JPH10162481A - Magnetic head and magnetic recording medium recording and reproducing device equipped with the head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with enhancement of a data transfer rate and enhancement of surface recording density by recording and reproducing an information signal, etc., in contact with a flexible disk and enhancing a reproducing output. SOLUTION: One pair of magnetic head 1 concerned are for the purpose of recording and reproducing an information signal from both sides of a magnetic recording medium, and are disposed to hold the magnetic recording medium between them at the time of recording and reproducing the information signal, etc., by keeping their medium sliding surfaces 1a in approximate contact with the main surfaces of the magnetic recording medium. Each medium sliding surface 1a is provided with at least one or more elastic member(s) 5 to come in slide contact with the main surface of the magnetic recording medium. The magnetic recording medium recording and reproducing device is operated to perform recording and reproducing of the information signal by the one pair of magnetic heads equipped with the elastic members on their medium sliding surfaces, holding the magnetic recording medium between them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head for recording and reproducing information signals and the like on and from a main surface of a disk-shaped magnetic recording medium, and a recording / reproducing apparatus for a magnetic recording medium provided with the magnetic head.

[0002]

2. Description of the Related Art At present, for example, a flexible disk is widely used as a disk-shaped magnetic recording medium. A magnetic head that performs recording and reproduction with respect to this flexible disk is generally held in a substantially contact state with the main surface of the flexible disk, and performs recording and reproduction of information signals and the like. This flexible disk is 300
The recording and reproduction of the information signal is performed by being rotationally driven at a rotation speed of about 600 rpm.

A flexible disk on which an information signal is recorded / reproduced by the above-mentioned magnetic head generally has a recording capacity of about 1.44 megabytes when formatting, but a recording disk with an increased recording capacity of 150 to 650 megabytes is also available. Proposed.

The data transfer rate of this flexible disk is improved by increasing the recording density and performing recording and reproduction at a rotational speed of about 1200 to 3600 rpm by a recording and reproducing apparatus.
Here, when recording and reproducing information signals and the like on the flexible disk, a load is applied to the magnetic head by a slider support mechanism provided in the recording and reproducing device, and the magnetic head is pressed against the flexible disk. When the flexible disk is rotationally driven, the slider is pressed against the flexible disk by the slider support mechanism, and a floating force is applied by the airflow by rotating the flexible disk. Since the pressing force of the slider support mechanism is larger than the floating force of the flexible disk, the recording and reproduction of the information signal is performed in substantially contact with the slider.

In the recording / reproducing apparatus having the above-described magnetic head, the magnetic head is joined to a gimbal provided at the tip of a slider support mechanism, and a pair of magnetic heads record information signals and the like so as to sandwich a flexible disk. Playing. Here, the magnetic head has a slider that slides on the flexible disk. The slider is formed substantially flat so as to slide on the flexible disk.

As described above, when recording / reproducing an information signal or the like on a flexible disk, the magnetic head performs recording / reproduction while sliding on the flexible disk, thereby improving the electromagnetic conversion characteristics.

[0007]

However, in the recording / reproducing apparatus equipped with the above-described magnetic head, it is necessary to perform recording / reproducing by rotating the flexible disk at high speed in order to improve the data transfer rate. As described above, when the recording / reproducing apparatus rotates the flexible disk at a high speed, a floating force is applied to the magnetic head by the airflow formed between the magnetic disk and the flexible disk. And
When the floating force increases, the magnetic head floats from the flexible disk and slides with the flexible disk to make it impossible to perform recording and reproduction. The floating force from the flexible disk becomes more remarkable as the area of the magnetic head facing the flexible disk increases.

As a disk-shaped magnetic recording medium, there is a hard disk in which a magnetic layer is laminated on a substrate made of, for example, a polycarbonate resin. A magnetic head that performs recording and reproduction on this hard disk is generally configured as a flying head that performs recording and reproduction of information signals via the surface of the hard disk and a minute air layer during recording and reproduction. In recent years, even in the hard disk media, the spacing between the magnetic head and the magnetic head has been changed from the micro order to the nano order in order to increase the density of the flexible disk and improve the signal transfer rate.

When the distance between the flexible disk and the magnetic head is increased by the floating force from the flexible disk, the reproduction output of the magnetic head is reduced, and when the space is further reduced, the performance as a recording / reproducing apparatus is lost.

