JPH07161013A - Manufacture of laminated magnetic head - Google Patents

Abstract

PURPOSE: To simplify a working process and to improve a manufactural yield by cutting an azimuth with one time of azimuth angle regulation at the time of cutting into the last unit head core. CONSTITUTION: A laminated magnetic film 4 alternately coated an alloy magnetic film and an insulating film is formed on a magnetic or non-magnetic substrate 1, and a joining glass is coated on its opposite surface. Next, plural substrates are laminated to join, a laminated and formed block is perpendicularly cut to the laminated film 4. Next, a groove 7 for winding and a groove 8 for glass are formed in a pair of cut blocks, a glass is filled into the groove 8 for glass, a non-magnetic film is adhered on the mutually facing surfaces of a pair of blocks and joined by heating, and the block is cut into a given thickness along a desired azimuth angle (15 deg.-45 deg. as shown with a dotted line) based on the laminated magnetic film 4 of the joined block as a reference. By this way, the deviation of the azimuth angle is reduced and the working process is simplified by cutting the azimuth with one time of azimuth angle regulation and forming at the time of cutting into the last unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a laminated magnetic head, and more particularly, when manufacturing a magnetic head, an azimuth angle is cut twice from a core block state as in the prior art.
It can be manufactured by adjusting the azimuth angle once at the time of cutting the final magnetic head core chip without performing g), and not only the deviation of the azimuth angle is small, but the reference of the processed surface is always the laminated magnetic thin film in all the processes. The present invention relates to a manufacturing method for improving the manufacturing yield because it is at a right angle to and the processing process is easy.

[0002]

2. Description of the Related Art Generally, a video track is subjected to guard band azimuth recording in order to prevent reproduction of an adjacent track signal and increase a tape recording time. When such azimuth recording is performed, even if a track shift occurs, crosstalk does not occur and the signal of the adjacent track for reproduction is not reproduced, so that image quality heat can be prevented.

For this reason, in VHS (registered trademark) or the like, one direction of the R / P head is the (+) direction,
A magnetic head is manufactured by forming azimuth angles of a constant angle in the other direction (-).

That is, FIGS. 1 to 6 are manufacturing process diagrams of the above-described conventional laminated magnetic head. As shown in FIG. 1, a magnetic or non-magnetic ceramic substrate 1 is attached to a sendust.
st) or the like and a laminated magnetic film 4 in which an insulating magnetic plate 3 made of SiO ₂ is alternately formed to have a track width, and a bonding glass 5 is coated on the opposite surface. To wear.

Then, a plurality of substrates thus formed are stacked as shown in FIG. 2 and pressed in the direction of the arrow to perform high temperature bonding, and then such a block is placed at an azimuth angle of 15 degrees with respect to the tangent of the block. Cut along the dotted line with to obtain a plurality of bars as in FIG. On the pair of bars 6 and 6'cut in this way, a winding groove 7 around which a coil can be wound and a glass groove 8 for filling glass so as to strengthen the adhesive force are formed.

Then, the glass groove 8 is filled with glass and then mirror-polished, and a gap-forming substance is formed on the mirror-polished opposing surface. Then, as shown in FIG. And high temperature adhesion to form the external winding groove 9 and to form a gap line.
Further cut azimuth at a 15 degree angle with respect to 10 right angle lines. By polishing the contact surface, a unit chip magnetic head having a final structure as shown in FIG. 6 is obtained.

FIG. 7 shows the contact surface of the head manufactured as described above, and shows the azimuth angle (15 degrees) of the track with respect to the right angle of the horizontal laminated film formation.

[0008]

However, in the conventional manufacturing method as described above, since the azimuth angle cutting must be performed twice as in the steps of FIGS. 2 and 5, the angle adjustment is performed twice. Not only is the work difficult, but the deviation of the azimuth angle due to the double machining is large.
When the winding groove and the glass groove are formed on the bar obtained by the above azimuth processing, it is difficult to perform accurate numerical processing, resulting in a problem that the manufacturing yield is reduced.

Therefore, according to the present invention, unlike the prior art, the azimuth angle is taken from the block state and the azimuth angle is not cut twice, and when the final unit chip core is cut, the head is adjusted by adjusting the azimuth angle once. It can be manufactured and its purpose is to solve the problems of the prior art.

[0010]

In order to solve the above problems, the present invention forms a laminated magnetic film in which an alloy magnetic film and an insulating film are alternately formed on a magnetic or non-magnetic substrate, and the opposite surface is formed on the opposite surface. Is a first step of forming a bonding glass, a second step of laminating and bonding a plurality of substrates obtained through the first step, and cutting the laminated block in a direction perpendicular to the laminated magnetic film. A third step, a fourth step of forming a winding groove and a glass groove in the pair of blocks (I-bar and C-bar) cut by the third step, and filling the glass groove with glass; A fifth step of depositing a non-magnetic film on the opposing surface of the block and heat-bonding it, and a desired azimuth (Azim) based on the laminated magnetic film of the bonded block.
uth) A sixth step of cutting to a constant thickness along the corner,
It is characterized by consisting of.

[0011]

[Examples] The present invention will be described below. Figure 8 ~
FIG. 13 is a manufacturing process diagram showing an embodiment of the present invention. Although the processes of FIGS. 8 and 9 are the same until the stacked blocks are hot-bonded as in the conventional example of FIGS. , A plurality of bars as shown in FIG. 10 are obtained by cutting in a direction perpendicular to the laminated magnetic film 4 along the dotted line.

As shown in FIG. 11, after processing the winding groove 7 for winding the coil and the glass groove 8 for filling the glass for bonding on the pair of cut bars 6 and 6 ', the glass is cut. The groove is filled with glass and mirror-polished, and a gap material is formed on the mirror-polished facing surface.

Then, as shown in FIG. 12, the two blocks are attached to each other, and the tracks are aligned with each other and a constant pressure is applied to bond them at a high temperature to form an external winding groove 9. Set the azimuth angle to 5 as indicated by the dotted line
In order to obtain a magnetic head chip in which a laminated magnetic film is diagonally formed as shown in FIG. 13 by cutting to a desired azimuth angle and polishing the contact surface within a range of degrees to 45 degrees. Become. FIG. 14 shows the relationship between the azimuth angle on the contact surface and the track.

[0014]

As described above, according to the present invention, the azimuth cutting is not performed twice as in the prior art FIGS. 2 and 5, but the cutting is performed by adjusting the azimuth angle once when the final unit head core is cut. As a result, not only is the deviation of the azimuth angle small, but in all processes including the processing of winding grooves and glass grooves,
Since the reference of the processed surface is always perpendicular to the laminated magnetic film, there is an advantage that the working process is simple and the manufacturing yield can be improved.

[Brief description of drawings]

FIG. 1A is a part of a manufacturing process of a conventional laminated magnetic head. (B) It is a partial enlarged view of (a).

FIG. 2 is a part of a manufacturing process of a conventional laminated magnetic head.

FIG. 3 is a part of a manufacturing process of a conventional laminated magnetic head.

FIG. 4 is a part of a manufacturing process of a conventional laminated magnetic head.

FIG. 5 is a part of a manufacturing process of a conventional laminated magnetic head.

FIG. 6 is a part of a manufacturing process of a conventional laminated magnetic head.

7 is an enlarged view showing a relationship between an azimuth angle and a track on a contact surface of the structure of FIG.

FIG. 8A is a part of a manufacturing process of the laminated magnetic head of the invention. (B) It is a partial enlarged view of (a).

FIG. 9 is a part of a manufacturing process of the laminated magnetic head of the present invention.

FIG. 10 is a part of a process of manufacturing the laminated magnetic head of the present invention.

FIG. 11 is a part of a process of manufacturing the laminated magnetic head of the present invention.

FIG. 12 is a part of a manufacturing process of the laminated magnetic head of the invention.

FIG. 13 is a part of a process of manufacturing the laminated magnetic head of the present invention.

14 is an enlarged view showing a relationship between an azimuth angle and a track on a contact surface of the structure shown in FIG.

[Explanation of symbols]

1 ... Substrate, 2 ... Alloy magnetic film, 3 ... Insulating film, 4 ... Laminated magnetic film, 10 ... Gap line

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[Procedure amendment]

[Submission date] July 28, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

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[Figure 10]

[Figure 5]

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[Figure 7]

[Figure 8]

[Figure 9]

FIG. 11

[Fig. 12]

[Fig. 13]

FIG. 14

Claims (2)

[Claims] 1. A first step of forming a laminated magnetic film in which an alloy magnetic film and an insulating film are alternately formed on a magnetic or non-magnetic substrate, and forming a bonding glass on the opposite surface thereof, the first step. A second step of laminating and joining a plurality of substrates which have been subjected to the above step, a third step of cutting the laminated block in a direction perpendicular to the laminated magnetic film, and a pair of blocks cut by the third step ( I-bar
And C-bar) forming a winding groove and a glass groove, and filling the glass groove with glass, and a fifth step of depositing a non-magnetic film on the opposing surfaces of the pair of blocks and heat-bonding them. And a sixth step of cutting the laminated magnetic film of the joined block to a constant thickness along a desired azimuth angle, as a reference, and a sixth step. 2. The azimuth angle of 5 ° to 45 in the sixth step.
The method of manufacturing a laminated magnetic head according to claim 1, wherein the cutting is performed at a temperature of 10.