JPS63228402A - Magnetic head and production of magnetic head - Google Patents

Abstract

PURPOSE:To eliminate adhesion of a ferromagnetic metal and ferromagnetic oxide and to omit grinding to control the track width of the ferromagnetic metal. CONSTITUTION:Plural holes 11a are bored to the ferromagnetic oxide 11 and glass 11b is molded in the plural holes 11a. A groove 11d for controlling the track width of half the track width TW is worked to a joint surface 11c and the ferromagnetic metal 12 is deposited by a sputtering method, etc., in the groove 11d. Since the film is stuck to the surface of the oxide in such a manner, there is no adhesion of the ferromagnetic metal 12 and the ferromagnetic oxide 11 and the grinding for controlling the track width of the ferromagnetic metal 12 is omitted.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention eliminates the adhesion between the ferromagnetic metal and the ferromagnetic oxide by depositing the ferromagnetic metal on the ferromagnetic oxide. The present invention relates to a magnetic head that can narrow the track width at low cost by simplifying polishing for regulating the track width of metal, and a method for manufacturing the magnetic head.

[Conventional technology]

As a magnetic head in which a ferromagnetic metal thin film is sandwiched between ferromagnetic oxides and a method for manufacturing this magnetic head, a method as shown in FIG. 3 is conventionally known. A magnetic gap 2b is formed on the bonding surface 1C of the first ferromagnetic oxide 1, which has an L-shaped longitudinal section and has a winding groove 1a formed on the upper surface and a glass 1b welded thereto (see (A)). (See (C)) 9 Polish the ferromagnetic metal 2 to the required track width TW.
(see (D)), and a second ferromagnetic oxide 3 (see (E)) with a rod-shaped vertical cross section, on which a winding groove 3a is machined on the upper surface and a glass 6b is welded. (see (F)) and polish the non-bonding surface 1d of the first ferromagnetic oxide 1 (see (G)) 9. Winding grooves 1a, 2a, 3
a, a first ferromagnetic oxide 1, a ferromagnetic metal 2. Second
A winding 4 is attached to a ferromagnetic oxide 6 ((H
)reference).

[Problem that the invention seeks to solve]

In this prior art, a ferromagnetic metal 2 is bonded to a first ferromagnetic oxide 1, and a second ferromagnetic oxide 6 is bonded to a ferromagnetic metal 9, but 9, the bonding is difficult and the yield is poor. Further, since the track width TW is regulated by polishing the ferromagnetic metal 2, if the track width TW becomes narrow, the track width TW will be distorted. Therefore, there are problems in that it is expensive and the track width TW cannot be narrowed.

[Means for solving problems]

Means for solving the above problems will be explained below using FIG. 1 corresponding to the embodiment. This invention relates to a magnetic head having a structure in which a ferromagnetic metal 12 is sandwiched between a ferromagnetic oxide 11, and a magnetic head P and a ferromagnetic head in which the ferromagnetic metal 12 is adhered to the ferromagnetic oxide 11. After drilling a plurality of holes 11a in the ferromagnetic oxide 11 and molding glass 11b into the plurality of holes 11a.

A track width regulating groove 11d is machined on the bonding surface 11c, a ferromagnetic metal 12 is coated on the track width regulating groove 11d, and the bonding surface 11c and the bonding surface 11e without the track width regulating groove 11d are processed. After processing the lamination groove 11f, 1
A plurality of ferromagnetic oxides 11 are stacked with their bonding surfaces 11c formed with track width regulating grooves 11a facing each other, and glass 13 is molded and welded in the stacking grooves 11f, and then the stacking direction is firstly stacked. A block 14 is formed by cutting the block 14, and a winding groove 14c and a reinforcing groove 14a are formed on the glass exposed surface 14b of the block 14, and a magnetic gap 15 is formed.

Next, the block 14 and the block 16 on which the reinforcing groove 16a has been processed are butted together via the magnetic gap 15,
A method for manufacturing a magnetic head by molding and welding glass 17 into the reinforcing grooves 14a and 16a, slicing it into nine pieces, polishing the tape running surface 18, and installing a winding 19 to manufacture the magnetic head, and 1. Ferromagnetism. After drilling a plurality of holes 11a in the oxide 11 and molding glass 11b into the plurality of holes 11a, a trunk width regulating groove 11d is formed on the joint surface 11c, and a ferromagnetic material is formed in the track width regulating groove 11a. After the metal 12 is deposited and a lamination groove 11f is formed on the bonding surface 11c and the bonding surface 11e where the track width regulating groove 11a is not formed, the 9 ferromagnetic oxide 11 is applied to the track width regulating groove 11.
A plurality of bonding surfaces 11c on which the grooves d have been processed and bonding surfaces 11e on which the track width regulating grooves 11d have not been formed face each other.

