JPH0361183B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic developing machine that automatically performs development, fixing, and drying of an unprocessed film under the control of a microcomputer control system.

[Prior Art] In recent automatic processors, film development, fixing, and drying are automatically performed using a microcomputer control system. The microcomputer controls the transport means for transporting the film, the temperature control means for the film developer and fixer, the drying means, etc. Although abnormalities in these are monitored, the microcomputer itself Abnormalities are not monitored.

[Problems to be Solved by the Invention] By the way, if a momentary power outage occurs during film processing, a microcomputer may experience a timing shift, cause an abnormality, and run out of control. As a result, even the memory and input/output ports that make up the microcomputer become abnormal.
There are problems such as display system malfunctions, drive system malfunctions, and abnormal development and drying temperatures.

This invention was made against the background of the above circumstances, and it provides an automatic developing machine that detects abnormalities in the microcomputer, resets the control system to prevent program runaway due to operational abnormalities, and is capable of processing film during processing. is intended to provide.

[Means for Solving the Problems] In order to solve the above problems, the present invention controls a transport means for transporting the film, a temperature control means, and a drying means using a microcomputer control system to transport an unprocessed film. In an automatic processor that performs development, fixing, and drying processing, the microcomputer control system includes a signal generating means that generates a signal every program cycle, and a signal generating means that generates a signal that is not detected within a predetermined time. and system monitoring means for outputting a reset signal for resetting at least an output port of the microcomputer control system, and for outputting a drive signal for driving the conveyance means controlled by the microcomputer control system. It is characterized by

[Operation] In the present invention, a microcomputer control system controls the film transport means, temperature control means, and drying means to transport the unprocessed film and perform development, fixing, and drying processes. When the signal generating means that generates a signal every program cycle of this microcomputer control system does not detect the generated signal within a predetermined time, the system monitoring means outputs a reset signal that resets at least the output port of the microcomputer control system. This prevents the program from running out of control due to abnormal operation, and also outputs a drive signal to drive the transport means controlled by the microcomputer control system to transport and process the film being processed.

[Example] Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

The automatic processor is equipped with a housing 1 that blocks external light, and the front side of the housing 1 has a supply table 2 for supplying undeveloped film, and the rear side has a collection rack 4 from which processed films 3 are taken out. Each is provided.

An operation display section 5 is provided on the front upper part of the housing 1.
is provided, and this operation display section 5 is provided with necessary operation switches and operation indicators.

Further, between the film intake port 6 located facing the supply stage 2 and the film take-out port 7 attached to the collection rack 4, that is, inside the housing 1, there is a large number of conveying means driven at a constant speed. A feeding roller 8 is disposed, thereby forming a meandering film conveying path 9. Inside the housing 1, a developer tank 10, a fixer tank 11, a washing tank 12, and a drying device 13 which are drying means are arranged in order from the front side to the rear side along the conveyance path 9. ing. This developer tank 10, fixer tank 11,
Sensors 14 and 1 are installed in the washing tank 12 and the drying device 13.
5, 16, and 17 are provided, and each temperature information is input to the microcomputer 18. The undeveloped film 3 is inserted through the film intake port 6 and is developed before being taken out from the film exit port 7.

A film width detecting means 19 is provided at the film intake port 6 and detects the film 3 and inputs the information to the microcomputer 18. Further, a temperature control device 28 serving as a temperature control means is disposed inside the housing 1, and the temperature control device 28, which is a temperature control means, is arranged to adjust the temperature of the developer tank 1 based on the output from the microcomputer 18.
0. The developing temperature of the fixing liquid tank 11 and the washing tank 12 and the drying temperature of the drying device 13 are controlled.

The microcomputer 18 includes a CPU 20, a volatile memory RAM 21, a nonvolatile memory ROM 22, an input port 23, and an output port 24.
It consists of A program to control the CPU 20 is written in the ROM 22.
0 takes in the required external data from the input port 23 according to this program, or
It performs arithmetic processing while exchanging data with the RAM 21, and outputs the processed data to the output port 24 as necessary. A drive device 26 for driving the feed roller 8 and the like, a drying device 13, and the like are operated from the output port 24 via a drive circuit 25.

The microcomputer 18 is equipped with a system monitoring means 27. The CPU 20 of the microcomputer 18 has a signal generating means for generating a pulse signal every time the program completes one cycle. This pulse signal is input to the system monitoring means 27, and the system monitoring means 27 monitors whether or not the next pulse signal is input at the set time. For example, if the program goes out of control due to an instantaneous power outage and the next pulse signal is not input within a predetermined time, a reset signal and a drive signal are output at the same time. The reset signal is input to the RAM 21, input port 23, and output port 24, and resets them. On the other hand, the drive signal is provided by the drive circuit 25.
As a result, the drive circuit 25 operates to process the film being processed.

Next, the operation of this embodiment will be explained. In the automatic developing machine, a drive device 26, a temperature control device 28, a drying device 13, etc. are driven under program control of a microcomputer 18, and the film is automatically processed. At this time, each time the program goes around
A pulse signal is generated in the CPU 20, and this pulse signal is input to the system monitoring means 27. If the pulse signal is generated every time the program completes one cycle, the system monitoring means 27 will not generate a reset signal or a drive signal. Therefore,
RAM21, input port 23 and output port 24
The drive circuit 25 is operated by a drive signal from the output port 24, and the various drive devices 26, temperature control device 28, drying device 1
The third class is driven.

If the program of the microcomputer 18 goes out of control due to an instantaneous power outage, for example, and a pulse signal from the CPU 20 is not input to the system monitoring means 27 within a predetermined time, a reset signal and a drive signal are simultaneously output. The reset signal is input to the RAM 21, input port 23, and output port 24, and resets them. As a result, the connection between the output port 24 and the drive circuit 25 is cut off, and the drying device 13, the temperature control device 28, etc. operate abnormally, and an abnormal increase in the drying temperature and the developing temperature is prevented. On the other hand, a drive signal is input to this drive circuit 25.
5 operates based on this drive signal to drive the drive device 26. As a result, the microcomputer 18
Even if there is an abnormality, the film being processed will be processed.

[Effects of the Invention] As described above, the present invention detects the signal of the signal generating means that generates the signal every cycle of the program,
When this signal stops, the system monitoring means outputs a reset signal to the microcomputer control system and also outputs a drive signal to drive the conveyance means, so that an abnormality in the microcomputer control system can be detected and reset can be performed. As a result, program runaway is prevented, and an increase in developing temperature and drying temperature due to abnormal operation does not occur, and the conveying means is simply driven by the drive signal, so that the film being processed can be reliably processed.

[Brief explanation of drawings]

The drawing is a schematic diagram of an automatic processor to which the present invention is applied. 20...CPU, 21...RAM, 22...
ROM, 23... input port, 24... output port, 25... drive circuit, 27... system monitoring means.

Claims (1)

[Scope of Claims] 1. An automatic developing machine in which a microcomputer control system controls a film transporting means, a temperature control means, and a drying means to transport an unprocessed film and perform development, fixing, and drying processes. a signal generating means for generating a signal every program cycle of the microcomputer control system; and a signal generating means for resetting at least an output port of the microcomputer control system when the signal generated by the signal generating means is not detected within a predetermined time. An automatic developing machine comprising: system monitoring means for outputting a reset signal and a drive signal for driving the conveyance means controlled by the microcomputer control system.