JPH1130845A - Photographic processing equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To supply a processing liquid to a processing tank with a simple structure,
To provide a photographic developing apparatus equipped with a pump for discharging a processing liquid and a structure for detecting an abnormality of a valve. The amount of the processing liquid replenished to the processing tank (11) is controlled to be equal to the amount of the processing liquid discharged from the processing tank (11), and is output from a liquid level sensor (26). A signal corresponding to the liquid level of the processing tank (11) before the replenishment and discharge of the processing liquid, and a signal corresponding to the liquid level of the processing tank (11) after the replenishment and discharge are performed. A photographic development processing apparatus having a structure for detecting an abnormality of at least one of a replenishment side pump (22), a valve and a discharge side pump (29), or a valve based on the above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing liquid replenishing means for replenishing a processing liquid into a processing tank, a processing liquid discharging means for forcibly discharging a processing liquid from the processing liquid, and a processing liquid in the processing liquid. The present invention relates to a photographic processing apparatus provided with a liquid level fluctuation detecting means for detecting a liquid level position of a liquid.

[0002]

2. Description of the Related Art In a photographic developing apparatus, for example, a developing tank, a bleaching tank, a fixing tank and the like (hereinafter collectively referred to as a processing tank) are provided for sequentially performing a developing process, and a developing solution is provided in each tank. , A developing solution (hereinafter, generally referred to as a processing solution) such as a bleaching solution, a fixing solution, and a stabilizing solution. The photographic material subjected to the printing processing is developed by passing through each processing tank sequentially, and then dried by a drying device and discharged. The processing liquid is replenished from the processing liquid tank to the processing tank in accordance with the processing amount of the photosensitive material so that a constant concentration is maintained. Further, it is necessary to supply the amount of evaporated water in order to compensate for the change in concentration due to the release of water due to evaporation. The amount of water evaporation varies depending on the ambient temperature and humidity, the temperature of the processing liquid itself, and also depending on whether the apparatus is operating or stopped.

In order to exchange the processing liquid, the processing liquid is normally replenished by using a supply pump from the processing liquid tank to the processing tank, and when the processing liquid in the processing tank is filled to a certain height, the waste liquid tank is discharged. A method is employed in which the processing liquid is discharged based on the principle of overflow. As another method, there is a method in which the processing liquid in the processing tank is discharged to a waste liquid tank by a discharge pump without using the principle of overflow of the processing liquid in the processing tank. As described above, the supply pump, the discharge pump, and the valves associated therewith are important parts for appropriately maintaining the state of the processing liquid, and it is necessary to constantly manage whether or not these are functioning properly. . Conventionally, in order to detect the malfunction of these pumps, a rotation detection device has been provided in the motor of the pump.

[0004]

However, in the method of detecting a malfunction of the pump by providing a rotation detecting device, only the operation of the motor of the pump can be checked. There is a problem that cannot be detected. SUMMARY OF THE INVENTION An object of the present invention is to provide a photographic processing apparatus which has a simple structure and includes means for detecting abnormality of at least one of a processing liquid replenishing means including a pump and a valve and a processing liquid discharging means.

[0005]

To achieve the above object, a photographic processing apparatus according to the present invention comprises a processing solution replenishing means for replenishing a processing solution to a processing tank, and a processing solution forcibly supplying the processing solution from the processing solution. A processing liquid discharging means for discharging the processing liquid to the processing tank, a liquid level fluctuation detecting means for detecting a change in the liquid level of the processing liquid in the processing tank, and an amount of the processing liquid replenished to the processing tank by the processing liquid replenishing means. The processing liquid replenishing means and the processing liquid discharging means are controlled so that the amounts of the processing liquid discharged from the processing tank by the processing liquid discharging means are equal, and the processing liquid is outputted from the liquid level fluctuation detecting means, A first signal corresponding to the liquid level of the processing tank before the replenishment of the processing liquid by the replenishing means and the discharging of the processing liquid by the processing liquid discharging means, and the first signal after the replenishment and the discharging are performed. No. corresponding to the liquid level in the processing tank Based on the signal, it is provided with a said abnormality detecting means for detecting at least one of the abnormality of the processing liquid discharge means and said processing liquid replenishing means.

As described above, when the replenishing amount of the processing liquid by the processing liquid replenishing means is equal to the discharging amount of the processing liquid by the processing liquid discharging means, both the processing liquid replenishing means and the processing liquid discharging means function normally. If there is no change in the liquid level of the processing liquid in the processing tank, the first level corresponding to the liquid level is not changed.
The signal and the second signal are ideally the same. However, if there is an abnormality in the processing liquid replenishing means, the amount of the processing liquid to be replenished becomes smaller than that of the discharged processing liquid, and the level of the processing liquid drops. Conversely, if an abnormality occurs in the processing liquid discharging means, the amount of the processing liquid to be replenished becomes larger than that of the discharged processing liquid, and the level of the processing liquid rises. In any case, the change in the liquid level is detected by the first liquid level fluctuation detecting means.
The abnormality detection means makes a judgment by comparing the signal and the second signal. Therefore, for example, even when an abnormality occurs in the valve of the processing liquid replenishing means, it is possible to detect the abnormality.

In one preferred embodiment of the present invention, the abnormality detecting means is configured to output an abnormality warning signal when a difference between the first signal and the second signal exceeds a predetermined range. Is preferred. This is because when a photosensitive material such as a film passes through the processing tank, a wave is generated on the processing liquid level in the processing tank, so that a predetermined allowable range is provided. With this configuration, it is possible to prevent a change in the liquid level due to the wave from being erroneously recognized as an abnormality of the processing liquid replenishing means or the processing liquid discharging means. In addition, it is possible to output an abnormality warning signal to notify the operator of an abnormality through, for example, a display terminal, or to prevent new photosensitive material from entering the processing tank. For this reason, it is possible to prevent the processing of the photosensitive material while at least one of the processing liquid replenishing unit and the processing liquid discharging unit is in an abnormal state, and to perform the photographic development processing in a more ideal state. It becomes possible.

In addition to the abnormalities in the processing liquid replenishing means and the processing liquid discharging means, the evaporation of the water in the processing tank and the evaporation of the water are compensated for by the change in the liquid level in the processing tank. There is water replenishment by water replenishment means. In order to eliminate these causes, in a preferred embodiment of the present invention, the abnormality detecting means compares the first signal and the second signal within a certain time before and after the replenishment and the discharge are performed. Thus, it is preferable to detect the change in the liquid level of the processing liquid. With this configuration, the first signal and the second signal can be compared with each other before and after the replenishment and discharge of the processing solution is performed and within a relatively short time interval. The change in the liquid level due to the evaporation of the water and the change in the liquid level due to the rehydration of the water by the water replenishing means can be ignored. Can be prevented from being detected as an abnormality.

In a preferred embodiment of the present invention,
At least one of the processing liquid replenishing means and the processing liquid discharging means by detecting a change in the liquid level of the processing liquid based on the reference liquid level signal corresponding to the reference liquid level and the second signal. It is also possible to configure so as to detect the abnormality of. According to this structure, the abnormal state can be detected by comparing the second signal corresponding to the liquid level after the replenishment and the discharge of the processing liquid with the reference liquid level signal corresponding to the reference liquid level. Further simplification is possible. As an example, it is possible to set a liquid level obtained by performing water refilling performed by the water refilling means as the reference liquid level.

Further, it is not always necessary to detect an abnormality based on the first and second signals obtained before and after the replenishment and discharge of the processing liquid on the liquid level of the processing tank. When the difference between the water replenishment amount and the reference water replenishment amount becomes equal to or more than a certain amount, it is possible to determine that at least one of the processing liquid replenishing means and the processing liquid discharging means is abnormal. For example, after replenishment and discharge of the processing liquid, it is also possible to judge this abnormality when replenishing water for compensating for evaporation of water. In this method, first, the processing liquid is replenished and discharged. If there is an abnormality in at least one of the processing liquid replenishing means and the processing liquid discharging means, the level of the processing liquid changes. For example, if there is an abnormality in the processing liquid replenishing means, the liquid level will be lower than an ideal level. Then, in order to compensate for the evaporation of water, if water replenishment is attempted until the treatment liquid reaches the reference liquid level, the reference water replenishment amount, which is the amount of water evaporation expected under the condition where the treatment tank is placed, is taken. It is necessary to refill more than water. Therefore, when the difference between the water replenishment amount required for the liquid level to reach the reference liquid level by the water replenishment means and the reference water replenishment amount corresponding to the expected water loss amount is equal to or more than a certain amount, the processing liquid It can be configured to determine that there is an abnormality in at least one of the means and the processing liquid discharging means. Here, the reason why the allowable amount equal to or more than the predetermined amount is provided is to remove an error due to a wave or the like.

Here, since the evaporation amount of water depends on the temperature, the humidity and the interval of the rehydration (the predetermined time), the reference rehydration amount is determined by considering at least one of these factors. The amount of rehydration can be determined accurately. Other features and advantages of the present invention will become apparent from the following description of embodiments with reference to the drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A photographic processing apparatus according to the present invention will be described below with reference to the drawings. The present invention can be applied to any photographic development processing apparatus such as a film development machine or a printer processor that continuously processes paper development from photographic printing. In this specification, a film development machine will be described as an example. As shown in FIG. 1, the film developing machine 100 has a film loading section 2 for loading a film 1 as an example of a photographic photosensitive material having a leader connected to the leading end, and a film loading section 2 for developing a film 1 fed from the film loading section 2. A film developing unit 3 for processing, and a film drying unit 4 for heating the film 1 after the developing process by a drying heater and drying it by warm air sent out by a drying fan.
And a discharge unit 5 for discharging the dried film 1 and a film receiving unit 6 for temporarily storing the discharged film 1. The film 1 loaded in the film loading unit 2 is transported while being sandwiched between the transport roller and the idler roller, and is sent to the film developing unit 3. An optical sensor 7 is provided near the entrance of the film developing unit 3. The length of the film which is carried into the film developing unit 3 and developed is obtained from the signal of the optical sensor 7 and the film transport speed.

In the film developing section 3, a developing solution, a bleaching solution, a fixing solution,
A developing processing area 10 in which seven processing tanks each filled with a developing processing liquid such as a stabilizing liquid are formed, and transport roller units 9 having different lengths for transporting the film 1 in the developing processing area 10 are provided. Have been. 7 treatment tanks 11
17 are arranged in order of the transport direction of the film 1,
The second deepest tank is the developer processing tank 11,
The next is a bleaching solution processing tank 12, the next two are fixing solution processing tanks 13 and 14, and the three shallow tanks are stabilizing solution processing tanks 15 to 17. Each processing tank has a substantially similar structure even if the depth is different.

Next, an embodiment of the present invention will be described with reference to FIG. In this embodiment, the processing tank 11 for a developing solution will be described as an example of application of the present invention, but the present invention can be applied to other processing tanks. As shown in FIG. 2, a developing solution tank 20 for storing a developing solution as an example of a processing solution and a developing solution tank 20 for replenishing the developing solution to the developing solution processing tank 11 are attached to the developing solution processing tank 11. Developer tank 2
0 and a processing solution pump 11 for supplying a replenishing line 21 for communicating between the developing solution processing tank 11 and the developing solution processing tank 11.
A water tank 23, a water supply line 24, and a water supply pump 25 that constitute water replenishment means for supplying water to the water supply system are provided. Developing solution tank 20, replenishing line 21, and processing solution pump 2
Reference numeral 2 constitutes a processing liquid replenishing means. This processing tank for developer 1
1 further includes a discharge line 27 and a discharge pump 2 which constitute processing liquid discharge means for forcibly discharging the processing liquid from the processing tank.
9 are provided. The processing liquid is sent to the waste liquid tank 28 by the discharge pump 29. Further, a liquid level sensor 26 is provided as a liquid level fluctuation detecting means for detecting a fluctuation in the liquid level of the processing liquid.

