JP2710498B2 - Heating equipment for photosensitive material processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

[0003] Generally, this heater is provided with a temperature control tank in communication with the processing tank in parallel with each processing tank, and a cartridge type heater having a heater inserted into a stainless steel pipe is inserted into the temperature control tank. . Thus, the heater heats the processing liquid in the temperature control tank, and the 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 the temperature control tank, the inserted heater comes into contact with only a part of the processing liquid, and the heat efficiency is low in that the processing liquid in the processing tank is uniformly heated. . Further, in order to maintain the processing liquid in the processing bath at an appropriate temperature (for example, 37 ° C.), it is necessary to use a heater having a large heat capacity, and the surface temperature of the heater becomes about 100 ° C. For this reason, the processing liquid in contact with the heater becomes locally high in temperature and causes liquid deterioration.

Conventionally, a specific processing tank is heated by a heater, and in other processing tanks, all the processing tanks are heated by a single heater by exchanging heat with the processing liquid in the heated processing tank. A configuration has also been proposed (Jpn.
No. 48). However, in this apparatus, only a specific processing tank is directly heated by a heater, and the other processing tanks exchange heat with the processing liquid after this heating, so that heat loss during heat exchange and rise / fall time are reduced. Due to the delay, it is difficult to maintain all the processing tanks at a uniform temperature.

[0006]

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

[0007]

According to a first aspect of the present invention, there is provided a heating apparatus for a photosensitive material processing apparatus, which heats a processing solution filled in the photosensitive material processing apparatus. A heat source, a processing liquid flow pipe disposed near the heat source, and a heat source and a processing liquid flow pipe, which are formed into an integrated block that is cast and integrated together, and heated by heat from the heat source. And a metal heat conducting block for exchanging the retained heat with the processing liquid in the processing liquid flow pipe.

A heating apparatus for a photosensitive material processing apparatus according to a second aspect of the present invention is a heating apparatus for a photosensitive material processing apparatus for heating a processing solution filled in each of a plurality of processing tanks of the photosensitive material processing apparatus. , A heat source, a plurality of processing liquid circulation pipes disposed in the vicinity of the heat source and communicated with different processing tanks, and a heat source and a processing liquid circulation pipe are formed by casting and integrating into a block. And a metal heat conducting block for exchanging heat held by the block heated by the heat from the heat source with the processing liquid in the processing liquid flow pipe.

The invention according to claim 3 of the present application is characterized in that there is provided a blowing means for cooling the heat guide block by blowing air.

In the heating apparatus for a photosensitive material processing apparatus according to the present invention, a plurality of photosensitive material processing tanks are provided, these processing tanks are replenishing processing tanks for replenishing a processing solution, and the replenishing processing tanks. A heating device for a photosensitive material processing apparatus comprising an inflow processing tank into which a processing solution overflowing from the heat source, a heat source, a processing liquid flow pipe disposed near the heat source, and connected to the replenishment processing tank, and a heat source And a processing liquid flowing pipe, which is formed into a unitary block by casting so as to include the processing liquid flowing pipe together, and heat exchanges with the processing liquid in the processing liquid flowing pipe by exchanging the retained heat of the block heated by the heat from the heat source. And a block.

[0011]

According to the first aspect of the present invention, the metal heat guide block is heated by the heat source. The heat held by the heat transfer block is transmitted to the processing liquid flow pipe penetrating the heat transfer block. Therefore, the processing liquid flowing through the processing liquid flow pipe is heated to a required temperature by the heat retained in the heat conducting block. Since the heat guide block is made of metal, it has a large heat capacity. Therefore, it is not necessary to raise the surface temperature as in the case of the conventional treatment liquid insertion type cartridge heater.
At a low temperature of about ° C, the processing liquid is heated to a required temperature (for example, 37.
Since the temperature can be increased to 5 ° C., the processing liquid does not partially rise to a high temperature and does not deteriorate. Further, since the processing liquid in the processing tank is sequentially circulated through the flow pipe, the processing liquid is quickly heated. Further, since the entire amount of the processing liquid circulated through the flow pipe in the heat guide block is heated by the heat guide block, the temperature distribution inside the processing tank is easily uniformized, 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 tubes together. Since the heat guide block is made of metal, it has a large heat capacity and does not locally increase the temperature of the processing liquid. Further, since the heat capacity of the heat guide block is large, the processing liquids in the plurality of flow pipes are heated equally, and the processing liquids in the plurality of processing tanks are heated to the same temperature. In particular, since each processing solution in each of the plurality of processing tanks receives the retained heat from the heat conducting block, it is quickly heated to the same temperature. In addition, since each processing liquid flow pipe exchanges heat via the heat guide block, the processing liquid temperature in each processing tank also becomes uniform. In particular, even when the heat generation of the heat source is stopped, the respective processing liquid flow pipes can exchange heat with each other and have a uniform processing liquid temperature.

According to the third aspect of the present invention, since the heat guide block is cooled by the air blowing means, the temperature rise due to heat absorption from the motor and the hot air after stopping the heat generation of the heat source in a high temperature environment such as in summer. Can be eliminated. As described above, according to the present invention, the temperature control accuracy can be improved only by providing the air blowing means, the radiator fan conventionally used can be eliminated, and a small and simple air cooling structure can be provided.

According to the invention of claim 4 of the present application, since the processing liquid heated by the heat guide block heats the processing liquid in the replenishing processing liquid tank, the inflow processing tank in which the heated processing liquid overflows automatically. 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]

FIG. 1 schematically shows a photographic 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. Washing tanks 22, 24 and stabilizing tanks 26 are respectively provided in series continuously, and the photosensitive material F after image printing is inserted into these processing tanks sequentially. Therefore, a transport rack means (not shown) for sequentially feeding the photosensitive material 28 to each processing tank is provided. These processing tanks are filled with a developing solution, a bleaching solution, a bleaching / fixing solution, washing water, and a stabilizing solution, respectively, so that the photosensitive material F to be inserted is processed.

A heater 32 is inserted into the color developing tank 12 from the liquid level 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 cylinder. Further, a temperature sensor 33 is inserted in the vicinity of the heater 32 in the color developing tank 12.

The processing liquid in the color developing tank 12 is supplied to a circulation pipe 35.
After being taken out of the color developing tank 12 by a pump 36 provided at an intermediate portion of the pipe 35, it is again flown into the color developing tank 12 and agitated so that a uniform temperature is obtained. A radiator 38 and a fan 39 are provided at an intermediate portion of the pipe 35, and a heater 3 is provided.
After the heating is stopped, the temperature of the developer does not rise due to heat absorption from the pump 36 or the like. Piping 35
A flow meter 41 is provided at an intermediate portion of the controller, and sends a detection signal to a controller 42. The controller 42 monitors that there is a constant circulating flow rate so that an alarm can be issued in the event of a pump failure or abnormality. It has become. The controller 42 can also control the operation and stop of the pump 36 and the fan 39.

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

As shown in FIGS. 2 to 5, a heater 53 serving as a heat source is inserted into the center of a columnar heat guide block 52, and pipes 44, 45, and 46 are connected to each other around the heater 53. It penetrates at equal intervals and at equal intervals from the heater 53 to be in parallel with the heater 53.

The heat conducting block 52 is made of molten metal, preferably made of aluminum, brass or cast steel, which is a good conductor of heat.
4 is projected and used for fixing. Further, the heating device 48 can be fixed to another heating device using the bracket 54. An arm can be formed by tightening a ground wire together with a bolt screwed into the screw hole of the bracket 54. The outer periphery of the heater 53 is formed of a stainless steel pipe, a heat source is inserted therein, and is embedded substantially over 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, 46 in a mold and then filling the mold with molten metal. Therefore, the heat guide block 52 is provided around the heater 53 and the pipes 44 and 45,
46, the heat of the heater 53 is retained in close contact with the surroundings of the heater 46, and the retained heat is transferred to the processing liquid flowing through the pipe by the pipe 4.
4, 45, 46 can be transmitted through the tube wall.

