SU698045A1 - Magnetic head - Google Patents

Description

(54) MAGNETIC HEAD

one

The invention relates to instrumentation, in particular to a magnetic head, which can be used in virtually any magnetic recording apparatus.

A known magnetic head comprising a body, half-cores, a winding connected electrically with an ultrasonic vibration generator, and a gasket placed between the pole pieces to form the width of the working gap portion. When designing such a head, it was not envisaged precisely in it that measures preventing to some extent the disturbances of the moving magnetic tape, including the transverse oscillations of this tape.

Closest to the proposed magnetic head, comprising a housing, divided in height into two parts, between which there is a damper, an ultrasonic frequency generator ti mounted on tori of a piezo-transform transducer (GS), electrically connected to this generator.

However, this head does not allow sufficiently small parasitic transverse oscillations of the sections of the moving magnetic tape that are in contact with the working surface of the head by increasing the amplitude of the useful oscillations of this surface, which, in turn, is connected with the design features of the head itself.

The circuit of the invention is the reduction of parasitic transverse oscillations of sections of a moving magnetic tape in contact with the working surface of the head, by increasing the amplitude of the useful oscillations of this surface.

This goal is achieved by the fact that between each PCB and the corresponding end of the body there is an intermediate element having the shape of a truncated pyramid, the larger base of which is in direct contact with the PCB, and the smaller one - with the end face of the magnetic head body.

FIG. 1 shows the proposed magnetic head, front view; in fig. 2 - the same, side view.

The housing 1 of the magnetic head consists of two parts, between which the damper 2 is located. At the ends of the housing are installed the IP 3,

electrically connected to the ultrasonic frequency generator 4, and between each PCB and the end of the body is placed an intermediate element 5, which in the particular case plays the role of a grader and has a truncated pyramid shape.

The device works as follows.

When applied to the PCB from the ultrasound frequency voltage generator, the head begins to oscillate in a regular manner. As a result, a traveling deformation wave is formed in parts of the body, propagating in the direction of the damper, which allows the adherence of the magnetic tape (not shown) to the working surface of the head. The greater the amplitude of oscillation that occurs in the area of the working surface of the head, the higher (up to a certain limit) the force that the moving magnetic tape adheres to the head.

The reduction of parasitic oscillations makes it possible with greater certainty to record household and special information, which allows not only to save the magnetic tape and fix the time of its operation, but also to save the working hours of the operators.

which reduces labor costs when creating service or artistic records.

Claims (1)

Invention Formula A magnetic head comprising a housing divided in height into two parts, between which there is a damper, an ultrasonic frequency generator and piezo transducers mounted at the ends of the housing electrically connected to this geyator, which is designed to reduce parasitic transverse oscillations of the moving magnetic strip in contact with the working surface of the head, by increasing the amplitude of the useful oscillations of this surface, between each piezoelectric transducer and the corresponding end of the core whisker mounted intermediate member having a shape of a truncated pyramid, the larger base of which is in direct contact with the piezoelectric transducer, and the minimal -: mappggnoy housing with an end face of the head.