SU1337666A1 - Device for recording on electrosensitive medium - Google Patents

Abstract

The invention relates to the field of recording information. The purpose of the invention is to increase the reliability of the device. On the falling edge of the control signal, the one-shot 26 in the control unit 15 produces a pulse Record that opens the keys 3, and through the open circuit AND 14 a switch 10 of the recording voltage, which connects through the circuit OR 12 another input of the source 9 to the counter electrode 7. Pulse duration and the magnitude of the recording voltage provides for the flow through the keys 3 of such a quantity of electricity that under the corresponding electrodes 1 there is a darkening of the carrier 6. In the device the accumulation of the carrier between the electrodes 1 and the counter-current is eliminated 7.2 ektrodom yl, (E9 A oo of: G5 05 FIG /

Description

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The invention relates to recording IF forms on an electrosensitive carrier and can be used as recording devices, for example, in geophysical well surveys for plotting well logs.

The aim of the invention is to improve the reliability of the device.

Figure 1 shows the functional diagram of the device; figure 2 - timing charts of his work.

The device for recording on the electrosensitive carrier contains electrodes 1 connected through resistors 2 to the outputs of the write keys 3, and through decoupling diodes 4 to the switch with memory 5 and electrically connected through electrosensitive carrier 6 with a counter electrode 7 kinematically connected with a tape drive mechanism 8, a power source 9, connected to one and the other outputs through the recording voltage keys 10 and controlling the resistance of the carrier 11, respectively, and then through the OR 12 circuit to the counter electrode 7, the threshold speed device 13, which is connected via its output to one of the outputs of the AND circuit 14 and to the tape drive mechanism 8, and the input is connected to the switch output with memory 5, the control unit 15, one output of which is connected to another switch input with memory 5 and to the control input of the control resistor key 11. The other output of the control unit 15 is connected to the control input of the write keys 3 and another input of the AND circuit 14, and the input is connected to the output of the tape drive mechanism 8. The output of the AND circuit 14 is connected to the control input of the key voltage recording 10.

The information input and the third output of the control unit 15 are connected to the source of information 16.

As a threshold element 13, a two-threshold comparator can be used, consisting of comparators 17 and 18, AND 19 circuits, and sources of reference voltages 20 and 21.

A switch with memory 5 can be built on the basis of an analog switch circuit with memory. In the proposed device, the switch with memory contains two keys on the field-effect transistors VT1 and VT2, which stores a constant 3

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capacitor C, VDI key control circuits, VD2, and R3, input voltage divider R1, R2, and operational amplifiers 22 and 23.

The control unit 15 contains a receive register 24 with a storage capacity of one line of recording information, connected by its outputs to the inputs of the recording keys, and the input to the information source 16, as well as three serially connected one-oscillator 25, 26 and 27.

The control key of the carrier resistance 11 and the write voltage key 10 can be realized on transistors, the operating voltage and current of which correspond to the required values.

The circuit implementation of nodes 5, 10, 11, 13 and 15 can be different and performed on a different element base.

Figure 2 presents the timing diagram of the operation of the recording device on an electrically sensitive carrier.

SI is a synchronizing pulse generated by a tape-testing mechanism after moving the carrier to a distance equal to the step of the information lines.

The control is a signal produced by a single vibrator 25 and determines the connection time of the power source 9 to control the resistance of the carrier 6.

Record - a signal generated by the one-shot 26 and allowing the recording of information on the carrier 7.

Ready - a signal produced by the one-shot 27 and informing the source of information 16 about the readiness to receive data of the next line of the image.

The recording device for electrosensitive media works as follows.

The carrier 6 is pulled between the electrodes 1 and the counter electrode 7 by means of a tape drive mechanism. When the carrier 6 is moved for a distance equal to the spacing of the information recording lines, the tape drive mechanism 8 generates a synchronization pulse C, which is fed to the control unit 15 to generate control signals. signals: Control, Record, 55 Ready (figure 2).

