JP4038323B2 - Magnetic transfer method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a magnetic transfer apparatus for transferring magnetic records such as format information from a master disk to a magnetic disk used in a hard disk device, a floppy disk device or the like.
[0002]
[Prior art]
With the advance of magnetic recording technology, the capacity or size of magnetic recording devices has been increased. In particular, there is a remarkable improvement in recording capacity by high-density recording of a hard disk device. This hard disk device includes a plurality of magnetic disks, a magnetic head corresponding to each magnetic disk, and an electronic circuit for recording and reproduction. In the manufacturing process of the hard disk device, magnetic signals such as format information and address information are written on the magnetic disk. The magnetic signal can be written using the write head of the hard disk device itself, but the magnetic signal can be recorded collectively on the hard disk by transfer using a master disk on which the magnetic signal is recorded. Transcription is possible. FIG. 3 shows a conventional configuration of a magnetic transfer apparatus that uses a magnetic disk as a slave disk and transfers magnetic signals from a master disk to a slave disk.
[0003]
In FIG. 3 , the holder 4 mounted on the straight slider 6 holds the master disk by vacuum suction from the suction port 4a. The suction head 3 holds the slave disk 1 by vacuum suction from the holding suction port 3 a and moves the slave disk 1 to a position facing the master disk 2. When the holder 4 is moved forward by the rectilinear slider 6 and the master disk 2 is brought into contact with the slave disk 1, when the vacuum suction is performed from the intake / exhaust port 3 b provided in the suction head 3, the central hole 1 a of the slave disk 1 is obtained. Thus, the vacuum suction force reaches the master disk 2, and the master disk 2 and the slave disk 1 are in close contact with each other. By maintaining this vacuum suction until magnetic transfer by application of an external magnetic field is completed, good magnetic transfer can be performed in a close contact state. After the magnetic transfer is completed, when the vacuum suction from the intake / exhaust port 3b is switched to the compressed air discharge, the compressed air discharged from the center hole 1a enters between the slave disk 1 and the master disk 2 and is separated from the close contact state. The retainer 4 is moved backward by the linear slider 6 to separate the master disk 2 from the slave disk 1.
[0004]
[Problems to be solved by the invention]
In the above-described conventional configuration, when compressed air is released in order to separate the slave disk 1 and the master disk 2 from the close contact state, the compressed air becomes dense due to the Benchery effect when the compressed air flows between the slave disk 1 and the master disk 2. , caused a phenomenon that disk is vibrated, there is a problem in that the damage to the master disk 2.
[0005]
An object of the present invention is to provide a magnetic transfer device that prevents the occurrence of vibration when the master disk and the slave disk are separated from the close contact state.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the first invention of the present application is directed to a slave disk to transfer information recorded on a master disk by bringing a master disk without a hole in the center and a slave disk having a center hole in the center in close contact with each other. In a magnetic transfer method for magnetic transfer, a slave disk that holds the slave disk and that has a hollow portion that opens to the center hole, and that is held by slave disk holding means that includes an intake / exhaust port that opens to the hollow portion ; After performing magnetic transfer with the master disk in close contact with the slave disk by bringing the master disk into face-to-face contact and vacuum suction from the intake / exhaust port, switch the vacuum suction from the intake / exhaust port to compressed air supply. The close contact between the slave disk and the master disk is released, and the pressure of the hollow part by the compressed air supply is applied to the disk. The master disk and the slave disk are separated when a predetermined pressure lower than the pressure at which the flow rate is generated is generated. The slave disk and the master disk are separated by vacuum suction from the intake and exhaust ports. Good magnetic transfer is performed in a close contact state, and after the magnetic transfer, the close contact between the slave disk and the master disk can be released by releasing the compressed air from the intake / exhaust port into the hollow portion of the slave disk holding means . The release of adhesion due to the supply of compressed air is made by the gas entering between the slave disk and the master disk.However, if the flow rate of the invading gas increases due to an increase in the pressure supply pressure, the disk will vibrate. Since the slave disk and the master disk are separated when the supply pressure reaches a predetermined pressure lower than the pressure at which the vibration is generated, vibration can be prevented.
[0007]
In the magnetic transfer method described above, when the compressed air supply pressure becomes a predetermined pressure lower than the pressure at which the disk generates vibrations, the gas that enters between the slave disk and the master disk by stopping the compressed air supply The generation of vibration can be prevented by stopping the supply of compressed air before the flow rate of the air reaches the compressed air supply pressure at which the flow of the disk generates vibration.
[0008]
Further, the second invention of the present application is a magnetic transfer in which transfer information recorded on a master disk is magnetically transferred to a slave disk by bringing a master disk without a hole in the center and a slave disk having a center hole in the center in close contact with each other. In the apparatus, the slave disk holding means that holds the slave disk and has a hollow portion that opens to the center hole, and has an intake / exhaust port that opens to suck and exhaust the hollow portion, and the master disk Master disk holding means for holding, advancing and retreating driving means for moving the master disk holding means or slave disk holding means in a direction in which the master disk and the slave disk come into contact with each other, and transfer information recorded on the master disk to the slave disk and magnetic transfer means for magnetic transfer, the hollow from the suction-exhaust opening A compressed air supply means for releasing the close contact with the slave disk and the master disk by releasing the vacuum suction means, the pressure in the hollow portion from the suction-exhaust opening to contact the master disk to the slave disk by vacuum suction, the When pressure information from the pressure detecting means for detecting the pressure of the hollow part by the pressure air supply by the pressure air supplying means and pressure information from the pressure detecting means becomes a predetermined pressure lower than the pressure at which the flow rate causing the vibration of the disk is generated. Control means for operating the advance / retreat drive means in a direction to separate the master disk and slave disk, and advancing / retreating drive means for moving the slave disk and master disk held by the slave disk holding means. is opposed abutment by said in the intake and exhaust port by the vacuum suction means In the state of being in close contact with the master disk to the slave disk by vacuum suction in section, after the magnetic transfer by a magnetic transfer means, it switches the vacuum suction from the suction-exhaust opening to compressed air supply to the hollow portion slave When the close contact between the disk and the master disk is released and the pressure detection means detects that the compressed air supply pressure exceeds a predetermined value, the control means operates the advance / retreat drive means to separate the master disk and the slave disk. . Good magnetic transfer is performed with the slave disk and master disk in close contact with each other by vacuum suction from the air intake / exhaust port, and release of compressed air from the air intake / exhaust port after magnetic transfer releases the close contact between the slave disk and master disk. can do. The release of adhesion due to the supply of compressed air is made by the gas entering between the slave disk and the master disk.However, if the flow rate of the invading gas increases due to an increase in the pressure supply pressure, the disk will vibrate. Since the slave disk and the master disk are pulled apart when the supply pressure reaches a predetermined pressure lower than the pressure at which the disk generates vibrations, vibrations can be prevented.
[0009]
In the above configuration, the control means performs control to stop the pressure air supply from the pressure air supply means when the pressure information from the pressure detection means becomes a predetermined pressure lower than the pressure that becomes a flow rate that generates vibration of the disk. The compressed air supply can be stopped before the pressure of the gas entering between the slave disk and the master disk reaches the compressed air supply pressure at which the disk generates vibrations, thereby preventing the occurrence of vibrations.
[0010]
Further, by providing the master disk holding means with a buffering means having a buffering effect in the facing direction to the slave disk, the damper effect acts on the master disk holding means and the occurrence of vibration can be suppressed. Further, the buffer means can suppress the master disk from being damaged by an impact at the time of contact with the slave disk.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
[0012]
In the present embodiment, a magnetic disk applied to a hard disk device is used as a slave disk 1, and the transfer information is magnetically transferred from a master disk 2 on which transfer information is recorded to the slave disk 1. In addition, the same code | symbol is attached | subjected to the component which is common in a conventional structure.
[0013]
In FIG. 1, a holder (master disk holding means) 4 attached to a linear slider (advance / retreat driving means) 6 sucks and holds the master disk 2 by vacuum suction from its suction port 4a. The slave disk 1 is vacuum-sucked from its suction port 3a by a suction head (slave disk holding means) 3 in which a central hole 1a is formed at the center and a hollow portion 3c is formed in the central hole 1a. Is held by adsorption.
[0014]
When the suction head 3 holding the slave disk 1 moves the slave disk 1 to a predetermined position facing the master disk 2 as shown in FIG. 1, the linear slider 6 moves the holder 4 forward to move the master disk 2. A face-to-face contact with the slave disk 1 is made . When facing contact with the slave disk 1 advancing movement of the master disc 2 is completed, opening the suction solenoid valve 21 connected to a vacuum suction means (not shown), the vacuum suction force is the hollow from the air suction and discharge port 3b Since the master disk 2 is sucked from the central hole 1a of the slave disk 1 over the portion 3c, the master disk 2 is in close contact with the slave disk 1. Since this vacuum suction is maintained for a predetermined time required for magnetic transfer, the transfer information recorded on the master disk 2 is magnetically applied to the slave disk 1 by applying an external magnetic field while the slave disk 1 and the master disk 2 are in close contact with each other. Transcribed.
[0015]
After the elapse of a predetermined time, the suction electromagnetic valve 21 is closed to stop the vacuum suction, and at the same time, when the opening electromagnetic valve 22 connected to the compressed air supply means (not shown) is opened, the compressed air is discharged from the intake / exhaust port 3b to the hollow portion 3c. The compressed air enters between the slave disk 1 and the master disk 2 through the central hole 1a of the slave disk 1 and separates the slave disk 1 and the master disk 2 from the close contact state. The compressed air supply pressure, supply takes the time required to reach a steady state from the start, take longer pressure supply time in order to perform adequately the disconnection of the slave disk 1 and the master disk 2 as in the prior art If, to increase the flow rate flowing between the slave disk 1 and the master disk 2 to rise pneumatic pressure therebetween, that occur vibration of the disk is caused by venturi effect, as described above.
