SU601650A1 - Automatic monitor of tape-guiding paths of film processing machine - Google Patents

Description

The invention relates to film photographic equipment, namely, devices for processing and exhibiting film photographic materials.

Control devices are known that contain a mechanical shield: p, moving along the edge of the film with cut-outs on its control sections, and the contact of the actuator. A variation of this device is the application of magnetic or metallized labels on a film and the use of magnetic or inductive mark sensors. In this case, the synchronization of the actuator is achieved by three passing through it a selected area of film in the path of the film processing machine.

The disadvantage of these devices is the need for manual labeling and the possibility of their damage during the processing and transportation of the film in the film processing machine.

Control devices are known that contain a perforation meter with an indicator, a reset bus and bit outputs connected to one of the INPUT01B comparch controller, the second input of which is connected to the memory register, and the executive mechanism 2.

However, the need to preliminarily manually measure the length of the film from the initial mark to the selected

plot and entering the measured value into the storage periiCTp.

In order to identify the film section in the variable-length tape paths, the proposed device additionally introduced a perforation counter installed at the beginning of the tape path, made with electronic valves at the discharge outputs and with a delay line connected to the memory register and the reset button.

The device also introduced sensors tags connected to w, in1 reset the counters And installed about the indicator | In each counter punch.

The drawing shows the device.

The device consists of counters / perforations with perforation indicators 2, reset bus 3 and discharge outputs 4, comparator 5, memory register 6, performer 0; mechanism 7, electronic valves 8 at discharge outputs 4, delay lines 9, width W selection of film and sensors sensors 11 tags. The drawing also shows a tape path 12 with a film 13.

The device works as follows. When stationary motion of the film 13 in the path 12, the perforations of the film are continuously detected by the indicators 2 and their counting counter.mi / is detected. Because of.

that the first indicator 2 is installed at the beginning of the path 12, and the second indicator 2 - further along the motion of the film 13, the penalties of the first counter / exceed the readings of the second counter / for the number of perforations of the film 13 between them. At the beginning of the path 12, a signal is sent to the bus 10 mark of the section 1plain and opens the valves 8. The counter / register 6 is entered through the valves 8. The same signal goes to the counter reset bus through the delay line .ka 1 and sets it to zero. The signal to the bus 10 of the mark of the film section can be supplied either manually by the operator when passing the required part of the film 13 through the perforation indicator 2, or automatically, for example, when charging into the path 12 of the film-processing mass of the new film.

At 1111M the next motion of the film 13 in 12, the first counter / resumes perforation count from zero, and the second counter / continues counting from the current value. This continues until the second counter / sets a value equal to that entered in register 6. At this moment, both inputs of comparator 5 have the same code values and output a signal that activates the actuator, m 7 and bus 3 reset the second counter / set it to zero. .

Thus, the mechanism 7 is triggered when the content of the second counter / is equal to the content of the first counter / at the moment of selecting the portion of the film of 13, and therefore the selected portion will be identified in (The moment of passage through the mechanism 7.

At the time of actuation of the actuator 7, the readings of the first counter / again (exceed the readings of the second counter. / On the number of perforations of the film 13 enclosed between them, i.e. the device is ready for further work.

In order to automatically set the difference between the readings of the two counters /, corresponding to the length of the film 13 between them, when the film machine is initially started, a film 13 is passed through its path 12, having a single method, for example, in the form of a notch, magnetic or metallized sticker and During the passage of the marker, first through the sensor 11, installed at the beginning of the path 12, an electrical signal is generated that 1produced through the reset bus 3 to zero the first counter /, which after passing the mark resumed m account perforations. Upon subsequent movement of the film 13, the mark reaches the second sensor 11 installed by the actuator 7. The sensor’s output through the reset bus 5 sets the second counter 1 to zero, which, after passing the mark, also resumes the counting of perforations. Thus, after passing through the mark of both sensors, the readings of the first counter to / exceed the readings of the second counter 1 by the number of perforations contained in the film between them 13.

, Pr.i ustanova in tr. Act 12 of the film-processing machine of several executive mechanisms 7, the device turns on in a cascade between. Per pair with a pair of indicators 2 perforations, which in this case work

immediately to two counters. 1 (previous and next), and on the bus 10 marks the portion of the film of the subsequent device the signal is fed from the output of the comparator 5 of the previous device.

The application of the proposed device will increase the level of automation of the processing departments of the film on film studios and film copying enterprises by automating the control of optical measurement operations.

characteristics of the control sections of the film material directly in the technological flow, automation of cutting and removal of finished products at the exit of the film-processing machine.

Fore; Mule Invention

1. An automatic control device of tape paths of film-processing machines, containing a counting of perforations with an indi- cator, a reset zone and discharge outputs connected to one of the inputs of a com.parator, the second input of which is connected to a memory register, and an executive mechanism, characterized in that, in order to identify a section of film in tape paths of variable length, a second perforation counter is inserted into the device, made with electronic valves

at the bit outputs and the delay line, connected respectively to the memory register and the reset bus and installed at the beginning of the tape path.

2. The device on n. .1, for example, the fact that the sensors are inserted into it, connected to the meter reset tires and installed near the indicators of each perforation counter.

Sources of information taken into account in the examination:

1. US Patent No. 3674365, cl. 355-40, 1972.

2. US patent number 3881820, cl. 355-41, II975.