Therefore, as a method of narrowing the space between the magnetic head and the flexible disk, there is a method of generating a negative pressure between the magnetic head and the flexible disk at the time of recording / reproducing to suppress the flying height of the magnetic head. is there. However, in such a method, the recording and reproduction of the information signal are performed without contact between the flexible disk and the magnetic head, so that there is a limit in improving the reproduction output of the magnetic head.
Therefore, there is a limit in improving the areal recording density in the above method.

Further, if the distance between the magnetic head and the flexible disk is reduced, there is a problem that the magnetic head is likely to collide with the flexible disk during recording and reproduction. Thus, when the magnetic head collides with the flexible disk, the magnetic disk causes damage to the flexible disk. Further, the magnetic head has a problem that if the collision with the flexible disk occurs frequently, the wear becomes remarkable and the life is shortened.

Therefore, the present invention has been proposed in view of the above-described circumstances, and by recording and reproducing information signals and the like while making contact with a flexible disk,
It is an object of the present invention to provide a magnetic head and a recording / reproducing apparatus for a magnetic recording medium capable of improving a data transfer rate and an areal recording density by improving a reproduction output.

[0013]

According to the present invention, there is provided a magnetic head for recording and reproducing information signals and the like by holding a medium sliding surface substantially in contact with a main surface of a magnetic recording medium. When you do, it is arranged to sandwich the magnetic recording medium,
A magnetic head for recording and reproducing information signals from both sides of a magnetic recording medium, wherein at least one elastic material is provided on a sliding surface of the medium so as to be in sliding contact with a main surface of the magnetic recording medium. Things.

On the medium sliding surface of the magnetic head, a magnetic core for slidingly contacting a magnetic recording medium to record and reproduce information signals and the elastic material in a direction perpendicular to the sliding direction. You may arrange | position so that it may become substantially symmetric.

Since the magnetic head thus configured has an elastic material on the medium sliding surface, the magnetic material is brought into contact with the magnetic recording medium to record and reproduce information signals, thereby obtaining a magnetic recording medium. It is possible to record and reproduce information signals on the magnetic recording medium while sliding.

Further, in the recording / reproducing apparatus for a magnetic recording medium according to the present invention, when recording / reproducing an information signal by bringing the medium sliding surface close to the magnetic recording medium, the information signal is read from both sides of the magnetic recording medium by the magnetic head. Recording / reproducing apparatus for recording / reproducing a magnetic recording medium, characterized in that recording / reproducing of an information signal is performed by sandwiching the magnetic recording medium by a pair of magnetic heads having an elastic material on a medium sliding surface. It is.

In the magnetic recording medium recording / reproducing apparatus thus configured, a pair of magnetic heads having an elastic material on the medium sliding surface perform recording / reproducing of an information signal by sandwiching the magnetic recording medium. The recording / reproducing of the information signal is performed by sliding the elastic material provided on the magnetic recording medium so that the magnetic head slides on the magnetic recording medium. It becomes possible.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a magnetic head and a reproducing apparatus for a magnetic recording medium according to the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, a magnetic head 1 according to this embodiment has a magnetic core 2 for recording and reproducing information signals.
And a first slider 3 and a second slider 4 which are joined to the side surface of the magnetic core 2, and the upper surface thereof becomes the medium sliding surface 1 a. A pad 5 functioning as an elastic material is provided on the upper surface 4a of the second slider 4.

In the following description, in the magnetic head 1 according to the present embodiment, the side located on the front side of the rotationally driven flexible disk D is simply referred to as the forward side, and the rotationally driven flexible disk D Is simply referred to as a rear side.

As shown in FIG. 1, the medium sliding surface 1a has a flexible disk D (not shown) during recording and reproduction.
Is a surface that comes into sliding contact with the main surface of the flexible disk D when it is rotationally driven in the sliding direction A. The pads 5 are arranged on the upper surface 4a of the second slider 4 so as to be symmetric with respect to the magnetic core 2 in a direction orthogonal to the sliding direction A.
Is provided. The pad 5 is formed in a substantially round shape, and is joined to the upper surface 4a of the second slider 4 with, for example, a double-sided tape.

The pad 5 mainly includes the magnetic head 1
Is provided for sliding contact with the flexible disk D when recording and reproducing information signals and the like. Also, pad 5
Are formed with the same height dimensions as the medium sliding surface 1a composed of the magnetic core 2 and the like. Therefore, this pad 5
During recording and reproduction, the magnetic core 2 can be brought into sliding contact with the flexible disk.

The pad 5 is made of, for example, a material having elasticity. The magnetic head 1 is provided in a head carriage provided in a magnetic recording medium recording / reproducing apparatus described later, and absorbs vibration of the head carriage. Further, even if the flexible disk D and the magnetic head 1 collide, the pad 5 can absorb the collision between the magnetic head 1 and the flexible disk D. Further, since the pad 5 is made of an elastic material, it can be pressed against the flexible disk D at the time of recording / reproducing, and the vibration of the magnetic head 1 can be attenuated.

On the surface 5a of the pad 5, a protective film is formed by a lubricant or a protective agent. Since this protective film is formed on the pad 5, even when the pad 5 is in sliding contact with the flexible disk D during recording and reproduction, the contact with the flexible disk D is made smooth. Therefore, even if the pad 5 comes into contact with the flexible disk D, it does not damage the flexible disk D or shorten the life of the magnetic head 1.

Since the pad 5 is brought into sliding contact with the flexible disk D during recording and reproduction,
There is no possibility that the magnetic head 1 and the flexible disk D are levitated by a floating force generated by an air flow.

The magnetic head 1 has a single pad 5 on the upper surface 4a of the second slider 4, as shown in FIG.
Although only the pad 5 is provided, a plurality of pads 5 may be provided. The pad 5 may be formed into a substantially round shape as shown in FIG. 1, or may be formed into a square shape as shown in FIG. The pad is preferably made of, for example, cotton, rubber, polyethylene terephthalate, or the like, but is not limited to this, and may be any elastic material that absorbs vibration or the like caused by collision between the flexible disk and the magnetic head.

The magnetic core 2 is made of a ferrite material as shown in FIG.
It comprises a write core 6 and an erase core 7 for maintaining the magnetic insulation between tracks of information signals recorded on the flexible disk D. The read / write core 6 and the erase core 7 are fused by a non-magnetic material 8 made of, for example, a ceramic or the like, so that magnetic insulation is maintained.

The read / write core 6 is used for reproducing information signals recorded on the flexible disk D and recording information signals and the like on the flexible disk D. A substantially L-shaped magnetic core half 10 arranged on the disk entry side and a substantially I-shaped magnetic core half 11 arranged on the rear side are formed of glass. 12 are joined. The magnetic core halves 10, 11 are made of a magnetic material having excellent soft magnetic properties such as ferrite. And the magnetic gap g ₁ is
It is formed from the medium sliding surface 1a to the glass 12, and the glass 12 allows the pair of magnetic core halves 10,
11.

A coil 13 wound around a coil bobbin (not shown) is attached to the magnetic core half 10 on the disk entry side of the pair of magnetic core halves 10 and 11. A back core 14 made of a magnetic material is attached to the magnetic core half 10 on the disk entry side so as to be magnetically joined to the other magnetic core half 11 to form a closed loop.

When reproducing the information signal recorded on the flexible disk D, the information signal recorded on the flexible disk D is converted into an electric signal by the coil 13 and output. When an information signal or the like is recorded on the flexible disk D, an information signal to be recorded on the flexible disk D is supplied to the coil 13 as an electric signal.

The erasing core 7 is a magnetic core for erasing. Both ends of a track of the flexible disk D formed immediately after recording of information signals and the like on the flexible disk D by the read / write core 6 are performed. This is for performing an erasing process on the portion. This allows
When recording an information signal on the flexible disk D, magnetic insulation between adjacent tracks is ensured even if the position of the magnetic head 1 is slightly shifted.

The erasing core 7 has a medium sliding surface 1a.
A substantially I-shaped magnetic core half 15 disposed on the disk entry side and a substantially L-shaped magnetic core half 16 disposed on the rear side such that a concave portion 9b is formed on the opposite side of FIG. formed by bonding a glass 17 via the magnetic gap g _2. The magnetic core halves 15, 16 are made of a magnetic material having excellent soft magnetic properties such as ferrite. And the magnetic gap g ₂ is
The glass 17 is formed from the medium sliding surface 1a to the glass 17, and the glass 17 allows the pair of magnetic core halves 15,
16, which are joined via a magnetic gap g _2.

As described above, the erase core 7 is connected to the read / write core 6 with respect to the flexible disk D.
Immediately after the recording of the information signal, the erasing process is performed on both sides of the recorded information signal. Therefore, the magnetic gap g of the erase core 7
_2, as shown in FIG. 1, is formed to have a respective gap portion at a position corresponding to both sides of the magnetic gap g ₁ of the read / write core 6.

A coil 18 wound around a coil bobbin is mounted on the rear magnetic core half 16 of the pair of magnetic core halves 15 and 16 constituting the erase core 7. A back core 19 made of a magnetic material is attached to the magnetic core halves 15 and 16 so that the magnetic core halves 15 and the other magnetic core half 16 are magnetically coupled to form a closed loop. And
When an information signal is recorded on the flexible disk D, a signal for erasing is supplied to the coil 18 as an electric signal.

As described above, the read / write core 6 and the erase core 7 are joined in a state where they are magnetically insulated by the nonmagnetic material 8 to form the magnetic core 2. Here, the read / write core 6 and the erase core 7 are arranged such that the read / write core 6 is located on the disk entry side and the erase core 7 is located on the rear side. The magnetic core half 11 on the rear side of the core 6 and the magnetic core half 15 on the disk entry side of the erase core 7 are joined by a nonmagnetic material 8 made of, for example, ceramic. Also, the read / write core 6
The erasing core 7 has a continuous upper surface, thereby forming a smooth medium sliding surface 1 a from the read / write core 6 to the erasing core 7.

First slider 3 and second slider 4
Is made of ceramics having excellent wear resistance and sliding characteristics, such as calcium titanate. Also, the first slider 3
As shown in FIG. 1, the second slider 4 forms the upper surface 4a of the second slider 4 at a position symmetrical with the medium sliding surface 1a formed of a magnetic core or the like.
And joined. The first slider 3 and the second slider 4 are each composed of a medium sliding surface 1 a formed by the magnetic core 2 and the first slider 3 and the second slider 4 in a state of being joined to the magnetic core 2. Upper surface 4a of second slider 4
Are formed at the same height. In the second slider 4, a groove 1c is formed in a direction perpendicular to the sliding direction A so as to divide the medium sliding surface 1a and the upper surface 4a of the second slider 4.

In the magnetic head 1 thus constructed, the pad 5 made of an elastic material is joined to the upper surface 4a of the second slider 4, and the recording / reproduction can be performed by slidingly contacting the flexible disk D. Therefore, recording and reproduction of information signals and the like can be performed while the magnetic core 2 is in sliding contact with the flexible disk D. Therefore, according to the magnetic head 1, it is possible to improve the electromagnetic conversion characteristics at the time of recording and reproduction, and it is possible to cope with a high-density magnetic recording medium and to improve the signal transfer rate. Good recording / reproducing characteristics can be obtained even when the rotation speed of the magnetic recording medium is increased.

Next, a description will be given of a recording / reproducing apparatus 20 for a magnetic recording medium having a magnetic head configured as described above.

As shown in FIGS. 4 and 5, a recording / reproducing apparatus 20 for a magnetic recording medium according to the present embodiment
A spindle motor 22 for rotating the flexible disk D at a predetermined number of revolutions; a pair of head carriages 23a and 23b for supporting the magnetic head 1; and a magnetic head 1 provided at the tip of the head carriages 23a and 23b. Gimbal 24a, 24b to which the
And a magnetic head 1 provided with a pad 5 on an upper surface 4a of the slider 4. The magnetic head 1 shown in FIG.
FIG. 3 is a diagram showing a side view of a magnetic head.

The head carriages 23a and 23b are arranged so as to sandwich the flexible disk D. The head carriages 23a and 23b have magnetic heads 1A and 1A joined to the gimbals 24a and 24b on their opposing surfaces.
B are respectively joined. These head carriages 23a and 23b are arranged so that the surfaces to which the magnetic heads 1 are joined face each other. These head carriages 23a and 23b sandwich the flexible disk D between the magnetic heads 1A and 1B when recording and reproducing information signals on the flexible disk D.
Here, the head carriages 23a and 23b sandwich the flexible disk D between the magnetic core 2 of the first magnetic head 1A and the pad 5 of the second magnetic head 1B, and the magnetic cores 2 of the second magnetic head 1B. The magnetic heads 1A and 1B are provided so as to sandwich the flexible disk D between the magnetic disk 1 and the pad 5 of the first magnetic head 1A.

In the recording / reproducing apparatus 20 for the magnetic recording medium,
When performing recording / reproduction on the flexible disk D, as shown in FIG.
A and the second magnetic head 1B are used. The magnetic heads 1A and 1B shown in FIGS. 4 and 5 are magnetic heads manufactured by sandwiching a magnetic core 2 between a first slider 3 and a second slider 4.

When recording / reproducing an information signal by the recording / reproducing apparatus 20, the first magnetic head 1A and the second magnetic head 1B are sandwiched by the rotatably driven flexible disk D so as to face each other. The medium sliding surface 1a of the magnetic head 1A slides on one surface of the flexible disk D, and the medium sliding surface 1a of the other magnetic head 1B slides on the other surface of the flexible disk D. Let it. Here, the head carriages 23a, 23b
b indicates that the magnetic core 2 of the first magnetic head 1A and the pad 5 of the second magnetic head 1B face each other via the flexible disk D, and the pad 5 of the first magnetic head 1A and the second magnetic head 1B Is disposed so as to face the magnetic core 2 via the flexible disk D. At this time, each of the magnetic heads 1A and 1B is pressed against the flexible disk D with a predetermined pressure. Therefore, each of the magnetic heads 1A and 1B slides with respect to the flexible disk D. Then, while the magnetic heads 1A and 1B are in sliding contact with both surfaces of the flexible disk D, the flexible disk D is driven to rotate,
These magnetic heads 1A and 1B record and reproduce information signals and the like from both sides.

When an information signal is recorded on the flexible disk D, the first magnetic head 1 is mounted on one surface of the flexible disk D while the flexible disk D is rotated at a high speed by the spindle motor 22.
A and the flexible disk D
The second magnetic head 1B is slid in contact with the other surface of the magnetic head 1A, and information signals are recorded on the flexible disk D using the magnetic cores 2 of the magnetic heads 1A and 1B.

At this time, erasure processing is performed by the erase core 7 of the lower magnetic core 2 on both sides of the information signal and the like recorded immediately after the signal is recorded by the read / write core 6 of the magnetic core 2. Apply. As a result, a guard band between adjacent tracks is compensated.

When reproducing an information signal from the flexible disk D, the first magnetic head 1A is mounted on one surface of the flexible disk D while the flexible disk D is rotated at a high speed by the spindle motor 22. And the second magnetic head 1B is slid on the other surface of the flexible disk D,
Information signals are reproduced from the flexible disk D using the magnetic cores 2 of the magnetic heads 1A and 1B. At this time, the information signal recorded on the flexible disk D is reproduced by using only the read / write core 6 without using the erase core 7 among the magnetic cores 2.

The recording / reproducing apparatus 2 for such a magnetic recording medium
Reference numeral 0 denotes recording / reproducing of information signals and the like with the first magnetic head 1A and the second magnetic head 1B provided on the head carriages 23a and 23b with the respective magnetic cores 2 and the pads 5 facing each other, and with the flexible disk D interposed therebetween. Is performed, the magnetic heads 1A and 1B are
It is possible to perform recording and reproduction by sliding contact with. Therefore, in the recording / reproducing apparatus 20, even if the flexible disk D is driven to rotate at a high speed and a large floating force is applied to each of the magnetic heads 1A and 1B, the recording and reproducing apparatus 20 does not fly. Therefore, the recording / reproducing apparatus 20 can improve the electromagnetic conversion characteristics of the magnetic head 1,
It is possible to cope with an increase in the density of the flexible disk D.

Further, the recording / reproducing apparatus 20 is configured such that the first magnetic head 1A and the second magnetic head 1B are brought into contact with the flexible disk D, so that the pads provided on each of the magnetic heads 1A and 1B are used. It is possible to absorb the vibration that the magnetic heads 1A and 1B receive from the flexible disk D. Therefore, this recording / reproducing apparatus can easily attenuate the vibration of the magnetic head 1 and secure a time margin, and exhibit good recording / reproducing characteristics with respect to a flexible disk.