Here, the treatment liquid pump 22, the water supply pump 25, and the discharge pump 29 have substantially the same structure and are generally used pumps, so that detailed description is omitted. Each has a driving pump motor and a valve. In the prior art, a rotation detection device for checking whether the pump motor is functioning properly is provided. However, in the present invention, as described below, the motor without the rotation detection device is provided. And abnormality of the valve can be detected. Further, the processing liquid pump 22, the water supply pump 25, and the discharge pump 29 are controlled by a control unit 30 having a CPU,
The output signal from the liquid level sensor 29 is also sent to the control unit 30. The control unit 30 functions as the abnormality detecting means for detecting an abnormality of at least one of the processing liquid replenishing means and the processing liquid discharging means.

Next, how the control unit 30 functions as abnormality detecting means will be described. The control unit 30 includes a processing liquid pump 22, a water supply pump 25, and a discharge pump 29.
The amount of the processing liquid or the water supplied or discharged by the method is adjusted by adjusting the time for operating them. Therefore, in the present embodiment, the processing liquid pump 22
And the discharge pump 29 have the same flow rate per unit time. Therefore, by sending an operation signal to these for the same time and operating them for the same time, the processing tank 11 is replenished by the processing liquid replenishing means. The processing liquid replenishing means and the processing liquid discharging means are controlled so that the amount of the processing liquid and the amount of the processing liquid discharged from the processing tank 11 by the processing liquid discharging means become equal. Here, the processing liquid pump 22 and the discharge pump 29
May be activated simultaneously, or they may be activated at staggered times. The liquid level sensor 26 outputs a first signal and a second signal corresponding to the liquid level in the processing liquid before and after the replenishment and discharge of the processing liquid to the control unit 30.

As described above, when the replenishing amount of the processing liquid by the processing liquid replenishing means is equal to the discharging amount of the processing liquid by the processing liquid discharging means, both the processing liquid replenishing means and the processing liquid discharging means function normally. If there is no change in the liquid level of the processing liquid in the processing tank, the first level corresponding to the liquid level is not changed.
The signal and the second signal are ideally the same. However, for example, if there is an abnormality in the processing liquid replenishing means such as a valve of the processing liquid pump, the amount of the processing liquid to be replenished becomes smaller than the discharged processing liquid, and the level of the processing liquid drops. Conversely, if an abnormality occurs in the processing liquid discharging means, the amount of the processing liquid to be replenished becomes larger than that of the discharged processing liquid, and the level of the processing liquid rises. In any case, the control unit 30 functioning as the abnormality detecting means determines the change in the liquid level by comparing the first signal and the second signal from the liquid level fluctuation detecting means. Therefore, for example, even when an abnormality occurs in the valve of the processing liquid replenishing means, it is possible to detect the abnormality. When the controller 30 recognizes an abnormality in this way, it outputs an abnormality warning signal, notifies the operator of the abnormality through a display terminal (not shown), and prevents new photosensitive material from entering the processing tank. Configuration. For this reason, it is possible to prevent the processing of the photosensitive material while at least one of the processing liquid replenishing means and the processing liquid discharging means is in an abnormal state, and to perform the photographic development processing in a more ideal state. You can.

When detecting an abnormality by comparing the first signal and the second signal, it is necessary to exclude factors other than a change in the liquid level due to an abnormality in the processing liquid replenishing means and the processing liquid discharging means. One of the factors is that film 1
And surface waves generated when the photosensitive material passes through the processing tank 11. The difference between the first signal and the second signal exceeds a predetermined range so that the control unit 30 functioning as an abnormality detecting unit does not determine the error due to the surface wave as an abnormality of the processing liquid replenishing unit or the processing liquid discharging unit. It is configured to output an abnormality warning signal only in such a case. Another factor other than the change in the liquid level due to the abnormality of the processing liquid replenishing means and the processing liquid discharging means is water evaporation. Therefore, for example, when comparing the first signal and the second signal, if these two signals are performed at a large interval in time, the liquid of the processing liquid is evaporated by evaporation until the second signal is detected. Face down,
There is a risk that this is determined to be an abnormality of the processing liquid replenishing means. Therefore, the first signal and the second signal need to be detected and compared within a fixed time before and after the replenishment and discharge of the processing liquid. The certain time varies depending on physical conditions such as the temperature and humidity in which the processing tank 11 is placed, development processing conditions such as the processing amount of the film 1, and the like, and is determined based on these conditions. This determination may be made automatically by the control unit 30 based on the physical condition determined by an output signal from a temperature sensor or a humidity sensor (both not shown), the development processing condition, and the like. And
In consideration of these conditions, the operator may make an input using a terminal or the like.

FIG. 3 shows a flowchart of a process followed by the control unit 30 for detecting an abnormality in the processing liquid replenishing means and the processing liquid discharging means according to the present embodiment. This process will be described. In the present embodiment, from the start 40, first, water replenishment control is performed to replenish water lost due to evaporation or the like. It is desirable that the liquid level in the processing tank 11 is ideally maintained at the reference liquid level, and when the liquid level is at this level, the concentration of the processing liquid such as the developing solution in the processing tank is reduced to the developing liquid tank 20. Are set so as to have the same concentration as that of the processing liquid. However, the liquid level actually drops due to evaporation of water.
Therefore, the reference liquid level is defined as a level that can be detected by the liquid level sensor 26, and the water supply pump 25 is periodically operated, and the liquid level reaches the reference liquid level by the liquid level sensor 26. Water is replenished until is detected. This series of controls is referred to as water replenishment control 41 here. At this point, initialization of parameters used for abnormality detection is performed. Here, T is the time, TEND is the time for operating the processing liquid pump 22 and the discharge pump 29, and R is the first and second signals from the liquid level sensor 26 (S1 in FIG. 3 respectively).
And S2).

In the initial setting stage 42, T is set to zero, and TEND and R are determined according to physical conditions such as temperature and humidity in which the processing tank 11 is placed and development processing conditions such as the processing amount of the film 1. Differently, it is determined based on these conditions. Next, the controller 30 records the first signal S1 output from the liquid level sensor 26 at the stage indicated by 43. Next, the operation of the processing liquid pump 22 and the discharge pump 29 is started at 44, and these pumps are continuously operated for a time set in TEND in a loop of 45. Thereafter, the operation of the processing liquid pump 22 and the discharge pump 29 is stopped at the stage indicated by 46. Next, the control unit 30
At the stage indicated by 7, the second signal S2 output by the liquid level sensor 26 is recorded. At the same time, the difference between the first signal S1 and the second signal S2 is calculated, and the value is recorded as d. In the next 48 steps, it is determined whether or not the absolute value of d is larger than the determined allowable range R. if,
When the absolute value of d is larger than R, the difference between the liquid level of the treated water before and after the treatment liquid is replenished by the treatment liquid pump 22 and the discharge pump 29 is the difference between these pumps 22, 2
Step 49 of determining that the processing liquid replenishing means and the processing liquid discharging means including No. 9 is abnormal and outputting an abnormality warning signal is performed. The abnormality warning signal is used as a trigger, and the control unit 30 notifies the operator of the abnormality through a display terminal (not shown) to prevent new photosensitive material from entering the processing tank. At this time, if d is positive, it is determined that there is an abnormality in the processing liquid discharging means, and if d is negative, it is determined that there is an abnormality in the processing liquid replenishing means, and this is displayed on the display terminal.

At the stage 48, if d is smaller than R, the difference between the liquid level of the treated water before and after the treatment liquid is replenished by the treatment liquid pump 22 and the discharge pump 29 is determined by these pumps 22, 29. Is not determined as an abnormality of the processing liquid replenishing means and the processing liquid discharging means, and no processing is performed, and the process is stopped 50 here. As described above, this takes into account fluctuations in the liquid level due to factors other than abnormalities in the processing liquid replenishing means and the processing liquid discharging means.
In the process of detecting abnormality in the present embodiment, the first signal S1
Is substantially the same as the time interval between the step 43 in which the processing signal is recorded and the step 47 in which the second signal S2 is recorded.
And TEND at which the discharge pump 29 operates,
This is performed in order to detect the first and second signals within a certain period of time and to reduce errors due to evaporation of water. However, the certain time may be set to have a certain time width such that the evaporation of water does not exceed R.

