JP2001052320A - Apparatus and method for aging of magnetic head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for the aging of a magnetic head, in which an aging test can be performed at comparatively low cost and with certainty. SOLUTION: There are provided a driving source 10 is provided, a moving body 12 which holds a magnetic head H1, and a magnetic head H2 so as to be freely detachable. A motion conversion mechanism part 14, by which the magnetic heads H1, H2 are brought into contact with a disk-like magnetic recording medium back and forth by converting the rotating operation of the driving source 10 into the linear back-and-forth motion of the moving body 12 is provided. A guide part 16, which guides the moving body 12 when the moving body 12 performs its linear back-and-forth motion, is provided.

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 information on a disk-shaped information recording medium or reproducing information on the disk-shaped information recording medium while contacting the magnetic head with the disk-shaped magnetic recording medium. The present invention relates to a magnetic head aging apparatus and a magnetic head aging method for testing the durability of a magnetic head.

[0002]

2. Description of the Related Art A magnetic head for reproducing information recorded on a magnetic recording medium in the form of a disk, for example, a magnetic disk such as a floppy disk or a hard disk, and for recording information on the magnetic disk is a magnetic recording / reproducing medium. This is set in the device. This type of magnetic head is
When a magnetic recording / reproducing apparatus is developed, an aging test called severe head seek aging is performed in order to improve the durability of the magnetic head. In this seek aging test, in order to check that the magnetic head moves while contacting the surface of the magnetic disk and that the magnetic head is worn, the degree of deterioration of the reproduction output signal of the information output by the magnetic head is checked. To check.

[0003] As this kind of aging test method,
(1) There is a method of preparing many drives of a completed magnetic recording / reproducing apparatus and performing an aging test while bringing a magnetic head into contact with a magnetic disk in the drives. (2) Also, a voice coil motor (VCM) dedicated to the aging test is prototyped, and the magnetic head is slid in a substantially fan-shaped manner at a predetermined angle with respect to the magnetic disk using this voice coil motor. There is also a method of performing an aging test while contacting the magnetic disk with a magnetic disk.

[0004]

However, in the aging test method (1) described above, the drive of the magnetic recording / reproducing apparatus on which the magnetic head is mounted is not often completed in the initial stage of the development of the magnetic head. Such an aging test method is practically impractical. In the aging test method of (2), a driver for controlling the voice coil motor needs to be prototyped in addition to the voice coil motor, and there are unsolved problems such as durability and accuracy of the voice coil motor itself. This voice coil motor is not suitable for performing a high-accuracy aging test of a magnetic head. Further, in the voice coil motor, the attitude of the magnetic head may change during the movement in order to provide a gap between the fixed guide shaft and the sliding bearing of the moving part. If the attitude of the magnetic head changes as described above, an aging test performed while the magnetic head slides on the disk cannot be accurately performed.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic head aging apparatus and a magnetic head aging method that can solve the above-mentioned problems and perform an aging test at a relatively low cost and reliably.

[0005]

According to a first aspect of the present invention, there is provided a magnetic head for recording information on a disk-shaped magnetic recording medium or reproducing information from the disk-shaped magnetic recording medium. An aging device for a magnetic head for testing durability of the magnetic head while being in contact with a magnetic recording medium, a driving source, a moving body for detachably holding the magnetic head, and rotation of the driving source. A motion conversion mechanism for converting the operation into a linear reciprocating motion of the moving body to reciprocally contact the magnetic head with the disk-shaped magnetic recording medium; and An aging device for a magnetic head, comprising: a guide unit for guiding the moving body.

[0006] In the first aspect, the moving body detachably holds the magnetic head. The motion conversion mechanism converts the rotational operation of the drive source into a linear reciprocating operation of the moving body so that the magnetic head can reciprocate and contact the disk-shaped magnetic recording medium. The guide unit guides the moving body when the moving body reciprocates linearly. Accordingly, the moving body performs a linear reciprocating motion by the motion converting mechanism while being guided by the guide portion, so that the aging test by the linear reciprocating motion can be performed while the magnetic head is in contact with the disk-shaped magnetic recording medium. . Since the structure is simple, it is inexpensive, and an aging test of many magnetic heads can be performed by replacing the magnetic head held by the moving body.

According to a second aspect of the present invention, in the aging apparatus for a magnetic head according to the first aspect, there is provided a counting section for counting the number of reciprocating movements of the magnetic head. In the second aspect, the counting section counts the number of reciprocating movements of the magnetic head. Thereby, the number of reciprocating movements in the aging test of the magnetic head can be grasped. For example, when the number of reciprocating movements exceeds a predetermined number of times,
The aging test can be stopped.

According to a third aspect of the present invention, in the aging apparatus for a magnetic head according to the first aspect, a track is previously formed on the disk-shaped magnetic recording medium, and the magnetic head is reciprocated when the magnetic head reciprocates. A reproducing output signal confirming unit for confirming deterioration of a reproducing output signal of the magnetic head caused by the head crossing the track; According to the third aspect of the present invention, by using the track formed in advance on the disk-shaped magnetic recording medium, it is possible to confirm the deterioration of the reproduction output signal of the magnetic head caused by crossing the track when the magnetic head reciprocates. Further, it is possible to grasp the deterioration of the reproduction output signal in the aging test of the magnetic head.

According to a fourth aspect of the present invention, in the aging apparatus for a magnetic head according to the first aspect, the motion conversion mechanism section includes: a disk that rotates by rotation of an output shaft of the drive source;
A rod for converting the rotational movement of the disk into a linear movement to linearly move the moving body.

