment of the present invention.

FIG. 7 is a plan view of FIG.

FIG. 8 is a right side view of FIG.

9 is a perspective view showing a state in which two heating devices of FIG. 6 are combined.

FIG. 10 is a diagram showing a relationship between temperature and time when an experiment was conducted with the structure of the first example.

FIG. 11 is a temperature-time diagram showing the results of a comparative example.

FIG. 12 is a diagram showing the relationship between temperature and time when the mother liquor in the water washing tank is replaced with a 19 ° C. liquid.

FIG. 13 is a diagram showing a relationship between temperature and time when the 340 CC replenisher is collectively replenished in the washing tank.

FIG. 14 is an overall piping diagram of the processing apparatus used to show the results of the comparative example of FIG.

FIG. 15 is a perspective view of the heating device with a thermostat overheat protector attached.

[Explanation of symbols]

 10 Developing Device 12 Color Developing Tank 28 Photosensitive Material 44 Piping (Treatment Liquid Distribution Pipe) 45 Piping (Treatment Liquid Distribution Pipe) 46 Piping (Treatment Liquid Distribution Pipe) 48 Heating Device 52 Heat Conducting Block 53 Heater (Heat Source) 62 Fan (Blower Means) ) 64 pipes (treatment liquid flow pipe) 65 pipes (treatment liquid flow pipe) 66 pipes (treatment liquid flow pipe) 68 heating device 72 heating device

Claims (4)

[Claims] 1. A heating device for a photosensitive material processing apparatus, which heats a processing solution filled in a photosensitive material processing apparatus, comprising: a heat source; a processing solution flow pipe disposed near the heat source; and the heat source and processing. A heating device for a photosensitive material processing apparatus, comprising: a metal heat-conducting block that is cast in a state in which it is wrapped together with a liquid flow pipe and that transfers heat from a heat source to the processing liquid flow pipe. 2. A heating device for a photosensitive material processing device, which heats a processing solution filled in each of a plurality of processing tanks of the photosensitive material processing device, wherein a heating source and a plurality of heating devices are arranged in the vicinity of the heating source, each of which is different. A processing liquid flow pipe that communicates with the processing tank, and a metal heat conduction block that is cast in a state of enclosing both the heat source and the processing liquid flow pipe, and that transfers heat from the heat source to each processing liquid flow pipe. A heating device for a photosensitive material processing device, characterized in that 3. The heating device for a photosensitive material processing apparatus according to claim 1, further comprising a blowing unit that cools the heat conducting block by blowing air. 4. A photosensitive body comprising a plurality of photosensitive material processing tanks, each processing tank comprising a replenishing processing tank for replenishing a processing solution and an inflow processing tank into which a processing solution overflowing from the replenishing processing tank flows. A heating device for a material processing apparatus, wherein a heat source, a processing liquid flow pipe that is arranged in the vicinity of this heat source and communicates with the replenishment processing tank, and the heat source and the processing liquid flow pipe are both wrapped and cast. A heating device for a photosensitive material processing apparatus, comprising: a metal heat-conducting block that receives heat from a heat source and transmits the heat to each processing liquid flow pipe.