JP4077597B2 - Magnetic transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a servo signal for positioning a data writing / reading head written on the surface of a magnetic recording medium such as a hard disk in a hard disk drive using a magnetic film as a recording material, which has become the mainstream as an external storage device of a computer. In particular, the present invention relates to a magnetic transfer device having a handling device as a handling means for holding a magnetic recording medium.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a hard disk drive, data is recorded / reproduced on the surface of a rotating magnetic recording medium while the magnetic head is kept flying at a distance of several tens of nanometers by a flying mechanism called a slider. Bit information on the magnetic recording medium is stored in data tracks arranged concentrically on the disk, and the data storage / reproducing head is moved and positioned at a desired data track on the magnetic recording medium surface at high speed. Data recording and playback.
[0003]
A positioning signal (servo signal) for detecting the relative position between the magnetic head and the data track is written concentrically on the magnetic recording medium, and the magnetic head that is recording and reproducing data is spaced at regular intervals. Detecting your position with. After installing the magnetic recording medium in the hard disk device so that the center of the servo signal does not deviate from the center of the disk or the center of the magnetic head trajectory, the servo signal is used using a dedicated device called a servo writer. Is written on the magnetic recording medium.
[0004]
Currently, in the development stage, the recording density reaches ²⁰ Gbit / in ² and the recording density is increasing at an annual rate of 60% or more. Along with this, the density of servo signals for the magnetic head to detect its position has also increased, and the servo signal writing time tends to increase year by year. Such an increase in servo signal writing time has become one major factor in reducing the productivity of hard disk drives and increasing costs.
[0005]
Recently, in contrast to the method of writing servo signals using the signal write head of the servo writer described above, servo signals are written to the magnetic recording medium collectively by magnetic transfer, and servo information is dramatically written. Technology development is underway to reduce time.
[0006]
Thus, when writing servo signals by magnetic transfer, it is necessary to bring the master disk and magnetic recording medium into close contact with each other, so that there are foreign objects on the surface of the magnetic recording medium on which the servo signals are written, or something else. If there is a protrusion, the quality of the written servo signal will be poor, and in the worst case, the master disk may be scratched and subsequent magnetic transfer may become impossible. There is.
[0007]
Therefore, before writing a servo signal by magnetic transfer, it is necessary to optically inspect the surface of the magnetic recording medium, or to perform a foreign matter inspection for inspecting the surface of the magnetic recording medium for protrusions or foreign matters. Furthermore, regarding the method of handling the magnetic recording medium in the foreign matter inspection apparatus, a method and apparatus that do not allow scratches or dirt to adhere to the magnetic recording medium are required.
[0008]
[Problems to be solved by the invention]
The part that optically inspects abnormal projections and foreign matter on the surface of the magnetic recording medium before transfer in the magnetic transfer device is inspected while rotating while the magnetic recording medium is held horizontally on a spindle called an inspection index. Is going. When handling magnetic recording media before and after inspection, if scratches, dirt, etc. are attached to the magnetic recording medium, the effect of handling on the magnetic recording medium is affected by the transfer after inspection. This is a major factor for lowering the adhesion between the master and the magnetic recording medium. Further, in order to perform the transfer with the inspection index of the inner circumferential horizontal chuck, a mechanism capable of holding the magnetic recording medium horizontally is required.
[0009]
One example of such a conventional handling device is shown in FIGS. As shown in the figure, the conventional handling apparatus has a pair of substantially Y-shaped hands 101 disposed opposite to the left and right sides of the magnetic recording medium 100 such as a hard disk, for example. Each hand arm portion 102 is provided with a claw 103 in which a groove 104 having a V-shaped cross section is formed.
[0010]
With such a handling device, the outer periphery of the magnetic recording medium 100 such as a hard disk is sandwiched from both sides by applying a mechanical pressing force from both sides via a claw 103 with a spring, a piston or the like. There is a method of holding 100 by the groove 104 of the claw 103. However, in such a holding method, an unnecessarily large force is applied to the magnetic recording medium 100 by a force such as a pressing force for pinching the magnetic recording medium 100 or a contact area of the claw 103 when the magnetic recording medium 100 is pinched. For this reason, this is a major cause of the occurrence of scratches and dents on the magnetic recording medium 100.
