JPS61257848A - Sensitive material feeding device - Google Patents

Abstract

PURPOSE:To control feeding of sensitive material when some abnormality is detected, by furnishing sensors to detect the operation condition of an automatic developing device. CONSTITUTION:Floating switches FSD, FSF, or FSW is ON, when the developing solution, fixing solution, or washing water reaches a specific amount respectively. Output of each sensor is input to CPU11 of an automatic developing device, and when any abnormal value is found in the abnormality detection, a signal of abnormality is generated. The signal of abnormality is input through a photocoupler 12 to CPU13 for feeding control, where a motor stop signal is produced to stop the feeding motor M2. When no abnormality is detected for all detecting items, the signal of abnormality is not output, and the feeding motor M2 operates normally to feed the sensitive material to the automatic developing device, and the process is continued.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a photosensitive material that automatically feeds photosensitive material to an automatic developing device that develops sheet-like photosensitive materials such as X-ray film and plate-making film. The present invention relates to a material feeding device, and more particularly to a photosensitive material feeding device that has been improved to be able to control the feeding of photosensitive material when an abnormality occurs in an automatic developing device.

[Prior Art] The development of sheet-like photosensitive materials (hereinafter sometimes simply referred to as photosensitive materials) such as X-ray film and plate-making film is usually carried out by an automatic developing device. A processing tank filled with a processing agent or water necessary for the development processing of photosensitive materials to be processed such as development, fixing, and water washing, a drying section that dries the processed photosensitive material by blowing warm air on it, and the processing tank and dryer. A conveying means is provided for conveying the photosensitive material through the photosensitive material insertion slot, and the photosensitive material inserted through the photosensitive material insertion port passes through each processing tank in sequence, is developed, and is dried in the drying section.
It is designed to be discharged outside the machine as a finished product.

In the past, photosensitive materials were manually inserted one by one into an automatic developing device in a darkroom, but in recent years, in order to improve work efficiency and save labor, a light-shielded photosensitive material feeding device has been connected to the automatic developing device, allowing further processing for photographing. Image recording devices such as devices or the feeling of being exposed,
BACKGROUND ART A method has become common in which the photosensitive material is automatically and directly fed to an automatic developing device by being connected to an exposed photosensitive material supply unit such as a storage device for storing the photosensitive materials in bulk.

FIG. 3 shows an example of the above-mentioned apparatus, in which 1 is an automatic developing device, 2 is a photosensitive material feeding device, and 3 is a supply section for exposed photosensitive material. The exposed photosensitive material is fed by a pair of feeding rollers 4, 41 in the photosensitive material feeding device 2, and inserted into the insertion opening of the automatic developing device. Reference numeral 5 denotes a motor that drives the pair of feeding rollers 4 and 41.

The inserted photosensitive material is conveyed by the conveying means in the automatic developing device 1, and the chain ll1l? It passes through the developing tank 6, the fixing tank 7, and the washing tank 8 through the path indicated by , and is further dried through the drying section 9 and discharged outside the machine.

[Problems to be Solved by the Invention] As is well known, the photographic properties of light-sensitive materials are significantly affected by the conditions of the developing process. Processing agent,
Correct results cannot be obtained unless all various processing conditions, such as the amount and temperature of washing water, and the temperature of drying air, are maintained at the required conditions.

In the case of manual work, the status of the automatic developing device is checked by internal inspection and meter monitoring, etc., but when the photosensitive material is continuously fed automatically using a photosensitive material feeding device, It is difficult to inspect each time, and the labor-saving effect, which is one of the objectives of automation, cannot be achieved. Furthermore, if an abnormality occurs in the processing conditions during automatic feeding, a large number of photosensitive materials will be processed under abnormal conditions, posing the risk of causing a large loss of important image information recorded on the photosensitive materials.

Currently, as a countermeasure to this problem, there is a system in which, if an abnormality occurs in the automatic developing device and the 7S-Z is disconnected, the feeding device also stops.

However, the 7Aze disconnects only when there is a major failure such as an electrical short circuit in the automatic developing device, and cannot be used to deal with everyday abnormalities such as insufficient processing liquid volume or temperature abnormalities. This often resulted in loss of photosensitive material.

SUMMARY OF THE INVENTION An object of the present invention is to provide a photosensitive material feeding device having a function of preventing loss of photosensitive material in the event that an abnormality occurs in an automatic developing device.

[Means for Solving the Problems] The above object is to detect the operating state of the automatic developing device in a photosensitive material feeding device that is connected to an automatic developing device and feeds a sheet of photosensitive material to the automatic developing device. This has been achieved by a photosensitive material feeding device having a sensor for controlling the photosensitive material and a means for controlling feeding of the photosensitive material from the photosensitive material feeding device to the automatic developing device based on the output of the sensor.

