JPS61153654A - Automatic developing device - Google Patents

Abstract

PURPOSE:To attain efficient development and to discharge a dried and treated film by exhausting gas generated in a machine from a film unloading port by a drying fan. CONSTITUTION:A developing tank 11, a fixing tank 12 and a washing tank 13 are arranged in the horizontal direction and a sheet film inserted from a film insertion board 14 is moved upwards after developing, fixing and washing processes, squeezed by a squeeze roller 15, lifted upwards, and then discharged from a film unloading port 16 through a drying part 17. Cross flow fans 18a, 18b having the carried film width are arranged on the positions opposed to the film surface under a driving part 17 as drying fans, air in the machine is heated by the heater and the film is dried by the temperature and discharged from a film unloading port 16 positioned on the upper part of the device. Thus, the gas generated in the device is moved together with atmosphere without forming an additional exhaust fan and exhausted from the fan unloading port 16 positioned on the upper part of the device on the basis of a funnel effect.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is a method for developing, fixing, washing photographed photosensitive materials such as X-ray film, and discharging them from the apparatus after a drying process. Concerning improvements to automatic developing devices.

[Conventional technology]

During development processing, the processing tank of an automatic developing device, particularly the development/fixing tank, is generally controlled at a set temperature higher than room temperature, so that the processing liquid tends to evaporate and atmospheric gas is generated. These gases contain acetic acid gas, etc., so if these gases are left in the equipment, they may cause rust on metal parts or condensation on the film insertion table at the entrance of the equipment. Precipitates as crystals and damages the film. Further, the liquid condensed in the apparatus falls as water droplets on the film being processed, which adversely affects the processability of the film.

In order to eliminate the adverse effects caused by the gas evaporated from the processing tank accumulating inside the apparatus, it is common practice to provide means for exhausting the gas to the outside of the apparatus by providing an exhaust fan.

On the other hand, in an automatic developing device that has a washing and drying process following the development and fixing process, a drying fan is installed and the film is dried by blowing hot air onto the film surface that has been washed and squeezed to remove water droplets. The dried film is discharged outside the apparatus. Therefore, in an automatic developing device, it is necessary to install a fan motor such as an exhaust fan or a drying fan for the power system used for circulating the processing solution or transporting the photosensitive material.
・It is inevitable that the structure will be complicated and the cost will be high, and that it will take up a lot of space.

Furthermore, automatic developing equipment at parts stores that does not have a built-in drying process does not require a drying fan, but it is necessary to dry the processed film that has been taken out by hanging it separately, making post-processing complicated. 〇 [Problems to be solved by the invention] The present invention has a simple mechanism and configuration for discharging gas, and a drying fan blows hot air onto the film to perform a good development process and dry it. An object of the present invention is to provide an automatic developing device from which a processed film is discharged.

[Means for solving problems]

The present invention aims to achieve the above object.

In the present invention, when a 5K automatic developing apparatus is used, the photosensitive material that has been developed and fixed is dried by a drying fan and discharged from the film outlet, and the gas generated inside the machine by the drying fan is discharged from the film outlet. The present invention provides an automatic developing device characterized by the following features.

〔Example〕

FIG. 1 is a layout diagram showing the first embodiment, in which a developing tank 11, a fixing tank 12, and a washing tank 13 are arranged horizontally, and the sheet film inserted from the film insertion stand 14 is placed in the developing/washing tank. After finishing the fixing and washing process, it moves upward,
After being squeezed by a squeeze roller 15, the film is lifted upward, passes through a drying section 17, and is discharged from a film outlet 16.

In this embodiment, cross-flow fans 18a and 18bit of the width of the film are installed as drying fans at positions facing the film surface below the drying section 17, and heat the air inside the machine by using a heater (not shown). The film is dried with hot air and exhausted from the film outlet 16 located above the apparatus. In this embodiment, the gas generated within the apparatus moves in the direction of the arrow together with the air sucked in from the film insertion table 14 without the need to provide a separate exhaust fan.
Due to the chimney effect, the film is discharged from the film outlet 16 located above.

FIG. 2 is a layout diagram showing the second embodiment. The difference from the first embodiment is that the generated gas and the atmosphere taken in by the drying fan are used as hot air to dry the film from both sides in the drying section 17 through the drying nozzle 28b. This embodiment has the same effect as the first embodiment.

FIG. 3 is a layout diagram showing the third embodiment, in which there is a developing tank 3 at the bottom.
It has a two-stage structure with a fixing seed section 1 and a washing seed section and a drying section on the upper side. The sheet film inserted through the film insertion chalk goes through the developing tank 31 and the fixing tank 32 in the lower stage, undergoes the development and fixing process, is washed in the washing tank in the upper stage, is dried in the drying section, and is discharged from the film outlet. be done.

In this embodiment, a drying fan is installed above the washing tank, and warm air passing through the pipe 381 blows the drying nozzle 3 on both sides of the film F.
From 82 onwards, the spraying dries.

FIG. 4 shows the main parts of the drying section, in which conveyance rollers 341 hold and convey the film F, and partition walls 342 regulate the airflow. Since the drying nozzle 382 is tilted toward the film outlet and blows out hot air, the air flow is discharged from the film outlet side in the direction of the arrow.

Generally, the developer tank 31. The gas generated from the fixing tank 32 is high in humidity and temperature, so it rises and moves toward the water washing 4W33. Since the suction port of the drying fan blade is located near the washing tank, the temperature of the generated gas is higher than the temperature near the washing tank, so it cools down near the washing tank, condenses, and becomes a low-humidity gas that is dried. Provides efficient wind.

The fifth factor shows an example of a dry air blowing system.

The intake pipe 383 of the drying fan is branched, one has an opening 384 on the upper side of the washing tank, and the other has an opening 3 facing outside the device.
85, the intake pipe 38 connected to the opening 384
3 has a valve VA, and a valve V has a valve V in the intake pipe 383 connected to the opening part 385.
Provide B. Also, a temperature/humidity sensor H is installed in the pipe 381.
8. Valve MA.

vB is a commonly used valve such as a solenoid valve or a solenoid, and by opening the valve vB, low-humidity outside air is taken in and low-humidity air is supplied.

Figure 6 is a chart showing the humidity adjustment of the drying air.
The humidity R detected by the temperature/humidity sensor H8 is compared with the humidity R detected by the temperature/humidity sensor H8, and air with lower humidity is supplied, thereby improving drying efficiency.

Fig. 7 is a flowchart in which low-humidity outside air is used only while the film F is being transported. The time from the take-out port to the time it is discharged is set.

〔Effect of the invention〕

The present invention as described above is capable of performing a good developing process similar to that of an automatic developing device equipped with an exhaust fan without using the conventionally used exhaust fan.
The present invention provides an automatic developing device with a simple and compact structure.

[Brief explanation of drawings]

1st. Second. FIG. 3 is a layout diagram showing each embodiment of the present invention. Figure 4 shows the drying section in Figure 3 taken out. Figure 5 shows the ventilation system shown in Figure 3. FIGS. 6 and 7 are flowcharts of the ventilation system. 11, 31...Developing tank 12, 32...Fixing tank 13, 33...Washing tank 14, 35...
・Insertion stand 16, 36...Film outlet is, 28, 38...Drying fan 17, 34
... Drying Department 28b, 382 ... Drying No. Jl Humidity Queen Dimensions Figure 7 vA = Minai Sumochiman Bamboo

Claims (1)

[Claims] In an automatic developing device in which the photosensitive material that has been developed and fixed is dried by a drying fan and discharged from a film outlet, the gas generated inside the machine by the drying fan is discharged from the former film outlet. An automatic developing device featuring: