JPH0863562A - Magnetic recording medium - Google Patents

Abstract

PURPOSE: To enable normal magnetic recording and information reading in a noncontact state by detecting the oscillation of the magnetostriction vibration resonating point peak of an amorphous magnetostriction ribbon in a superimposed A.C. magnetic field and reading information in a noncontact state. CONSTITUTION: This medium is basically constituted by combinating a magnetic recording part 11 consisting of a semi-hard magnetic material, the amorphous magnetostriction ribbon 12 and a plastic case 13 being a supporting body for supporting a medium. At this time, the magnetic recording part 11 consisting of the semi-hard magnetic material generates a bias magnetic field in accordance with a recorded magnetic pattern. The amorphous magnetostriction ribbon 12 has a function as at least an originating equipment. When the bias magnetic field is impressed by the magnetic recording part 11, the A.C. magnetic field is superimposed to generate the magnetostriction vibration of the amorphous magnetostriction ribbon 12 and the originating of the magnetostriction vibration high-degree resonating point peak of the amorphous magnetostriction ribbon 12 in the superimposed A.C. magnetic field is detected, so that information is read in noncontact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording medium,
In particular, the present invention relates to a magnetic recording medium having a recording unit capable of ordinary magnetic recording and simultaneously capable of reading information in a non-contact state.

[0002]

2. Description of the Related Art A magnetic recording medium provided with a magnetic recording portion using a magnetic recording material is widely used in the form of, for example, a card, a ticket, a commuter pass, a passbook, and a security. In this magnetic recording medium, magnetic recording / reproduction is performed by using a magnetic head, an MR sensor, or the like in the magnetic recording portion, and information is recorded on them by the magnetization direction of the magnetic substance.

However, these magnetic recording media are
The above-mentioned contact type or super close proximity type (for example, 0.1 mm
Since it is necessary to use the magnetic head, MR sensor, etc. described below, recording / reproducing means for recording on the magnetic recording medium due to dust or dirt (dust or the like coming out of the magnetic recording medium by scanning of the recording / reproducing means). -Regeneration characteristics may deteriorate, and cleaning is required depending on the degree of dirt.

In a system such as a ticket, a commuter pass, a pass ticket, or an ID card, which reads information from a magnetic recording medium for verification or determination, a large number of magnetic recording media are used.
High-speed and accurate processing is required, but in the above method for reading magnetic information on the magnetic recording medium, the processing speed is high because the structure is such that the user inserts the magnetic recording medium into the reader / writer of the system. There is also a limit. In addition, if it is used frequently, the occurrence of an error due to the above-mentioned stain also becomes a problem. Furthermore, when using a hand reader,
Since some users are not accustomed to it, an error may occur depending on the speed at which the magnetic recording medium is passed through the hand reader and the inclination of the magnetic recording medium.

That is, the emergence of an information medium capable of accurately and easily reading information is required.

However, at present, as information media satisfying such a condition, non-contact type information media utilizing electromagnetic waves, radio waves, and magnetism for inputting and outputting data are mainly used, and these use an IC memory as a recording means. It has many drawbacks such that it is used in large numbers, its structure is complicated, and it is expensive.

In addition to these, for example, WO92 /
As disclosed in Japanese Unexamined Patent Publication No. 12402, a semi-hard magnetic material used in a magnetic recording medium and an amorphous magnetostrictive ribbon are combined, and a magnetic pattern recorded in the semi-hard magnetic material is used as a bias magnetic field. A non-contact readable magnetic recording medium has been developed which uses the peak of the resonance point of the amorphous magnetostrictive ribbon detected in 1.

This information recording medium, as shown in FIG.
It is composed of an amorphous magnetostrictive ribbon 41 having at least a function as an oscillator, and a magnetic recording body 42 made of a semi-hard magnetic material that generates a bias magnetic field.

As shown in FIG. 7, when the bias magnetic field is applied along the magnetostrictive curve of the amorphous magnetostrictive ribbon 41 and the AC magnetic field 51 is superposed, the amorphous magnetostrictive ribbon 41 has a magnetostrictive curve as shown in FIG. Along with that, mechanical vibration (hereinafter referred to as magnetostrictive vibration) is generated. The applied AC magnetic field 51 is applied to the amorphous magnetostrictive ribbon 4
The transmitted signal 52 from 1 is received by the antenna. The transmission signal 52 is the recorded information on the information recording medium, and the information can be read without contact (about 1).
It is possible even at a distance of m). Then, normally, in information communication, a resonance point depending on the shape of the amorphous magnetostrictive ribbon 41 is used to obtain a large output.

Further, the amorphous magnetostrictive ribbon 41 is characterized in that an output can be obtained up to a peak of a higher resonance point. However, when only 1-bit data is required like a shoplifting prevention tag, the first peak is generated. If you want to use single mode like
The data to be recorded is recorded on the magnetic recording body 42 in the longitudinal direction,
Due to the leakage magnetic flux from this magnetic recording portion, an AC magnetic field 5
The higher resonance point generated by the application of 1 is controlled. That is, the high-order resonance point is set according to the state of the leakage magnetic flux due to the magnetic recording.

That is, as shown in FIG.
Since the order of the resonance point peak to be received differs depending on the magnetic pattern of the magnetic recording portion written in 2, it is possible to record multi-bit data. In FIG. 8, reference numeral 61 denotes an output waveform by magnetic recording of the A pattern, 62
Shows the output waveforms of the B pattern magnetic recording.

[0012]

However, in the latter information recording medium using the magnetostrictive material, the information can be read in a non-contact state, the reading accuracy is high, and the drawbacks of the former magnetic recording medium are covered. However, the amount of information is extremely small, and it is difficult to use it for the purpose of using it in a system for reading or verifying or determining the recorded information of the magnetic recording medium as described above. The use of such an information recording medium is greatly restricted.

The present invention has been made to solve the above-mentioned problems, and enables ordinary magnetic recording.
An object of the present invention is to provide a magnetic recording medium having a recording means capable of reading information in a non-contact state at the same time.

[0014]

In order to achieve the above object, according to the present invention, a magnetic recording portion fixed to a support and made of a semi-hard magnetic material, and magnetic recording in a vibrating state not fixed to the support. And an amorphous magnetostrictive ribbon having at least a function as a transmitter, the magnetic recording section having a plurality of tracks, one of which is a magnetostrictive vibration resonance of the amorphous magnetostrictive ribbon. A magnetic recording track that generates a bias magnetic field for controlling the point peak to have a higher resonance frequency.Other tracks are magnetic recording tracks that can be used for normal magnetic recording, and along the magnetostriction curve of the amorphous magnetostrictive ribbon. AC magnetic field is superposed when a bias magnetic field is applied by mechanical bias of the amorphous magnetostrictive ribbon (magnetostrictive vibration)
Is generated and the transmission of the magnetostrictive vibration resonance point peak of the amorphous magnetostrictive ribbon in the superimposed AC magnetic field is detected to read the information in a non-contact manner.

Here, in particular, the magnetostrictive vibration resonance point peak of the amorphous magnetostrictive ribbon is a high order resonance point peak of any of the second to ninth orders.

Further, the width of the magnetic recording track for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon is influenced by the leakage magnetic flux from other magnetic recording tracks to the transmission of the resonance point peak of the amorphous magnetostrictive ribbon. The width is set so that it is not given.

Further, the magnetic information of the magnetic recording track for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon is converted into digital data and magnetically recorded on another magnetic recording track capable of magnetic reproduction.

[0018]

Therefore, in the magnetic recording medium of the present invention, the magnetic recording portion has a plurality of tracks, and one of the tracks is such that the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon has a higher resonance frequency. By using magnetic recording tracks for control and other tracks as magnetic recording tracks that can perform normal magnetic recording, the recording of information on the plurality of tracks is aimed at high-speed and always stable reading processing. The information to be recorded is recorded by utilizing the magnetostriction vibration resonance point peak due to the amorphous magnetostrictive ribbon, and a large amount of general-purpose information is recorded by using ordinary magnetic recording, which can be a so-called multi-type information recording medium. Ordinary magnetic recording is possible, and at the same time, information can be read in a non-contact state.

That is, for example, the information recording area used when passing through a gate is a part of the entire information recording area, so that the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon has a higher resonance frequency. By writing magnetic data on the magnetic recording track for control and controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon, necessary information can be read in a non-contact state.

Further, the width of the magnetic recording track for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon affects the transmission of the peak of the resonance point of the amorphous magnetostrictive ribbon due to the leakage magnetic flux from other magnetic recording tracks. By setting the width to the extent that there is no leakage magnetic flux from other magnetic recording tracks will affect the transmission of the resonance point peak of the amorphous magnetostrictive ribbon,
Information reading accuracy can be increased.

Further, the magnetic information of the magnetic recording track for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon is converted into digital data and magnetically recorded on another magnetic recording track which can be magnetically reproduced. Since the data can be collated by reading with a magnetic sensor, security can be improved.

As described above, the information can be read in a non-contact state, the reading accuracy is high, the above-mentioned drawbacks of the magnetic recording medium can be solved, and at the same time, the amount of information is increased. It is possible to easily use for the purpose of use in the above-described system for making determination without any limitation.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view showing an example of the structure of a magnetic recording medium for a card according to the present invention.

That is, as shown in FIG. 1, the magnetic recording medium of this embodiment has a magnetic recording portion 1 made of a semi-hard magnetic material.
1 and the amorphous magnetostrictive ribbon 12 and a plastic case 13 which is a support for supporting the medium are basically configured.

Here, the magnetic recording section 11 made of a semi-hard magnetic material is fixed so as to close the opening of the space provided in the plastic case 13 as shown in the figure, and it is fixed according to the recorded magnetic pattern. To generate a bias magnetic field, the detailed configuration of which will be described later.

The amorphous magnetostrictive ribbon 12 is arranged in a space provided in the plastic case 13 as shown in the figure in a non-fixed, vibrating state, and has at least a function as a transmitter.

Then, when a bias magnetic field is applied by the magnetic recording unit 11, the alternating magnetic field is superposed to generate magnetostrictive vibration of the amorphous magnetostrictive ribbon 12, and the amorphous magnetostrictive ribbon 12 in the superposed alternating magnetic field is generated. Information is read in a non-contact manner by detecting transmission of magnetostrictive vibration higher resonance peaks.

The magnetic recording portion 11 made of a semi-hard magnetic material is an important element in the present invention. And as this semi-hard magnetic material, for example, a Cu-Ni-Fe alloy, an Fe-Cr-Co alloy, an Fe-Co-V alloy, an Fe
A plate-shaped magnetic alloy such as a -Ni-Cr alloy, a Fe-Mn alloy, or a Co-Pt alloy can be used.

Rare earth-cobalt magnets such as R-Co5, Ba-ferrite magnets, Sr-ferrite magnets, alnico magnets, etc. can also be used.

Further, as a matter of course, magnetic powders such as those used for magnetic tapes, for example, Ba-ferrite, Sr-ferrite powder, etc. dispersed in a binder to form a paint are coated on a plastic substrate. It is also possible to use a material or a material obtained by vapor deposition of a magnetic material.

In the present invention, the magnetic recording portion 11 made of a semi-hard magnetic material preferably has a coercive force of 2000 Oe or more in order to ensure recording stability.

On the other hand, the amorphous magnetostrictive ribbon 12 has a high magnetic permeability and causes magnetostriction, for example, Fe-Ni-M.
o-B system, Fe-B-Si system, Fe-B-Si-C system,
An alloy of Fe-Co-B-Si system or the like is formed into a ribbon having a thickness of 10 to 50 μm as an amorphous material by the ultraquenching method. Here, in order to improve the detection sensitivity of the transmitted signal, post-processing such as annealing in a magnetic field may be performed.

Next, FIG. 2 shows the magnetic recording unit 1 in FIG.
It is a top view which shows an example of the pattern of 1. Note that FIG. 2 schematically shows a state in which the magnetic recording portion 11 and the amorphous magnetostrictive ribbon 12 in FIG. 1 are superposed.

In FIG. 2, the magnetic recording portion 11 has a plurality of tracks, which are one track 11A and two tracks 11B formed on both sides of the track 11A.

The track 11A is a magnetic recording track formed so as to generate a bias magnetic field for controlling transmission of the higher-order resonance point peak of the magnetostrictive vibration of the amorphous magnetostrictive ribbon 12.

The other track 11B is a magnetic recording track formed so that normal magnetic recording can be performed.

That is, information intended for high-speed and always stable reading processing (magnetic information read in a non-contact state)
Is recorded on the magnetic recording track 11A by utilizing the peak of the magnetostrictive vibration resonance point by the amorphous magnetostrictive ribbon 12, and a large amount of general-purpose information (magnetic information read by the proximity magnetic sensor).
Is a magnetic recording track 11B using ordinary magnetic recording.
The information recording medium is a multi-type information recording medium.

Here, as the magnetostrictive vibration high-order resonance point peak of the amorphous magnetostrictive ribbon 12, any one of the second-order to the ninth-order higher-order resonance point is used.

Further, the width of the magnetic recording track 11A for controlling the peak of the higher-order resonance point of the magnetostrictive vibration of the amorphous magnetostrictive ribbon 12 is the width of the other magnetic recording tracks 11B.
The leakage magnetic flux is set to a width that does not affect the transmission of the resonance point peak of the amorphous magnetostrictive ribbon 12.

Further, the magnetic information of the magnetic recording track 11A for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon 12 is converted into digital data and further encrypted, and the other magnetic recording track 1 capable of magnetic reproduction.
1B is magnetically recorded.

In FIG. 2, the arrow indicates the magnetization direction, and 11C indicates the portion showing the maximum leakage magnetic flux.

Next, an example of an actually manufactured magnetic recording medium of this embodiment will be described.

That is, first, as the semi-hard magnetic material of the magnetic recording portion 11, 90 × Ba-ferrite was kneaded.
A 15 × 0.8 mm plastic magnet was used. Also,
As the magnetostrictive amorphous ribbon 12, Metglas
2826MB (made by Allied) 80 x 12 x 0.3 m
A piece cut out to a size of m was used. Then, using a support base made of ABS resin as the plastic case 13, a magnetic recording medium having the structure shown in FIG. 1 was manufactured.

Next, the magnetic recording track 11 in FIG.
In A, a magnetic pattern for detecting the fifth resonance point peak of the amorphous magnetostrictive ribbon 12 was magnetized with a permanent magnet material. Then, with a ring type magnetic head, track width 2 mm
Magnetic recording was recorded on the magnetic recording track 11B.

FIG. 3 is a diagram showing an example of an output waveform when reading is performed on such a magnetic recording medium.

That is, first, when the information of the magnetic recording track 11A was read as a resonance point peak of the amorphous magnetostrictive ribbon 12 in an alternating magnetic field, a fifth harmonic peak of 129 kHz was detected as shown in FIG. 3 (a). did it.

Similarly, when the information of the magnetic recording track 11A is read by the proximity type magnetic sensor, FIG.
As shown in FIG.

Further, when the information on the magnetic recording track 11B (normal magnetic recording) was read by the proximity magnetic sensor, the information could be read without any problem as shown in FIG. 3 (c).

In the above, the information on the magnetic recording track 11A is transferred to the amorphous magnetostrictive ribbon 12 in an alternating magnetic field.
Read as the resonance point peak of
As a device for detecting the higher harmonic peak, for example, a reading device as shown in FIG. 4 can be used.

That is, in FIG. 4, 30 is a magnetic recording medium (card) of this embodiment, 32 is a transmitting coil, 34 is a receiving coil, 36 is a power supply device, 38 is a control device, and 40 is a decoder. .

Here, the transmitting coil 32 and the receiving coil 34
Are arranged so as to face each other, and an AC magnetic field is applied from a transmission coil 32 driven by a power supply device 36 to the magnetic recording medium 30 passing between them, and the magnetic recording medium 3
The transmission signal from 0 is received by the receiving coil 24.

The power supply device 36 is controlled by the control device 38 to excite the transmission coil 32.

Further, the decoder 40 is controlled by the control device 38 so that the signal from the receiving coil 34 is restored to the original signal and decoded.

As described above, in this embodiment, the magnetic recording portion 11 is fixed to the plastic case 13 as a support and is made of a semi-hard magnetic material, and the vibration is not fixed to the plastic case 13 as a support. And an amorphous magnetostrictive ribbon 12 disposed near the magnetic recording portion 11 and having at least a function as an oscillator. The magnetic recording portion 11 has a plurality of tracks 11A and 11A.
One track 11A having B is a magnetic recording track for generating a bias magnetic field for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon 12 to have a higher resonance frequency, and the other track 11A. 11
B is a magnetic recording track capable of ordinary magnetic recording, and when a bias magnetic field is applied along the magnetostrictive curve of the amorphous magnetostrictive ribbon 12, an alternating magnetic field is superimposed to generate magnetostrictive vibration of the amorphous magnetostrictive ribbon 12, and Information is read in a non-contact manner by detecting the transmission of the magnetostrictive vibration resonance point peak of the amorphous magnetostrictive ribbon 12 in the superimposed AC magnetic field.

Therefore, the plurality of tracks 11A, 11
The information recorded in B is recorded by using the peak of the magnetostriction resonance point of the amorphous magnetostrictive ribbon 12 for the purpose of high-speed and always stable reading processing, and the general magnetic recording is used for a lot of general-purpose information. Since it can be used as a so-called multi-type information recording medium for recording, normal magnetic recording can be performed and information can be read in a non-contact state at the same time.

That is, since the information recording area used when passing through a gate is a part of the entire information recording area, the amorphous magnetostrictive ribbon 12 is used.
The magnetic data is written in the magnetic recording track 11A for controlling so that the peak of the magnetostrictive vibration resonance point of FIG.
Since the peak of the magnetostrictive vibration resonance point is controlled, it is possible to read necessary information in a non-contact state.

Further, the width of the magnetic recording track 11A for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon 12 is set so that the leakage magnetic flux from the other magnetic recording track 11B transmits the resonance point peak of the amorphous magnetostrictive ribbon 12. Since the width is set so as not to affect the magnetic field, the leakage magnetic flux from the other magnetic recording track 11B does not affect the transmission of the resonance point peak of the amorphous magnetostrictive ribbon 12. It is possible to increase the reading accuracy of.

Further, the magnetic information of the magnetic recording track 11A for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon 12 is converted into digital data and further encrypted, and the other magnetic recording track 1 capable of magnetic reproduction.
Since the data is magnetically recorded in 1B, the proximity magnetic sensor can read the data and collate the data, so that it is possible to improve security.

As described above, the information can be read in a non-contact state, the reading accuracy is high, and the above-mentioned drawbacks of the conventional magnetic recording medium are solved. At the same time, the amount of information is increased, and the recorded information is read and verified. Alternatively, it can be easily used for any purpose intended for use in the above-described system for making a determination without any limitation.

The present invention is not limited to the above embodiment, but can be implemented in the same manner as described below.

In the embodiment shown in FIG. 1, the case where the present invention is applied to the magnetic recording medium for cards has been described.
The present invention is not limited to this, and the present invention can be similarly applied to other magnetic recording media.

FIG. 5 is a sectional view showing an example of the structure of a sandwich type magnetic recording medium for, eg, a tag according to the present invention. The same elements as those in FIG. 1 are designated by the same reference numerals.

That is, in the magnetic recording medium of the present embodiment, as shown in FIG. 5, the amorphous magnetostrictive ribbon 12 is arranged in an unfixed and vibrating state in the space provided in the plastic case 13 as shown in FIG. Further, on the upper part of the plastic case 13, as shown in the figure, the semi-hard magnetic material 1
1 is fixed.

Also in the magnetic recording medium of this embodiment, information can be read in the same manner as in the case of the magnetic recording medium of the embodiment of FIG. 1, and the same effect as in the case of the above embodiment can be obtained. Is.

[0066]

As described above, according to the present invention, a magnetic recording portion fixed to a support and made of a semi-hard magnetic material and a magnetic recording portion not fixed to the support and arranged in the vicinity of the magnetic recording portion in a vibrating state. And an amorphous magnetostrictive ribbon having at least a function as an oscillator, wherein the magnetic recording section has a plurality of tracks, one of which has a higher magnetostrictive vibration resonance point peak of the amorphous magnetostrictive ribbon. A magnetic recording track that generates a bias magnetic field for controlling the resonance frequency is used.Other tracks are magnetic recording tracks that can perform normal magnetic recording, and a bias magnetic field is applied along the magnetostriction curve of the amorphous magnetostrictive ribbon. AC magnetic field is superposed when generated, and mechanical vibration (magnetostrictive vibration) of the amorphous magnetostrictive ribbon is generated, and the superposed AC magnetic field is generated. Since the information is read in a non-contact manner by detecting the transmission of the magnetostrictive vibration resonance point peak of the amorphous magnetostrictive ribbon inside, normal magnetic recording is possible, and at the same time the information is read in a non-contact state. It is possible to provide a magnetic recording medium having a recording means capable of performing the above.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a magnetic recording medium according to the present invention.

FIG. 2 is a plan view showing a configuration example of a magnetic recording unit in the magnetic recording medium of the example.

FIG. 3 is a diagram showing an example of an output waveform when reading information from the magnetic recording medium of the same embodiment.

FIG. 4 is a schematic diagram showing a configuration example of a reading device for reading information on the magnetic recording medium of the embodiment.

FIG. 5 is a sectional view showing another embodiment of the magnetic recording medium according to the present invention.

FIG. 6 is a schematic diagram showing a configuration example of a non-contact readable magnetic recording medium that employs a conventional magnetostrictive vibration high-order resonance point peak reading method.

FIG. 7 is a principle diagram for explaining an outline of a conventional magnetostrictive vibration high-order resonance point peak reading method.

FIG. 8 is a diagram showing an example of an output waveform in a conventional magnetostrictive vibration high-order resonance point peak reading method.

[Explanation of symbols]

11 ... Magnetic recording part, 12 ... Amorphous magnetostrictive ribbon, 1
3 ... Plastic case, 11A ... Magnetic recording track for controlling magnetostriction vibration, 11B ... Magnetic recording track read by proximity magnetic sensor, 30 ... Magnetic recording medium (card), 32 ... Transmission coil, 34 ... Reception coil, 36 ... Power supply Device, 38 ... Control device, 40 ... Decoder, 41 ... Amorphous magnetostrictive ribbon, 42 ... Semi-hard magnetic material, 51 ... AC magnetic field, 52 ... Oscillation signal, 61 ... Output waveform by magnetic recording of A pattern, 62 ... B pattern Output waveform by magnetic recording.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Ken Namikawa 4-33-9 Kugahara, Ota-ku, Tokyo

Claims (4)

[Claims] 1. A magnetic recording portion fixed to a support and made of a semi-hard magnetic material, and a magnetic recording portion which is not fixed to the support and is disposed near the magnetic recording portion in a vibrating state, and at least functions as a transmitter. Amorphous magnetostrictive ribbon having, wherein the magnetic recording portion has a plurality of tracks, one of which is controlled so that the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon has a higher resonance frequency. A magnetic recording track for generating a bias magnetic field for performing, and other tracks are magnetic recording tracks capable of ordinary magnetic recording, and an alternating magnetic field is generated when a bias magnetic field is applied along the magnetostrictive curve of the amorphous magnetostrictive ribbon. When superposed, mechanical vibration (magnetostrictive vibration) of the amorphous magnetostrictive ribbon is generated, and the above-mentioned alternating current in the superposed AC magnetic field is generated. The magnetic recording medium characterized in that so as to read information in a non-contact by detecting the magnetostrictive vibration transmitting resonance point peak of Rufasu magnetostrictive ribbon. 2. The magnetic recording medium according to claim 1, wherein the magnetostrictive vibration resonance point peak of the amorphous magnetostrictive ribbon is a high order resonance point peak of any of secondary to ninth orders. . 3. The width of a magnetic recording track for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon, and the leakage flux from other magnetic recording tracks influences the transmission of the peak of the resonance point of the amorphous magnetostrictive ribbon. The magnetic recording medium according to claim 1, wherein the width is set so as not to be applied. 4. The magnetic information of the magnetic recording track for controlling the peak of the magnetostrictive vibration resonance point of the amorphous magnetostrictive ribbon is converted into digital data and magnetically recorded on another magnetic recording track capable of magnetic reproduction. The magnetic recording medium according to claim 1, wherein the magnetic recording medium is a magnetic recording medium.