A part of the heat conducting block 52 includes a temperature sensor 5
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.

Temperature sensors 58 are inserted into the bleaching tank 14, the bleaching / fixing tank 16, and the bleaching / fixing tank 18, respectively, for detecting the temperature of the processing liquid. 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 by using one of the temperature sensors 58 or the temperature sensor 56 and controlling the temperature of the heater 5.
3 is controlled.

Similarly, circulation pipes 64, 65, 66 are connected to the washing tanks 22, 24, and the stabilizing tank 26, and a pump 36
In the middle of these pipes, a heating device 68 similar to the heating device 48 is provided to heat the processing solution 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 development processing is performed. In the color developing tank 12, the developing solution is circulated through the pipe 35, and the temperature of the processing solution is uniform by the temperature of the heater 32. In the bleaching tank 14, the bleaching / fixing tank 16, and the bleaching / fixing tank 18, the processing liquid is similarly circulated through the pipes 44, 45, and 46, and passes through the heat guide block 52 of the heating device 48. The heat guide block 52 is heated by heat from the heater 53, and exchanges the retained heat with the processing liquid through the pipe walls of the pipes 44, 45, 46. Thus, the pipe 44,
Since all the circulating treatment liquids in the heat treatment units 45 and 46 are sent to the heat exchange unit, the heat efficiency is good, and when the temperature is adjusted by any one of the temperature sensors 58 of the three treatment tanks,
The temperature of the processing solution in the bleaching tank 14, the bleaching / fixing tanks 16 and 18 can be raised and maintained at 38 ° C. only by raising the heating temperature in the piping section inside to a maximum of about 60 ° C. Since the processing liquid is not heated to a high temperature, liquid fatigue is eliminated. Further, since all the circulating treatment liquids pass through the pipes 44, 45, and 46, respectively, the heat efficiency is good, and the heating time can be shortened somewhat as compared with the conventional case. As a comparison, a temperature control method using a cartridge heater such as the color developing tank 12 is used.
When heating is performed under exactly the same conditions (circulation flow rate, heating start processing liquid temperature, etc.), bubbles are generated on the surface of the heat generating portion of the cartridge heater, and the temperature of the heater surface becomes close to 100 ° C. during the temperature rise, and the liquid deteriorates. I found out. Similarly, washing tank 2
2, 24 and the stabilizing tank 26 are also heated to a uniform temperature by heating the circulation processing liquid by the heating device 68.

In particular, in the heating devices 48 and 68, each pipe is heated under uniform heating conditions, so that the temperature of each processing tank can be raised and maintained uniformly.
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 heat retained by the pump 36 and the like.

FIGS. 6 to 9 show a heating device 72 according to a second embodiment of the present invention. In this heating device 72, a heat guide block 73 is formed in a substantially rectangular column shape, and only one pipe 74 parallel to the heater 53 is inserted near the heater 53. A bracket 75 protrudes from the heat conducting block 73. Although the heating device 72 of this embodiment may heat a single processing tank independently, as shown in FIG. 9, the two heating devices 72 are fixed to each other with bolts 76, and a plurality of heating devices are combined. Can be used.
The heat guide block 73 is also made of metal, similarly to the above embodiment, and is formed by embedding the heater 53 and the pipe 74.

As described above, according to the present invention, one or a plurality of pipes heated by this heater can be provided for one 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. The mounting positions on the heater may be provided at different distances from each other without being equal.

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

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

FIG. 11 shows the relationship between the temperature rise time and the temperature rise in each processing tank in the experimental machine of FIG. 14 showing a comparative example. In the comparative example of FIG. 14, a pipe 113 via a pump 112 for stirring the processing liquid is further provided to the color developing tank 12, and 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,
A cartridge type heater 118 similar to the heater 32 is provided in the fixing tank 18, and both ends of a pipe 124 via a pump 122 are connected to the bleaching / fixing tank 18 on the way. An intermediate portion of the pipe 124 is bent into a U-shape, and a heat exchanger 126 made of a titanium pipe inserted into the bleaching / fixing tank 16.
It has been. This heat exchanger 126 has an outer diameter of 13.5 mm.
And the thickness is 0.5 mm. Therefore, the bleaching / fixing tank 16
Receives the heat of the heater 118 indirectly via the processing solution in the circulating bleaching / fixing tank 18.

