JP2002183948A - Method and device for magnetic transfer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform magnetic transfer with high production efficiency by improving the conveying and aligning of a slave medium when magnetic transfer is carried out by adhering a master carrier carrying transfer information to the slave medium, and applying a transfer magnetic field. SOLUTION: The magnetic transfer device is provided with an adhering base 7 for positioning and holding the master carrier 3, a slave holder 6 for positioning, holding and conveying the slave medium 2 to an adhering position, a pressuring means 4 for adhering the slave medium 2 and the master carrier 3 to each other, a positioning mechanism 8 for aligning the adhering base 7 with the salve holder 6, and a magnetic field applying means 5 for applying a transfer magnetic field. The slave medium 2 is conveyed to an adhering position with the master carrier 3 while it is positioned and held on the slave holder 6, and the master carrier 3 and the slave medium 2 are aligned with each other through the slave holder 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a magnetic transfer method and a magnetic transfer apparatus for magnetically transferring information carried on a master carrier to a slave medium.

[0002]

2. Description of the Related Art Magnetic transfer is performed by applying a transfer magnetic field in a state in which a master carrier carrying transfer information in a fine uneven pattern of a magnetic material and a magnetic recording medium as a slave medium to be transferred are in close contact with each other. The magnetic pattern corresponding to the information (for example, a servo signal) carried on the carrier is transferred and recorded on the recording surface of the slave medium.

The magnetic transfer method is disclosed in, for example, JP-A-63-183623, JP-A-10-40544, and JP-A-10-269566.

[0004]

In the magnetic transfer as described above, the magnetic transfer is usually performed sequentially on a plurality of slave media by one master carrier. And set
The transfer magnetic field is applied after the slave medium is conveyed to the contact position with the master carrier and both are brought into close contact with each other, and the transfer of the slave medium to the contact position and the discharge of the slave medium after the transfer are performed on the recording surface. This is an operation that requires attention in preventing damage to the surface.

When the signal to be transferred is a servo signal, when the master carrier and the slave medium are brought into close contact with each other,
It is important to suppress the relative displacement between the two and reduce the eccentricity. If the eccentricity is large, the recording / reproducing system cannot follow the track of the slave medium and does not function as a recording medium. In order to perform the alignment between the master carrier and the slave medium, a precise reference point is required for each, but in the method of directly transporting the slave medium,
It was difficult to set a reference, and it was difficult to obtain accurate relative position accuracy efficiently.

Further, at the time of magnetic transfer, since the slave medium and the master carrier are brought into close contact with each other, air on the contact surfaces of both may escape, and the slave medium after the transfer may be adsorbed to the master carrier. Due to the large suction force, direct conveyance of the slave medium may be damaged at the time of peeling from the master carrier and takes time, and the conveyance speed cannot be increased. Is an obstacle.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and improves the transfer and alignment of the slave medium when the master carrier and the slave medium are brought into close contact with each other to perform magnetic transfer. It is an object of the present invention to provide a magnetic transfer method and a magnetic transfer device that can be performed.

[0008]

A magnetic transfer method according to the present invention is directed to a magnetic transfer method in which a master carrier carrying transfer information and a slave medium are brought into close contact with each other and a transfer magnetic field is applied to perform magnetic transfer. Is transported to a position in close contact with the master carrier in a state held by the slave holder.

At this time, it is preferable that the slave medium is positioned and held in the slave holder, and the positioning of the master medium and the slave medium during magnetic transfer is performed via the slave holder. In addition, a method of directly aligning the master carrier and the slave medium at the time of magnetic transfer, a method of directly performing alignment between the master carrier and the slave medium, and a method of directly performing positioning and holding of the master carrier and the slave medium can be adopted.

In the magnetic transfer apparatus of the present invention, in a magnetic transfer apparatus in which a master carrier carrying transfer information is brought into close contact with a slave medium and a transfer magnetic field is applied to perform magnetic transfer, the master carrier is positioned and held. A contact base, a slave holder for positioning and holding the slave medium and transporting the slave medium to the contact position, pressure means for bringing the slave medium held by the slave holder into close contact with the master carrier, and a position between the contact base and the slave holder. It is characterized by comprising a positioning mechanism for performing alignment, and a magnetic field applying means for applying a transfer magnetic field to a slave medium and a master carrier that are in close contact with each other.

It is preferable that the positioning mechanism is provided with a plurality of positioning pins or positioning holes on a close contact base, a plurality of positioning holes or positioning pins on a slave holder, and performing positioning by engagement of both. At this time, it is preferable that the positioning hole is provided to be larger than the positioning pin, and the positioning pin and the positioning hole are partially engaged with each other to perform positioning, thereby facilitating engagement and disengagement.

It is preferable that the pressing means presses only the slave medium and does not apply a force to the slave holder.

As the magnetic field applying means, an electromagnet device or a permanent magnet device is employed, and a transfer magnetic field is applied from one or both sides of the contact portion between the master carrier and the slave medium, and the master carrier and the slave medium are brought into close contact with each other. The magnetic transfer is performed by relatively rotating the application magnetic field.

In the magnetic transfer, first, the slave medium is subjected to initial magnetization in which DC magnetization is performed in the track direction, and the master medium having a magnetic layer formed in a fine uneven pattern corresponding to information to be transferred with the slave medium. The magnetic transfer is preferably performed by applying a transfer magnetic field in a direction substantially opposite to the initial DC magnetization direction of the surface of the slave medium by bringing the magnetic transfer into close contact. The information is preferably a servo signal.

[0015]

According to the present invention as described above, the slave medium is conveyed to the close contact position with the master carrier while the slave medium is held in the slave holder, so that the slave medium is carried into the close contact position and after the transfer. The medium can be easily carried out, and the recording surface can be prevented from being damaged. Furthermore, with regard to the peeling of the slave medium after magnetic transfer, the peeling force is increased by applying a force to the slave holder, and the slave medium adsorbed on the master carrier can be peeled off instantaneously, increasing the transport speed. Can improve production efficiency.

In addition, it becomes easy to set a reference for positioning between the master carrier and the slave medium during magnetic transfer,
Accurate relative position accuracy can be obtained efficiently, eccentricity between the two can be reduced, magnetic transfer with good position accuracy and stable quality can be performed, and reliability can be improved. In particular, when the slave medium is positioned and held in the slave holder, and the master medium and the slave medium are aligned during magnetic transfer via the slave holder, accurate positioning can be easily performed, and the production efficiency can be improved.

According to the apparatus of the present invention, a contact base for positioning and holding the master carrier, a slave holder for positioning and holding the slave medium and transporting the slave medium to the contact position,
By providing a pressing means for bringing the slave medium into close contact with the master carrier, a positioning mechanism for performing positioning between the close contact base and the slave holder, and a magnetic field applying means for applying a transfer magnetic field, the accuracy as described above is provided. Thus, magnetic transfer with high production efficiency can be easily realized.

If the positioning mechanism performs positioning by engaging a plurality of positioning pins or positioning holes provided on the close contact base with a plurality of positioning holes or positioning pins provided on the slave holder, the slave medium and the master carrier are aligned. Can be easily and reliably performed.
In particular, in the case where the positioning holes are provided larger than the positioning pins and the positioning is performed by partially engaging the positioning holes, the engagement and disengagement is easy and the service life can be extended.

[0019]

Embodiments of the present invention will be described below in detail. FIG. 1 is a perspective view of a main part showing a transfer state of a magnetic transfer apparatus that performs a magnetic transfer method according to one embodiment of the present invention. 2 is a cross-sectional view of a main part in a state before contact, FIG. 3 is a cross-sectional view of a main part in a contact state, and FIG. 4 is a plan view showing a positioning mechanism. FIG. 5 is a diagram showing a basic process of magnetic transfer. Each drawing is a schematic diagram, and the thickness and the like are shown in proportions different from actual dimensions.

The magnetic transfer apparatus 1 shown in FIGS. 1 to 3 performs one-sided sequential transfer, and includes a contact base 7 (rotary table) for positioning and holding a master carrier 3 carrying transfer information corresponding to servo signals and the like. A slave holder 6 for positioning and holding the slave medium 2 (magnetic recording medium) and transporting the slave medium 2 to a close contact position, and pressing means 4 (press mechanism) for bringing the slave medium 2 held by the slave holder 6 into close contact with the master carrier 3 And a positioning mechanism 8 for positioning the contact base 7 and the slave holder 6, and a magnetic field applying unit 5 for applying a transfer magnetic field to the slave medium 2 and the master carrier 3 in close contact.

In the magnetic transfer method, the slave medium 2 after the initial DC magnetization described later is positioned and held on the slave holder 6 and conveyed to the close contact position, and the magnetic recording surface of the slave medium 2 is positioned on the close contact base 7. Positioning of both is performed by a positioning mechanism 8 via a slave holder 6 so as to be brought into contact with the held information carrying surface of the master carrier 3, and the two are brought into close contact with a predetermined pressure by a pressing means 4. While rotating the slave medium 2 and the master carrier 3 in close contact with each other, a transfer magnetic field is applied by the magnetic field applying means 5 to transfer and record a magnetization pattern such as a servo signal.

As shown in FIG. 2, the slave medium 2 is a rigid disk-shaped magnetic recording medium such as a hard disk having magnetic recording layers formed on both sides. The slave holder 6 for holding the slave medium 2 is formed in an annular shape. An inner hole 61 having a larger diameter than the outer diameter of the master carrier 3 is opened at the center, and the outer diameter of the slave medium 2 is formed at the lower end of the inner hole 61. Is formed, and the supporting step 62 is formed.
Supports the lower surface of the outer peripheral surface of the slave medium 2 placed from above, and holds the center position of the slave medium 2 at the reference position by positioning the outer peripheral surface. The thickness of the supporting step 62 is smaller than the height of the master carrier 3 (thickness of the master carrier 3) projecting above the close contact base 7. As shown in FIG. 4, a plurality of (four in FIG. 4) positioning holes 82 constituting the positioning mechanism 8 are opened in the outer peripheral portion of the slave holder 6.

On the other hand, the master carrier 3 is formed in a disk shape, and has a magnetic layer 32 (see FIG. 5) on one surface (the upper surface in the figure).
And a transfer information carrying surface on which a fine uneven pattern is formed. The opposite surface (the lower surface in the figure) is positioned and held on the upper surface of the close contact base 7 so that the center position matches the reference position.

The close contact base 7 is formed in a disc shape, has an outer diameter equal to that of the slave holder 6, and holds the master carrier 3 at the center thereof by suction of air or the like. A plurality of (four) positioning pins 81 of the positioning mechanism 8 are provided upright on the outer peripheral portion of the close contact base 7. A rotation shaft 71 is fixed to the center of the bottom surface of the close contact base 7 and is driven to rotate by rotation driving means (not shown). Although not shown, an XY adjustment mechanism is attached to the close contact base, and the center position of the master carrier 3 held using a measuring instrument or the like is separately adjusted to the reference position.

The positioning mechanism 8 is composed of a plurality of positioning pins 81 provided on the close contact base 7 and a plurality of positioning holes 82 provided on the slave holder 6, and performs positioning by engaging the two. Then, adjust the center position of both. In addition, the positioning holes 82 are used for positioning pins 8.
The positioning pin 81 is provided so as to be partially engaged with the positioning hole 82 to perform positioning, thereby facilitating disengagement. The positioning mechanism 8 has a plurality of positioning holes 8
2 may be provided with a plurality of positioning pins 81 on the slave holder 6.

Above the close contact base 7, a disc-shaped pressing member 41 of the pressing means 4 is provided so as to be vertically movable by a lifting mechanism (not shown). The pressing member 41 is provided with a convex portion at the center of the lower surface, and the pressing surface 41a is
It is provided so as to abut against. As a result, no force is applied to the slave holder 6 and the slave medium 2
Is directly pressed. A pressing force generated by a cylinder or the like is applied to the upper surface of the pressing member by a mechanism (not shown).

The magnetic field applying means 5 comprises an electromagnet device 5 in which a coil 53 is wound around a core 52 having a gap 51 extending in the radial direction of the slave medium 2 and the master carrier 3.
0 and 50 are disposed on both upper and lower sides, and apply a transfer magnetic field parallel to the track direction in the same direction in the vertical direction. In addition,
The magnetic field applying means 5 may be constituted by a permanent magnet device instead of the electromagnet device, or may be provided only on one side.

When a magnetic field is applied, a transfer magnetic field is applied by the magnetic field applying means 5 while rotating the slave medium 2 and the master carrier 3 integrally, and the transfer information of the master carrier 3 is transferred and recorded on the entire circumference of the track of the slave medium 2. . The transfer magnetic field may be provided so as to rotate. Further, the magnetic field applying means 5 is provided so that the electromagnet device 50 is retracted so as to allow the pressing member 41 of the pressing means 4 and the close contact base 7 to open and close.

The operation of the magnetic transfer apparatus 1 as described above will be described. First, in the state before the close contact shown in FIG. 2 in which the pressing member 41 is moved upward, the slave holder 6 in which the slave medium 2 is previously positioned and held is transferred onto the close contact base 7 on which the master carrier 3 is positioned and held. 8
2 is placed on the contact base 7 so that the positioning pins 81 of the contact base 7 are inserted. This positioning pin 81
The positioning by the engagement between the master carrier 3 and the slave medium 2 is performed via the slave holder 6 by the positioning by the engagement between the master carrier 3 and the slave medium 2, and the center positions of the two match precisely.

Thereafter, the pressing member 41 is lowered by the pressing means 4 to press the slave medium 2 and the master carrier 3 at a predetermined pressure. In the close contact state shown in FIG.
The pressing surface 41a of the pressing member 41 abuts on the upper surface of the slave medium 2, and presses the slave medium 2 to bring its lower surface (magnetic recording surface) into close contact with the upper surface (information carrying surface) of the master carrier 3. At this time, the thickness of the supporting step portion 62 of the slave holder 6 is thin, and the pressing force does not act on the slave holder 6, and directly presses the slave medium 2 against the master carrier 3.
Subsequently, the electromagnet devices 50, 50 on both sides are brought close to each other, and a magnetic field for transfer is applied by the electromagnet devices 50, 50 while rotating the contact base 7, so that the magnetization pattern according to the transfer information of the master carrier 3 is transferred to the slave medium. Record on recording surface 2.

After the completion of the magnetic transfer, the pressing member 41 is opened by the pressing means 4 to release the pressing force, and the slave medium 2 after the transfer is brought into close contact (adsorption) with the master carrier 3 by operating the slave holder 6. ) And remove the positioning holes 82
The positioning pin 81 is pulled out from the container and taken out and transported. After that, in another process, the slave medium 2 is reversed and then set again on the slave holder 6, and the master carrier 3 is brought into close contact with the opposite surface of the slave medium 2 to perform magnetic transfer in the same manner.

The slave medium 2 is preliminarily magnetized. This initial magnetization has a magnetic field of a magnetic field intensity distribution having at least one magnetic field intensity portion at the track direction position which is equal to or greater than the coercive force of the slave medium 2, and preferably a magnetic field intensity portion equal to or more than the coercive force of the slave medium 2 is applied to the track direction A magnetic field having a magnetic field intensity distribution in which the magnetic field strength in one direction is less than the coercive force of the slave medium 2 at any position in the track direction and the magnetic field strength in the opposite direction is generated in a part of the track direction. 2 or the magnetic field is rotated in the track direction to perform the initial magnetization (DC demagnetization) of all tracks.

The transfer magnetic field is in the optimum transfer magnetic field strength range (0.6 to 1.3 times the coercive force Hcs of the slave medium 2).
Are not present in any of the track directions in at least one of the portions where the magnetic field strength is within the optimum transfer magnetic field strength range in one track direction. Further, the magnetic field strength in the opposite track direction is less than the optimum transfer magnetic field strength range at any position in the track direction in the entire recording surface of the slave medium 2.

According to the present embodiment, when performing magnetic transfer, the slave medium 2 is positioned and held on the slave holder 6, conveyed to the close contact position, and brought into close contact with the master carrier 3, thereby handling the slave medium 2. The transfer is easy, the positioning with the master carrier 3 can be easily and accurately performed by the positioning mechanism 8 via the slave holder 6, and the detachment of the slave medium 2 sucked after the transfer is performed with the operation of the slave holder 6. And good magnetic transfer can be efficiently continued, and the production efficiency can be improved.

Next, FIGS. 5A to 5C are diagrams showing a basic mode of magnetic transfer. First, as shown in FIG. 5A, an initial magnetic field Hin is applied to the slave medium 2 in one direction in the track direction to perform initial magnetization (DC demagnetization) in advance. Then, FIG.
As shown in the figure, the slave surface (magnetic recording surface) of the slave medium 2 is brought into close contact with the information carrying surface of the master carrier 3 in which the magnetic layer 32 is coated on the fine uneven pattern of the substrate 31, and the track of the slave medium 2 is In the direction of the initial magnetic field Hin.
The magnetic transfer is performed by applying a transfer magnetic field Hdu in the opposite direction. As a result, as shown in FIG.
On the slave surface (track), a magnetization pattern corresponding to a formation pattern of the contact convex portion and the concave portion space of the magnetic layer 32 on the information carrying surface of the master carrier 3 is transferred and recorded.

It should be noted that even if the concave / convex pattern of the substrate 31 of the master carrier 3 is a negative pattern having a concave / convex shape reverse to the positive pattern of FIG. 5, the direction of the initial magnetic field Hin and the direction of the transfer magnetic field Hdu are set to When the direction is reversed, a similar magnetization pattern can be transferred and recorded.

When the substrate 31 is made of a ferromagnetic material such as Ni, magnetic transfer can be performed only with the substrate 31, and the magnetic layer 32 need not be coated. Thus, better magnetic transfer can be performed. When the substrate 31 is a non-magnetic material, it is necessary to provide the magnetic layer 32.

When the magnetic layer 32 is coated on the substrate 31 made of a ferromagnetic metal, the influence of the magnetism of the substrate 31 is cut off.
It is preferable to provide a non-magnetic layer between the substrate 31 and the magnetic layer 32. Further, the uppermost layer is coated with a protective film such as diamond-like carbon (DLC), and this protective film improves contact durability and enables magnetic transfer many times. DLC
An Si film may be formed below the protective film by sputtering or the like.

As the substrate 31 of the master carrier 3, nickel, silicon, quartz plate, glass, aluminum, alloy, ceramics, synthetic resin or the like is used. The formation of the concavo-convex pattern is performed by a stamper method, a photofabrication exposure method, or the like.

In the stamper method, a photoresist is formed on a glass plate (or quartz plate) having a smooth surface by spin coating or the like, and a laser beam (or a laser beam) modulated according to a servo signal while rotating the glass plate is formed. An electron beam (electron beam) is applied to expose a predetermined pattern on the entire surface of the photoresist, for example, a pattern corresponding to a servo signal extending linearly in the radial direction from the center of rotation to each track on a portion corresponding to each frame on the circumference. Thereafter, the photoresist is developed and the exposed portions are removed to obtain a master having an uneven shape due to the photoresist. Next, based on the concave / convex pattern on the surface of the master, plating (electroforming) is performed on the surface to form a Ni substrate having a positive concave / convex pattern, and the Ni substrate is separated from the master. This substrate is used as a master carrier as it is, or a non-magnetic layer, a soft magnetic layer, and a protective film are coated on the concavo-convex pattern as needed to obtain a master carrier.

Further, a second master is prepared by plating the master, and plating is performed using the second master.
A substrate having a negative concavo-convex pattern may be produced. Further, a second master may be plated or pressed with a resin solution and cured to form a third master, and the third master may be plated to form a substrate having a positive concavo-convex pattern. .

On the other hand, after forming a pattern using a photoresist on the glass plate, etching is performed to form a hole in the glass plate, and a master from which the photoresist has been removed is obtained. Thereafter, a substrate is formed in the same manner as described above. You may.

As the material of the substrate made of metal, Ni or Ni alloy can be used. The plating for forming this substrate is performed by various kinds of metal film formation including electroless plating, electroforming, sputtering, and ion plating. Law is applicable. Depth of uneven pattern on substrate (height of protrusion)
Is preferably in the range of 80 nm to 800 nm, more preferably 150 nm to 600 nm. This concavo-convex pattern is formed long in the radial direction in the case of a servo signal.
For example, the length in the radial direction is preferably from 0.3 to 20 μm, and the length in the circumferential direction is preferably from 0.2 to 5 μm. It is preferable to select a pattern that is longer in the radial direction in this range as a pattern carrying servo signal information. .

The magnetic layer 32 (soft magnetic layer) is formed by depositing a magnetic material by vacuum deposition such as vacuum deposition, sputtering, or ion plating, or by plating. As the magnetic material of the magnetic layer, Co, a Co alloy (C
oNi, CoNiZr, CoNbTaZr, etc.), Fe,
Fe alloys (FeCo, FeCoNi, FeNiMo, F
eAlSi, FeAl, FeTaN), Ni, and Ni alloy (NiFe) can be used. Particularly preferably, F
eCo and FeCoNi. The thickness of the magnetic layer is 50n
m to 500 nm, more preferably 1 to 500 nm.
It is 50 nm to 400 nm. The material of the nonmagnetic layer provided as an underlayer below the magnetic layer may be Cr, CrT
i, CoCr, CrTa, CrMo, NiAl, Ru,
C, Ti, Al, Mo, W, Ta, Nb and the like are used.

Preferably, a protective film such as DLC is provided on the magnetic layer, and a lubricant layer may be provided. More preferably, a DLC film of 5 to 30 nm and a lubricant layer are present as a protective film. Further, an adhesion strengthening layer such as Si may be provided between the magnetic layer and the protective film. The lubricant improves deterioration of durability such as generation of scratches due to friction when correcting a shift generated in a contact process with the slave medium 2.

A resin substrate may be prepared using the master, and a magnetic layer may be provided on the surface of the resin substrate to form a master carrier. As a resin material for the resin substrate, an acrylic resin such as polycarbonate / polymethyl methacrylate, a vinyl chloride resin such as polyvinyl chloride / vinyl chloride copolymer, an epoxy resin, an amorphous polyolefin, and a polyester can be used. Polycarbonate is preferred in terms of moisture resistance, dimensional stability, cost, and the like. If there are burrs on the molded product, they are removed by varnish or polish. Alternatively, the master may be formed by spin coating or bar coating using an ultraviolet curable resin, an electron beam curable resin, or the like. The height of the pattern protrusion of the resin substrate is 50 to
The range of 1000 nm is preferred, more preferably 20 nm.
The range is from 0 to 500 nm.

A master layer is obtained by coating a magnetic layer on the fine pattern on the surface of the resin substrate. The formation of the magnetic layer
The magnetic material is formed by a vacuum film forming method such as a vacuum evaporation method, a sputtering method, or an ion plating method, or a plating method.

On the other hand, in the photofabrication exposure method, for example, a photoresist is applied to a smooth surface of a flat substrate, and exposure and development using a photomask corresponding to a servo signal pattern are performed. The formed pattern is formed. Next, in the etching step, the substrate is etched according to the pattern, and a hole having a depth corresponding to the thickness of the magnetic layer is formed. Next, the magnetic material is formed on the surface of the substrate to a thickness corresponding to the formed hole by a vacuum film forming method such as a vacuum evaporation method, a sputtering method, or an ion plating method, or a plating method. Next, the photoresist is removed by a lift-off method, and the surface is polished to remove any burrs and to smooth the surface.

As the slave medium 2, a rigid disk-shaped magnetic recording medium such as a hard disk is used, and its magnetic recording layer is formed by a coating type magnetic recording layer or a metal thin film type magnetic recording layer. As a magnetic material of the metal thin film type magnetic recording layer, Co, a Co alloy (CoPtCr, CoCr, C
oPtCrTa, CoPtCrNbTa, CoCrB,
CoNi, etc.), Fe, Fe alloys (FeCo, FePt,
FeCoNi) can be used.

[Brief description of the drawings]

FIG. 1 is an essential part perspective view showing a transfer state of a magnetic transfer device according to one embodiment of the present invention.

FIG. 2 is a sectional view of a main part showing a state before close contact.

FIG. 3 is a cross-sectional view of a main part showing a contact state.

FIG. 4 is a plan view showing a positioning mechanism.

FIG. 5 is a diagram showing a basic process of magnetic transfer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic transfer apparatus 2 Slave medium 3 Master carrier 4 Pressurizing means 5 Magnetic field applying means 6 Slave holder 7 Adhesive base 8 Positioning mechanism 41 Pressing member 62 Support step 81 Positioning pin 82 Positioning hole

Claims (5)

[Claims] In a magnetic transfer method in which a master carrier carrying transfer information and a slave medium are brought into close contact with each other and a transfer magnetic field is applied to perform magnetic transfer, the master carrier and the master carrier are held in a state where the slave medium is held in a slave holder. A magnetic transfer method, wherein the magnetic transfer method is carried to a close contact position. 2. The magnetic transfer method according to claim 1, wherein the slave medium is positioned and held in the slave holder, and the positioning of the master medium and the slave medium during magnetic transfer is performed via the slave holder. . 3. A magnetic transfer apparatus in which a master carrier carrying transfer information is brought into close contact with a slave medium and magnetic transfer is performed by applying a transfer magnetic field, wherein a close contact base for positioning and holding the master carrier and the slave medium are provided. Slave holder for positioning and holding and transporting to the close contact position, and pressing means for bringing the slave medium and the master carrier held in the slave holder into close contact with each other,
A magnetic transfer device, comprising: a positioning mechanism for positioning the close contact base and the slave holder; and a magnetic field applying unit for applying a transfer magnetic field to the slave medium and the master carrier that are in close contact with each other. 4. The positioning mechanism is characterized in that a plurality of positioning pins or positioning holes are provided in a close contact base, a plurality of positioning holes or positioning pins are provided in the slave holder, and positioning is performed by engaging both. The magnetic transfer device according to claim 3, wherein: 5. The magnetic transfer apparatus according to claim 4, wherein the positioning hole is provided larger than the positioning pin, and the positioning is performed by partially engaging the positioning pin and the positioning hole.