Accordingly, an object of the present invention is to solve such a problem in the prior art, so that the magnetic recording medium can be stably held horizontally without applying an extra force to the magnetic recording medium, and the magnetic recording medium is not damaged. Another object of the present invention is to provide a magnetic transfer device having a handling device that does not cause contamination or dirt.
[0011]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, according to the present invention, a magnetic transfer device applies the magnetic field from the outside in a state in which the magnetic transfer master disk is in close contact with the magnetic recording medium, whereby the magnetic transfer master disk In a magnetic transfer apparatus for magnetically transferring servo information written in a soft magnetic material pattern on the surface of the magnetic recording layer to the magnetic recording layer on the surface of the magnetic recording medium, the surface of the magnetic recording medium is abnormal before the magnetic transfer. A foreign matter inspection unit for detecting protrusions and foreign matters while rotating the magnetic recording medium while holding the magnetic recording medium horizontally; and handling means for stably holding the magnetic recording medium horizontally. has a transfer hand having a hand portion bifurcated, and a support frame which forms a three conical shape disposed on the same plane of conveyance hand, the 3 The support frame, be arranged so as to be positioned at the apexes of an equilateral triangle, and two support pieces that is disposed on the vicinity of each of the front end of the hand portion bifurcated in the conveying hand, and, on the bifurcated It consists of one supporting piece arranged on the center line of the branching portion of the transporting hand, and the handling means makes point contact with the outer peripheral end surface of the magnetic recording medium on the conical surface of the three supporting pieces, The magnetic recording medium is supported .
[0015]
In the magnetic transfer apparatus of the present invention, the support piece is made of a resin material or a hard rubber material.
Also, the handling means, the own weight of the magnetic recording medium, a magnetic recording medium, may be supported so as to scoop by the three supporting frame.
[0016]
As described above, according to the present invention, the magnetic transfer device applies the magnetic field from the outside in a state where the magnetic transfer master disk is in close contact with the magnetic recording medium, so that the surface of the magnetic transfer master disk is made of soft magnetic material. When the servo information written in the pattern is magnetically transferred to the magnetic recording layer on the surface of the magnetic recording medium, a foreign matter inspection unit that detects abnormal protrusions and foreign matters on the surface of the magnetic recording medium before the magnetic transfer. By using a handling device as a handling means having a conveying hand in which three conical support pieces are arranged, any damage or dirt is attached to the magnetic recording medium without applying extra force to the magnetic recording medium. Therefore, the magnetic recording medium can be stably held horizontally and supported without rattling.
[0017]
Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments of the present invention as illustrated in the accompanying drawings.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Example 1
FIGS. 1 to 4 are views showing a handling device as a handling means of the magnetic transfer device of the present invention, FIG. 1 is a vertical sectional view, FIG. 2 is a plan view, and FIG. 3 is a magnetic recording on the handling device of FIG. FIG. 4 is a perspective view of the plan view holding the medium.
[0019]
As shown in the drawings, in these drawings, the magnetic transfer apparatus according to the first embodiment of the present invention has a handling apparatus 1 as a handling means composed of a substantially Y-shaped flat conveying hand 2. The substantially Y-shaped transfer hand 2 of the handling device 1 is made of, for example, a thin metal plate or a flat plate material of a resin material such as plastic, and has two hand portions 3 which are divided into two on the same plane. In addition, three conical support pieces 4 are provided on the transport hand 2. These three conical support pieces 4 arranged on the same plane are first arranged one by one near the tip of each hand unit 3, and further, the transport hand 2 in which the two hand units 3 are separated. The remaining one support piece 4 is arranged on the center line of the branch portion, and these three conical support pieces 4 are located on the same plane of the equilateral triangle so that they are located at the vertices of the equilateral triangle, respectively. Is arranged.
[0020]
When such three cone-shaped support pieces 4 are arranged at three positions on the same plane of the transport hand 2 so as to be respectively located at the vertices of the regular triangle, and the magnetic recording medium 10 is supported at three points, Since the circular magnetic recording medium 10 is supported horizontally and satisfactorily by the three cone-shaped support pieces 4 arranged so as to be positioned at the apexes of the regular triangle, the transport hand 2 can be moved in both the vertical and horizontal directions. In contrast, the magnetic recording medium 10 can be stably held in a horizontal state even when operated at a high speed.
[0021]
The actual transfer of the magnetic recording medium 10 between the transport hand 2 and the spindle as the inspection index 12 in the handling apparatus of the magnetic transfer apparatus of the present invention configured as described above is performed by the following operation. ing.
[0022]
As shown in FIG. 5, when the magnetic recording medium 10 is taken out from the inspection index 12, first, as shown in FIG. 5A, below the magnetic recording medium 10 held on the inspection index 12, The support piece 4 on the Y-shaped transport hand 2 of the handling device 1 is positioned as shown in the figure. At this time, although not shown in the drawing, the remaining support pieces 4 are also located at the same height on the center line. Next, as shown in FIG. 5B, the chuck 14 of the inspection index 12 is loosened and turned off. When the chuck 14 of the inspection index 12 is turned off in this way, the chuck 14 of the inspection index 12 is loosened in the direction of contracting in the radial direction and separated from the central hole of the magnetic recording medium 10, so that the magnetic recording medium 10 is Become freed. As shown in FIG. 5B, in the state where the chuck 14 of the inspection index 12 is separated from the magnetic recording medium 10 and the magnetic recording medium 10 is free, as shown in FIG. 2 is lifted as indicated by an arrow, the outer peripheral end surface of the magnetic recording medium 10 is brought into point contact with the conical surface of the support piece 4, and the magnetic recording medium 10 is scooped by the three support pieces 4 on the transport hand 2. Support it by raising it. As a result, the magnetic recording medium 10 is lifted and separated from the chuck 14 of the inspection index 12 by the transport hand 2 of the handling device 1 and supported horizontally. The magnetic recording medium 10 and the three support pieces 4 are shocked. The impact of the contact can be kept to a minimum, and therefore the lifting speed of the transport hand 2 is set to the minimum speed that can ensure the predetermined throughput of the magnetic transfer device. Can do.
[0023]
Further, when the magnetic recording medium 10 is supplied to the inspection index 12, the magnetic recording medium 10 can be supplied to the inspection index 12 and magnetic transfer can be performed by performing the reverse operation as described above.
[0024]
In addition, since the support piece 4 is in contact with the magnetic recording medium 10 many times at the same contact point, it always maintains good point contact and does not cause contact damage to the magnetic recording medium 10. Therefore, a similar material such as a resin material having a certain degree of softness or a hard rubber can be used.
[0025]
In such a magnetic transfer apparatus of the present invention, the handling apparatus 1 is disposed on the same plane of the transport hand 2 without applying any extra force or stress to the magnetic recording medium 10 from the outside. The three support frames 4 are in contact with the magnetic recording medium 10 with a minimum contact area with respect to the outer peripheral end surface of the magnetic recording medium 10 to stably hold the magnetic recording medium 10 horizontally without rattling. The magnetic recording medium 10 is horizontally placed on the transport hand 2 by utilizing the weight of the medium 10 so that the magnetic recording medium 10 has a vertical stability and no force is applied to the magnetic recording medium 10. In addition, three support cones 4 having a conical shape that can be supported as a point contact in order to minimize the contact with the magnetic recording medium 10 is used for the direct support with the magnetic recording medium 10. It is assumed that contact with the magnetic recording medium 10 at one point on the conical surface of the support frame 4, respectively Re. Further, regarding the horizontal stability of the magnetic recording medium 10, the support pieces 4 are arranged on the transport hand 2 so as to be positioned at the apexes of the equilateral triangle according to the outer diameter of the magnetic recording medium 10. Thus, the stability can be improved, and the magnetic recording medium 10 can be well positioned on the support frame 4 and stably supported horizontally without backlash.
[0026]
【The invention's effect】
As described above, according to the present invention, the magnetic transfer device according to claim 1 applies the magnetic field from the outside in a state where the magnetic transfer master disk is in close contact with the magnetic recording medium. In a magnetic transfer apparatus that magnetically transfers servo information written in a soft magnetic material pattern on the surface of a disk to a magnetic recording layer on the surface of the magnetic recording medium, the surface of the magnetic recording medium is read before magnetic transfer. A handling unit that stably holds the magnetic recording medium horizontally in a foreign matter inspection unit that detects abnormal protrusions and foreign matters while rotating the magnetic recording medium in a horizontally held state; Has a transport hand having a bifurcated hand portion and three support cones having a conical shape arranged on the same plane of the transport hand. The three support frames are be arranged so as to be positioned at the apexes of an equilateral triangle, and two support pieces that is disposed on each of the vicinity of the distal end of the hand portion bifurcated in the conveying hand and, It consists of one support piece arranged on the center line of the bifurcated portion of the conveying hand which is divided into two branches, and the handling means makes the outer peripheral end surface of the magnetic recording medium point-contact with the conical surface of the three support pieces. by the so supporting the magnetic recording medium, without adding an extra force to the magnetic recording medium, and without any way attached to scratches or dirt on the magnetic recording medium, and holds the magnetic recording medium horizontally stable And can be supported horizontally without rattling.
[0027]
In the magnetic transfer apparatus according to claim 1 of the present invention, the magnetic said handling means includes a transfer hand, because it has three supporting frames disposed on the same plane of conveyance hand, by the support frame on the transport hand The recording medium can be accurately positioned in the center, and can be supported stably and horizontally without backlash.
[0028]
In the magnetic transfer apparatus according to claim 1 of the present invention, the conveying hand has a hand portion bifurcated, since the support frame is arranged to be positioned at the apexes of an equilateral triangle, the magnetic recording The medium can be accurately centered by the three support pieces and can be stably and suitably supported without rattling.
[0029]
In the magnetic transfer apparatus according to claim 1 of the present invention, since the support frame is formed into a conical shape, it can be supported favorably without play the magnetic recording medium.
[0030]
In the magnetic transfer apparatus according to claim 2 of the present invention, since the support frame is made of a resin material or a hard rubber material, simple, and easily, can be mass-produced inexpensively.
[Brief description of the drawings]
FIG. 1 is a schematic vertical sectional view of a magnetic transfer apparatus according to a first embodiment of the present invention.
FIG. 2 is a plan view of the transport hand of the handling device in the first embodiment of the magnetic transfer apparatus of the present invention.
3 is a plan view of a magnetic recording medium placed on the transport hand of FIG. 2. FIG.
4 is a perspective view of FIG. 3. FIG.
FIG. 5 is a schematic cross-sectional view showing the transfer operation of the magnetic recording medium between the transport hand and the inspection index in the handling device of the magnetic transfer apparatus of the present invention, in which (a) shows a state in which the magnetic recording medium is held in the inspection index. FIG. 5B is a diagram illustrating a state in which the chuck of the inspection index is loosened and turned off, and FIG. 5C is a diagram illustrating a state in which the inspection index is separated from the magnetic recording medium and is held by the transport hand. is there.
FIG. 6 is a plan view for explaining a conventional example.
7 is a vertical sectional view of the conventional example of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Handling apparatus 2 Conveyance hand 3 Hand part 4 Supporting piece 10 Magnetic recording medium 12 Inspection index 14 Chuck 100 Magnetic recording medium 101 Hand 102 Hand arm part 103 Claw 104 Groove

Claims (3)

Servo information written in a pattern of a soft magnetic material on the surface of the magnetic transfer master disk by applying a magnetic field from the outside with the magnetic transfer master disk in close contact with the magnetic recording medium. In a magnetic transfer device that magnetically transfers to a magnetic recording layer on the surface of
In the foreign matter inspection unit that detects abnormal protrusions and foreign matter on the surface of the magnetic recording medium before the magnetic transfer while rotating the magnetic recording medium in a horizontal state, the magnetic recording medium is stably kept horizontally. Holding means for holding,
The handling means includes a transport hand having a bifurcated hand portion, and a support piece having three conical shapes arranged on the same plane of the transport hand,
The three support pieces are arranged so as to be located at the apex of an equilateral triangle, and two support pieces are arranged near the tips of the bifurcated hand portions of the transport hand, and It consists of one support piece arranged on the center line of the branching portion of the transfer hand that is divided into two branches,
The magnetic transfer apparatus is characterized in that the handling means supports the magnetic recording medium by making point contact with the outer peripheral end surface of the magnetic recording medium on the conical surfaces of the three support frames .   The magnetic transfer device according to claim 1, wherein the support piece is made of a resin material or a hard rubber material. Said handling means, the own weight of the magnetic recording medium, magnetic transfer according to the magnetic recording medium, to claim 1 or 2, characterized in that the support as scooping by the three supporting frame apparatus.

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