JPH0520625A - Magnetic head device - Google Patents

Abstract

PURPOSE:To provide the magnetic head device which eliminates the dust pickup on a magnetic head and can prevent the sticking by the dust pickup within a magnetic tape cassette. CONSTITUTION:The dust is absorbed in grooves 5a when the tape travels in a direction A. The contact pressure of the groove 5a parts with the tape is higher than in the case of the absence of the grooves and, therefore, the sticking of the dust in the part where the tape 4 and the magnetic head 1 are in contact decreases.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head device for recording and reproducing information on a magnetic recording medium.

[0002]

2. Description of the Related Art Conventionally, a magnetic recording / reproducing element (hereinafter referred to as a magnetic head) has two gutter grooves 2 on the R surface of a sliding surface of a tape which is a magnetic recording medium, as shown in FIG. A groove is provided. In particular, the installation of this groove is unavoidable in an apparatus in which environmental cleaning is strictly required.

[0003]

However, in the above-described conventional example, dust adheres to the magnetic recording medium when the magnetic recording medium begins to separate from the magnetic head (the contact pressure between the head and the tape weakens), and the following problems occur. was there. (1) The adhered dust is carried to the vicinity of the magnetic gap by the magnetic recording medium that slides on the magnetic recording medium, and when it is run for a long time, it is deposited and covers the magnetic gap, and the gap between the magnetic head and the tape. Pacing occurs and electrical characteristics deteriorate. (2) The dust attached to the magnetic head attaches to the magnetic recording medium, and the tapes, which are magnetic recording mediums, for example, are fixed to each other in the cassette half, and a tape break occurs.

The present invention has been made to solve the above problems, and eliminates dust adhesion to a magnetic head, and
An object of the present invention is to provide a magnetic head device capable of preventing adhesion of dust on a magnetic tape in a cassette.

[0005]

In order to achieve the above object, the magnetic head device of the present invention has a plurality of grooves formed on the surface where the contact pressure between the magnetic head and the recording medium is reduced.

[0006]

According to the present invention, a groove substantially parallel to at least one gap is provided at a place where the contact between the tape and the head is weakened, and the groove absorbs dust on the tape surface. It is the one.

[0007]

1 is a plan view and a side sectional view of a magnetic head according to an embodiment of the present invention, in which 1 is a magnetic head for electromagnetic conversion and 2 is a resin exposed on a conventional sliding surface. To prevent the tape from coming into contact with the tape, 3a and 3b are tape guides for running the tape as a recording medium at a fixed position on the magnetic head, 4 is a tape, and 5a and 5b are to absorb dust on the tape surface. A plurality of grooves 6 for indicating the position of the gap of the magnetic head.

In FIG. 1, when the tape runs in the direction A, dust is absorbed in the groove 5a, and the contact pressure of the groove 5a with the tape is higher than that without the groove. There is less dust on the part where it is attached.

In the embodiment shown in FIG. 1, the grooves 5a and 5b are shown substantially parallel to the gap 6, but the grooves may form an arbitrary angle with the gap 6 and the cross groove (knurl). Groove).

[0010]

As described above, according to the present invention, by providing at least one groove in a portion where the contact pressure of the magnetic head with the tape is weak, the maintenance-free period of the head is extended and recording is performed. It is also possible to prevent the tape from breaking due to the adhesion of dust to the medium.

[Brief description of drawings]

FIG. 1 is a plan view and a side sectional view of a magnetic head according to an embodiment of the present invention.

2A and 2B are a plan view and a side sectional view showing a schematic configuration of a conventional magnetic head device.

[Explanation of symbols]

 1 magnetic head main body 2 gutter groove 3 tape guide 4 tape 5a, 5b groove 6 gap position

Claims (1)

1. A magnetic head device in which a recording medium slides on an upper surface, wherein a plurality of grooves are formed on a surface where a contact pressure between the magnetic head and the recording medium decreases. Magnetic head device.