JP2001118213A - Magnetic head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic head for performing recording/reproducing oppositely to a flexible disk, wherein any deterioration of a recording/ reproducing characteristic with time is prevented, and the reliability is enhanced. SOLUTION: This magnetic head is provided with a magnetic head part 23 having a magnetic gap 34 formed, and a slider 22 for supporting the magnetic head part 23 to hold it, and generating a floating force to a magnetic disk and, in a sliding surface 37A formed cooperatively by the magnetic head part 23 and the slider 22, magnetic recording/reproducing processing is performed for the opposing magnetic disk via the magnetic gap 34. By providing the magnetic head part 23 and the slider 22 so as to be directly abutted on a sliding surface 27A, the wear of the magnetic head part 23 is reduced, and the deterioration of a recording/reproducing characteristic is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head,
In particular, the present invention relates to a magnetic head that performs recording and reproduction processing facing a flexible disk.

[0002]

2. Description of the Related Art Generally, a magnetic recording medium has a coercive force of 9%.
A normal magnetic disk drive (hereinafter, referred to as a normal magnetic disk drive) using a magnetic disk having a flexibility of less than or equal to 00 Oersted (Oe) (hereinafter, referred to as a normal magnetic disk drive) has a low rotation speed of the magnetic disk (referred to as a normal magnetic disk drive). 300r
pm), the magnetic recording / reproducing process is performed by bringing the magnetic head into direct contact with the magnetic disk.

However, in recent years, high-density recording on magnetic disks has been advanced, and accordingly, the rotation speed of the magnetic disks has been increased (for example, 3000 rpm) and the coercive force of the magnetic disks has been increased to 1500 Oe or more. (Hereinafter, this magnetic disk is referred to as a high-capacity magnetic disk) and a magnetic disk device having a narrow magnetic head (hereinafter, referred to as a large-capacity magnetic disk device).
Is provided.

[0004] In this large-capacity magnetic disk drive, the disk rotation speed is high. Therefore, in a method in which the magnetic head is brought into direct sliding contact with the normal magnetic disk as in a normal magnetic disk drive, the magnetic disk and the magnetic head may be damaged. There is. For this reason, in this type of large-capacity magnetic disk device, the magnetic head is lifted with respect to the high-capacity magnetic disk by a levitation force obtained by a change in air flow generated by a relative speed between the slider surface of the magnetic head and the magnetic disk. A method of performing magnetic recording or reproduction while maintaining a pseudo non-contact state is employed.

FIGS. 12 and 13 show an example of a magnetic head used in a conventional large-capacity magnetic disk drive.
As shown in each of the drawings, a conventional magnetic head 1 generally includes a slider 2 and a magnetic head unit 3. FIG. 12 is a perspective view of the magnetic head 1, and FIG.
FIG. 3A is a plan view of the magnetic head 1, and FIG.
2 is a front view of the magnetic head 1. FIG.

The slider 2 is formed of ceramic and has a function of supporting the magnetic head 3 so as to sandwich the magnetic head 3 and a function of floating the magnetic head 3 against a magnetic disk (not shown). The upper surface of the slider 2 has an air bearing surface (5, 6) for forming an air bearing with the magnetic disk. A center groove 4 is formed at the center of the upper surface of the slider 2, and the center groove 4 causes the air bearing surface to have a first air bearing surface 5 located on the left side and a second bearing located on the right side in FIG. Surface 6 is defined.

Further, a groove 7 is formed in the slider 2, and the formation side of the first air bearing surface 5 is separated into an upper plate portion 8 and a lower plate portion 9 by forming the groove 7. It has a configuration. U-shaped grooves 10 and 11 for disposing the magnetic head 3 are formed at predetermined positions of the upper plate 8 and the lower plate 9. The magnetic head unit 3 performs a recording / reproducing process on a magnetic disk, and has a configuration in which core halves 12 and 13 made of a thin plate-shaped magnetic material are abutted via a gap material to form a magnetic gap 14. I have. A coil 16 is wound around the core half 12.