They are laminated, glass 13 is molded and welded in the lamination groove 11f, and then cut in the lamination direction to form a block 14.
A winding groove 14c and a reinforcing groove 14a are formed on the glass exposed surface 14b of the block 14, and a magnetic gap 15 is formed. Glass 17 was molded and welded into the reinforcing grooves 14a and 16a, and sliced into nine pieces.

The present invention relates to a method of manufacturing a magnetic head in which the tape running surface 18 is polished and a winding 19 is attached to manufacture the magnetic head.

[Effect]

In this structure, 3 ferromagnetic metals 12
There is no adhesion between and the ferromagnetic oxide 11.

Polishing for regulating the track width of the ferromagnetic metal 12 can be simplified.

〔Example〕

FIG. 1 is a diagram showing an embodiment of a magnetic head and a method of manufacturing the magnetic head according to the present invention. In FIG. 1, 11f'i ferromagnetic oxide.

12 is a ferromagnetic metal. A ferromagnetic metal 12 is deposited on a ferromagnetic oxide 11 (see (I)).

To explain the manufacturing method of this magnetic head, first, a plurality of holes 11a are bored in a ferromagnetic oxide 11,
Glass 11b is molded onto 1a (see (A)).

A track width regulating groove 11d of half the track width TW is formed on the bonding surface 11c (see (B)), and a ferromagnetic metal 12 is deposited on the track width regulating groove 11d by sputtering or the like (( See C). A magnetic head sandwiching ferromagnetic metal 9 and ferromagnetic oxide 11 with ferromagnetic metal 9 and ferromagnetic oxide 11 can be manufactured with high yield by applying a film to the surface of the object instead of using adhesive to join solid objects.The track width TW is the track width. Since the regulation can be performed by processing the regulation groove 11d and the polishing of the ferromagnetic metal 12 for regulation can be simplified, the track width TW will not be distorted even if the track width TW becomes narrow.

Next, a lamination groove 11f is formed on the bonding surface 11c and the bonding surface 11e on which the track width regulating groove 11d is not formed (see (D)). A plurality of glass 13 are laminated with the bonded surfaces 11c facing each other, and the glass 13 is molded and welded in the lamination groove 11'' (see <g)).By joining the bonded surfaces 11c, ferromagnetic The width of the metal 12 is equal to the track width TW.

Next, blocks 14 and 16 are formed by cutting in the stacking direction (indicated by the dashed line), and the glass exposed surface 14 of the block 14 is cut into blocks 14 and 16.
A winding groove 14c and a reinforcing groove 14a are machined on b, and a magnetic gap 15 is formed (see (F)), and a reinforcing groove 16a is machined on the glass exposed surface 16b of the block 16 (see (G)). . The magnetic gap 15 is connected to the block 16
It may be formed on the glass exposed surface 16b.

Next, the block 14 and the block 16 on which only the reinforcing grooves 16a have been processed are butted together via the magnetic gap 15 to form the reinforcing grooves 14a.

Glass 17 is molded and welded to 16a, and then sliced in the direction perpendicular to the magnetic gap 15 (as shown by the dashed line) or at a certain angle (see (H)).

Next, the tape running surface 18 is polished and the winding 19 is attached to complete the magnetic head (<I).

(See (J)).

In the above embodiment, 2 of the track width TW is provided on the bonding surface 11c.
1/1 track width regulating groove 11. In addition to machining 2 of the track width T-W in the track width regulating groove 11d,
The ferromagnetic metal 12 is coated with a thickness of 1/2, and the bonding surface 11c is
By joining them together, the width of the ferromagnetic metal 12 is changed to the track width T
However, as shown in FIG. 2, a track width regulating groove 11d equal to the track width TW is formed on the joint surface 11c (see (B)), and a track width regulating groove 1
A ferromagnetic metal 12 is deposited on 1a with a thickness equal to the track width TW (see (C)).

