JP3334902B2 - Manufacturing method of magnetic head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a magnetic head used in a recording / reproducing apparatus for a flexible disk.

[0002]

2. Description of the Related Art In recent years, magnetic heads for flexible disks have been reduced in size and capacity, and the width of a recording / reproducing core,
The track width of the erasing core is becoming narrower, and the gap between the recording / reproducing core gap and the erasing gap is also becoming very narrow. In a magnetic head having such a configuration,
It is necessary to improve the dimensional accuracy and smoothness of the upper surface of the magnetic head, which is a contact surface between the magnetic head and the medium (magnetic medium), which are important parameters in the magnetic characteristics, and to eliminate pores, and to reduce the cost. Therefore, it is necessary to simplify the structure and improve the productivity.

Hereinafter, a conventional method for manufacturing a magnetic head will be described. As shown in FIG. 2, the magnetic head for a flexible disk includes an A slider 2 made of a nonmagnetic material for reinforcing a read / write erase core 1 in which a magnetic material is joined with a nonmagnetic material at a joint 4, and This is a configuration in which a B slider 3 made of a non-magnetic material for reinforcement is bonded and bonded at a bonding portion 5.

[0004] In the bonding method of laminating and curing the joints 4 and 5 using a resin, as shown in FIGS. 3 and 4,
The thickness dimension “a” of the joint 4 and the thickness “b” of the joint 5 due to the difference in the amount of adhesion of the joining resin 7 do not become uniform, resulting in a change in the adhesive strength and a step difference, as shown in FIG. As shown in FIG. 6, dents 8 are formed on the upper surface of the joining resin 7, and the environmental resistance is further deteriorated. As shown in FIG. 6, the upper surface of the read / write erase core 1 and the upper surface of the A slider 2 For example, a step 9 may occur between the upper surfaces of the B slider 3.

The read / write erase core 1 and A
In the bonding method in which the slider 2 and the B slider 3 are set using the holding jig and then the glass is melted and filled in the joints 4 and 5, as shown in FIGS.
If the thickness c of the joint 4 is equal to the thickness d of the joint 5 as shown in FIGS. And the pores 11 may be generated due to insufficient filling of the glass 10.

[0006]

As described above, in the conventional method, the steps 9 and the dents 8 and the pores 1 generated at the joints 4 and 5 are formed.
No. 1 has a problem that the characteristics are unstable or the output is reduced when touching the medium, and there is a problem that it causes an error due to the occurrence of a demagnetization defect due to the adhesion of foreign matter such as media dust. Was. Further, there is a problem that the outflow portions 10a and 10b of the glass 10 need to be removed.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a method of manufacturing a stable magnetic head which has improved dimensional accuracy, has no steps, dents, or pores at a joint, and has no characteristic deterioration when touching a medium. The aim is to provide a method.

[0008]

In order to achieve this object, a method of manufacturing a magnetic head according to the present invention comprises an A slider and a B slider each having a vapor-deposited glass film formed on a joint surface with a read / write erase core by sputtering. This is a method in which a read / write erase core is sandwiched between sliders, and a vapor-deposited glass film is fused and joined.

[0009]

According to this method, the thickness of the joint is made uniform, and the dimensional accuracy and the smoothness of the upper surface of the joint are improved.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 showing one embodiment of the present invention, the same parts as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

The configuration of the magnetic head is the same as that of the conventional example described with reference to FIG. As shown in FIG.
A vapor-deposited glass film 6 is formed on the joining surface of the slider 2 and the B slider 3 with the read / write erase core 1 by sputtering, and the read / write erase core 1 is deposited on the bonding jig by vapor deposition of the A slider 2 and the B slider 3. The glass film 6 is set so as to be sandwiched between the surfaces, and the temperature is raised in a heating furnace to fuse and bond the vapor-deposited glass film 6.

A large number of A sliders 2 and B sliders 3 can be formed at the same time by sputtering to have a uniform thickness.

As described above, according to the present embodiment, a method of forming the vapor-deposited glass film 6 on the A slider 2 and the B slider 3 and fusing it with the read / write erase core 1 is as follows.
Stabilization of the joint can be prevented, dents due to outflow of glass and insufficient filling can be prevented, dimensional accuracy and smoothness of the upper surface of the joint can be improved, and the deposited glass film 6 can be efficiently formed. can do.

[0015]

As is apparent from the above description of the embodiments, the present invention provides an A slider and a B slider in which vapor-deposited glass films are formed on the joint surfaces with the read / write erase core.
Hold the read / write erase core with the slider,
A method of manufacturing a stable and excellent magnetic head that improves the dimensional accuracy by the method of fusing and bonding the evaporated glass film and that does not cause steps, dents, or pores at the bonding part, and does not deteriorate the characteristics when touching the media. It can be realized.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a state before fusion in a method of manufacturing a magnetic head according to an embodiment of the present invention.

FIG. 2 is an external perspective view of a magnetic head according to the present invention and a conventional example.

FIG. 3 is a schematic front cross-sectional view of a magnetic head when a resin is used for a joint in a conventional magnetic head manufacturing method.

FIG. 4 is a schematic plan view of a main part of FIG. 3;

FIG. 5 is a schematic front cross-sectional view showing a recess at a joint portion of a magnetic head in a conventional method for manufacturing a magnetic head.

FIG. 6 is a schematic front cross-sectional view showing a step at a joining portion of the magnetic head in the method of manufacturing the magnetic head.

FIG. 7 is a schematic plan view showing the outflow portion of the glass of the magnetic head according to another manufacturing method of the magnetic head.

8 is a schematic front sectional view of FIG. 7;

FIG. 9 is a schematic front cross-sectional view showing pores at a joint portion of the magnetic head in another method of manufacturing the magnetic head.

10 is a schematic plan view of a main part of FIG. 9;

[Explanation of symbols]

 2 A slider 3 B slider 6 Evaporated glass film

Claims (1)

(57) [Claims] 1. A magnetic head comprising: a read / write erase core in which a magnetic material is joined by a nonmagnetic material; and two sliders made of a nonmagnetic material joined by sandwiching the read / write erase core. A manufacturing method, wherein a vapor-deposited glass film is formed only on a joint surface of the two sliders with the read / write erase core, and the read / write erase core is sandwiched by the two sliders; A method for manufacturing a magnetic head, comprising: fusing a vapor-deposited glass film to join the two sliders to the read / write erase core.