Also, in the present embodiment, the magnetic head 1 manufactured by joining the first slider 3 and the second slider 4 to the side surface of the magnetic core 2 has been described. The present invention is also applicable to a so-called embedded magnetic head manufactured by embedding a magnetic core into a hole formed in an integrated slider.

[0049]

As described above in detail, the magnetic head according to the present invention includes the elastic material which is slidably contacted with the magnetic recording medium on the medium sliding surface. The contact does not damage the magnetic recording medium or shorten the life of the magnetic head itself. Therefore, the magnetic head can record and reproduce information signals while sliding on the magnetic recording medium. Therefore, according to this magnetic head, even when the magnetic recording medium is rotated at high speed during recording and reproduction, there is no influence of the air flow formed between the magnetic recording media, so that the magnetic head does not fly. And stable hitting characteristics. Therefore, this magnetic head can improve the electromagnetic conversion characteristics and can correspond to a high-density magnetic recording medium. Further, according to this magnetic head, it is possible to press the elastic material against the magnetic recording medium at the time of recording and reproduction, and it is possible to attenuate the vibration of the magnetic head. Therefore, according to this magnetic head, it is possible to easily secure a time margin at the time of recording and reproduction, and it is possible to improve recording and reproduction characteristics.

In the recording / reproducing apparatus for a magnetic recording medium according to the present invention, information signals are recorded / reproduced by sandwiching the magnetic recording medium with a pair of magnetic heads having an elastic material on a sliding surface of the medium. The sliding contact does not cause damage to the magnetic recording medium or shorten the life of the magnetic head. Therefore, this recording / reproducing apparatus can record / reproduce an information signal while bringing the magnetic head into contact with the magnetic recording medium. Therefore, according to this recording / reproducing apparatus, there is no influence of the airflow formed between the magnetic head and the magnetic recording medium. Therefore, this recording / reproducing apparatus does not cause the magnetic head to fly even when the magnetic recording medium is rotated at a high speed during recording / reproducing, and exhibits stable contact characteristics between the magnetic head and the magnetic recording medium. . Therefore, this recording / reproducing apparatus can improve the electromagnetic conversion characteristics of the magnetic head, and can cope with the increase in the density of the magnetic recording medium.

The recording / reproducing apparatus has a pair of magnetic heads brought into contact with a magnetic recording medium,
The elastic material provided in each magnetic head can absorb the vibration that the magnetic head receives from the magnetic recording medium. Therefore, this recording / reproducing apparatus can easily attenuate the vibration of the magnetic head, secure a time margin, and exhibit good recording / reproducing characteristics with respect to the magnetic recording medium.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of a magnetic head according to the present invention.

FIG. 2 is an exploded perspective view showing another example of the magnetic head.

FIG. 3 is a side view illustrating an example of a magnetic core.

FIG. 4 is a perspective view showing an example of a recording / reproducing apparatus for a magnetic recording medium according to the present invention.

FIG. 5 is a diagram showing how the recording / reproducing apparatus for the magnetic recording medium records and reproduces information signals on the magnetic recording medium.

[Explanation of symbols]

1 magnetic head, 2 magnetic core, 3 first slider,
4 Second slider, 5 pads, 20 Magnetic recording medium recording / reproducing apparatus

Claims (3)

[Claims] When recording and reproducing an information signal while holding a medium sliding surface in a substantially contact state with a main surface of a magnetic recording medium,
In a magnetic head arranged to sandwich a magnetic recording medium and recording and reproducing information signals from both sides of the magnetic recording medium, at least one or more slidingly contacting the medium sliding surface with the main surface of the magnetic recording medium A magnetic head provided with an elastic material. 2. A magnetic core, which slides on the magnetic recording medium and records and reproduces information signals, on the medium sliding surface, and the elastic material is positioned substantially symmetrically in a direction perpendicular to the sliding direction. 2. The magnetic head according to claim 1, wherein the magnetic head is arranged so that: 3. A recording / reproducing apparatus for a magnetic recording medium for recording / reproducing an information signal from both sides of a magnetic recording medium by a magnetic head when recording / reproducing an information signal to / from the magnetic recording medium, comprising: A recording / reproducing apparatus for a magnetic recording medium, wherein recording / reproducing of an information signal is performed by sandwiching the magnetic recording medium with a pair of magnetic heads having at least one elastic material.