SU636667A1 - Magnetic head - Google Patents

Description

one

. The invention relates to the field of instrumentation, namely, to the technique of magnetic recording, and can be used in the design of magnetic heads.

Magnetic heads are known in which, in order to increase wear resistance, coatings made of ceramics, tungsten oxide or other wear-resistant materials are applied to the working surface. However, the known measures to increase wear resistance are ineffective and require considerable complication of the process.

Of the known designs of magnetic heads, the head is the closest to the invention in terms of technical drying; it contains two C-shaped half-cores with a working gap and a winding located in the internal cavity formed by half-cores 2.

. The disadvantage of this design is the short service life of the magnetic head, due to the wear of the working surface.

The aim of the invention is to reduce the wear of the magnetic head.

This goal is achieved by the fact that in a well-known head, containing two half-cores. C-shaped with a working clearance and

The obmotku located in the inner cavity formed by the half-cores, the half-cores have the shape of ring washers, and the working gap is made ringed on the outside.

FIG. 1 shows the described magnetic head, a general view; in fig. 2 is one of the options for contacting the magnetic head with a recording medium.

The magnetic head (Fig. 1) consists of two washer-shaped half-cores 1, mounted on the axis of the turn (not shown), an annular gasket 2, installed between the end surfaces of the half-cores 1 and forming a circular working gap, and windings 3, times placed in the inner cavity of the half-cores 1. A recording medium 4 to the magnetic head is pressed by means of a rotating roller 5 (Fig. 2).

Magnetic head works as follows.

Claims (2)

The winding 3 of the head through the sliding contacts (not shown in the figures) provides the recording and biasing signals for analog recording or only the recording signal for digital recording. As a result, a variable magnetic flux is induced in the magnetic core composed of half-hearts, and an edge transverse magnetic field is formed in the annular working gap, which acts on the recording medium 4 pressed by the roller 5. Information is recorded when the working surface of the magnetic head rotates with a linear CKOpocTbKi equal to the linear velocity of movement of the record carrier 4. The rotation of the magnetic head is performed using the roller 5. The magnetic head with an annular working gap is made and rotated it can be replaced when recording and reproducing the Slip friction information on rolling friction of the recording medium 4: magnetic head and, thus, the mutual wear of the contacting mem- . The magnetic head is advantageously used for recording and reproducing magnetic marks in order to quickly find the necessary information, while recording and reproducing are performed during the process of rewinding the recording medium. Recording with a transverse magnetic field eliminates the occurrence of transient noise in recording information recorded with a longitudinal magnetic field. Magnetic head containing two C-shaped half-cores with a working gap and a winding located in the internal cavity formed by the half-cores, characterized in that, in order to reduce wear on the magnetic head, half-hearts and the shape of ring washers and working gap made ring.m on the outer side of the magnetic head. Sources of information taken in the stump. Mania during examination: 1. US patent number 3665436,. cl. 340-174 1 F, 1972. 2. Authors certificate of USSR Ho 287125, cl. G 11 B 5/12, 1969. ig.2