Further, in the present embodiment, the first signal S1 from the liquid level sensor 26 is performed immediately before the replenishment of the processing liquid. However, instead of detecting the first signal S1, the first signal S1 is set to the reference liquid level. A corresponding reference liquid level signal is set in advance, the value of this signal is recorded in the control unit 30, and after the replenishment of the processing liquid, the second signal S2 is detected within a certain time, When the absolute value d of the difference between the level signal and the second signal S2 exceeds the allowable range R, an abnormality warning signal may be output. This reference liquid level, for example,
The liquid level may be set to the level of the processing liquid immediately after the water replenishment performed at the beginning of the day is performed. FIG. 4 is a flowchart illustrating a process of detecting an abnormality of the processing liquid replenishing unit and the processing liquid discharging unit according to another embodiment. Also in this alternative embodiment, in the apparatus shown in FIG. 2, the control unit 30 functions as an abnormality detection unit. However, the difference from the above embodiment is that after the replenishment and the discharge of the processing liquid are performed, In the stage of water replenishment performed in step (1), the difference between the actually performed water replenishment amount and the calculated reference water replenishment amount is determined to detect an abnormality in the processing liquid replenishing means and the processing liquid discharging means. In this embodiment, the liquid level sensor 26 is called a liquid level detecting means.

As shown in FIG. 4, the processing liquid is replenished and discharged in steps 60 to 64. This process is
Since it is the same as the preceding example, the description will not be repeated,
Also in this case, the amount of the processing liquid replenished by the processing liquid pump 22 and the amount of the processing liquid discharged by the discharge pump 29 are the same. Here, T1 indicates time, and T1
END is the time required to replenish and drain an amount of processing solution to be replenished and drained. If at least one of the processing liquid replenishing means and the processing liquid discharging means has an abnormality, there is a change in the level of the processing liquid. For example, if there is an abnormality in the processing liquid replenishing means, the liquid level will be lower than an ideal level. In the next 65 steps, initialization of the parameters for the rehydration step is performed. Here, T2 is a time, and ESTT is a rehydration of an amount (reference rehydration amount) predicted to be necessary to raise the liquid level which has been lowered due to evaporation from the previous rehydration cycle to the reference liquid level. Is the time needed to The reference water replenishment amount is determined by the control unit 30 based on physical conditions such as the temperature and humidity in which the treatment tank 11 is placed and the time interval of water replenishment.

Next, at step 66, the water supply pump 25 is operated, and at step 67, the signal S3 from the liquid level sensor 26 is output.
Is compared with a preset reference liquid level signal so that the liquid level is maintained until the liquid level reaches the reference liquid level. When the liquid level reaches the reference liquid level, at step 68, the time T2 required so far is compared with the time ESTT required to refill the reference rehydration amount. If the absolute value of the difference between these values is larger than the set fixed amount DT, it is determined that at least one of the processing liquid replenishing means and the processing liquid discharging means has an abnormality,
At 69, an abnormality warning signal is output. The abnormality warning signal is used as a trigger, and the control unit 30 notifies the operator of the abnormality through a display terminal (not shown) to prevent new photosensitive material from entering the processing tank. At this time, T2-
If ESTT is positive, it is determined that there is an abnormality in the processing liquid discharge means. If T2-ESTT is negative, it is determined that there is an abnormality in the processing liquid replenishing means, and this is displayed on the display terminal.