The recorded data from the source of information 16 is fed to the register 24 of the control unit 15 and from there to the key 30

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3. A control command is generated in the control unit 15, which switches on the memory switch 5, opens the keys VT1 and VT2, and connects the output of the power source 9 through the resistance control key 11 via the OR circuit 12 to the counter electrode 7. The magnitude of the current and the time of switching on the resistance control key of the carrier 11 are selected so that the amount of electricity flowing through the circuit: the counter electrode 7, the carrier 6, electrodes 1, decoupling diodes 4, key VT1 and divider R1, R2 with memory 5, would about below the threshold of sensitivity of the carrier 6 and did not cause it to darken under the electrodes 1. In this circuit, during the operation, the resistance of the carrier 6 can significantly change, when a direct contact of one or several electrodes with the opposite electrode occurs, it becomes 0. the carrier 6 under the electrodes I, the resistance of the counter electrode 7 - the electrodes 1 tends to infinity. When the carrier of the cut-off carrier 6 stops under the electrodes 1, the recording zone, for example, in electrochemical paper, dries up and the resistance of the transition of the counter-electrode 7 — the electrodes 1 also increase dramatically. Therefore, the voltage on the input circuit of the switch with memory 5 varies inversely with the change in resistance of the junction counter electrode 7 — electrodes 1, i.e. with zero resistance, the transition is maximized; in other cases, it tends to zero. The output voltage of the co-switch with memory 5 in the Enabled state is equal to the input one. In the off state, it remains as it was at the moment it was turned on, until the next control command arrived. This voltage is fed to the input of the threshold device 13, which records whether the amplitude of the input signal is between the set values or outside its range. One threshold corresponds to the output signal of the switch 5, fixed by direct contact of the electrodes 1C with the counter electrode 7, and the other corresponds to the resistance of the double layer of the carrier 6, since such resistance will be at mini10

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the accumulation of the carrier under the electrodes. If the amplitude of the signal at the input of the threshold device 13 lies within this range, then its output signal enables the operation of the tape drive mechanism and opens the AND 14 circuit.

On the falling edge of the control signal, the one-shot 26 in the control unit 15 generates a pulse Record, which opens the keys 3 and through the open circuit AND 14 - a recording voltage key 10, which connects through the OR 12 circuit another input of the power source 9 to the counter electrode 7. Through the carrier 6 , electrodes I, resistors 2, as well as through the keys opened according to the information set on the inputs, write current flows. The duration of the pulse and the magnitude of the recording voltage provide for the flow through the public keys of such a quantity of electricity that

25, darkening of the carrier 6 occurs under the respective electrodes 1. Thus, one line of the image is recorded.

At the end of the write pulse in the control unit 15, a Ready signal is formed, according to which data is transmitted from the source of information 16 to register 24 to record the next image line and with the arrival of the next SI, the whole cycle repeats.

35 If due to the listed reasons (media breakage, stopping or accumulation under the electrodes) an emergency situation occurs, the signal amplitude at the input of the threshold device 13 is lower or higher than the response thresholds. In this case, the output signal of the threshold device 13 prohibits the operation of the tape mechanism 8, includes an indication in it and

 closes the AND 14 circuit, preventing the recording voltage from being connected.

Thus, in the proposed device, the accumulation of the carrier between the electrodes and the counter electrode is eliminated, the device is operated for a long time with a torn carrier, as well as damage to the electrodes and nodes of the tape mechanism.

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Claims (1)

Invention Formula A device for recording on an electrosensitive medium containing 5 1 consequently, the connected control unit, recording keys, resistors, electrodes, as well as a counter electrode, kinetic associated with a tape mechanism, decoupling diodes, the anodes of which are connected to the electrodes, the power source connected to the key of the recording tape, and the threshold A device, characterized in that, in order to increase the reliable operation of the device, a memory switch, an impedance control switch, an AND circuit and an OR circuit connected to the counter electrode are inserted into it, and the first memory switch input w is connected to the cathodes of decoupling diodes, the second input - to the input of a control key accompanied Compiled by N. Lankov Editor N. Gorvat Tehred L.Oleinik Proofreader M.Sharoschi 4118/36 Circulation 693 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. A / 5 Production and printing company, Uzhgorod, st. Project, 4 37666 media and with the second output of the control unit, the output of the switch is connected to the input of the threshold device, the output of which is connected to the input of the tape drive mechanism and to the first input of the And circuit, the second input of which is connected to the control input of the recording keys and to the third output 1Q of the control unit, the control input of which is connected to a tape drive mechanism, the output of the AND circuit is connected to the second input of the write voltage key, the output of which is connected to the first input of the OR circuit, the second output of the power supply is connected to the second input the house of the control key of the resistance of the carrier, the output of which is connected to the second input of the OR circuit. fpt / e.Z