JPH01173307A - Manufacture of magnetic head - Google Patents

Abstract

PURPOSE:To accurately integrate a core for recording and reproducing and a core for erasing in a thin thickness by sputtering a nonmagnetic material and forming an adhering layer in the facing surface of the core for recording and reproducing and the core for erasing. CONSTITUTION:In the facing surface of an I-type magnetic block 1 for recording and reproducing and an I-type magnetic block 2 for erasing, a nonmagnetic materials 3 is sputtered and the adhering layer is formed. These magnetic blocks 1 and 2 are adhered and an I-type magnetic block 4 is formed. Then, a C-type magnetic block 5 to form an interval for recording and reproducing and a C-type magnetic block 6 to form an interval for erasing are adhered to this block 4. As the result, for the adhesion of the core 1 for recording and reproducing and the core 2 for erasing, the accurate intearation can be executed since they are adhered by a thin film to be formed with the sputtering.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a magnetic head, which is used in magnetic disk drives and the like, in which a recording/reproducing hard disk core and an erasing hard disk core are integrated.

Conventional technology In recent years, floppy disk type magnetic recording/reproducing devices (IF,
FDD (FDD) is widely used for backing up personal computers, etc., and efforts are being made to increase its recording capacity. With the increase in capacity, high trunk density and
There is a need for compact, high-performance magnetism that supports linear recording density.

Hereinafter, an example of a method for manufacturing a magnetic head used in the conventional PDD described above will be described with reference to the drawings.

FIG. 7, FIG. 8, FIG. 9, and FIG. 10 show the manufacturing method and structure of a conventional FDD hand. In the i7 diagram, 11 is a rad core for recording and reproduction, 12 is a rad core for erasing, 10 is a recording head core 11 and an erasing head core 1.
The manufacturing process of an FDD head configured as 0 or more, which is a spacer made of a non-magnetic material sandwiched between 2 and 2, will be explained with reference to FIG. In FIG. 8, l is one core of the recording/reproducing head, and a glass 8 is molded into a groove that regulates the recording trunk width W. Reference numeral 5 denotes a C core of a recording/reproducing head, which is provided with recording track regulation and a winding groove 7 for recording/reproducing. A recording/reproducing head core 11 (Fig. 7) is inserted between the core 1 and the C core 5 through a gap material (such as Si02, gap length G).
form. The erasing head core is also the same; 2 is the summer core of the erasing head, and a glass 9 for regulating the erasing track width W2 is molded thereon. 6 is the C core of the erase head,
Erasing track regulation and erasing winding grooves 7' are provided.

this! An eraser rad core 12 (FIG. 7) is formed between the core 2 and the C core 6 via a gap material (eg, SiO□, gap length G2). Further, IO is a spacer made of a non-magnetic material (glass, ceramic, etc.). As shown in FIG. 7, this spacer 10 is bonded (using resin or the like) between the recording/reproducing head core 11 and the erasing head core 12 to form an FDD head in which the recording/reproducing head and the erasing head are integrated. FIG. 9 is a side view of a conventional FDD head. In FIG. 9, G is the gap length for recording and reproduction;
G2 indicates the gap length for erasing, and To indicates the thickness of a spacer made of a non-magnetic material between recording/reproducing and erasing. 10th
The figure is a diagram of a sliding surface of a conventional FDD head. 1st theta
In the figure, Wl represents the recording/reproducing track width, W2 represents the erasing trunk width, and Lo represents the distance between the recording/reproducing gap and the erasing gap.

Examples of conventional methods for manufacturing FDD heads as described above include the method disclosed in Japanese Patent Application Laid-Open No. 59-213014.

Problems to be Solved by the Invention However, in the above manufacturing method, since the spacer lO between the recording/reproducing head core and the erasing head core is a thin plate of non-magnetic material (for example, 5i02 or ceramic), its thickness is The To was about 100 μm. In addition, while the distance L' between the recording/reproducing gap and the erasing gap of conventional FDD heads was about 600 μm, in the future, this distance @L'' will become smaller in heads compatible with higher density. For this reason, the conventional method of gluing thin plate spacers with resin etc. had the problem that it was difficult to further reduce the thickness of the spacer. .

In view of the above-mentioned problems, the present invention aims at miniaturization by accurately bonding the recording/reproducing core and the erasing core with a thinner thickness in order to reduce the recording/reproducing and erasing gap distances associated with higher density. The present invention provides a method of manufacturing a magnetic head in which a recording/reproducing head and an erasing head are integrated.

Means for Solving the Problems In order to solve the above problems, the method for manufacturing a magnetic head of the present invention involves adhering non-magnetic materials to the opposing surfaces of the recording/reproducing head core and the erasing head core by sputtering or the like. It is equipped with a method of forming it as a layer.

According to the method described above, the distance between the recording/reproducing core and the erasing core is formed by a sputtered thin film of a non-magnetic material. In response to the shortening of the magnetic field, it is possible to form a compact magnetic head in which a recording/reproducing core and an erasing core are integrally bonded together with high accuracy.

EXAMPLE Hereinafter, a method of manufacturing a magnetic head according to an example of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a process of integrating a recording/reproducing core and an erasing core in a method of manufacturing a magnetic head according to an embodiment of the present invention. In Figure 1,
4 is an I-type magnetic block in which a non-magnetic layer is formed by sputtering on the opposing surfaces of a recording/reproducing core half-closed and an erasing core half-closed and adhered thereto. 5 is a C-type magnetic block for forming a recording/reproducing gap, and 6 is a C-type magnetic block for forming an erasing gap.