A heater 132 similar to the heater 32 is provided in the washing tank 22, and both ends of a pipe 136 via a pump 134 are communicated on the way. Piping 136
The heat exchanger 14 having the same structure as the heat exchanger 126
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, the heat of the heater 132 is indirectly received via the processing liquid in the washing tank 22. The bleaching / fixing tank 16, the washing tank 2
4. Circulation piping 146, 14 for stirring in the stabilization tank 26
7, 148 are provided, respectively, and a pump 152 is interposed in the middle.

Here, the heater 102 of the color developing tank 12
00 W, the heating device 72 of the bleaching tank 14 is 250 W
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, and 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 in the color developing tank 12, 50 W / l in the bleaching tank 14, 20W / l in the bleaching / fixing tank 16, the bleaching / fixing tank 18, the washing tank 22, the washing tank. 24, the stability tank 26 is 31.6 W / l.

Here, the bleaching tank 14 using the heating device 72 alone is quickly and very accurately heated to a predetermined temperature. Further, the metal temperature of the heating device 72 is 45
It can be seen that deterioration after treatment is prevented without exceeding ℃, being safe, and without raising the temperature of the heater partially. 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
In this method, the processing liquid heated in another processing tank is circulated to one processing tank, and heat is exchanged with the processing liquid.
The temperature rise did not coincide with the set temperature while leaving a temperature difference of 1 to 2 ° C. finally.

Although the two experiments were performed in a processing tank having the same capacity, the heating rates could not be easily compared due to differences in the initial temperature of the processing liquid and the heater capacity. However, when the heat supply amount per processing solution (W / l) is calculated 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. / L, which is smaller than 31.6 W / l of the comparative example, the heating time is short and the thermal efficiency is good.

Further, FIG. 12 shows that the heater having the structure of the present invention is strong against disturbances such as when replacing mother liquor. That is, it shows the temperature change of the washing tank 22 when the mother liquor in the washing tank 24 is exchanged with a liquid of 19 ° C. If the mother liquor in the adjacent tank with heat exchange suddenly cools, it is affected. In the heater of the present invention, the temperature change is small.
In addition, the temperature of the cold bath is increased quickly, and the time until the process can be started can be reduced.

Similarly, as shown in FIG. 13, when the cold replenisher is added to the processing tank, the temperature change of the processing tank is small and the stability of the processing liquid temperature is high. That is, FIG.
4 shows the temperature change when the replenisher at 16 ° C. was replenished at once in an amount of 340 CC. In the current heating method using the cartridge heater, such a rapid temperature decrease causes the temperature to rise immediately by the heater, but the heater tends to overshoot and recovers to the original set temperature. It may take more time, and the heater according to the present invention has a large heat capacity of the cast metal and heat transfer from the processing tank whose temperature has been controlled to another constant value. Since it works, the temperature stability is high and the hunting width of the temperature is small against sudden heat fluctuation.

In the present invention, when a plurality of processing tanks, such as the bleaching tank 14, the bleaching / fixing tanks 16 and 18, shown in FIG. It is preferable to control the temperature based on the detected temperature of the tank or the processing tank having small heat radiation. Further, in a processing apparatus in which the replenisher 77 is inserted into the rinsing tank 24 as in the rinsing tanks 22 and 24 and the processing solution overflowing from the rinsing tank 24 is supplied to the rinsing tank 22, the rinsing in which the replenisher 77 is inserted is performed. Since the temperature of the processing liquid in the tank 24 is more likely to fluctuate than in the washing tank 22,
By controlling the heating temperature of the heating device 68 based on the temperature sensors 58 of the washing tank 22 and the stabilizing tank 26, stable temperature management can be performed. This is because there is a possibility that the temperature of another tank may overshoot when temperature is controlled by a sensor of a tank having a large fluctuation. On the other hand, if the temperature is controlled in a tank with little fluctuation, heat transfer from another tank whose temperature is stably controlled and heat transfer from the heater to the whole occur, and the temperature fluctuation width can be reduced.

