JPH11119403A - Processing liquid temperature regulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously raise the temperature of processing liquids in plural processing liquid tanks varying in liquid capacities to a specified set temperature with one heat transfer body without stopping the entire part of a device against the disconnection of heating elements. SOLUTION: The processing liquids in the respective processing liquid tanks are passed to plural cylindrical bodies 66, 68, 70, 72, 74 built in the heat transfer body 52 and are treated by the heat from the plural heating elements 54, 56, 58, 60 mounted at the heat transfer body 50. Even if one heating element is disconnected at this time, the time before the set temp. is attained merely slightly delays and the complete stop of the device does not arise. The flow passage sectional areas of the cylindrical bodies are limited and the flow velocities are increased by inserting flow passage sectional area limiting members 80 into the cylindrical bodies. The calorific value that the processing liquids receives is thus increased. The simultaneously rising of the processing liquids in the plural processing liquid tanks varying in the liquid capacities to the set temp. is consequently made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing liquid temperature control apparatus for controlling the temperature of processing liquid stored in a plurality of processing liquid tanks of a processing apparatus for developing a photosensitive material.

[0002]

2. Description of the Related Art Conventionally, in a developing apparatus for developing a photosensitive material such as a photographic film or a photographic paper, a cartridge type heater in which a heater is inserted into a stainless steel pipe is used as a heater for heating a processing solution. Is generally inserted into a temperature control tank that is connected to each processing liquid tank and heats the processing liquid in the temperature control tank and circulates with the processing liquid in the processing liquid layer to maintain a predetermined temperature. It is supposed to.

However, in the above-mentioned conventional structure, the processing liquid in contact with the heater locally becomes high in temperature, causing temperature unevenness to adversely affect the image quality and cause deterioration of the liquid.

[0004] In order to solve the above-mentioned problems, as an example, a heat source (heating element) and a pipe (cylinder) are cast into a heat-conducting block (heat transfer element), and a processing liquid is supplied to the pipe and heated at the same time. (Japanese Patent Laid-Open No. 5-80479) has been proposed to maintain the processing liquid in the processing liquid tank at a constant temperature. By the above method, the processing liquid in the plurality of processing liquid tanks can be maintained at the set temperature.

However, in the technique proposed in the above publication, when the heater is disconnected, the processing liquid in all the processing liquid tanks cannot be heated. Further, the processing liquids in the plurality of processing liquid tanks having different liquid volumes cannot be simultaneously raised to the set temperature.

[0006]

According to the present invention, in order to solve the above-mentioned problems, it is possible to simultaneously raise the processing liquid in a plurality of processing liquid tanks having different liquid volumes to a set temperature by using one heat transfer body. It is an object of the present invention to provide a processing liquid temperature adjusting apparatus which does not need to stop the entire apparatus even if some heaters are disconnected.

[0007]

According to a first aspect of the present invention, there is provided a processing solution for adjusting a temperature of a processing solution stored in a plurality of processing solution tanks provided in a processing apparatus for developing a photosensitive material. A temperature control device, which is provided in the middle of a circulation path through which the processing liquid in each of the processing liquid tanks circulates, has a heat conductive body having thermal conductivity, and is integrated with the heat conductive body and is integrated with the heat conductive body. While communicating with the circulation path of the liquid tank, respectively, a plurality of cylindrical bodies through which the processing liquid flows, and a plurality of heating elements attached to the heat transfer body, for heating the processing liquid through the cylindrical body. , Is characterized by having.

According to the first aspect of the present invention, even if one heating element is disconnected, the remaining heating elements can heat the heat transfer element. Therefore, if this heat transfer element is made of a material having good heat conductivity such as aluminum, the temperature of the heat transfer element becomes uniform. Function does not stop completely.

The invention according to a second aspect of the present invention is characterized in that a means for changing a flow rate of the processing liquid passing through the cylinder is provided in accordance with the volume of the processing liquid tank.

According to a third aspect of the present invention, the means for changing the flow rate of the processing liquid passing through the cylinder is accommodated in the cylinder, while maintaining the contact area between the processing liquid and the inner wall of the cylinder. And a flow path cross-sectional area limiting member for reducing the flow path cross-sectional area in the cylindrical body.