The magnetic head 3 is mounted in U-shaped grooves 10 and 11 formed in the slider 2. U-shaped groove 1
The reference numerals 0 and 11 are formed larger than the magnetic head 3, so that a glass material 15 serving as a bonding material is loaded in a gap formed between the U-shaped grooves 10 and 11 and the magnetic head 3. I have. As a result, the magnetic head 3 is supported while being sandwiched by the slider 2.

At this time, at least a predetermined area surface near the magnetic gap 1 where the magnetic gap 14 is formed (hereinafter, this surface is referred to as a sliding contact surface 17) is, as shown in FIG. Magnetic head 3, glass 15
Are formed so as to be flush with each other with high precision, so that stable magnetic recording / reproducing processing is performed.

That is, the sliding surface 17 is a position where the recording / reproducing process is performed, and the flying height of the magnetic disk is controlled so as to approach the magnetic gap 14 at the sliding surface 17. This is because when the distance between the magnetic disk and the magnetic gap 14 increases, the magnetic resistance increases, and good (high output) recording / reproducing processing cannot be performed.

However, if the height of the slider 2, the magnetic head portion 3, and the height of the glass material 15 on the sliding contact surface 17 vary, the flying height of the magnetic disk cannot be controlled properly. The distance from the magnetic gap 14 becomes unstable, and good recording / reproducing processing cannot be performed. Therefore, the magnetic recording / reproducing process can be stabilized and the output can be increased by making the sliding contact surface 17 the same with high precision.

[0012]

By the way, as described above, the magnetic disk drive has a configuration in which the magnetic head 1 is floated with respect to the magnetic disk to perform magnetic recording and reproduction. However, the magnetic disk and the magnetic head 1 are in contact with each other before the start of the magnetic disk drive.
Until the surface floats, the magnetic disk is in sliding contact with the magnetic head 1.

Further, since the magnetic disk has flexibility, it does not always rotate in a constant state, but actually rotates with some bending. Therefore, when an external force is applied to the large-capacity magnetic disk device, the magnetic disk rotating at a high speed may come into sliding contact with the magnetic head 1. Further, the glass material 15 provided on the sliding contact surface 17 needs to have a lower melting point than the gap material provided on the magnetic gap 14, and the slider 2 (made of ceramic), the core half 12, Low melting point glass that is softer than 13 (made of ferrite) is frequently used.

Therefore, when the magnetic disk slides on the magnetic head 1 as described above, as shown in FIG. 14B, the glass material 15 exposed on the sliding contact surface 17 provides the magnetic disk with abrasion resistance. It is scraped by the added component (for example, alumina or the like) contained for the purpose of improvement. When the glass material 15 is cut in this way, the magnetic head portion 3 is exposed on the sliding contact surface 17. Therefore, the magnetic head portion 3 itself is scraped by the additional component contained in the magnetic disk as shown in FIG. 14C.

When the magnetic head 3 itself is cut in this manner, the distance between the magnetic disk and the magnetic gap 14 becomes large during magnetic recording / reproducing (this phenomenon is called spacing), and the recording / reproducing characteristics deteriorate. There has been a problem that proper magnetic recording / reproducing processing cannot be performed. The present invention has been made in view of the above points,
An object of the present invention is to provide a highly reliable magnetic head that does not cause deterioration in recording / reproducing characteristics.

[0016]

Means for Solving the Problems In order to solve the above problems, the present invention is characterized by taking the following various means. The invention according to claim 1 includes a magnetic head portion having a magnetic gap formed therein, and a slider for supporting the magnetic head portion so as to sandwich the magnetic head portion, and the magnetic head portion and the slider are formed in cooperation with each other. On the sliding surface,
In a magnetic head for performing a magnetic recording / reproducing process on an opposing medium using the magnetic gap, the magnetic head portion and the slider are configured to directly abut on the sliding contact surface. .

According to the first aspect of the present invention, the magnetic head portion and the slider are in direct contact with each other on the sliding contact surface, so that the bonding material such as glass is exposed on the sliding contact surface as in the conventional case. No scraping of the joining material caused by the above occurs.
Accordingly, the magnetic head portion is always protected by the slider, and it is possible to prevent the magnetic head from being scraped due to sliding contact with the medium. As a result, there is no occurrence of spacing between the medium and the magnetic head portion, and it is possible to maintain a favorable magnetic recording / reproducing process without a decrease in output.