[0016]
In this embodiment, pressure air supply stopped in a short time when the contact with the slave disk 1 and the master disk 2 is opened by the compressed air supply, separate the master disk 2 from the slave disk 1 by driving of the linear slider 6. Drive timing of the rectilinear slider 6, by the pressure switch 23 disposed in the compressed air supply path as shown in FIG. 1, it detects the predetermined pressure pressure lower than the flow rate to become compressed air pressure that generates vibrations of disk When a predetermined compressed air pressure is detected by the pressure switch 23, the rectilinear slider 6 is moved backward by the control of the control unit 25. Further, when a predetermined compressed air pressure is detected by the pressure switch 23, the opening electromagnetic valve 22 may be controlled to be closed by the control unit 25, and the compressed air supply is stopped before the flow rate at which vibration is generated. Therefore, the holder 4 can be moved backward by the rectilinear slider 6 so that the slave disk 1 and the master disk 2 can be separated.
[0017]
Holder 4 in the magnetic transfer apparatus described above may be configured to provide a buffering mechanism, as shown in FIG. In the holder 24 shown in FIG. 2 , a cylindrical portion 31 extending from the suction portion 30 that sucks the master disk 2 toward the suction port 24 a is slidably supported by the fixing portion 32. A spring 33 (buffer means) is disposed between the spring 32 and the spring 32. Due to the structure of the holder 24, a damper effect acts on the master disk 2, and vibration is less likely to occur. By applying the holder 24 to the magnetic transfer apparatus shown in FIG. 1, a damper effect is added and vibration of the disk can be more effectively prevented.
[0018]
The same effect can be obtained even if the spring 33 is made of an air damper or an elastic material. Further, the buffering action of the holder 24 can alleviate the impact when the master disk 2 is brought into contact with the slave disk 1 and can prevent the master disk 2 from being damaged by the impact.
[0019]
【The invention's effect】
As described above, according to the present invention, the master disk and the slave disk can be brought into close contact with each other by vacuum suction, high-quality magnetic transfer can be performed, and the close contact state can be released by supplying compressed air, resulting in damage to the master disk. In addition, the vibration of the disc that occurs with the supply of compressed air can be prevented with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a main configuration of a magnetic transfer apparatus according to an embodiment.
FIG. 2 is a configuration diagram showing an embodiment of a holder.
FIG. 3 is a configuration diagram showing a main configuration of a conventional magnetic transfer apparatus.
[Explanation of symbols]
1 Slave disk 1a Center hole 2 Master disk 3 Suction head (slave disk holding means)
4, 24 Holder (Master disk holding means)
6 Straight slider (advance / retreat drive)
21 Solenoid valve for suction 22 Solenoid valve for opening 23 Pressure switch (pressure detection means)
25 Control unit (control means)

Claims (5)

In a magnetic transfer method in which a master disk without a hole in the center and a slave disk with a center hole in the center are brought into close contact with each other and the transfer information recorded on the master disk is magnetically transferred to the slave disk.
A slave disk and a master disk that are held by slave disk holding means that holds the slave disk and has a hollow portion that opens to the center hole, and has an intake / exhaust port that opens to suck and exhaust the hollow portion. Is transferred to the slave disk by vacuum suction from the intake / exhaust port, and the master disk is in close contact with the slave disk. The master disk and the slave disk are separated when the pressure of the hollow portion due to the supply of compressed air becomes a predetermined pressure lower than the pressure that causes the vibration of the disk. Magnetic transfer method. The magnetic transfer method according to claim 1, wherein when the pressure of the hollow portion by the compressed air supply becomes a predetermined pressure lower than a pressure that is a flow rate for generating vibration of the disk , the compressed air supply is stopped. In a magnetic transfer device that magnetically transfers transfer information recorded on a master disk by closely contacting a master disk without a hole at the center and a slave disk provided with a center hole at the center,
Slave disk holding means that holds the slave disk and has a hollow portion that opens to the center hole, and has an intake / exhaust port that opens to suck and exhaust the hollow portion, and a master that holds the master disk The disk holding means, the master disk holding means or the slave disk holding means are moved forward and backward in the direction in which the master disk and the slave disk are in contact with each other, and the transfer information recorded on the master disk is magnetically transferred to the slave disk. and magnetic transfer means, a vacuum suction means for adhering the master disk to the slave disk by vacuum suction to the hollow portion from the suction-exhaust opening, the slave disk by releasing pressure on the hollow portion from the suction-exhaust opening compressed air supply means for releasing the close contact between the master disk A pressure detecting means for detecting the pressure of the hollow portion by the compressed air supplied by the compressed air supplying means, pressure information from the pressure detecting means becomes a predetermined pressure lower than the flow rate to become pressure that generates vibrations of the disk And a control means for operating the forward / backward drive means in a direction to separate the master disk and the slave disk. 4. The magnetic transfer apparatus according to claim 3, wherein the control means stops the supply of compressed air from the compressed air supply means when the pressure information from the pressure detection means reaches a predetermined pressure lower than the pressure at which the flow rate causing the vibration of the disk is generated .   5. The magnetic transfer apparatus according to claim 3, wherein the master disk holding means is provided with buffer means having a buffer effect in a direction facing the slave disk.

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