According to the second and third aspects of the present invention, the unit which is transmitted to the processing liquid via the cylinder by inserting the flow path cross-sectional area limiting member into the cylinder and changing the flow velocity in the cylinder. The amount of heat per time can be changed in each processing liquid tank, and the temperature of the processing liquid in the processing liquid tanks having different liquid capacities can be simultaneously raised to the set temperature by one heat transfer body.

The invention according to a fourth aspect of the present invention is characterized in that the flow path sectional area limiting member is detachable.

According to the fourth aspect of the present invention, the flow path cross-sectional area of the cylindrical body can be easily changed by making the flow path cross-sectional area limiting member detachable.

The invention according to claim 5 of the present invention is characterized in that a temperature detector is incorporated in the heat transfer element, and the temperature of the heat transfer element is controlled by a signal from the temperature detector.

According to the fifth aspect of the present invention, the temperature of the heat transfer element is controlled by a signal from a temperature detector incorporated in the heat transfer element. The detector can be one. In addition, even if an abnormal state such as a stoppage of the circulation of the processing liquid occurs, an abnormal increase in the temperature of the processing liquid can be prevented.

According to a sixth aspect of the present invention, the heating element is a ceramic heater or a nichrome wire heater.
Alternatively, it is a resistance heating element.

According to the invention described in claim 6, the apparatus can be made inexpensive by using an inexpensive ceramic heater, a nichrome wire heater, or a resistance heating element instead of the expensive cartridge type heater.

The invention according to claim 7 of the present invention is characterized in that the plurality of heating elements are independently wired.

According to the invention described in claim 7, even if one heating element is disconnected, the remaining heating elements can heat the heat transfer element.

The invention according to claim 8 of the present invention is characterized in that the temperature of a plurality of processing liquid tanks after the bleaching processing of the processing apparatus for developing the photosensitive material is adjusted.

According to the eighth aspect of the present invention, the number of parts can be reduced and the apparatus can be made inexpensive by applying the processing liquid temperature adjusting device to a plurality of processing liquid tanks after the bleaching processing.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 schematically shows a photosensitive material processing apparatus. The photosensitive material processing apparatus 10 includes a color developing tank 1.
2. Each processing solution tank of the bleaching tank 14, the fixing tank 16, the rinsing tanks 18, 20 and the stabilizing tank 22, and the color developing solution temperature adjusting device 23 for adjusting the temperature of the processing solution in the color developing tank 12.
A processing liquid temperature controller 50 for controlling the temperature of the processing liquid in each of the processing liquid tanks of the bleaching tank 14, the fixing tank 16, the rinsing tanks 18, 20 and the stabilizing tank 22, and the photosensitive material F in each of the processing liquid tanks. And a drying unit (not shown) for drying the photosensitive material F processed by each processing liquid tank.

In addition, circulation pipes 24, 2
6, 28, 30, 32, and 34 are provided, and each circulation pipe has a pump 3 for circulating the processing liquid in each processing liquid tank.
6, 38, 40, 42, 44, 46 are provided.

Each of the processing liquid tanks described above is provided in series, and the photosensitive material F after image printing is inserted into these processing liquid tanks sequentially. Each processing solution tank stores a developer, a bleaching solution, a fixing solution, a washing solution, and a stabilizing solution, respectively, so that each processing of the photosensitive material F is performed.

The processing liquid in the color developing tank 12 is supplied to the circulation pipe 2
4. It is circulated by the pump 36 and further heated by the color developing solution temperature adjusting device 23 to be adjusted in temperature.

In general, in the color developing process, since the temperature difference of the processing solution has a great influence on the shading of the image quality, the processing solution in the color developing tank contains the bleaching tank 14, the fixing tank 16, and the washing tank 1.
The temperature is strictly controlled by a color developing processing solution temperature controller 23 separately from the processing solutions in the processing solution tanks 8, 20, and 22.

The bleaching tank 14 has a circulation suction pipe 26A.
Is connected to one end of a cylindrical body 66 forming a part of the processing liquid temperature adjusting device of the present invention. Further, a discharge pipe 26B for circulation is provided at the other end of the cylindrical body 66.
Are connected to each other, and the other end of the circulation discharge pipe 26 </ b> B is attached to the bleaching tank 14. The processing liquid in the bleaching tank 14 is heated by the processing liquid temperature control device 50 through the circulation suction pipe 26A, and returned into the bleaching tank 14 through the circulation discharge pipe 26B.

The fixing tank 16 has a circulation suction pipe 28A.
Is attached, and the other end thereof communicates with one end of a cylindrical body 68 forming a part of the processing liquid temperature adjusting device 50 of the present invention. Further, the other end of the cylindrical body 68 is connected to the exhaust pipe 2 for circulation.
One end of 8B is in communication, and the other end of the circulation discharge pipe 28B is attached to the fixing tank 16. The processing liquid in the fixing tank 16 passes through the circulation suction pipe 28A, is heated by the processing liquid temperature controller 50, and returns into the fixing tank 16 through the circulation discharge pipe 28B.

The washing tank 18 has a circulation suction pipe 30A.
Is connected to one end of a cylindrical body 70 which forms a part of the processing liquid temperature adjusting device 50 of the present invention. Further, a circulation discharge pipe 3 is provided at the other end of the cylindrical body 70.
One end of OB is in communication with the other end of the circulation discharge pipe 30B, and the other end of the circulation discharge pipe 30B is attached to the washing tank 18. The processing liquid in the washing tank 18 passes through the circulation suction pipe 30A, is heated by the processing liquid temperature controller 50, and is returned into the washing tank 18 through the circulation discharge pipe 30B.

The washing tank 20 has a circulation suction pipe 32A.
Is attached, and the other end thereof communicates with one end of a cylindrical body 72 forming a part of the processing liquid temperature adjusting device 50 of the present invention. Further, the other end of the cylindrical body 72 has a discharge pipe 3 for circulation.
One end of 2B is in communication, and the other end of the circulation discharge pipe 32B is attached to the washing tank 20. The processing liquid in the washing tank 20 passes through the circulation suction pipe 32A, is heated by the processing liquid temperature controller 50, and is returned to the washing tank 20 through the circulation discharge pipe 32B.

The stabilizing tank 22 has a circulation suction pipe 34A.
Is connected to one end of a cylindrical body 74 that forms a part of the processing liquid temperature adjusting device 50 of the present invention. Further, the other end of the cylindrical body 74 is connected to the discharge pipe 3 for circulation.
One end of 4B is in communication, and the other end of the circulation discharge pipe 34B is attached to the stabilization tank 22. The processing liquid in the stabilization tank 22 passes through the circulation suction pipe 34A, is heated by the processing liquid temperature controller 50, and is returned into the stabilization tank 22 through the circulation discharge pipe 34B.

The bleaching tank 14, the fixing tank 16, and the washing tank 1
8, 20, the circulation suction pipes 26A, 28A, 30A, 32A attached to the respective processing liquid tanks of the stabilization tank 22,
In the middle of 34A, pumps 38 of the same discharge amount,
40, 42, 44, 46 are provided, and the processing liquid sucked from each processing liquid tank is pumped by these pumps.
Each processing liquid is always sent to the processing liquid temperature controller 50 at the same flow rate.

The bleaching tank 14, the fixing tank 16, and the washing tank 1
As shown in FIGS. 2 to 5, the processing liquid temperature control device 50 that heats the processing liquid in each of the processing liquid tanks of the stabilization tanks 22 and 20 penetrates the heat transfer body 52 and the heat transfer body 52. Cylindrical bodies 66, 6
8, 70, 72, 74, heating elements 54, 56, 58, 60 attached to the side of the heat transfer element 52, a temperature detector 76 incorporated in the heat transfer element, and signals from the temperature detector 76 A control device (not shown) for controlling the heat generation time of the heating elements 54, 56, 58, and 60,
8 and 60, respectively, and thermostat overheat protectors 62 and 64, as shown in FIGS.
A flow path cross-sectional area limiting member 80 is inserted into the cylinder to restrict the flow path cross-sectional area in the cylindrical body.

The heat transfer body 52 is made of molten metal, preferably made of aluminum, brass, cast steel or the like, which is a good conductor of heat, and is a rectangular cast object.

In an area where the outside air temperature is high, the temperature of the processing liquid may become higher than the set temperature due to the influence of heat generated by the motor or the like, and the processing liquid may need to be cooled. In such a case, a radiation fin 85 as shown in FIG. 6 may be attached to lower the processing liquid temperature.