According to a second aspect of the present invention, in the magnetic head of the first aspect, the magnetic head and the slider are joined at a position separated from the sliding contact surface. It is assumed that. Claim 2
According to the described invention, the magnetic head portion and the slider are joined at a position separated from the sliding contact surface, so that the magnetic head portion and the slider directly contact the sliding contact surface, The magnetic head and the slider can be securely joined, and the mechanical strength can be maintained.

According to a third aspect of the present invention, there is provided the magnetic head according to the first or second aspect, wherein the slider comprises:
It is characterized by comprising a first slider part which contacts one side surface of the magnetic head part, and a second slider part which contacts the other side surface of the magnetic head part.

According to the third aspect of the present invention, the slider is constituted by the first slider portion and the second slider portion, and each slider portion comes into contact with both sides of the magnetic head portion. In addition, the processing of the slider can be easily performed as compared with the configuration in which each slider portion is integrated. According to a fourth aspect of the present invention, in the magnetic head according to the third aspect, the first slider section and the second
A spacer is disposed at a position facing the slider portion and at a position other than the position where the magnetic head is disposed.

According to the fourth aspect of the present invention, the spacer is provided at a position facing the first slider portion and the second slider portion and at a position other than the position where the magnetic head is provided. Accordingly, it is possible to prevent a gap from being formed on the sliding contact surface. In addition, the cost can be reduced as compared with the configuration in which the magnetic head is disposed in the entire longitudinal direction of the magnetic head.

According to a fifth aspect of the present invention, there is provided a magnetic head portion having a magnetic gap formed therein, and a slider for supporting the magnetic head portion so as to sandwich the magnetic head portion. In a magnetic head that performs magnetic recording / reproducing processing on the opposed medium by using the magnetic gap on a sliding contact surface formed by operating, the magnetic head unit and the slider are joined using a joining material. When the length of the joining material exposed on the sliding contact surface in the track width direction is L1, and the length of the magnetic gap in the track width direction is L2, the length L1 of the joining material in the track width direction is L1. , (L2 / 20) <L1 <(L2 /
5).

According to the fifth aspect of the present invention, by joining the magnetic head portion and the slider using a joining material, even if a manufacturing error or the like occurs in the magnetic head portion and the slider, this error can be prevented. Since the gap generated due to the error is filled with the bonding material, no magnetic powder or the like is generated at the time of sliding contact with the medium. The length L1 of the bonding material in the track width direction is (L2 / 20) <L1 <(L2 / 5) with respect to the length L2 of the magnetic gap in the track width direction.
, So that the bonding material is not scraped by the medium even if the bonding material is exposed on the sliding contact surface, and therefore the recording / reproducing output does not decrease. .

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show a magnetic head 20A according to a first embodiment of the present invention. FIG. 1 is a perspective view of a magnetic head 20A, and FIG.
FIG. 2B is a front view of the magnetic head 20A, and FIG. 3 is an enlarged view of the sliding contact surface 37A.

The magnetic head 20A is mounted on a large-capacity magnetic disk device corresponding to a high-capacity magnetic disk having a coercive force of 1500 Oe or more. The magnetic head 20A is roughly similar to the slider 2
2 and a magnetic head 23 and the like. The slider 22 is formed of ceramic, and includes a first slider portion 28 and a second slider portion 29. This slider 22 is used for the magnetic head 2.
3 and a function of supporting the magnetic head portion 23 to float with respect to a magnetic disk (not shown).

The upper surface of the slider 22 has an air bearing surface (25, 26) for forming an air bearing with the magnetic disk. A center groove 24 is formed at the center of the upper surface of the slider 22, and the center groove 24 allows the air bearing surface to be located on the first air bearing surface 25 located on the left side in the figure and the second bearing located on the right side in the drawing. Surface 26 is defined. The first air bearing surface 25 has a configuration in which the first slider portion 28 and the second slider portion 29 cooperate with each other because the magnetic head portion 23 is interposed in the center portion. .

As described above, the slider 22 according to the present embodiment is not formed as an integrated structure as in the related art.
The first slider section 28 and the second slider section 29 are separately formed. As described above, by forming the slider 22 by the first slider portion 28 and the second slider portion 29 which are separately formed, the slider 22 is integrated as in the related art (see FIGS. 12 and 13). Slider 22 compared to)
Can be easily processed.

A groove 27 is formed in the first slider portion 28. By forming the groove 27, the first slider portion 28 is formed on the upper plate portion 48 on the side where the first air bearing surface 25 is formed. And a lower plate portion 49. A glass material loading groove 28A into which a glass material 35 to be described later is loaded is formed at a lower end position (backside position) of the upper plate portion 48 on the side facing the magnetic head portion 23. The glass material loading groove 28A has a sliding contact surface 37A.
Are not formed, and the formation position is selected at the lower end position of the upper plate portion 48 to the last.

Similarly, the second slider portion 29 has grooves 3
0 is formed, and by forming this groove 30,
The second slider portion 29 has a configuration separated into an upper plate portion 50 and a lower plate portion 51. Further, the lower end position of the upper plate portion 51 on the side facing the magnetic head portion 23 (backside position).
Is formed with a glass material loading groove 29A into which a glass material 35 described later is loaded. This glass material loading groove 29A
Is not formed up to the sliding contact surface 37 </ b> A, and the formation position is selected at the lower end position of the upper plate portion 50.

The magnetic head unit 23 performs a recording / reproducing process on a magnetic disk.
And a spacer 38 and the like. Core half 3
Reference numerals 2 and 33 are made of a thin plate-shaped magnetic material (for example, ferrite), and have a configuration in which a magnetic gap 34 is formed by butting through a gap material. A coil 36 is wound around the core half 32. The spacer 38 is formed of ceramic similarly to the slider 22, and an adhesive 46 is applied to the core half 33 (see FIG. 10).
Are formed so as to extend in the longitudinal direction of the magnetic head 20A.

The magnetic head portion 23 having the above-described structure has a first slider portion 28 and a second slider portion 29 joined to both sides thereof, whereby the magnetic head portion 23 is in the first position.
Is sandwiched between the slider section 28 and the second slider section 29. Therefore, the magnetic head unit 23 is configured to be supported by the first and second slider units 28 and 29.

Here, a magnetic head portion (a magnetic head portion composed of only the core halves 32 and 33) without the spacer 38 is interposed between the first slider portion 28 and the second slider portion. Assume the configuration. When the magnetic head portion is sandwiched between the pair of slider portions 28 and 29, the first slider portion 2 is located at a position other than where the magnetic head portion is provided.
A gap is generated between the second slider section 8 and the second slider section 29. When the gap is formed in the first air bearing surface 25 in this manner, the air flow for floating flows out of the gap to the outside, and the magnetic head portion 32 and the magnetic disk slide closer than necessary. There is a risk that it will.

However, the magnetic head 2 according to the present embodiment
By providing the spacer 38 as in 3, it is possible to prevent a gap from being formed in the first air bearing surface 25 (including the sliding contact surface 37A), and to make sliding contact between the magnetic head portion 32 and the magnetic disk. Can be avoided.
As a method of filling the gap, a method of extending the core half 33 long in the entire longitudinal direction of the magnetic head or a method of forming a step in the first or second slider portion 28 or 29 to fill the gap. However, in the former case, the cost increases, and in the latter method, the processing of the slider portions 28 and 29 becomes troublesome. On the other hand, according to the configuration of the present embodiment, the gap can be filled easily and at low cost.

Here, attention is paid to the joint structure between the magnetic head 23 and the sliders 28 and 29. Magnetic head 2
The joining between the third slider section 28 and the first slider section 28 and the joining between the magnetic head section 23 and the second slider section 29 are performed using a glass material 35 serving as a joining material. At this time, the magnetic head 23 and the first slider 28 are joined to each other by the upper plate 48.
The glass material 35 loaded in the glass material loading groove 28A formed at the bottom and the glass material 3 disposed at the tip of the lower plate portion 49.
5 is performed. The magnetic head 23 and the second slider 29 are joined to each other by disposing the glass 35 loaded in the glass loading groove 29A formed in the upper plate 50 and the distal end of the lower plate 51. This is performed by using the glass material 35 that has been performed.

As described above, the formation positions of the glass material loading groove 28A and the glass material loading groove 29A are selected at the lower positions of the tips of the upper plates 48 and 50. Therefore, according to the configuration of the present embodiment, as shown in an enlarged manner in FIG. 3, the magnetic head 23 and each of the sliders 28 and 29 are in contact with the sliding contact surface 37A.
The glass member 35 is disposed at a position separated from the glass member 35, so that the glass member 35 is in contact with the sliding surface 37A.
Is not exposed. In other words, the magnetic head 20A according to the present embodiment has a configuration in which the magnetic head portion 23 and the slider portions 28 and 29 are in direct contact on the sliding contact surface 37A.

Thus, even if the magnetic disk slides on the magnetic head 20A after the magnetic disk drive is started and before the magnetic head 20A floats, the magnetic head portion 23
Are first and second slider portions 28, 2 made of ceramic.
9 protects the magnetic head 23 from being scraped by the magnetic disk (additional component such as alumina). Therefore, there is no occurrence of spacing (gap) between the magnetic disk and the magnetic head section 23, and it is possible to maintain a good magnetic recording / reproducing process without a decrease in output.

Since the magnetic head 23 and the sliders 28 and 29 are joined by the glass material 35 at a position separated from the sliding surface 37A as described above, the magnetic head 23 and the sliders 28 and 29 are connected to the magnetic head 23 at the sliding contact surface 37A. Each slider 28,
29 may be in direct contact with the magnetic head unit 2.
3 and each of the sliders 28 and 29 can be firmly joined, and the mechanical strength can be maintained.

Next, a second embodiment of the present invention will be described. FIG. 4 shows a magnetic head 2 according to a second embodiment of the present invention.
It is a figure which expands and shows the vicinity of the sliding contact surface 37B of 0B. still,
4, the same components as those of the magnetic head 20A according to the first embodiment described with reference to FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof is omitted.

The magnetic head 20 according to the first embodiment described above
A, the configuration is such that the magnetic head portion 23 and the slider portions 28 and 29 directly contact each other on the sliding contact surface 37A,
Therefore, the configuration is such that nothing intervenes between the magnetic head 23 and the sliders 28 and 29. On the other hand, in the magnetic head 20B according to the present embodiment, the second glass material 40 having a minute width is interposed between the magnetic head portion 23 and each of the slider portions 28 and 29 on the sliding contact surface 37B. It is characterized by having made it. In this embodiment, the second glass material 40 uses the same glass material as the glass material 35 described above. However, the second glass material 4
The material of 0 is not limited to a glass material, and other materials having a magnetic insulating property can be used.

When focusing on the width (width in the track width direction) of the second glass material 40 exposed on the sliding contact surface 37A, this width is set to L1 and the magnetic gap 34 is set.
Let L2 be the length in the track width direction (L1 and L2 are indicated by arrows in FIG. 4), and the width L1 of the second glass material 40
Is set to a fine dimension such that (L2 / 20) <L1 <(L2 / 5).

As described above, by setting the width L1 of the second glass member 40 to be smaller than the width L2 of the magnetic gap 34, the second glass member 40 is brought into contact with the sliding surface 3.
7A, the magnetic disk can be used for the second configuration.
Of the glass material 40 is not shaved, so that the recording / reproducing output does not decrease. Further, even if a manufacturing error or the like occurs in the magnetic head 23 and the sliders 28 and 29 due to the second glass material 40 interposed between the magnetic head 23 and the sliders 28 and 29. Since the gap generated in the sliding contact surface 37A due to this error is filled with the second glass material 40, magnetic powder or the like is generated at the time of sliding contact with the magnetic disk, and this magnetic powder is contained in the gap. Intrusion can be prevented.

Next, a method of manufacturing the magnetic head having the above-described configuration will be described. In the following description,
The method of manufacturing the magnetic head 20A according to the first embodiment described with reference to FIGS. 1 to 3 will be described as an example. The magnetic head 20A is generally manufactured through a slider manufacturing process, a magnetic head portion manufacturing process, and a final assembly process. 5 and 6 are views for explaining a slider manufacturing process. As described above, the slider 22 includes the first slider section 28 and the second slider section 29, and each of the slider sections 2
8, 29 are manufactured separately.