The abnormality items of the automatic developing device that are detected in the present invention include, for example, the amount of various processing solutions such as developer, fixer, and washing water in the processing tank, the temperature of each processing solution, especially the developer, drying temperature, conveyance speed, etc. Although it is preferable to include elements that affect the finishing characteristics of the material, the present invention is not limited to these, and it is also possible to detect abnormalities in various other conditions as necessary.

In order to detect abnormalities in the processing conditions as described above, sensors such as float switches, liquid level sensors such as continuity detection electrodes, temperature sensors such as thermistors, speed sensors such as tacho generators, etc. are automatically installed according to the items to be detected. It is sufficient to arrange the sensor at each necessary location in the developing device, input the signals from each sensor to the OPH, and compare the signals with preset reference values for each item.

0Ptlr is programmed to output an abnormal signal when the input signal is outside the reference value range.

When an abnormal signal is output, the feeding device is stopped to prevent the photosensitive material from entering the automatic developing device in an abnormal state. When feeding the photosensitive material, when the photosensitive material approaches the insertion slot of the automatic developing device, the abnormality detection operation described above is performed to check for any abnormality, and if an abnormality is detected, the feeding is immediately stopped. If no abnormality is detected, it is desirable to continue feeding at least until the insertion of the photosensitive material is completed. If transportation is stopped while the photosensitive material is being inserted, there is a risk that the photosensitive material will stop partially immersed in the processing solution or that tension may occur, resulting in fatal damage.

It is also preferable to display the results of the abnormality detection on an operation panel or the like so that the location, degree, etc. of the abnormality can be known.

[Example] The present invention will be specifically explained below by showing an example of a photosensitive material feeding device according to the present invention.

In this example, the abnormality detection items are the amounts of developer, fixer, and washing water that have the greatest influence on the characteristics of the photosensitive material, developer temperature, drying temperature, and photosensitive material transport speed, and the sensor is a float switch. F8:o, F8F
, FSw, thermistor TD, TDR.

(See Fig. 3 above), and the conveyance speed signal is taken from an automatic developing device drive motor M and a control tacho generator G, which are not shown in the figure (see Fig. 1).
. FIG. 1 is a block diagram of the detection and control system of this device.

Float switch FED, F'S? , F8w are turned ON when the developer, fixer, and washing water reach predetermined amounts, respectively. The output of each sensor is the OF of the automatic developing device.
The abnormality is detected by inputting it to υ11 according to the procedure shown in the flowchart of FIG. 2, and if an abnormal value is recognized, an abnormality signal is generated.

The abnormal signal passes through the photocoupler 12 to 0PU1 for feeding control.
3, and O'P ff l 3 issues a motor stop signal to stop the feed motor M.

'OF, Ull and OFυ13 may be connected directly, but in order to prevent malfunctions due to noise, it is preferable to use a 7-oto coupler as in this device or use a relay or the like to connect them.

If no abnormality is detected for any of the detection items, no abnormality signal is output and the feed motor M is turned off.

rotates normally and feeds the photosensitive material to the automatic developing device to continue processing.

[Effects of the Invention] In the apparatus of the present invention, since the photosensitive material is fed only when it is confirmed that the processing conditions in the automatic developing device are in the predetermined state, processing can be continued without noticing inappropriate conditions. This can prevent major accidents such as the loss of a large number of recorded images and photosensitive materials. In addition, in the above embodiment, development,
This is the case of an automatic developing device equipped with three processing tanks, fixing and washing, but the present invention is also applicable to an automatic developing device for color photosensitive materials having a multi-stage processing tank, or a simple saturation device with fewer processing tanks. Needless to say, the present invention can also be applied to a combined photosensitive material feeding device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the control circuit of the photosensitive material feeding device according to the present invention, and FIG. 2 is a flow diagram showing the control procedure of the device.
FIG. 3 is a side view showing an outline of the device. FED...Float switch (developer tank) FSy...
Float switch (fixing tank) FSW...Float switch (washing tank) TD...Thermistor (developing tank) TDR...Thermistor (drying section M,...automatic developing device drive motor G1...Ml) Tacho generator M...Photosensitive material feeding device drive motor...Automatic developing device 2...Photosensitive material feeding device 4.41...Feeding roller Applicant: Konishiroku Photo Industry Co., Ltd. Figure 2

Claims (1)

[Claims] A photosensitive material feeding device that is connected to an automatic developing device and feeds a sheet of photosensitive material to the automatic developing device includes a sensor that detects the operating state of the automatic developing device, and a sensor that feeds the photosensitive material based on the output of the sensor. A photosensitive material feeding device comprising means for controlling feeding of photosensitive material from the device to the automatic developing device.