JP2003036504A - Magnetic head, its positioning method, and magnetic recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a positioning method of a magnetic head and the magnetic head to realize high-density recording, and a magnetic recording device. SOLUTION: First, the angle is adjusted to make the surface of the magnetic head 5 parallel to the disk, then the head is adjusted for perpendicularity. The errors in perpendicularity caused by the angle adjustment can be corrected by this adjustment, and the magnetic head 5 can be secured at the designed height. Since the movable range of the magnetic head 5 can be reduced, the magnetic head 5 can be positioned closer to the disk 1 than before. Therefore, high-density recording can be obtained on the disk 1.

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 on a magnetic recording medium, a method for adjusting the position of the magnetic head, and a magnetic recording apparatus. It relates to the adjustment method.

[0002]

2. Description of the Related Art A magneto-optical disk, which is a kind of magnetic recording medium, has the advantage that a large amount of data can be rewritten and the medium can be exchanged. As a magnetic recording device for recording information (data) on the magneto-optical disk, a magneto-optical recording device using a magnetic field modulation method is widely used.

A configuration of the above-mentioned magnetic field modulation type magneto-optical recording apparatus (hereinafter referred to as a magneto-optical apparatus) is shown in FIG.
This will be described with reference to FIG.

A disk cartridge 20 containing a magneto-optical disk 21 is inserted into the magneto-optical device. The magneto-optical device includes a magnetic head 22, an optical pickup 23, and a magnetic head arm 24.

The magnetic head 22 includes a magnetic coil, a magnetic head core, a sliding portion and a slider, which are not shown. Then, the magnetic head 22 generates a magnetic field by the magnetic coil and the magnetic head core. The sliding portion is provided for the magnetic head to slide on the disk surface. The slider accommodates the magnetic coil and the magnetic head core.

The magnetic head 22 is fixed to the optical pickup 23 via a suspension 25 and a magnetic head arm 24. Therefore, the optical pickup 23
The magnetic head 22 and the magnetic head 22 are interlocked with each other.

In the above magneto-optical device, when recording data on the magneto-optical disk 21, the optical pickup 23
Laser light from the magneto-optical disk 21 through the objective lens attached to the objective lens actuator 26.
Is irradiated. Then, by applying a magnetic field that is reversed in accordance with the data signal from the magnetic head 22 to the area of the magneto-optical disk 21 where the laser light is irradiated,
Data is recorded.

At this time, the magnetic head 22 moves within the movement range of the light spot (the portion where the laser light is irradiated on the magneto-optical disk 21) that moves when the objective lens actuator 26 of the optical pickup 23 moves. Magnetic field strength required to record (e.g., 11850
A / m) is required to be generated.

Therefore, in order to reduce the size of the magneto-optical device, it is necessary to accurately adjust the positions of the center of the magnetic head 22 and the center of the light spot (laser spot) when assembling the magneto-optical device. .

In order to position the magnetic head (magnetic field coil), a predetermined position is set as a reference point, and the distance from the reference point to the center position of the objective lens is measured in two directions within the disk plane. Japanese Patent Application Laid-Open No. Hei 5 (1999) -5,091
-325303.

Further, in the structure of the above-mentioned Japanese Patent Laid-Open No. 5-325303, the magneto-optical device is also provided with an adjusting mechanism capable of adjusting the angle of the magnetic head with respect to the two directions in the disk plane, and the center of the magnetic field coil and the objective lens. The position and the angle with respect to the two directions in the disk plane are adjusted.

[0012] However, in recent years, research has been conducted to achieve a higher recording density of the disc. In order to achieve the high recording density of the above-mentioned disc, the magnetic field strength conventionally required for recording data is stronger (for example, 15800).
A / m or more) magnetic field strength is required.

Further, in order to achieve a high recording density of the disc, it is necessary to increase the recording frequency together with the magnetic field strength. Therefore, in order to increase the recording frequency, it is necessary to reduce the time for reversing the magnetic field, that is, to reduce the inductance of the magnetic head as compared with the conventional one (for example, 1 μH or less).

However, increasing the number of turns of the coil in order to increase the magnetic field strength increases the inductance of the magnetic head, and it is difficult to achieve a high recording density of the disk by this method.

Therefore, in order to increase the strength of the magnetic field and reduce the inductance of the magnetic head, the size of the magnetic head core is reduced, or the distance between the disk surface and the magnetic head is reduced. There is a need to.

However, since the size of the magnetic head core is determined by mechanical accuracy such as shaft runout of a spindle motor for rotating the disk, chucking accuracy between the turntable and the disk, position adjustment accuracy of the magnetic head, etc. There is a limit in reducing the size of.

For the above reasons, it is necessary to reduce the distance between the disk surface and the magnetic head in order to achieve high recording density of the magneto-optical disk.

[0018]

However, if the distance between the disk surface and the magnetic head is reduced, the following various problems will appear.

To bring the magnetic head close to the disk surface,
It is necessary to mount the magnetic head strictly at the design standard height. The design reference height is a height that is determined in consideration of a force (pressing force) with which a magnetic head is pressed against a magnetic recording medium (hereinafter referred to as a disk) when designing a magnetic device (a disk surface and a disk surface). It is the distance from the magnetic head). When the mounting position of the magnetic head deviates from the design standard height, the pressing force of the magnetic head on the disk changes, and the load of the spindle motor that rotates the disk fluctuates, and the disk cannot be stably rotated. There is a problem.

Further, when the magnetic head tilts in the direction of the data track of the disk (tangential direction) due to a change in the pressing force of the magnetic head on the disk, the load balance before and after the sliding portion may be lost. is there. In such a case, the slider of the magnetic head cannot follow the disk, and the slider may hit the disk surface (disk hit). When a disc hit occurs, not only does the sliding noise increase, but both the disc and the slider vibrate, so
There is a problem that the adjustment of the focus position of the laser light (focus servo) is adversely affected.

In general, the disk is coated with an overcoat material for improving the slidability of the magnetic head and protecting the disk, and there is a raised portion of the overcoat material on the outer periphery of the disk. . Therefore, when the magnetic head and the disk surface are brought close to each other and the inclination of the magnetic head with respect to the disk surface becomes a certain value or more, the magnetic head and the raised portion of the overcoat material may come into contact with each other. Therefore, normal recording of data may not be possible. Due to the above-mentioned problems, the magnetic head and the disk cannot be brought close to each other within a certain distance in the conventional configuration.

Further, in the configuration disclosed in Japanese Patent Laid-Open No. 5-325303, the position adjustment and angle adjustment of the magnetic head with respect to the disk surface (angle adjustment between the magnetic head surface and the disk surface; skew adjustment) are performed. However, the height adjustment is not strictly performed. Therefore, since the deviation from the design reference height of the magnetic head that occurs when adjusting the angle cannot be adjusted, the magnetic head and the disk cannot be brought close to each other within a certain distance.

The present invention has been made in view of the above conventional problems, and an object thereof is to achieve a high recording density of a magnetic disk by accurately adjusting the magnetic head to a design reference height. (EN) Provided are a magnetic head, a position adjusting method therefor, and a magnetic recording device.

[0024]

In order to solve the above-mentioned problems, the magnetic head position adjusting method of the present invention is to adjust the angle of the magnetic head with respect to the recording surface of the magnetic recording medium, and then to perform the recording surface. It is characterized in that the position is adjusted in a direction perpendicular to.

Here, the angle adjustment means adjusting the angle of the magnetic head so that the magnetic head is parallel to the recording surface of the magnetic recording medium. The term “parallel” means that the angle of the magnetic head surface of the magnetic head is 0.3 with respect to the recording surface.
This is to adjust the magnetic head so that the error range is within °. Further, "position adjustment in the direction perpendicular to the recording surface" is to adjust the position of the magnetic head so that the error range is within ± 30 μm with respect to the design reference height.

With the above arrangement, the magnetic head is adjusted in position in the direction perpendicular to the recording surface of the magnetic recording medium after the angle with respect to the recording surface is adjusted. Therefore, it is possible to eliminate the deviation caused by the angle adjustment in the direction perpendicular to the recording surface, and the deviation due to, for example, an assembly error in assembling the magnetic recording device or a variation in parts. That is, the deviation of the magnetic head with respect to the direction perpendicular to the recording surface can be suppressed within, for example, an error range of ± 30 μm with respect to the design reference height. As a result, the fluctuation of the pressing load on the recording surface of the magnetic head and the tilting range (movable range) of the magnetic head can be reduced, so that the magnetic head does not tilt greatly and hits the recording surface, and the spindle The load on the motor can be reduced.

Further, since the movable range of the magnetic head can be reduced, it is possible to prevent the magnetic head from coming into contact with the overcoat material even in the outer peripheral portion of the magnetic recording medium. As a result, data can be recorded stably.

Since the magnetic head can be brought closer to the recording surface than in the conventional case, the magnetic field generation efficiency can be improved. Therefore, higher recording density of the magnetic recording medium can be realized.

In order to solve the above-mentioned problems, the magnetic head position adjusting method of the present invention adjusts the position of the magnetic head so that the recording distance between the magnetic head and the recording surface is 30 μm or less. Is more preferable.

According to the above construction, for example, the distance between the magnetic head and the recording surface at the time of recording could not be shortened to 50 μm or less in the related art, but the magnetic head is adjusted by the position adjusting method of the magnetic head. Distance to recording surface is 30
Since the thickness can be made equal to or less than μm, the efficiency of magnetic field generation can be further improved. Therefore, compared to the conventional
The magnetic field strength required for recording data can be applied to the magnetic recording medium without changing the magnetic field strength generated from the magnetic head.

In order to solve the above-mentioned problems, the magnetic head position adjusting method of the present invention adjusts the position in the direction perpendicular to the recording surface and then uses resin for the optical pickup of the magnetic head. The fixed structure is more preferable.

According to the above arrangement, the magnetic head is fixed to the optical pickup with resin after the position adjustment. As a result, it is possible to prevent the vibration generated by the optical pickup from propagating to the magnetic head due to the resin absorbing the vibration. Further, it is possible to prevent the vibration from the magnetic head from being transmitted to the optical pickup. Therefore, it is possible to prevent the vibration generated from the optical pickup and the vibration generated from the magnetic head from resonating and vibrating the magnetic recording medium (the surface wobbling of the recording surface), so that the data is more stably recorded. be able to.

In order to solve the above-mentioned problems, the magnetic head position adjusting method of the present invention fixes the magnetic head and the optical pickup by using the suspension and the magnetic head arm, and also provides a clearance between the suspension and the magnetic head arm. A configuration in which the resin is filled in is more preferable.

According to the above construction, since the resin only needs to support the magnetic head and the suspension,
The amount of resin used (filling amount) can be reduced.

In order to solve the above problems, the magnetic head position adjusting method of the present invention fixes the magnetic head and the optical pickup by using the suspension and the magnetic head arm, and at the same time, the magnetic head arm and the optical pickup are fixed. It is more preferable to fill the gap with resin.

With the above arrangement, the suspension and the magnetic head arm can be integrally formed.
Thereby, the position of the magnetic head can be adjusted more easily.

The magnetic head of the present invention is characterized in that its position is adjusted by the above position adjusting method.

With the above arrangement, it is possible to provide a magnetic head whose position is adjusted accurately with respect to the recording surface of the magnetic recording medium.

The magnetic recording apparatus of the present invention is characterized by including the above magnetic head.

According to the above arrangement, it is possible to provide a magnetic recording device which can achieve high data recording density.

In order to fix the position of the magnetic head, for example, when the magnetic head is fixed to the optical pickup by using resin, the magnetic head can be easily fixed to the optical pickup.

The magnetic recording device of the present invention is preferably a magneto-optical recording device in order to solve the above problems.

According to the above structure, by increasing the recording density, the convenience of the magneto-optical recording device can be further enhanced.

[0044]

BEST MODE FOR CARRYING OUT THE INVENTION [First Embodiment] The following will describe one embodiment of the present invention with reference to FIGS. 1 to 19.

In the following description, the radial direction is the direction orthogonal to the data track in the plane of the disk (magnetic recording medium). The tangential direction is a direction orthogonal to the data track direction, that is, the radial direction. The vertical direction means a direction orthogonal to the disc surface. The radial angle (radial skew) is the inclination of the magnetic head surface of the magnetic head (the surface where the protrusions of the magnetic head core are provided) from the direction perpendicular to the radial direction, and the tangential angle (tangential skew) is , The inclination from the direction perpendicular to the tangential direction of the magnetic head surface of the magnetic head.

Here, the design reference height will be described.
The design reference height is a step of designing a magnetic recording device in consideration of the force (pressing force) with which the magnetic head presses the disk and the movable range of the magnetic head when the disk surface is vertically displaced, that is, It is a vertical mounting position of the magnetic head determined on the design drawing. Generally, the magnetic head of the magnetic recording apparatus is mounted to a design standard height to some extent, but it is difficult to mount the magnetic head to an accurate design standard height due to a deviation amount described later.

The movable range is a range in which the magnetic head can move in the vertical direction in order to stably write information (data) on the disk, and is determined by considering the following shift amount.

The displacement amount is roughly classified into a displacement amount irrelevant to the rotation of the disc and a displacement amount varying with the rotation of the disc.

The deviation amount irrelevant to the rotation of the disk includes a deviation amount due to a dimensional error of parts and a deviation amount due to an assembly adjustment error that occurs when assembling the magnetic recording apparatus. Further, as the displacement amount that changes according to the rotation of the disc, the displacement amount due to the surface wobbling of the disc,
There is a shift amount due to vertical swing of the turntable on which the disc is placed. The movable range of the magnetic head is determined in consideration of the above four shift amounts. Then, the smaller the displacement amount, the smaller the movable range can be made. On the other hand, the larger the displacement amount, the larger the movable range.

The case where the magnetic recording device is a magneto-optical recording device will be described below as an example. However, the magnetic recording device is not limited to the magneto-optical recording device.

As shown in FIGS. 1 and 2, the magnetic recording apparatus according to this embodiment includes an optical pickup 2, a suspension 6, a magnetic head arm 7, a magnetic head 5 and the like.

The optical pickup 2 irradiates the disk 1 with laser light and includes an objective lens actuator (hereinafter referred to as an actuator) 3 and an objective lens 4. The laser light emitted from the optical pickup 2 is applied to the disc 1 via the objective lens 4. The actuator 3 is an objective lens 4
The laser beam applied to the disc 1 via the can be made to follow the smaller displacement of the disc surface in the vertical direction or the radial direction. That is, by the operation of the actuator 3, the laser light applied to the disc 1 via the objective lens 4 is adjusted so that the size of the light spot formed on the disc surface is always constant. Then, the optical pickup 2 and the actuator 3 move so that the entire area of the disk 1 can be irradiated with laser light.

The optical pickup 2 and the magnetic head 5 are arranged at positions facing each other with the disk 1 in between. The magnetic head 5 is fixed to a magnetic head arm 7 via a suspension 6. The magnetic head arm 7 is fixed to the fixing portion 2a of the optical pickup 2 via a resin 12 described later. That is, the magnetic head 5 and the optical pickup 2 are fixed via the resin 12, the magnetic head arm 7 and the suspension 6.
Therefore, the magnetic head 5 and the optical pickup 2 can be integrally moved in the disk radial direction (radial direction). The configuration of the magnetic head 5 will be described later.

The suspension 6 is usually formed of a thin metal or the like having a thickness of about 30 to 100 μm. The suspension 6 presses the magnetic head 5 against the disk 1 so that a pressure of about 3 to 10 mN is applied.
As a result, the magnetic head 5 can slide stably even when the disk surface of the disk 1 shakes in the vertical direction. That is, the suspension 6 is elastically deformed in the vertical direction so that the magnetic head 5 can be stably slid even when the disk surface is vertically shaken. In addition, the suspension 6 has a structure shown in FIG.
As shown in, the magnetic head 5 is attached so that the magnetic head surface of the magnetic head 5 (the surface on which the protrusion of the magnetic head core 10 described later is formed) is horizontal (parallel) to the disk surface. There is. In other words, the magnetic head 5 is attached to the suspension 6 so that the direction in which the magnetic field is generated is perpendicular to the disk surface. The side of the suspension 6 to which the magnetic head 5 is not attached is attached to the magnetic head arm 7.

The magnetic head 5 will be described in detail. As shown in FIG. 4, the magnetic head 5 includes a slider 8, a magnetic head core 10 and a coil 11.

As shown in FIGS. 4 to 6, the slider 8 has a sliding portion 9. The sliding portion 9 is provided for the magnetic head 5 to slide on the disk 1. Sliding part 9
The surface that slides on the disk 1 is a spherical surface or a curved surface. A magnetic head core 10 is attached to the slider 8. The magnetic head core 10 is made of a magnetic material such as a ferrite alloy and has a protrusion at its center. The coil 11 is provided so as to surround the protrusion of the magnetic head core 10.

The magnetic head 5 mainly generates a magnetic field from the protrusion of the magnetic head core 10. The magnetic head 5 reverses the direction of the magnetic field according to the data signal and applies the magnetic field to the disk 1. By this, data is recorded.

The magnetic head 5 has a disk 1
The suspension 6 applies a pressure (preload) so that it can slide without being affected by surface wobbling, dust adhering to the disc 1, or a hump of the disc 1.

The disk 1 is a disk cartridge 15
It is housed in. Then, the disk 1 can be rotated by a spindle motor (not shown). Further, since the magnetic head 5 and the optical pickup 2 are integrally movable in the radial direction of the disc 1, recording / reproducing / reading / writing of data to / from all areas of the disc 1 is performed.
It can be erased.

In the magnetic recording apparatus according to this embodiment,
As shown in FIG. 1, a resin 12 is filled between the magnetic head arm 7 and the optical pickup 2. By filling the resin 12 with the resin 12, the resin 12 can absorb the vibration. Therefore, for example, the vibration generated from the optical pickup 2 can be prevented from propagating to the magnetic head 5. Further, by filling the resin 12 between the magnetic head arm 7 and the optical pickup 2, the magnetic head arm 7 and the optical pickup 2 can be easily fixed.

The resin 12 to be filled in the gap between the magnetic head arm 7 and the optical pickup 2 (the gap between the suspension 6 and the magnetic head arm 7 which will be described later) is not particularly limited, but it is UV (ultraviolet ray). It is more preferable to use a UV curable resin that is irradiated with and is cured in tens of seconds. Further, the resin 12 more preferably has a vibration damping characteristic, and particularly preferably has a natural frequency of 1 kHz or higher close to the servo band.

The UV-curable resin used as the resin 12 is widely used for fixing the optical system of the optical pickup 2 and the base of the actuator 3 which require high precision. Since the degree of shrinkage is small, it can be preferably used. But enough UV
For the portion that cannot be irradiated with, for example, the above-mentioned portion may be temporarily fixed using the UV-curable resin and then the two-liquid curing type adhesive may be filled in the portion that is temporarily fixed. Further, for example, when the adhesive force of the UV curable resin and the vibration damping characteristics are contradictory, one of the gaps between the magnetic head arm 7 and the optical pickup 2 (the gap between the magnetic head arm 7 and the suspension 6). The part may be temporarily fixed with the UV curable resin (resin having a strong adhesive force), and the temporarily fixed part may be filled with a resin having a high vibration damping property.

Incidentally, as the portion filled with the resin 12,
It is not limited to the gap between the optical pickup 2 and the magnetic head arm 7. For example, as shown in FIGS.
It may be a gap between the suspension 6 and the magnetic head arm 7.

The resin 12 may be filled in both the gap between the optical pickup 2 and the magnetic head arm 7 and the gap between the suspension 6 and the magnetic head arm 7.

Further, in the structure in which the resin 12 is filled in the gap between the optical pickup 2 and the magnetic head arm 7, the magnetic head arm 7 and the suspension 6 can be integrally formed. In this case, the number of parts can be reduced, and the portion of the magnetic head arm 7 to which the suspension 6 is attached can be thinned.

A method of adjusting the position of the magnetic head of the magnetic recording apparatus according to this embodiment will be described with reference to FIGS.

In the following description, the structure in which the magnetic head 5, the suspension 6 and the magnetic head arm 7 are integrated will be described, but the structure is not particularly limited.

First, the magnetic head arm 7 is gripped by a claw mechanism attached to a stage (magnetic head adjusting mechanism) movable in five directions (having five axes of freedom) (not shown) (first step). ). The five directions are rotation directions for adjusting the two directions in the disk plane (radial direction, tangential direction), the vertical direction, and the two directions in the disk plane (radial angle, tangential angle). The stage is movable or rotatable in the directions of the five axes.

Next, a reference disk having high flatness made of glass or the like is placed on the turntable surface of a spindle motor (not shown). Then, the angle of the magnetic head 5 is adjusted with respect to the two directions within the disk surface of the reference disk (tangential angle adjustment and radial angle adjustment).
(Step 2). Specifically, for example, the angle (angle in the radial direction and the tangential direction) of the magnetic head surface with respect to the disk surface is detected using a tilt detector, and the angle is within a specified angle (for example, 0.3 ° or less). )
The position of the magnetic head arm 7 is adjusted by moving the stage so that Through the above steps, the magnetic head surface can be adjusted to be parallel to the disk surface of the reference disk chucked on the turntable surface of the spindle motor.

Next, the stage is moved so that the magnetic head 5 reaches the design reference height, and the magnetic head arm 7 is vertically adjusted (third step). Specifically, the distance between the disk surface and the upper surface of the magnetic head arm 7 (the surface on which the suspension 6 is fixed) is measured by using a displacement sensor to obtain a design reference height of ± 30 μm.
The position of the magnetic head arm 7 is adjusted so that the error range is within m. Through the above steps, the magnetic head 5 can be adjusted to the design reference height.

Next, the center of the magnetic head core 10 and the optical pickup 2 in two in-plane directions (planar direction) of the disk.
Adjustment so that the laser spot of
Process). Through the above steps, the position of the magnetic head 5 in two directions within the disk surface can be adjusted. The fourth step may be performed by a known method and is not particularly limited.

During the first to fourth steps, the optical pickup 2 is fixed by the fixing jig but not fixed to the magnetic head arm 7. That is, the positions of the optical pickup 2 and the magnetic head arm 7 are adjusted in a spatially separated state.

Then, after adjusting the position of the magnetic head 5, between the magnetic head arm 7 and the optical pickup 2,
A resin 12 such as a UV curable resin is filled and the magnetic head 5 is fixed (fifth step).

By performing the above-mentioned first to fifth steps, the magnetic head 5 can be adjusted and fixed in parallel to the disk surface and at the design reference height.

The method of fixing the magnetic head arm 7 to the magnetic head adjusting mechanism in the first step is not particularly limited. For example, the magnetic head arm 7 and the magnetic head adjusting mechanism may be fixed with screws. If the magnetic head arm 7 is a ferromagnetic material,
The magnetic head arm 7 and the magnetic head adjusting mechanism may be fixed by using an electromagnet.

When adjusting the angle of the magnetic head 5 in the second step, as a method of adjusting the angle, the inclination of the upper surface of the magnetic head arm 7 with respect to the disk surface is within a specified angle (for example, 0.3 °). The position of the magnetic head arm 7 may be adjusted by moving the stage as shown below. Further, the slider 8 of the magnetic head 5 is provided with an optical reflection surface (for example, a mirror), the tilt of the reflection surface is read by a tilt sensor and a displacement sensor, and the magnetic head 5 is read.
The position of may be adjusted.

Further, when the resin 12 is filled in the gap between the suspension 6 and the magnetic head arm 7, the resin 12 may be filled in the procedure described below.

Specifically, for example, the gap between the optical pickup 2 and the magnetic head arm 7 is fixed with a screw or the like. Then, the suspension 6 is gripped by the magnetic head adjusting mechanism to adjust the position (five directions) of the magnetic head 5.
After that, the resin 12 is filled in the gap between the suspension 6 and the magnetic head arm 7.

In the above case, since the optical pickup 2 and the magnetic head arm 7 are firmly fixed with screws or the like, the resin 12 supports only the magnetic head 5 and the suspension 6. . That is, the above resin 1
2 only needs to support the magnetic head 5 and the suspension 6, so that the amount of resin used (filling amount) can be reduced. Further, as the resin 12, a resin having a relatively low adhesive force can be used, so that the resin 1 used
The range of choices of 2 can be expanded. As a result, for example, it is possible to use a resin having characteristics such as low adhesive strength but high vibration damping characteristics. Further, since the mass fixed by the resin 12 is small, the magnetic head 5 and the suspension 6 can be stably fixed even when a shock is applied.

As described above, in the method of adjusting the position of the magnetic head 5 of the magnetic recording apparatus according to this embodiment, first, the angle of the magnetic head 5 is adjusted, then the vertical adjustment is performed, and then the plane adjustment is performed. This is a configuration for adjusting the direction. That is, it is possible to eliminate the vertical shift caused by the angle adjustment by the subsequent vertical adjustment. Further, the position adjusting method of the magnetic head 5 described above, for example, adjusts the deviation in the vertical direction caused by the angle adjustment, as compared with the configuration in which the angle adjustment of the magnetic head 5 is performed in the vertical direction. Since the adjustment can be performed once, the adjustment can be performed efficiently.

In the magnetic recording apparatus according to this embodiment,
The distance between the magnetic head 5 (the magnetic head surface of the magnetic head 5) and the disk surface is made shorter than before. In particular,
The step (slider step) between the slider 8 and the sliding portion 9 of the magnetic head 5 is within 30 μm, more preferably 20 μm.
Within close proximity.

Here, a case where the magnetic head 5 deviates from the design reference height, for example, a case where the magnetic head 5 reads a data track located on the outer peripheral portion of the disk 1 as shown in FIG. 9, will be described.

When the magnetic head 5 is mounted at the design standard height, the magnetic head surface and the disk surface are parallel, as shown in FIG. On the other hand, when the magnetic head 5 deviates from the design standard height, the magnetic head 5
The movable range of is increased. Then, the pressing force of the magnetic head 5 on the disk surface changes greatly. This allows
The magnetic head surface, that is, the slider 8 tilts in the radial direction.

The slider 8 is designed so that the inclination in the radial direction does not change within the movable range of the magnetic head 5 in the vertical direction. However, in general, the left and right shapes of the suspension 6 that fixes the magnetic head 5 are different, and in order to avoid a raised portion 13a (see FIG. 13) of the overcoat material 13, which will be described later, the sliding portion 9 is attached to the slider 8. Since the magnetic head 5 is arranged at a position displaced from the center, if the magnetic head 5 deviates from the design standard height,
The suspension 6 makes the left and right forces of the magnetic head 5 even (the left and right springs have the same amount of deformation).
It cannot be fixed. That is, the magnetic head 5 cannot be fixed parallel to the disk surface.

Further, for example, even when the magnetic head 5 is mounted at the design reference height, when the disk surface moves in the vertical direction because the spring constants on the left and right of the suspension 6 are different, the slider 8 moves in the radial direction. Lean on.

Therefore, when the magnetic head 5 moves in the vertical direction, the slider 8 tilts within a range of + a ° to −a ° with respect to the disk surface, as shown in FIGS. .

The inclination angle of the slider 8 increases as the deviation of the magnetic head 5 from the design reference height increases. Further, as the movable range of the magnetic head 5 becomes wider, the inclination angle of the slider 8 becomes larger.

In the magnetic recording apparatus according to this embodiment,
When the magnetic head 5 is attached, the angle is adjusted and then the vertical direction is adjusted, so that the magnetic head 5 can always be adjusted to the design reference height. As a result, it is possible to eliminate the above-mentioned errors, which are displacement amounts irrelevant to the rotation of the disk 1. Therefore, since it is not necessary to consider the above errors and, it is possible to reduce the movable range of the magnetic head 5. Therefore, the slider 8
Even if the gap between the slider and the sliding portion 9 (slider step) is reduced, it is possible to prevent the disk surface from coming into contact with the magnetic head 5.

Now, the overcoat material 13 will be described. As shown in FIGS. 13 and 14, an overcoat material 13 is applied to the surface of the disk 1 in order to improve the slidability of the magnetic head 5. However, as shown in FIG. 15, a raised portion 13a (about ten and several μm) of the overcoat material 13 is formed on the outer peripheral portion of the disk 1.

In the magnetic recording apparatus according to this embodiment,
When the magnetic head 5 is attached, the angle of the magnetic head 5 is adjusted and then the height of the magnetic head 5 is adjusted.
Can be installed at the design standard height. That is, the movable range of the magnetic head 5 can be reduced.

As a result, even when the distance between the magnetic head 5 and the disk surface is reduced to, for example, 30 μm or less (when the slide step of the magnetic recording device is set to 30 μm or less), the magnetic head 5 Since the movable range is small, it is possible to prevent the disk surface and the magnetic head 5 from coming into contact with each other. Therefore, the magnetic head 5
Will not be damaged or the disc 1 will not be scratched.

As shown in FIGS. 16 and 17, when the magnetic head 5 slides on the outer peripheral portion of the disk 1, the slider 8
Even if the distance between the raised portion 13a of the overcoat material 13 and the raised portion 13a of the overcoat material 13 becomes short, the raised portion 13a of the overcoat material 13 and the slider 8 do not come into contact with each other to vibrate the magnetic head 5 or the disk 1.

Further, in order to avoid the vibration caused by the contact between the disk surface and the magnetic head 5, even if the sliding portion 9 of the slider 8 is provided on the outer peripheral side of the disk 1, for example, Since the movable range of 5 is small (the inclination of the magnetic head 5 with respect to the disk surface can be reduced), the sliding portion 9 does not ride on the raised portion 13a of the overcoat material 13.

In the magnetic recording apparatus according to this embodiment,
Since the resin 12 is filled in the gap between the optical pickup 2 and the magnetic head arm 7, the resin 12 absorbs vibrations (vibrations generated by the actuator 3 and vibrations generated by the slider 8) to cause vibrations. Propagation can be prevented.

More specifically, for example, as shown in FIG.
When the movable part of the magnetic recording medium follows, a reaction force is generated in the magnetic circuit, and the entire magnetic recording device (housing itself) vibrates. As a result, the vibration of the entire magnetic recording apparatus is transmitted to the suspension 6 and passes through the magnetic head 5 to the disk 1
The focus servo becomes unstable because it vibrates.
In the magnetic recording apparatus according to the present embodiment, the resin 12 filled in the gap between the optical pickup 2 and the magnetic head arm 7 absorbs the vibration, so that the disk 1 is not vibrated and the focus servo is stabilized. Can be

Further, for example, when the frictional force of the slider 8 sliding on the disk surface changes, or when a portion other than the sliding portion 9 of the slider 8 contacts the disk surface,
As shown in FIG. 19, the vibration transmitted from the disk 1 to the slider 8 is transmitted to the entire magnetic recording device. Then, the vibration is transmitted through the suspension 6 and the magnetic head arm 7 and vibrates the actuator 3. In the magnetic recording device according to the present embodiment, the resin 12 filled in the gap between the optical pickup 2 and the magnetic head arm 7 is
Since the vibration is absorbed, it is possible to prevent the vibration from propagating to the actuator 3, so that the focus servo and the radical servo (position adjustment in the radical direction) are stabilized.

As described above, in the position adjusting method of the magnetic head 5 according to the present embodiment, after adjusting the angle of the magnetic head 5 with respect to the disk surface, the position adjustment in the direction perpendicular to the disk surface is performed. It is a configuration for performing.

According to the above configuration, the deviation of the magnetic head 5 in the vertical direction is, for example, ± 30 μ from the design reference height.
It can be suppressed within the range of m. As a result, the fluctuation of the pressing load of the magnetic head 5 on the disk surface and the movable range of the magnetic head 5 can be reduced, so that the magnetic head 5 does not tilt and hit the disk surface. Also, the load on the spindle motor can be reduced.

Further, since the movable range of the magnetic head 5 can be reduced, it is possible to prevent the magnetic head 5 from coming into contact with the overcoat material 13 even in the outer peripheral portion of the disk 1, for example. As a result, data can be recorded stably.

The method of adjusting the position of the magnetic head 5 according to the present embodiment adjusts the position of the magnetic head 5 so that the recording distance between the magnetic head 5 and the disk surface is 30 μm or less, more preferably 20 μm or less. It is more preferable that the configuration be performed.

According to the above structure, the magnetic head 5 can be brought closer to the disk surface as compared with the conventional one, so that the magnetic field generation efficiency can be improved. As a result, it is possible to generate a magnetic field necessary for achieving a high recording density on the disk 1 without changing the magnetic field strength of the magnetic head 5, so that it is possible to reduce power consumption.

The magnetic recording apparatus according to this embodiment has the above-mentioned magnetic head 5.

According to the above arrangement, it is possible to provide a magnetic recording device capable of achieving high data recording density.

Further, in order to fix the position of the magnetic head 5, for example, by using the resin 12, the magnetic head 5 can be easily fixed to the optical pickup 2. As a result, it is possible to prevent the magnetic head 5 from resonating and vibrating the disk 1 due to the vibration generated from the optical pickup 2. Further, it is possible to prevent the vibration from the magnetic head 5 from being transmitted to the optical pickup 2.

Further, the position adjusting method of the magnetic head 5 of the magnetic recording apparatus according to the present embodiment provides a spindle motor for rotating a magnetic disk (magnetic recording medium) and a light spot for recording, reproducing and erasing. An optical pickup movable in a radial direction (radial direction) of the magnetic disk, a magnetic head for applying a magnetic field for recording and erasing to a light spot irradiation position on a recording surface, and the magnetic head formed integrally with the magnetic head. A slider for keeping a constant distance between the magnetic head and the magnetic disk by sliding on the disk; and a suspension for supporting the magnetic head in a cantilever shape and elastically deforming to support the magnetic head in a vertically movable manner. A magnetic recording device having a magnetic head arm for synchronously transferring the magnetic head and the optical pickup In the position adjustment method of a magnetic head may be configured to perform the skew adjustment of the disc plane in two directions parallel to plane two directions perpendicular to out-of-plane one direction to the disk surface.

Further, the position adjusting method of the magnetic head of the magnetic recording apparatus according to the present embodiment is such that a spindle motor for rotating the magnetic disk and a light spot for recording, reproducing and erasing are applied to the magnetic disk in the radial direction. A movable optical pickup, a magnetic head for applying a magnetic field for recording and erasing to a light spot irradiation position on a recording surface, and the magnetic head formed integrally with the magnetic head and sliding on the magnetic disk. A slider for keeping the distance between the magnetic disk and the magnetic disk constant, a suspension that supports the magnetic head in a cantilever shape and vertically supports the magnetic head by elastic deformation, and the magnetic head and the optical pickup. A method of adjusting the position of a magnetic head of a magnetic recording device having a magnetic head arm for synchronously transferring It may be configured to fill the resin material in any of the routes for connecting the suspension and the optical pickup.

The method of adjusting the position of the magnetic head of the magnetic recording apparatus according to the present embodiment is such that the spindle motor for rotating the magnetic disk and the optical spots for recording, reproducing and erasing are provided in the radial direction of the magnetic disk. A movable optical pickup, a magnetic head for applying a magnetic field for recording and erasing to a light spot irradiation position on a recording surface, and the magnetic head formed integrally with the magnetic head and sliding on the magnetic disk. A slider for keeping the distance between the magnetic disk and the magnetic disk constant, a suspension that supports the magnetic head in a cantilever shape and vertically supports the magnetic head by elastic deformation, and the magnetic head and the optical pickup. A method of adjusting the position of a magnetic head of a magnetic recording device having a magnetic head arm for synchronously transferring After gripping the head arm and performing skew adjustment in two directions within the disk supporting surface of the spindle motor or the disk surface, height adjustment between the suspension mounting surface and the disk surface is performed, and thereafter, After adjusting the two directions in the disk plane so that the center of the magnetic head core coincides with the light spot, a resin material may be filled and fixed in the gap between the magnetic head arm and the optical pickup. .

The method of adjusting the position of the magnetic head of the magnetic recording apparatus according to the present embodiment is such that the spindle motor for rotating the magnetic disk and the optical spots for recording, reproducing and erasing are provided in the radial direction of the magnetic disk. A movable optical pickup, a magnetic head for applying a magnetic field for recording and erasing to a light spot irradiation position on a recording surface, and the magnetic head formed integrally with the magnetic head and sliding on the magnetic disk. A slider for keeping the distance between the magnetic disk and the magnetic disk constant, a suspension that supports the magnetic head in a cantilever shape and vertically supports the magnetic head by elastic deformation, and the magnetic head and the optical pickup. A method of adjusting the position of a magnetic head of a magnetic recording device having a magnetic head arm for synchronously transferring After gripping the suspension mounting portion and performing skew adjustment in two directions within the disk supporting surface of the spindle motor or the disk surface, height adjustment between the suspension mounting surface and the disk surface is performed, and thereafter, Even if the magnetic head core is adjusted in two directions in the disk plane so that the center of the magnetic head coincides with the light spot, a resin material is filled in the gap between the magnetic head and the magnetic head arm and fixed. Good.

[0109]

The magnetic head position adjusting method of the present invention comprises:
As described above, after the angle of the magnetic head is adjusted with respect to the recording surface of the magnetic recording medium, the position is adjusted in the direction perpendicular to the recording surface.

Therefore, since the magnetic head can be brought closer to the recording surface than in the conventional case, the efficiency of magnetic field generation can be improved. Therefore, it is possible to achieve the high recording density of the magnetic recording medium.

In the magnetic head position adjusting method of the present invention, as described above, it is more preferable that the position of the magnetic head is adjusted so that the recording distance between the magnetic head and the recording surface is 30 μm or less.

Therefore, the magnetic field generation efficiency can be further improved. Therefore, as compared with the related art, it is possible to provide the magnetic recording medium with the magnetic field strength necessary for recording data without changing the magnetic field strength generated from the magnetic head.

As described above, the magnetic head position adjusting method of the present invention has a structure in which the magnetic head is fixed to the optical pickup using resin after the position adjustment in the direction perpendicular to the recording surface is performed. More preferable.

Therefore, since the resin absorbs the vibration, it is possible to prevent, for example, the vibration generated from the optical pickup from propagating to the magnetic head. Further, it is possible to prevent the vibration from the magnetic head from being transmitted to the optical pickup. As a result, it is possible to prevent the vibration generated from the optical pickup and the vibration generated from the magnetic head from resonating and vibrating the magnetic recording medium (the surface wobbling of the recording surface), so that the data is more stably recorded. There is an effect that can be.

As described above, the magnetic head position adjusting method of the present invention fixes the magnetic head and the optical pickup using the suspension and the magnetic head arm, and fills the gap between the suspension and the magnetic head arm with resin. The configuration is more preferable.

Therefore, since the resin only needs to support the magnetic head and the suspension, the amount of the resin used (filling amount) can be reduced.

As described above, the magnetic head position adjusting method of the present invention fixes the magnetic head and the optical pickup by using the suspension and the magnetic head arm, and at the same time, the resin is placed in the gap between the magnetic head arm and the optical pickup. The filling structure is more preferable.

Therefore, the suspension and the magnetic head arm can be integrally formed. This brings about an effect that the position of the magnetic head can be adjusted more easily.

The magnetic head of the present invention has a position adjusted by the above position adjusting method.

Therefore, there is an effect that it is possible to provide a magnetic head whose position is accurately adjusted with respect to the recording surface of the magnetic recording medium.

The magnetic recording apparatus of the present invention has the above-mentioned magnetic head.

Therefore, it is possible to provide a magnetic recording device capable of achieving high data recording density.
Further, in order to fix the position of the magnetic head, for example, when resin is used, the magnetic head can be easily fixed to the optical pickup.

The magnetic recording apparatus of the present invention, as described above,
A configuration that is a magneto-optical recording device is more preferable.

Therefore, by increasing the recording density, the convenience of the magneto-optical recording apparatus can be further enhanced.

[Brief description of drawings]

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

FIG. 2 is a plan view showing a main part of the magnetic recording device of FIG.

3 is a cross-sectional view taken along the line AA ′ of the magnetic recording device of FIG.

FIG. 4 is an exploded perspective view showing a configuration of a magnetic head of the magnetic recording device.

5 is a perspective view showing the configuration of the magnetic head of FIG.

FIG. 6 is a perspective view showing the configuration of the magnetic head of FIG.

FIG. 7 is a cross-sectional view schematically showing another configuration of the magnetic recording device according to the embodiment of the invention.

8 is a plan view showing a main part of the magnetic recording device of FIG. 7. FIG.

FIG. 9 is a plan view showing a state in which the magnetic head is sliding on the outer peripheral portion of the disk.

FIG. 10 is a cross-sectional view showing a case where the magnetic head is fixed at the design reference height.

FIG. 11 is a cross-sectional view showing a case where the magnetic head is above the design reference height.

FIG. 12 is a cross-sectional view showing a case where the magnetic head is below the design standard height.

FIG. 13 is a plan view of a disc coated with an overcoat material.

14 is a cross-sectional view of the disc of FIG.

FIG. 15 is a cross-sectional view of a main part of the disc shown in FIG.

FIG. 16 is a plan view showing a state in which the magnetic head is sliding on the outer peripheral portion of the disk coated with the overcoat material.

FIG. 17 is a cross-sectional view showing a state in which the magnetic head is sliding on the outer peripheral portion of the disk coated with the overcoat material.

FIG. 18 is a view showing that a reaction force is applied to the actuator,
FIG. 6 is a cross-sectional view of a magnetic recording device for explaining a phenomenon in which the entire magnetic recording device vibrates.

FIG. 19 is a cross-sectional view of a magnetic recording device for explaining a phenomenon in which vibration of a magnetic head is transmitted to an optical pickup.

FIG. 20 is a plan view showing the outline of a conventional magnetic recording device.

21 is a cross-sectional view taken along the line BB ′ of the magnetic recording device of FIG.

[Explanation of symbols]

1 disk (magnetic recording medium) 2 optical pickup 3 Objective lens actuator 4 Objective lens 5 magnetic head 6 suspension 7 Magnetic head arm 8 sliders 9 Sliding part 10 Magnetic head core 11 coils

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Toshiyuki Tanaka             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Inside the company F term (reference) 5D075 AA03 CC04 CF06 CF08                 5D093 AA03 AC07 AD05 HB12 HB29

Claims (8)

[Claims] 1. A method of adjusting the position of a magnetic head, comprising adjusting the angle of the magnetic head with respect to the recording surface of a magnetic recording medium, and then adjusting the position in a direction perpendicular to the recording surface. 2. The method of adjusting the position of a magnetic head according to claim 1, wherein the position of the magnetic head is adjusted so that the distance between the magnetic head and the recording surface during recording is 30 μm or less. 3. The position of the magnetic head according to claim 1, wherein the magnetic head is fixed to the optical pickup by using resin after the position adjustment in the direction perpendicular to the recording surface is performed. Adjustment method. 4. The magnetic head according to claim 3, wherein the magnetic head and the optical pickup are fixed by using a suspension and a magnetic head arm, and a resin is filled in a gap between the suspension and the magnetic head arm. Position adjustment method. 5. The magnetic head according to claim 3, wherein the magnetic head and the optical pickup are fixed by using a suspension and a magnetic head arm, and a resin is filled in a gap between the magnetic head arm and the optical pickup. Position adjustment method. 6. A magnetic head which is position-adjusted by the position adjusting method according to any one of claims 1 to 5. 7. A magnetic recording apparatus comprising the magnetic head according to claim 6. 8. The magnetic recording apparatus according to claim 7, which is a magneto-optical recording apparatus.