FIGS. 5 and 6 are views for explaining a slider manufacturing process. To manufacture the first slider portion 28, first, the ceramic block 4 as shown in FIG.
Prepare 1 Then, by machining the ceramic block 41, the central groove 24, the groove 27, and the glass material loading groove 28A are formed. Further, the abutting surface 28B, which abuts against the air bearing surfaces 25 and 26 and the magnetic head 23, is processed by polishing to be a smooth surface. Note that the second slider portion 29 is also the first slider described above.
Since the slider portion 28 is manufactured according to the manufacturing method, the description thereof is omitted here.

FIGS. 7 to 10 are views for explaining the steps of manufacturing the magnetic head portion. To manufacture the magnetic head portion 23, first, as shown in FIG. 7, a first core block 42, a second core block 43, and a spacer block 44 are manufactured. First and second core blocks 4
Nos. 2 and 43 are manufactured by cutting a ferrite block material to form coil winding grooves 42a and 43a. The spacer block 44
It is manufactured by cutting a ceramic block material to form a joining groove 44a.

As described above, the first core block 42,
Second core block 43 and spacer block 4
4 is manufactured, each of the blocks 42, 43, 44
Are bonded by using an adhesive 46 as shown in FIG. 8, and a magnetic head block 45 is manufactured. At this time, a gap material is interposed at the joint surface between the first core block 42 and the second core block 43 at a position to become the magnetic gap 34 later. In addition, as the adhesive 46 used here,
A glass material having a higher melting point than the glass material 35 described above is selected.

When the magnetic head block 45 is manufactured as described above, the magnetic head block 45 is subsequently cut at the position shown by the broken line in FIG. 8 to form the magnetic head body 23A shown in FIG. . Then, as shown in FIG.
The magnetic head portion 23A is manufactured by performing a cutting process on the magnetic head portion body 23A to form the step portion 39.

When the sliders 28 and 29 and the magnetic head 23 are manufactured as described above, a final assembly process is subsequently performed. FIG. 11 is a diagram for explaining the final assembly process. In the final assembling step, the slider portions 28 and 29 and the magnetic head portion 23 are abutted as shown, and the glass material loading grooves 28A and 29A and the lower plate portions 4 are formed.
The glass material 35 is loaded on the tips of the components 9 and 51 and the sliders 28 and 29 are joined to the magnetic head 23 by heating. Thus, the magnetic head 20A shown in FIGS. 1 to 3 is manufactured.

In the manufacturing process of the magnetic head 20B according to the second embodiment, in the final assembly process, the upper plate portions 48, 5
The only difference is that a second glass material 40 having a fine width dimension is interposed between the magnetic head part 23 and the magnetic head part 23, and the description and illustration thereof are omitted. In each of the embodiments described above, the magnetic heads 20A and 20B corresponding to a high-capacity magnetic disk have been described as examples. However, the present invention is applicable to a magnetic head corresponding to a low-capacity magnetic disk. It is.

[0049]

According to the present invention as described above, the following various effects can be realized. According to the first aspect of the present invention, the magnetic head portion is always protected by the slider, so that the magnetic head can be prevented from being scraped due to sliding contact with the medium, and therefore, the magnetic head portion can be prevented from sliding. Since pacing does not occur, it is possible to maintain good magnetic recording / reproducing processing without a decrease in output.

According to the second aspect of the present invention, the magnetic head and the slider can be securely joined even if the magnetic head and the slider are brought into direct contact with each other on the sliding contact surface. Strength can be maintained. According to the third aspect of the present invention, the slider can be easily processed as compared with a configuration in which the first and second slider portions are integrated.

According to the fourth aspect of the present invention, it is possible to prevent a gap from being formed on the sliding contact surface, and to reduce the cost as compared with a configuration in which the magnetic head is disposed in the entire longitudinal direction of the magnetic head. Can be planned. According to the fifth aspect of the present invention, by joining the magnetic head portion and the slider using the joining material, even if a manufacturing error or the like occurs in the magnetic head portion and the slider, the error is caused by the error. The gap created by this is filled with the bonding material, so that no magnetic powder or the like is generated at the time of sliding contact with the medium.

