JPS60115938A - Controller for development drying temperature of automatic developing machine - Google Patents

Abstract

PURPOSE:To perform the control under a microcomputer, and to improve the precision of temperature control, and to facilitate handling by comparing set temperature with the value of actual temperature in digital value, and performing digital control over development and drying temperatures and also displaying a measured temperature digitally. CONSTITUTION:When a development temperature setting switch or drying temperature setting switch is operated, a set value is inputted to the input port 24 of the microcomputer 14. The microcomputer 14 inputs actual temperature signals from thermistors 13 arranged in a developer tank 9, fixing solution tank 10, washing tank 1, and drying device 12 through a temperature digital converting means A. The actual temperatures are compared with set temperatures and the developing tank 9, fixing tank 10, washing tank 11, and drying device 12 are controlled through an output port 25 that the differences become zero. The measured temperature is displayed digitally on a segment display device through the temperature digital converting means A. Consequently, the precision of the temperature control is improved and the handling is facilitated.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention sets and controls developing and drying temperatures using digital values.
The present invention relates to a device for controlling the developing dryer temperature FIjJ of an automatic developing machine.

(Prior art) Automatic developing machines that automatically develop, fix, wash, and dry include
Temperature control device for film developing solution, fixing solution and cleaning solution,
Some devices include development processing means of a temperature control device such as a drying device, and operation display means that shows the operating state 7u3 of these development processing means. The temperature and drying temperature of this developer and fixer are set at predetermined temperatures, and if these temperatures are not set properly or the temperature of the developer or fixer changes due to film processing, This adversely affects the quality of development. For this reason, a mechanism is provided to appropriately set, control, and display developing and drying temperatures, and these temperatures are managed so as to be maintained appropriately.

By the way, the conventional temperature a-horn control is separated from the ni control of the automatic processor, and the temperature is set independently using an analog control means, and the actual temperature is controlled to the set value. However, the accuracy of the resistors and capacitors constituting the analog control means has a certain limit, and the resistance value and capacitance J1: of these resistors and capacitors may change depending on the temperature. Furthermore, since the temperature is set using a volume, there is a large margin of error, and since the temperature is displayed using an analog system, the temperature reading may not be accurate.

(Objective of the Invention) This invention was made against the background of the above circumstances, and by using digital values for setting, controlling, and displaying the developing and drying temperatures, control by a microcomputer is possible, and the accuracy of the temperature control system is improved. It is an object of the present invention to provide a developing/drying temperature control device for an automatic developing machine which is improved and easy to handle.

(Structure of the Invention) In order to achieve the above-mentioned object, the present invention includes a temperature setting means for setting controlled developing and drying temperatures using digital values;
It is characterized by comprising a digital control means for controlling the developing and drying temperatures by comparing the set temperature and the actual temperature in digital values, and a segment display means for displaying the measured temperature in digital values.

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

The automatic developing machine is equipped with a housing 1 that closes off external light.The front side of this housing 1 has a supply table 2 for supplying undeveloped film 1, and the rear side has a tray 2 from which processed film 3 is taken out. A collecting rack 4 is provided respectively.

Furthermore, between the film intake port 5 located facing the supply table 2 and the film exit port 6 previously installed in the collecting rack 4, that is, inside the housing l, there are a number of feed rollers 7 driven at a constant speed. is provided, thereby forming a meandering film transport path 8. Inside the housing 1, a developer tank 9, a fixer tank 10, a washing tank 11, and a drying device 12 are arranged successively adjacent to each other along the transport path 8 from the front side to the rear side. As a result, the undeveloped film 3 is inserted through the film intake port 6 and is developed until it is taken out from the film take-out lower.

Developer tank 9, fixer tank 1O1, washing tank 11, and drying device 1
2 is provided with a thermistor 13 that detects the respective temperatures. The temperature information is then input to a temperature digital converter stage A that converts it into a digital value, and the temperature digital converter A inputs the temperature information of the developing and drying temperatures to the microcomputer 14 as a digital signal.

In this temperature digital conversion means A, as shown in FIG.
It is connected to the input terminal of 6.

The voltage at one input terminal of the operational amplifier 16 is determined by the variable resistor 17
, a resistor 18 and a volume 19. When the developing or drying temperature changes, thermistor 1 changes accordingly.
3 changes the input terminal to the operational amplifier 16. As a result, the operational amplifier 16 outputs a voltage corresponding to the developing or drying temperature to the A/D converter 20.

The minimum processing voltage of this A/D converter 20 is OV,
The maximum is the V REF voltage, and the temperature control range is set within this minimum and maximum range. For example, at the developing temperature,
0°C~50'C! This setting can be made by adjusting the variable resistor 17 and volume 19.
It is set to be OV at °C and VREV at 50 °C. The A/D converter 20 converts the 111V voltage into an electrical analog value using the thermistor 13 and the operational amplifier 16, converts it into a digital value, and outputs it to the microcomputer 14.

This microcomputer 14+-1: CPU21, R
AM22, ROM23, input port 24, output port 2
It consists of 5. ROM23L (±CPU21
A program is written to control the CPU 21, and according to this program, the CPU 21 performs arithmetic processing while inputting external data required from the input port 24, or by exchanging data with the RAM 22. ,
The correspondingly processed data is outputted to the output port 25, and the operation manual is further outputted from this output port 25.

A main operation display section B is provided on a part of the surface 1iiJ of the housing 1. As shown in FIG. 4, this main operation display section B has various operation display devices Q arranged therein. On this main compartment, in sections 1 to F, a morning stand/standby switch 26, a morning standby setting date switch 27, a timetable switch 28, a drying temperature display switch 29, and a segment at the top. A display 30 and a function display 31 with displays for development, settings, and time are arranged.

The segment display 30 includes the morning standby switch 26, the morning standby setting date switch 27, the time display switch 28, and the drying temperature display switch 2.
By operating manual switching means such as 9, the current time,
C operating states such as morning standby setting time and date, developing temperatures of the developer tank and fixer tank, drying temperature of the drying device, and error display are selectively displayed. The function display 31 displays development, settings, and time in accordance with the display contents displayed on the segment display 30.

A sub-operation display section C is built into the front lower part of the housing I, and is operated by opening the front cover 32.

As shown in FIG. 5, a developing temperature setting switch 33 and a drying temperature setting switch 34 are provided on the sub-panel. The developing temperature setting switch 33 and drying temperature setting switch 34 are digital switches, and the set values are input to the input port 24 of the microcomputer 14, and the temperature of the developer or fixer, or the drying temperature becomes the set value.
controlled by sea urchins.

Next, the operation of this embodiment will be explained.

When the developing temperature setting switch 33 or the drying temperature setting switch 34 is operated, the temperature is input to the microcomputer 14. The actual temperature is input to the microcomputer 14 via the temperature digital conversion means A by thermistors 13 disposed in the developer tank 9, the fixer tank 101, the washing tank 11, and the drying device 12, respectively.

This actual temperature and the set temperature are compared, and a device (not shown) provided in the developer tank 9, fixer tank 10, washing tank 11, and drying device 12 via the output port 25 so that the actual temperature becomes the set temperature. Activate and control the operating device. This comparison between the actual temperature and the set temperature is performed using digital values to ensure temperature control.

Then, on the segment display 30 of the main operation display section B, the digital temperature information read into the microcomputer 14 via the temperature digital conversion means A is displayed as it is, so that the actual temperature can be read accurately.

(Effects of the Invention) As described above, the present invention includes a temperature setting means for setting the controlled developing and drying temperatures using digital values, and a temperature setting means for setting the controlled developing and drying temperatures using digital values, and controlling the developing and drying temperatures by comparing the set temperature and the actual temperature using digital values. Since it is equipped with a digital control means to display the measured temperature in digital values, and a segment display means to display the measured temperature in digital values, the developing and drying temperatures can be set and measured in digital values, and this temperature information can be processed by a microcomputer. The temperature control accuracy is improved, and the handling is simple. Furthermore, temperature setting and display are done using digital values, which improves operational precision and provides accurate readings.

[Brief explanation of drawings]

Figure 1 is a perspective view of an automatic processor to which this invention is applied;
The figure is a schematic diagram of the automatic developing machine, the fIS3 diagram is a circuit diagram of the temperature digital conversion means, and Figure 4 is a front view of the main operation display section.
FIG. 5 is a top view of the sub-operation display section. A...Temperature digital conversion means B...Main operation display section C...Sub operation display section 1
3... Thermistor 16... Operational amplifier 20...
A/D converter 26...Morning standby switch 27...Morning standby setting date switch 28...Time display switch 29...Drying temperature display switch 30...Segment I display 33...Developing temperature Setting switch 34...Dry/non-temperature setting switch

Claims (1)

[Claims] Automatically develops, fixes, and washes inserted unprocessed film.
1. Development controlled by a drying automatic developing machine,
Temperature it to set drying temperature with digital value! Development and drying of an automatic processor equipped with a digital control means that compares the set temperature and the actual temperature in digital values to control the developing and drying temperatures, and a segment display means that displays the measured temperature in digital values. Temperature control device.