The cylindrical bodies 66 and 6 penetrating through the heat transfer body 52
8, 70, 72, 74 each have the same volume,
And each is buried in parallel. For this reason, the tubular bodies 66, 68, 70, 72, 74 are
The heat from 4, 56, 58, 60 can be evenly received.

Heating element 5 attached to the heat transfer element 52
4, 56, 58, and 60 are ceramic heaters, nichrome wire heaters, or resistance heating elements.
2 attached to the side. Heating element 54 (or 5
6, 58, 60), it is necessary to replace only the failed heating element.

The temperature detector 76 incorporated in the heat transfer body 52 detects the temperature of the heat transfer body 52 and controls the heat generation time by a controller (not shown) based on the detected temperature. The temperature can be maintained at the set temperature.

The thermostat overheat protectors 62, 64 attached to the heating elements 54, 56, 58, 60 detect the temperatures of the heating elements 54, 56, 58, 60, and are operated by the circuits shown in FIGS. Heating elements 54, 56, 58,
When the temperature of the heating element 60 rises above the set temperature, the heating element 54,
The heating of the heating elements 56, 58, and 60 can be turned off to prevent the heating element from abnormally rising in temperature.

As shown in FIGS. 7 and 8, the flow path cross-sectional area limiting member 80 is a round bar-shaped member made of a material such as a synthetic resin which is hard and hard to deform. It has a conical shape. In addition, the flow path cross-sectional area limiting member 8
Protrusions 82 and 84 are provided near both ends in the longitudinal direction of the zero.

One protruding portion 82 on the conical side
As shown in FIGS. 9 and 10, when the flow path cross-sectional area limiting member 80 is inserted into the cylinder, each projection projects so as to contact the inner wall of the cylinder without any gap. As shown in FIG. 9 and FIG. 11, the projection 84 supports each projection so that it is concentric with the cylindrical body at one end of the cylindrical body, thereby limiting the insertion amount.

Therefore, when the flow path cross-sectional area limiting member 80 is inserted into the cylindrical body from the conical tip in the direction in which the processing liquid flows, the flow path cross-sectional area limiting member 80 is pressed by the processing liquid. Is stable on the concentric circle of this cylinder inside the cylinder.

The amount of heat received by the processing liquid flowing through the central portion of the cylindrical body from the inner wall of the cylindrical body is smaller than the amount of heat received by the processing liquid flowing near the inner circumference of the cylindrical body from the inner wall of the cylindrical body. Therefore, the flow path cross-sectional area limiting member 80 is inserted into the cylinder to allow all the processing liquid to flow near the periphery of the cylinder, thereby maintaining the contact area with the cylinder inner wall, and A decrease in the amount of heat received can be prevented.

Further, pumps 38, 40, 42, 44,
Since the processing liquid is always fed into the cylinder at the same flow rate, when the flow path cross-sectional area limiting member 80 is inserted into the cylinder, the flow rate increases in inverse proportion to the flow path cross-sectional area, and the same flow rate occurs at the same time. The processing solution flows. Further, since the amount of heat transferred is proportional to the flow velocity, the amount of heat received from the inner wall of the cylinder also increases.

Next, the operation of the present embodiment will be described in detail with reference to the drawings.

In this embodiment, as an example, FIG.
In the photosensitive material processing apparatus 10 shown in (1), the color developing tank 12 and the bleaching tank 14 each contain 10 l of processing solution, and the fixing tank 16, the washing tanks 18 and 20, and the stabilizing tank 22 each contain 5 l.
It is assumed that 1 processing liquid is stored and the temperature of each processing liquid is the same. Further, as shown in FIG. 9, a flow path cross-sectional area limiting member 80 for reducing the flow path cross-sectional area of the cylindrical body 66 to １ ／ is inserted into the cylindrical body 66 through which the processing liquid in the bleaching tank 14 flows. Explanation

The photosensitive material F after image printing is sequentially inserted from the color developing tank 12 into each processing solution tank on the downstream side by a conveying means (not shown) to perform a series of development processing, and dried by a drying means (not shown). .

In the color developing tank 12, the processing liquid is
4. The processing solution temperature is kept constant by being circulated by the pump 36 and heated by the color developing solution temperature adjusting device 23.

In the bleaching tank 14, the processing liquid in the bleaching tank 14 is sucked out by the circulation suction pipe 26A, and the pump 3
8 flows through the processing liquid temperature controller 50.

The processing liquid flowing through the processing liquid temperature controller 50 is supplied to the heat generating elements 54, 56, 5
Heat is exchanged with the retained heat of the heat transfer body 52 heated by the heat from the tubes 8 and 60 via the tube wall of the cylindrical body 66. Further, the processing liquid heated by the processing liquid temperature adjusting device 50 is returned to the bleaching tank 14 through the circulation discharge pipe 26B.

As described above, all the processing liquid circulating in the circulation pipe 26 flows through the processing liquid temperature controller 50 and exchanges heat, so that the heat efficiency is high. In addition, since there is no temperature unevenness and the temperature of the processing liquid does not locally rise, deterioration of the processing liquid does not occur.

By the way, a flow path cross-sectional area limiting member 80 for reducing the flow path cross-sectional area to 1/2 is inserted into the cylinder 66 through which the processing liquid in the bleaching tank 14 flows. The flow rate of the processing liquid flowing into the cylinder 66 is unchanged, and
As a result, the flow rate of the processing liquid flowing into the cylinder 66 is doubled.

Since the amount of heat transferred is proportional to the flow velocity and the contact area between the inner wall of the cylinder and the processing liquid does not change, the amount of heat received from the cylinder 66 by the processing liquid flowing in the cylinder 66 is also doubled.

However, the amount of the processing solution in the bleaching tank 14 is twice the amount of the processing solution in each of the processing solution tanks after the fixing tank 16, so that the processing solution in the bleaching tank 14 eventually becomes the fixing tank. The temperature can be raised to the same temperature as the processing liquids 16 and thereafter in the same time. As described above, since the processing liquids in the processing liquid tanks having different processing liquid volumes can be heated to the predetermined temperature in the same time, the time efficiency is high.

FIG. 14 shows the above results. FIG. 14A shows a case where the flow path cross-sectional area limiting member 80 is not used.
FIG. 4B shows the result when the flow path cross-sectional area limiting member 80 is used.

In FIG. 14A, the processing liquid after the fixing tank 16 has reached the set temperature at t ₀ , but does not reach the set temperature until the processing liquid in the bleaching tank 14 has reached the temperature t ₁ .

On the other hand, in FIG. 14B, both the processing solution after the fixing bath 16 and the processing solution in the bleaching bath 14 have reached the set temperature at t ₂ .

The flow rate may be changed by changing the discharge amount of the pump 38 instead of the flow path cross-sectional area limiting member 80, or by changing the flow rate by providing a valve.

In the fixing tank 16, the processing liquid in the fixing tank 16 is sucked out by a circulation suction pipe 28 A, and
Flowing through the processing liquid temperature control device 50 through 0. The processing liquid flowing through the processing liquid temperature controller 50 is heated by the heat from the heating elements 54, 56, 58, and 60 attached to the heat transmission element 52, and the heat of the heat transmission element 52 and the pipe of the cylindrical body 68. Heat is exchanged through the wall. Further, the processing liquid temperature controller 5
The processing liquid heated by 0 is returned to the fixing tank 16 through the circulation discharge pipe 28B.

In the washing tank 18, the processing liquid in the washing tank 18 is sucked out by the circulation suction pipe 30 A and flows through the processing liquid temperature adjusting device 50 via the pump 42. The processing liquid flowing in the processing liquid temperature controller 50 is heated by the heat generating elements 54, 56, 58, 6 attached to the heat transfer element 52.
Heat is exchanged with the retained heat of the heat transfer body 52 heated by the heat from 0 through the tube wall of the cylindrical body 70. Further, the processing liquid heated by the processing liquid temperature adjusting device 50 is returned to the washing tank 18 through the circulation discharge pipe 30B.

In the rinsing tank 20, the processing liquid in the rinsing tank 20 is sucked out by the circulation suction pipe 32 A, and flows through the processing liquid temperature adjusting device 50 via the pump 44. The processing liquid flowing in the processing liquid temperature controller 50 is heated by the heat generating elements 54, 56, 58, 6 attached to the heat transfer element 52.
Heat is exchanged with the retained heat of the heat transfer body 52 heated by the heat from 0 through the tube wall of the cylindrical body 72. Further, the processing liquid heated by the processing liquid temperature adjusting device 50 is returned to the washing tank 20 through the circulation discharge pipe 32B.