The length L1 of the joining material in the track width direction
Has a small length, so that even if the joining material is exposed on the sliding contact surface, the joining material is not shaved by the medium, and therefore, the recording / reproducing output does not decrease.

[Brief description of the drawings]

FIG. 1 is a perspective view of a magnetic head according to a first embodiment of the present invention.

FIG. 2 is a plan view and a front view of a magnetic head according to a first embodiment of the present invention.

FIG. 3 is an enlarged perspective view showing the vicinity of a sliding contact surface of the magnetic head according to the first embodiment of the present invention.

FIG. 4 is an enlarged perspective view showing the vicinity of a sliding contact surface of a magnetic head according to a second embodiment of the present invention.

FIG. 5 is a diagram for explaining a method of manufacturing the magnetic head, and is a diagram for explaining a manufacturing process of the slider (part 1).

FIG. 6 is a diagram for explaining the method of manufacturing the magnetic head, and is a diagram for explaining the manufacturing process of the slider (part 2).

FIG. 7 is a diagram for explaining a method of manufacturing a magnetic head, and is a diagram for explaining a manufacturing process of a magnetic head portion (part 1).

FIG. 8 is a diagram for explaining the method of manufacturing the magnetic head, and is a diagram for explaining the manufacturing process of the magnetic head portion (part 2).

FIG. 9 is a diagram for explaining the method of manufacturing the magnetic head, and is a diagram for explaining the manufacturing process of the magnetic head portion (part 3).

FIG. 10 is a diagram for explaining the method of manufacturing the magnetic head, and is a diagram for explaining the manufacturing process of the magnetic head portion (part 4).

FIG. 11 is a diagram for explaining a method of manufacturing a magnetic head, and is a diagram for explaining a final assembly process.

FIG. 12 is a perspective view of a conventional magnetic head.

FIG. 13 is a plan view and a front view of a magnetic head as an example of the related art.

FIG. 14 is a diagram for explaining a problem that has occurred in a conventional magnetic head.

[Explanation of symbols]

 20A, 20B Magnetic head 22 Slider 23 Magnetic head part 24 Central groove 27, 30 groove 28 First slider part 28A, 29A Glass material loading groove 29 Second slider part 32, 33 Core half body 34 Magnetic gap 35 Glass material 36 Coils 37A, 37B Sliding contact surface 38 Spacer 40 Second glass material 41 Ceramic block 42, 43 Core half block 44 Spacer block 45 Magnetic head block

Claims (5)

[Claims] A magnetic head portion having a magnetic gap formed thereon; and a slider for supporting the magnetic head portion so as to sandwich the magnetic head portion, wherein a sliding contact surface formed by the magnetic head portion and the slider cooperating with each other. A magnetic head for performing a magnetic recording / reproducing process on an opposing medium using the magnetic gap, wherein the magnetic head portion and the slider are directly in contact with each other on the sliding contact surface. head. 2. The magnetic head according to claim 1, wherein the magnetic head and the slider are joined at a position separated from the sliding contact surface. 3. The magnetic head according to claim 1, wherein the slider has a first slider portion in contact with one side surface of the magnetic head portion, and a second slider portion in contact with the other side surface of the magnetic head portion. A magnetic head comprising a slider part. 4. The magnetic head according to claim 3, wherein a spacer is provided at a position facing the first slider portion and the second slider portion and at a position other than a position where the magnetic head is provided. A magnetic head characterized in that: 5. A sliding contact surface, comprising: a magnetic head portion having a magnetic gap formed therein; and a slider for supporting the magnetic head portion so as to sandwich the magnetic head portion, wherein the magnetic head portion and the slider form in cooperation with each other. A magnetic head that performs a magnetic recording / reproducing process on the opposing medium using the magnetic gap, wherein the magnetic head portion and the slider are joined using a joining material and are exposed on the sliding contact surface. When the length of the bonding material in the track width direction is L1 and the length of the magnetic gap in the track width direction is L2, the length L1 of the bonding material in the track width direction is (L2 / 20) <L1. <(L
(2/5) A magnetic head characterized in that: