SU1700365A1 - Recording device - Google Patents

Abstract

The invention relates to instrumentation, can be used to record information on an electrically sensitive carrier and improves the quality of recording by allowing the adjustment of the pressing force of writing electrodes depending on the speed of movement of the information carrier and the change in diameter of the common electrode. When the diameter of Valmcch 2 decreases, the voltage at the output of the second normalizing amplifier 15 and the adder 13 changes so that the corresponding threshold element 16 and the electromagnet 17 are activated, which provides the calculated value of the writing electrode A. A. Il.

Description

The invention relates to instrumentation, can be used to record information on an electrically sensitive carrier.

The purpose of the invention is to improve the quality of the recording by providing the ability to control the clamping force of the writing electrodes depending on the speed of movement of the information carrier and the change in the diameter of the common electrode.

Nz the drawing shows the functional diagram of the device.

The recording device contains a carrier speed converter 1 to force the writing electrodes to a metal roller 2, the output of which is connected to an elastic non-conductive knife 3 mounted above the writing electrodes (PE) 4, which are connected to a metal roller 2 through an electrically sensitive carrier 5 mechanism, the knife 3 is equipped with a mechanism 6 translation it in the off position. The power supply 7 is connected via keys 8 to the PE 4, the control unit 9 is connected to the keys 8, the speed switching unit 10 of the electrosensitive carrier 5 through the main input of the movement speed converter 1 is clamped to the inputs of a digital-to-analog converter (D / A) 11, the output of which through the first normalizing amplifier 12 is connected to the first input of the adder 13, to the other inputs of which are connected the outputs of the setting device 14 of the pressing amplifier PE 4 and the second normalizing amplifier 15, whose input is an additional input The transducer 1 of the movement speed due to clamping, the output of the adder 13 is connected via threshold circuits 16 to the windings of the electromagnets 17. The device also contains a sensor 18 for the diameter of the metal roller 2 (common electrode).

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The device works as follows

When power is applied, if the transport speed Vi is selected, the roller 2 is turned on, the outputs Udi and Uv- appear at the outputs of the sensor 18 and DAC 11, which are proportional to the diameter di of the roller 2 and the speed Vi of movement of the carrier 5, respectively. The voltages Udi and Uvi are scaled by the first and second normalizing amplifiers 11 and 15, taking into account the traction characteristics of the electromagnets 17, and are fed to an adder 13, to another input of which voltage UH is applied from setpoint 14, proportional to the nominal value of the pressing force P PE 4, Therefore the output voltage Ui UH + Uvi + Udi of the adder 13 will be proportional to the force Pi Rn + AARu1 + Drsc4, where APdi and DRu1 increase the pressing force proportional to the speed of movement of the carrier 5 and the diameter of the roller 2.

The voltage Ui triggers the threshold element 16.1 and the electromagnet 17.1 and the output of the converter 1 develops a force Pi, acting through the knife on the PE 4. Under the influence of this force, each of the PE 4 is pressed against the roller 2 with the force Pi / n, and the value Pi The paper transport speed and current roller diameter size 2.

When changing the speed of moving paper from Vi to V2, the threshold element 16.1 returns to its original position, the winding of the electromagnet 17.1 de-energizes and the PI force from the knife is removed, the threshold element 16.2 operates and the electromagnet 17.2, the bark of which, through the knife 3, acts on PE 4, presses each of them with an effort R2 / n. At the same time, if the speed V2 is greater, then the pressing force h developed by the electromagnet 17.2 is also greater than the force Pi. developed by an electromagnet 17.1.

When reducing the diameter of the roller 2 from di to d2, the voltage at the output of the second normalizing amplifier 15 and the adder 13 is changed so that the corresponding threshold element 16 and the electromagnet 17 are activated, providing the calculated value of the pressing force PE 4 at the diameter d2.

The number of threshold elements 16 and electromagnets 17 is selected based on the number of discrete values of carrier movement speeds and taking into account the stepwise nature of adjusting the pressing force of PE 4 when roller 2 is worn.

Therefore, at any value of the carrier movement speed, a change in the diameter of the roller 2 by a specified amount leads to a corresponding change in the voltage at the outputs of the second normalizing amplifier 15 and the adder 13 and triggers the corresponding electromagnet 17. As a result, the pressing force of the PE 4 increases as

an increase in the speed of movement of the carrier 5 and a decrease in the diameter of the roller 2, and at a constant value of the speed of movement of the carrier and a decrease in the diameter of the roller 2.

Claims (1)

Invention Formula A recording device containing a speed converter the carrier in the force of pressing the writing ejectrodes, conjugated with an elastic non-conducting knife, the writing electrodes conjugated through an electrosensitive carrier with a metal roller of a common electrode, non-operating position of the elastic non-conducting knife, power source connected via a key block with writing electrodes, control block connected to the control inputs of the key block, and switching speed of the carrier connected to the first input of the speed converter of the carrier in the force of clamping writing electrodes, characterized by that, in order to improve the recording quality due to the possibility of adjusting the clamping force of the writing electrodes depending on the speed of movement of the carrier and changing the diameter of the common electrode, a sensor of the diameter of the metal roller of the common electrode is inserted, the output of which is connected to the auxiliary input of the SPEED converter movement to force pressing writers electrodes, which in turn contains the first and second normalizing amplifiers, the setter of the clamping force, the digital-to-analog converter, the adder, and the threshold elements with windings electromagnets at the outputs, the digital-analog converter, the input of which is the first input of the carrier speed converter to the pressing force of the writing electrodes, is connected via the second normalizing amplifier to the first input of the adder, the first normalizing amplifier whose input is an additional input of the carrier speed converter to the pressing force writing electrodes, soy dinak with the second input of the adder, i pei clamping force, and the output - with inputs the input of which is connected to the output of the task — threshold elements.