The width of the ferromagnetic metal 120 may be made into the track width TW by joining the bonding surfaces 11c and 11e (see (E)).
. In the case of FIG. 2, there is no contact between 9 and the ferromagnetic metal 12 (see FIGS. 1 and 2 (I)).

Good yield (see Figures 1 and 2 (H)).

〔Effect of the invention〕

As explained above, the present invention relates to a magnetic head in which 9 ferromagnetic metals are sandwiched between ferromagnetic oxides, in which 9 ferromagnetic metals are coated on ferromagnetic oxides. 1. After drilling multiple holes in the ferromagnetic oxide and molding glass into the multiple holes, a track width regulating groove is formed on the joint surface, and a ferromagnetic metal is placed in the track width regulating groove. After depositing the ferromagnetic oxide and forming a lamination groove on the bonding surface and the bonding surface where the track width regulating groove has not been processed, the ferromagnetic oxide is bonded between the bonding surfaces where the trunk width regulating groove has been processed. Alternatively, a plurality of them are stacked with the bonding surface on which the track width regulating groove is machined and the bonding surface on which the track width regulating groove is not machined facing each other.

Glass is molded and welded into the lamination groove, first cut in the lamination direction to form a block, and winding grooves and reinforcing grooves are machined on the glass exposed surface of the block, and a magnetic gap is formed. 9. Next, the block and the block having the reinforcing grooves are butted together through the magnetic gap,
The present invention relates to a method of manufacturing a magnetic head, in which glass is molded and welded into the reinforcing groove, sliced into nine pieces, the tape running surface is polished, and windings are attached to manufacture the magnetic head. Therefore, there is no adhesion between the ferromagnetic metal 0 and the ferromagnetic oxide, and polishing for controlling the track width of the ferromagnetic metal 1 can be simplified. Therefore, according to the present invention, it is possible to provide an inexpensive device with a narrow track width.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the magnetic head and method for manufacturing the magnetic head according to the present invention, and FIG. 2 shows another embodiment of the magnetic head and method for manufacturing the magnetic head according to the invention. The figure shown in FIG. 3 is a diagram showing the prior art. 11...Ferromagnetic oxide, 12...Ferromagnetic metal. 16...Glass, 15...Magnetic gap (D) Tw (G) Figure 3 (E) (F)

Claims (1)

[Claims] 1. A magnetic head in which a ferromagnetic metal is sandwiched between ferromagnetic oxides, characterized in that the ferromagnetic metal is adhered to the ferromagnetic oxide. 2. Ferromagnetic head After drilling multiple holes in the oxide and molding glass into the multiple holes, track width regulating grooves are machined on the joint surface, and ferromagnetic metal is coated on the track width regulating grooves. , after forming lamination grooves on the bonding surface and the bonding surface on which the track width regulating grooves have not been processed, the ferromagnetic oxide is made to face the bonding surfaces on which the track width regulating grooves have been processed. A plurality of blocks are laminated, glass is molded and welded into the lamination grooves, and then cut in the lamination direction to form a block, and winding grooves and reinforcing grooves are machined on the exposed glass surface of the block. At the same time, a magnetic gap is formed, then the block and a block with reinforcing grooves are butted together via the magnetic gap, glass is molded and welded to the reinforcing grooves, and then sliced, Manufacturing method 3 of a magnetic head, in which a magnetic head is manufactured by polishing the tape running surface and attaching a winding, after drilling a plurality of holes in a ferromagnetic oxide and molding glass into the holes. , a track width regulating groove is machined on the bonding surface, a ferromagnetic metal is coated on the track width regulating groove, and a lamination groove is formed on the bonding surface and the bonding surface where the track width regulating groove is not processed. After processing, a plurality of the ferromagnetic oxides are laminated with the bonding surface on which the track width regulating groove has been processed and the bonding surface on which the track width regulating groove has not been processed to face each other, and Glass is molded and welded into the grooves, then cut in the stacking direction to form blocks.
Winding grooves and reinforcing grooves are machined on the glass exposed surface of the block, and a magnetic gap is formed, and then the block and the block with the reinforcing grooves are butted together via the magnetic gap. A magnetic head manufacturing method that involves molding and welding glass into reinforcing grooves, then slicing, polishing the tape running surface, and attaching windings to manufacture the magnetic head.