JPH0246521A - Manufacture of floating type magnetic head - Google Patents

Abstract

PURPOSE:To make the title head suitable for mass production by inserting chips into respective cutting grooves of a slider block where a cutting groove is formed at a prescribed pitch, fixing it and after a matching block is formed, cutting the matching block. CONSTITUTION:A head chip 22 composed of a ferromagnetic oxide material to form an operating gap 18 forms many head chip blocks integrally molded at a prescribed pitch P. Respective head chips 22 of the head chip blocks 23 are inserted and fixed to respective cutting grooves of a slider block 25 to form a cutting groove with the pitch P and after a matching block 27 is formed, the matching block is cut. Thus, by one process, many head chips 22 can be installed at a cutting groove 24 of the slider block 25 and it can be formed suitable for the mass production.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method of manufacturing a floating magnetic head used for a hard disk type recording medium.

(b) Conventional technology In recent years, hard disk drive devices have been increasing their capacity through high-density recording, and compact magnetic disks with disk diameters of 5.25 inches and 3.5 inches have appeared.
It is rapidly becoming popular not only for large-sized computers but also for consumer devices such as personal computers.

Conventionally, the mainstream magnetic heads for hard disk drive devices have been monolithic magnetic heads in which a floating body (1) and a magnetic core (2) are made of ferrite, as shown in FIG. However, when trying to reduce the track width t to 20 km or less in order to achieve high-density recording in a magnetic head with this structure, processing is difficult and there is no side reinforcement for the track portion in the finished product. Therefore, there was a risk that chips or cracks would occur in the track section.

Therefore, in order to solve the above-mentioned drawbacks,
Composite magnetic heads have been proposed as disclosed in Publication No. 1222 (G11B5/60) and the like. This composite type magnetic head has a slider (3) made of non-magnetic ceramic such as calcium titanate having a shape as shown in FIG. ) After inserting the head chip (6) made of ferrite, the 12th head chip (6) is inserted.
As shown in the figure, place the glass piece (7) on top of the head chip (6).
) and filling the glass (8) to bond the slider (3) and head chip (6), and then externally shaping the head chip into a desired shape.
It will be completed in the shape shown in Figure 3.

The above-mentioned composite type magnetic head has a 13th track width even when the track width is 20 m or less.
As shown in the figure, since the working gap (5) is reinforced with glass (8), reliability is high and it is suitable for high-density recording. However, in the case of the above-mentioned magnetic head, since the slider (3) and the slider chip (6) are bonded one by one, there is a drawback that mass production is poor.

(c) Problems to be Solved by the Invention The present invention has been made in view of the drawbacks of the above-mentioned conventional examples.
It is an object of the present invention to provide a method for manufacturing a floating magnetic head that can bond a large number of sliders and helad chips with good workability.

(d) Means for Solving the Problems In the method for manufacturing a floating magnetic head of the present invention, a large number of head chips made of a ferromagnetic oxide material and having an operating gap formed therein are integrally formed at a predetermined pitch P. After forming a head chip block and inserting and fixing each head chip of the head chip block into each groove of a slider block in which grooves have been completely formed at the pitch P to form a joint block, the joint block is cut. It is characterized by .

(e) Function According to the above manufacturing method, a large number of helad chips are inserted and fixed into the grooves of the slider block through one joining process of the head chip block and the slider block.

(F) Example Hereinafter, a method for manufacturing a floating magnetic head of the present invention will be explained in detail with reference to the drawings.

First, after mirror polishing the upper surfaces of a pair of substrates (9) (9) made of ferromagnetic oxide material such as ferrite, desired tracks are formed on the upper surfaces of the substrates (9) (9) as shown in FIG. A plurality of grooves (11) are formed at a predetermined pitch P to define an abutting surface (10) having a width T greater than the width t.

Next, a glass groove (12) and a winding groove (13) are formed on the upper surface of one of the substrates (9) (9),
After depositing a non-magnetic thin film such as a gap spacer such as 5TOP on the upper surface of one or both of the substrates (9) (9) by sputtering, ion blating, etc. so as to obtain a desired gap length, As shown in FIG. 3, the pair of substrates (9) (9) are abutted against each other such that the abutting surfaces (to) (10) face each other with the nonmagnetic thin film interposed therebetween.

Next, a glass rod (not shown) is inserted into the glass groove (12) and the winding groove (13), and the first sales glass (14) is placed in the groove (11) by melting and solidifying the glass rod. After filling, the substrates (9) (9) are glass-bonded to form a block (15) as shown in FIG.

Next, the block (15) is cut along the broken line AA' so that the distance from the bottom surface to the depth end is a constant distance d, and then the block (15) is cut so that the distance from the bottom surface to the medium facing surface is a constant distance d. After polishing, as shown in FIG. 5, track width regulating grooves (17
) at a pitch P to form a medium facing portion (19) having an operating gap (18) with a track width t.

Next, as shown in FIG. 6, the portion (21) indicated by the two-dot chain line (20) of the block (15) is removed to form a Herad tip (22) having a width of 11 and having a medium facing portion (19). Comb-shaped head chip block (23) formed of P
form.

On the other hand, as shown in FIG. 7, a slider block (25) made of calcium titanate is prepared in which a plurality of grooves (24) having a width L (It>II) are formed at a pitch P.

Next, as shown in FIG. 8 (top view), insert the helad tip (22) of the head tip block (23) into the kerf (24) of the slider block (25), and ) on both sides of the first glass (14)
The head chip block (23) and the slider block (25) are filled with a second glass (26) having a lower melting point than the first glass (14) at a temperature that does not melt the first glass (14).
are glass-bonded to form a bonded block (27).

Next, the joining block (27) is cut along the broken line B-B', and then, as shown in FIG. 1, the central groove (28) is cut. 23) and slider block (25) 1
Workability is good because a large number of Herad chips (22) are inserted and fixed into the grooves (24) of the slider block (25) in the second joining process.

(G) Effects of the Invention According to the present invention, it is possible to attach a large number of Herad chips to the grooves of a slider in a single process, and it is possible to provide a method for manufacturing a floating magnetic head suitable for mass production. .

[Brief explanation of the drawing]

1 to 8 relate to the present invention; FIG. 1 is a perspective view showing the external appearance of a floating magnetic head; FIGS. 2, 3, 4;
FIG. 5, FIG. 6, FIG. 7, and FIG. 8 are diagrams showing a method of manufacturing a floating magnetic head, respectively. 9, FIG. 10, FIG. 11, FIG. 12, and FIG. 13 are views showing conventional floating magnetic heads, respectively. (18)...Operating gap, (22)...Head chip, (23)...Head chip block, (24)
...kerf, (25) ...slider block, (
27)...Joint block.

Claims (1)

[Claims] (1) A method for manufacturing a floating magnetic head in which a head chip made of a ferromagnetic oxide material with an operating gap is fixed in a groove of a slider made of a non-magnetic material, wherein the head chip is arranged at a predetermined pitch. A joint block is formed by forming a head chip block including a large number of pitches P, and inserting and fixing each head chip of the head chip block into each groove of a slider block in which the grooves are formed at the pitch P. 1. A method for manufacturing a floating magnetic head, comprising: cutting the bonded block.