SU373760A1 - GUIDE FOR RECORD MEDIUM? COH, J: ^ - i-5AVi IPAT? VISH-T? (NG; E "11 ^ n | BIBLIS / 'T1KD! - Google Patents

Description

one

The invention relates to a magnetic recording technique and can be applied in magnetic recording apparatus.

Record carrier guides are known, comprising a base and a high-frequency oscillator, in which the recording medium passes through a corundum tray.

The disadvantage of such devices is the high frictional forces during the sliding of the recording medium along the corundum guide and, consequently, the low efficiency.

To reduce friction losses in the proposed device, a fixed guide is attached to the base through a piezoceramic element that is connected to a high-frequency generator.

The drawing shows the described device.

The recording / recording medium 2 is attached to the base 3 via a polarized piezoceramic element 4, the terminals 5 of which are connected to the high-frequency generator 6.

An alternating high-frequency electric voltage is supplied from the generator 6 to the electrodes of the piezoceramic element 4. The direction of the spontaneous polarization of the piezoceramic element 4 is oriented per2

pendicularly its plane. When alternating voltage is applied to the electrodes of the element 4, periodic deformations of the piezoceramic element in the direction of spontaneous polarization are excited on the basis of the inverse piezoelectric effect.

The cause of the deformation of the piezoceramic element with the frequency of the applied voltage begins to vibrate and the guide wire of the record carrier. When the latter vibrates, forces appear that oppose the force of the normal pressure of the recording medium 2 to the guide 1. The magnitude of the vibrating forces of the recording carrier is controlled by the voltage of the generator 6 supplied to the electrodes of the piezoceramic element 4 so that it is smaller than force normal pressure wire recording media 2.

In order to eliminate the undesirable influence of the vibrations of the guide wire record carrier 1 on the reproduction quality, the frequency of the signal of the generator 6 is chosen outside

frequency range of the recorded signals on the magnetic recording apparatus.

The described guide can be applied to recording media of various shapes, for example, tapes, wires. With

this its working surface may have

form corresponding to the form of the recording medium.

Subject invention

A guide for the recording medium, comprising a base and a high-frequency generator, characterized in that, in order to reduce friction losses, a guide is attached to the base through a piezoceramic element connected to the high-frequency generator.