A method of manufacturing the magnetic head constructed as described above will be explained with reference to FIGS. 2, 3, 4, 5, and 6. First, FIG. 2 shows the process of bonding two summer-type magnetic blocks, in which numeral 1 is a summer-type magnetic block for recording and reproduction, and 2 is a summer-type magnetic block for erasing. Non-magnetic material 3 is placed on the opposing surfaces of these two summer magnetic blocks.
(For example, S+02> is formed by a sputtering method to form an adhesive layer. Figure 3 shows the adhesive layer. In Figure 3, the thickness of the adhesive layer T made of the non-magnetic material 3 is:
It can be controlled by the thickness of the sputtered nonmagnetic material. For example, in this embodiment, the thickness is around 20 μm. Next, both sides of this integrated summer magnetic block are ground to provide a recording/reproducing gap on one side and an erasing gap on the other side (Figure 3 R/W side and E side). At this time, the thickness L of the integrated summer-shaped magnetic block can be controlled. This place is
This is the recording/reproducing and erasing gap distance, which is 25 in this example.
It was set to 0 μm. Next, FIG. 4 shows the process of bonding the C-shaped magnetic block 5 for forming a recording/reproducing gap and the C-shaped magnetic block for forming an erasing gap to the integrated summer-shaped magnetic block 4.

In FIG. 4, a recording/reproducing C block 5 has a glass 8 molded in a groove for regulating the recording track width, and further has a recording/reproducing winding groove 7 formed in advance. The same goes for the erasing head, and in the erasing C block 6, a glass 9 is molded into a groove that regulates the erasing trunk width, and an erasing winding i1$7' is provided. FIG. 5 is a side view of these C-shaped blocks when forming voids. In FIG. 5, G1 indicates the gap length for recording and reproduction, and G2 indicates the gap length for erasing. The nonmagnetic material for forming these gaps is, for example, SiO□. Further, T indicates an adhesive layer between the recording/reproducing core and the erasing core. Here, the melting temperature of the nonmagnetic material forming the adhesive layer T must be higher than the melting temperature of the nonmagnetic material forming the recording/reproducing gap G1 and the erasing gap G2.

Moreover, FIG. 6 is a diagram of the sliding surface of the head formed as described above. In FIG. 6, L indicates the distance between recording/reproducing and erasing gaps, Wl indicates the recording/reproducing track width, and W2 indicates the erasing trunk width.

As described above, according to this embodiment, the recording/reproducing core and the erasing core are joined by thinning the non-magnetic material using a sputtering method and then adhering them, resulting in a thinner and more precise joining. can.

Furthermore, by forming summer-shaped magnetic blocks for recording/reproducing and erasing, the recording/reproducing and erasing gap distances can be managed with greater precision than ever before in the grinding process.

Effects of the Invention As described above, the present invention has the following advantages: By forming a non-magnetic material as an adhesive layer on the opposing surfaces of the recording/reproducing RAD core and the erasing RAD core by sputtering or the like,
This makes it possible to join the recording/reproducing head core to the erasing head core thinner and with greater precision.

As described above, the manufacturing method of the magnetic hemlock of the present invention can be applied even when the recording/reproducing head core and the erasing head core are bonded together with a thin adhesive layer, and the recording/reproducing and erasing gap lengths are shortened. Therefore, the effect is great.

[Brief explanation of the drawing]

FIG. 1 is a head assembly process diagram of a method for manufacturing a magnetic head according to an embodiment of the present invention, and FIGS. 2 and 3 are diagrams. Figure 4 is a process diagram that explains the assembly process diagram in Figure 1 in detail;
FIG. 5 is a side view of a head manufactured by a magnetic head manufacturing method according to an embodiment of the present invention, FIG. 6 is a front view of FIG. 5 viewed from the sliding surface of the head, and FIG. 7 is a conventional magnetic head manufacturing method. A head assembly diagram of the head manufacturing method, FIG. 8 is a process diagram explaining in detail the assembly process diagram of FIG. 7, FIG. 9 is a side view of the head manufactured by the conventional magnetic head manufacturing method, and FIG. 9 is a front view of FIG. 9 viewed from the sliding surface of the head. 3...Nonmagnetic layer formed by sputtering method, 10...Nonmagnetic spacer, 1...■-type core for recording and reproduction, 2...Erasure I-type core for 5
...C-type core for recording and reproduction, 6...C-type core for erasing. Figure 1 Figure 2 Figure 4 Figure 5 Figure 6!

Claims (3)

[Claims] (1) A magnetic head in which a recording/reproducing gap and an erasing gap are separated by an arbitrary interval in the time axis direction, and a nonmagnetic material is deposited on the opposing surfaces of two I-shaped magnetic blocks by vapor deposition or sputtering. a step of forming a pair of I-type magnetic blocks as an adhesive layer, and forming a C-type magnetic block on both sides of the pair of I-type magnetic blocks, one for forming a recording/reproduction gap on the other. 1. A method of manufacturing a magnetic head, comprising the step of adhering C-shaped magnetic blocks for forming an erasing gap. (2) The method for manufacturing a magnetic head according to claim (1), wherein the thickness of the adhesive layer of the pair of I-type magnetic blocks is sufficiently larger than the recording/reproducing and erasing gaps. . (3) The non-magnetic material for forming the pair of I-type magnetic blocks has a higher melting temperature than the non-magnetic material for forming the recording/reproducing and erasing gaps. 1) A method for manufacturing a magnetic head as described in section 1).