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

In the heating apparatus of the present invention, since the processing liquid flowing through the piping is constantly circulated, the processing liquid causes the heater to be radiated and cooled, and the heater itself does not become high in temperature. The life of the heater is also extremely long. In the above embodiment, the color developing tank 12
Applied the heater 32 conventionally used for comparison with the effect of the present embodiment, but it is of course possible to apply the heating device 72 of the second embodiment.

Further, in the present invention, the thermostat overheat protector can be directly attached to the heat conducting block of the heating device, and the ground can be directly connected. Therefore, the conventionally used grounding rod and the ground wire from the cartridge heater are unnecessary. Therefore, there is no need to separately attach the thermostat heating preventer to the developing device.

FIG. 15 shows an example in which the temperature sensor 56 of FIG.
This shows an embodiment in which the thermostat overheat protector 155 is directly attached to the heat conducting block 52. In this case, a wiring 159 from the power supply output circuit 157 is connected to the thermostat 155 and the heater 53 in series. Therefore, when the temperature of the heat guide block 52 rises compared to the normal state, such as when the processing liquid in the tank becomes extremely small, or when the circulating pump fails, the power supply to the heater 53 can be directly cut off.

[0042]

As described above, the present invention has an excellent effect that the thermal efficiency can be improved and the plurality of processing tanks can be simultaneously heated to the same temperature and uniformly at the same temperature.

[Brief description of the drawings]

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

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

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a right side view of FIG. 2;

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

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. 6;

FIG. 8 is a right side view of FIG.

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

FIG. 10 is a diagram showing a relationship between temperature and time when an experiment was performed using the structure of the first embodiment.

FIG. 11 is a diagram of temperature and time showing the result of the comparative example.

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

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

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

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 developing device 12 color developing tank 28 photosensitive material 44 pipe (processing liquid flow pipe) 45 pipe (processing liquid flow pipe) 46 pipe (processing liquid flow pipe) 48 heating device 52 heat conduction block 53 heater (heat source) 62 fan (blowing means) ) 64 piping (processing liquid distribution pipe) 65 piping (processing liquid distribution pipe) 66 piping (processing liquid distribution pipe) 68 heating device 72 heating device

Claims (4)

(57) [Claims] 1. A heating device for a photosensitive material processing apparatus for heating a processing liquid filled in a photosensitive material processing apparatus, comprising: a heat source; a processing liquid flow pipe arranged near the heat source; The liquid flow pipe is cast so that it is included together.
The heat from the heat source
Heat of the block heated by the
And a metal heat- conducting block for exchanging heat with the processing liquid in the apparatus. 2. A heating device for a photosensitive material processing apparatus for heating a processing solution filled in each of a plurality of processing tanks of the photosensitive material processing apparatus, comprising: a heat source; and a plurality of heat sources disposed near the heat source. The processing liquid flow pipe communicated with different processing tanks, and the heat source and the processing liquid flow pipe are cast so as to include both the heat source and the processing liquid flow pipe.
The heat from the heat source
Heat of the block heated by the
And a metal heat- conducting block for exchanging heat with the processing liquid in the apparatus. 3. The heating device for a photosensitive material processing apparatus according to claim 1, further comprising a blower for cooling the heat guide block by blowing air. 4. A plurality of photosensitive material processing tanks are provided. These processing tanks include 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 apparatus for material processing apparatus, a heat source is disposed to the vicinity of the heat source, a treatment liquid circulation pipe which communicates to the replenishing processing tank, and the heat source and the processing liquid flow pipe, cast as harboring both Including
The heat from the heat source
Heat of the block heated by the
And a metal heat- conducting block for exchanging heat with the processing liquid in the apparatus.