Here, the predetermined allowable amount DT is for eliminating an error due to a wave or the like. Furthermore, since the evaporation amount of water depends on the temperature, humidity, and the interval (constant time) at which water is replenished, the reference water replenishment amount is determined accurately in consideration of at least one of these factors. Can decide. In these embodiments, for the sake of simplicity, the processing tank has been described using an article having no sub-tank, but the present invention is also applicable to a processing tank having a sub-tank attached thereto.
Applications are possible as well. Further, the warning at the time of detecting the abnormal state is not limited to the one displayed on the display terminal, and another type of warning method using sound, light, or the like may be used. Further, as a method of preventing the photosensitive material such as the film 1 from entering, the insertion of the photosensitive material is sealed, or the conveying device is stopped.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a photographic processing apparatus according to the present invention.

FIG. 2 is a schematic view of a processing tank for a developer.

FIG. 3 is a flowchart showing a process of abnormality detection according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a process of abnormality detection according to another embodiment of the present invention.

[Explanation of symbols]

 11 Processing Tank for Developing Solution 22 Pump for Processing Solution 25 Water Supply Pump 26 Liquid Level Sensor 29 Pump for Discharge 30 Control Unit

Claims (7)

[Claims] 1. A processing liquid replenishing means for replenishing a processing liquid to a processing tank, a processing liquid discharging means for forcibly discharging the processing liquid from the processing tank, and a processing liquid level of the processing liquid in the processing tank. What is claimed is: 1. A photographic processing apparatus comprising a liquid level fluctuation detecting means for detecting a change, wherein a processing liquid replenished in said processing tank by said processing liquid replenishing means and discharged from said processing tank by said processing liquid discharging means. The processing liquid replenishing means and the processing liquid discharging means are controlled so that the amounts of the processing liquids are the same. The processing liquid replenishing means outputs the processing liquid replenishment means and outputs the processing liquid and outputs the processing liquid. A first signal corresponding to the liquid level of the processing tank before the discharging of the processing liquid by the means, and a second signal corresponding to the liquid level of the processing tank after the replenishment and the discharging are performed. Based on the processing solution replenishing means and the Photographic developing apparatus comprising the abnormality detecting means for detecting at least one anomaly management solution discharge means. 2. The photographic development processing apparatus according to claim 1, wherein said abnormality detecting means outputs an abnormality warning signal when a difference between said first signal and said second signal exceeds a predetermined range. 3. The abnormality detecting means detects a change in the liquid level of the processing liquid by comparing the first signal and the second signal within a predetermined time before and after the replenishment and the discharge are performed. The photographic development processing apparatus according to claim 1 or 2, wherein 4. The abnormality detecting means, in place of the first signal, a reference liquid level signal corresponding to a reference liquid level,
2. An abnormality in at least one of the processing liquid replenishing unit and the processing liquid discharging unit is detected by detecting a change in the liquid level of the processing liquid based on the second signal.
Or the photographic processing apparatus according to 2. 5. The photographic processing apparatus according to claim 4, wherein said processing tank is provided with a water refilling means, and a liquid level obtained by rehydrating the water is set as the reference liquid level. 6. A water replenishing means for replenishing the processing tank with water, a processing liquid replenishing means for replenishing the processing tank with a processing liquid, and a processing liquid discharge for forcibly discharging the processing liquid from the processing tank. Means, and a photographic processing apparatus comprising a liquid level detection means for detecting a liquid level position of the processing liquid in the processing tank, wherein the processing liquid replenishing means replenishes the processing tank with the amount of the processing liquid and The processing liquid replenishing means and the processing liquid discharging means are controlled so that the amount of the processing liquid discharged from the processing tank by the processing liquid discharging means is equal, and the liquid level is adjusted to compensate for the loss of water due to evaporation. When the difference between the water replenishment amount supplied by the water replenishment means until the reference liquid level is reached and the reference water replenishment amount corresponding to the expected water loss is equal to or greater than a certain amount, the treatment liquid replenishment means and At least one of the processing liquid discharging means Photographic developing apparatus comprising the abnormality detecting means for detecting a normal. 7. The photographic processing apparatus according to claim 6, wherein the reference water replenishment amount is determined based on at least one of temperature, humidity, and a water replenishment interval.