In the stabilization tank 22, the processing liquid in the stabilization tank 22 is sucked out by the circulation suction pipe 34A, and
6 flows through the processing liquid temperature controller 50. The processing liquid flowing through the processing liquid temperature control device 50 is heated by the heat from the heating elements 54, 56, 58, 60 attached to the heat transmission element 52, and the heat of the heat transmission element 52 and the pipe of the cylinder 74. Heat is exchanged through the wall. Further, the processing liquid temperature controller 5
The processing liquid heated by 0 is returned to the stabilization tank 22 through the circulation discharge pipe 34B.

Thus, the processing liquid in each processing liquid tank is heated to the set temperature in the same time.

Further, the control unit (not shown) controls the heating time of the heating elements 54, 56, 58, 60 in accordance with a signal from the temperature detector 76 incorporated in the heating element 52, and controls the temperature of the heating element 52. Keep at the set temperature. For this reason, even if an abnormal state occurs, for example, when one of the pumps stops, the temperature does not rise above the set temperature.

Further, the heating element 54 (or 56, 58,
If the temperature rises abnormally due to a failure or the like, the heating elements 54, 56 (or 58) are turned on by the thermostat overheat protector 62 (or 64) composed of circuits as shown in FIGS. , 60) is turned off.

As shown in FIG. 12, the thermistor sensor S is connected to the heating element 54 (or 56, 58, 60).
Is detected, and when the temperature rises to a certain temperature or higher, the relay RL is turned on, and as shown in FIG.
Is turned on, the heating element 54 (or 56, 58, 6
This is a mechanism in which heating to 0) is turned off. Heating element 54,
Since the wires to 56, 58, and 60 are independent of each other, even if one heating element is disconnected, the remaining heating elements can be operated continuously.

The heating elements 54, 56 (or 58, 6) are also provided by the thermostat overheat protector 62 (or 64).
When the heating to 0) is turned off, a warning sound may be sounded, or a warning light may be turned on.

This embodiment shows one example of the present invention, and various modes are possible.

For example, in the present embodiment, the flow path cross-sectional area limiting member 80 for restricting the flow path cross-sectional area of the cylindrical body to half has been described as an example. However, the present invention is not limited to this. By using a plurality of flow path cross-sectional area limiting members for variously restricting the flow path cross-sectional area such as 1/3, 1/4, etc., even if the processing liquid capacity of the processing liquid tank differs for each tank, The temperature of the processing solution in the tank can be simultaneously raised to the set temperature.

Further, the cylindrical bodies 66 and 6 penetrating through the heat transfer body 52
8, 70, 72, 74, heating elements 54, 56, 58, 60 attached to the heat transfer element 52, heating elements 54, 56, 5
Thermostat overheat protector 6 attached to 8, 60
The number of 2, 64 can be increased or decreased as needed.

The thermostat overheat protector 62 (or 64) is provided with heating elements 54, 56 (or 58, 60).
The heating elements 54 and 56 need not necessarily be in contact with
(Or 58, 60).

[0073]

As described above, according to the first to third aspects of the present invention, the member for restricting the cross-sectional area of the flow passage is inserted into the cylinder to reduce the amount of heat transmitted per unit time through the cylinder. By changing the temperature in each tank, the temperature of the processing liquid in the processing liquid tanks having different liquid volumes can be maintained at the set temperature by one heat transfer body.

According to the fourth aspect of the present invention, the flow path cross-sectional area of the cylindrical body can be easily changed by the flow path cross-sectional area limiting member.

According to the fifth aspect of the present invention, the temperature of the heat transfer body is controlled by a signal from a temperature detector incorporated in the heat transfer body, so that each of the processing liquid tanks is provided. The temperature detector can be one. Further, even when the circulation pump in one of the tanks stops, the temperature of the heat transfer body is controlled by a signal from the temperature detector, so that there is no danger of the temperature rising above the set temperature.

According to the sixth aspect of the present invention, since a heating element can be attached, an expensive cartridge heater can be changed to an inexpensive ceramic heater, a nichrome wire heater, or a resistance heating element. And the apparatus can be made inexpensive.

According to the seventh aspect of the present invention, 1
Even if one heating element breaks, the remaining heating elements can heat the heat transfer element.

According to the present invention, the processing solution in the developing solution tank requiring strict temperature control is independently temperature-controlled, and the processing solution is stored in the processing solution tank after the bleaching process. By applying the temperature control device, the number of components can be reduced, and the device can be made inexpensive.

[Brief description of the drawings]

FIG. 1 is an overall view of a photosensitive material processing apparatus.

FIG. 2 is a plan view of the processing liquid temperature adjusting device.

FIG. 3 is a side view of the processing liquid temperature adjusting device.

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a perspective view of a processing liquid temperature adjusting device.

FIG. 6 is a perspective view of a processing liquid temperature adjusting device.

FIG. 7 is a plan view of a flow path cross-sectional area limiting member.

FIG. 8 is a left side view of FIG. 7;

FIG. 9 is a side sectional view when a flow path sectional area limiting member is inserted into a cylinder.

FIG. 10 is a left side view of FIG. 9;

FIG. 11 is a right side view of FIG. 9;

FIG. 12 is a circuit diagram of a thermostat overheat protector.

FIG. 13 is a circuit diagram of a thermostat overheat protector.

FIG. 14 is a diagram showing the relationship between the temperature of the processing liquid in each processing liquid tank and time.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Photosensitive material processing apparatus 12 Developing tank 14 Bleaching tank 16 Fixing tank 18, 20 Rinse tank 22 Stabilizing tank 23 Temperature control device for color developing solution 24, 26, 28, 30, 32, 34 Circulation piping 26A, 28A, 30A, 32A , 34A Circulation suction pipe 26B, 28B, 30B, 32B, 34B Circulation discharge pipe 36, 38, 40, 42, 44, 46 Pump 50 Treatment liquid temperature control device 52 Heat transfer element 54, 56, 58, 60 Heating element 62, 64 Thermostat overheat preventer 66, 68, 70, 72, 74 Cylindrical body 76 Temperature detector 80 Flow path cross-sectional area limiting member 82, 84 Projecting portion 85 Radiation fin

Claims (8)

[Claims] 1. A processing liquid temperature adjusting device for adjusting the temperature of a processing liquid stored in a plurality of processing liquid tanks provided in a processing apparatus for developing a photosensitive material, wherein the processing liquid in each of the processing liquid tanks is provided. Provided in the middle of a circulation path through which heat is circulated, and a heat transfer body having thermal conductivity, which is integrated with the heat transfer body and communicates with the circulation path of each processing liquid tank, and the processing liquid is A processing liquid temperature adjusting device, comprising: a plurality of flowing cylindrical bodies; and a plurality of heating elements attached to the heat transfer body and configured to heat the processing liquid through the cylindrical bodies. 2. The processing liquid temperature adjusting device according to claim 1, further comprising means for changing a flow rate of the processing liquid passing through the cylinder in accordance with a liquid volume of the processing liquid tank. 3. A means for changing the flow rate of the processing liquid passing through the cylinder is accommodated in the cylinder, and while maintaining a contact area between the processing liquid and the inner wall of the cylinder, a cross-sectional area of the flow path in the cylinder. The processing liquid temperature adjusting device according to claim 2, wherein the processing liquid temperature adjusting device is a member for restricting a cross-sectional area of the flow path for reducing the size of the processing liquid. 4. The processing liquid temperature adjusting device according to claim 3, wherein the flow path cross-sectional area limiting member is detachable. 5. The heat transfer device according to claim 1, wherein a temperature detector is incorporated in the heat transfer member, and the temperature of the heat transfer member is controlled by a signal from the temperature detector. The processing liquid temperature adjusting device according to 1. 6. The processing liquid temperature controller according to claim 1, wherein the heating element is a ceramic heater, a nichrome wire heater, or a resistance heating element. 7. The method according to claim 1, wherein the plurality of heating elements are independently wired.
Item 3. The processing liquid temperature adjusting device according to item 1. 8. The processing solution temperature according to claim 1, wherein the temperature of a plurality of processing solution tanks after the bleaching process of the processing device for developing the photosensitive material is adjusted. Adjustment device.