According to a fifth aspect of the present invention, a magnetic head for recording information on a disk-shaped magnetic recording medium or reproducing information from the disk-shaped magnetic recording medium is brought into contact with the disk-shaped magnetic recording medium. While aging method of the magnetic head for testing the durability of the magnetic head,
By converting the rotational motion generated by the driving source into a linear reciprocating motion of a moving body, the magnetic head reciprocates and comes into contact with the disk-shaped magnetic recording medium, thereby deteriorating a reproduction output signal output by the magnetic head. The aging method for a magnetic head is characterized by confirming the following.

According to the fifth aspect, since the moving body performs a linear reciprocating motion, the magnetic head contacts the disk-shaped magnetic recording medium to confirm the deterioration of the reproduction output signal,
An aging test by a linear reciprocating motion of the magnetic head can be performed. Since the structure is simple, it is inexpensive, and an aging test of many magnetic heads can be performed by replacing the magnetic head held by the moving body.

According to a sixth aspect of the present invention, in the aging method of the magnetic head according to the fifth aspect, the number of reciprocating movements of the magnetic head is counted by counting the number of reciprocating movements of the magnetic head. The drive source is stopped at the time of the start. In claim 6, the counting section counts the number of reciprocating movements of the magnetic head. Thus, the number of reciprocating movements in the aging test of the magnetic head can be grasped, and when the number of reciprocating movements exceeds a predetermined number of times, the aging test can be stopped.

According to a seventh aspect of the present invention, in the aging method for a magnetic head according to the fifth aspect, a track is previously formed on the disk-shaped magnetic recording medium, and the magnetic head is reciprocated when the magnetic head reciprocates. The deterioration of the reproduction output signal of the magnetic head caused by the head crossing the track is confirmed. According to a seventh aspect of the present invention, by using a track formed in advance on a disk-shaped magnetic recording medium, deterioration of a reproduction output signal of the magnetic head caused by crossing the track when the magnetic head reciprocates is confirmed. Further, it is possible to grasp the deterioration of the reproduction output signal in the aging test of the magnetic head.

[0014]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the embodiments described below are preferred specific examples of the present invention,
Although various technically preferable limits are given, the scope of the present invention is not limited to these modes unless otherwise specified in the following description.

1 to 3 show a preferred embodiment of an aging device for a magnetic head according to the present invention. In FIG. 1, an aging device for a magnetic head includes a magnetic head for recording information on a disk-shaped magnetic recording medium (hereinafter referred to as a magnetic disk) D and reproducing information from the magnetic disk D. This is for testing the durability of the magnetic head while contacting the magnetic head. As shown in FIG. 1, the aging apparatus 1 generally includes a motor 10 as a driving source, a moving body 12, a motion conversion mechanism 14, a cross roller table 16 as a guide, and the like.

The motor 10 is mounted on a bracket 18 as shown in FIGS. Bracket 18 is fixed to base 20. The base 20 forms a space between the base 20 and the bracket 18, and the motion conversion mechanism 14 is arranged in this space. The base 20 is mounted on the position adjusting portion 24 side of the mounting portion 22 so that the position can be adjusted in the Z direction. Therefore, the base 20 can be moved and adjusted with respect to the mounting portion 22 in the Z direction as needed. Further, the mounting portion 22 includes a base 26
Can be moved in the X direction to adjust the position. As the motor 10, for example, a direct current motor (DC motor) can be used, and has a capability of rotating at a cycle necessary for aging of the magnetic head.

The moving body 12 is a cross roller table 1
6 slidably holds in the X direction. The cross roller table 16 is mounted on a base 20. The moving body 12 includes a reciprocating member 40, a mounting portion 42, a blocking plate 44, a connect pin 46, and the like. The mounting portion 42 is fixed to one end of the reciprocating member 40, and the mounting portion 42 can detachably hold the suspension arms 30, 32 of the magnetic head H1 and the magnetic head H2, respectively. That is, the suspension arm 30 is detachably fixed to the upper base 42A of the mounting portion 42 by the connect pin 42B. The suspension 32 is detachably fixed to the lower base 42C of the mounting portion 42 using a connect pin 42D. The magnetic heads H1 and H2 face each other at a predetermined interval.

The blocking plate 44 is fixed to the upper surface of the reciprocating member 40. The connecting pin 46 is vertically fixed on the reciprocating member 40. The base 20 has side plates 50 and 52. The side plate 50 holds a light receiving unit 54, and the side plate 52 holds a light emitting unit 56. For example, a light emitting diode can be used as the light projecting unit 56, and a photodiode can be used as the light receiving unit 54. The light emitting unit 56 and the light receiving unit 54 are arranged to face each other. When the reciprocating member 40 reciprocates in the X direction, the blocking plate 44 blocks the light L output from the light projecting unit 56 so that the light receiving unit 54 cannot receive the light L.

Next, the motion conversion mechanism 14 will be described. The motion conversion mechanism 14 has a crank plate 60 and a connect rod 62. Crank plate 60
Has a disk shape, and the output shaft 10 </ b> A of the motor 10 is fixed to the center of the crank plate 60. When the motor 10 operates, the crank plate 60 rotates continuously. The crank plate 60 is connected to the connect pin 6.
The connecting pin 64 is connected to one end of the connecting rod 62. Connect rod 62
Bearing 66 rotatably supports one end of the connect pin 64. A bearing 68 at the other end of the connecting rod 62 rotatably supports one end of the connecting pin 46 of the reciprocating member 40. Crank plate 6
When 0 is rotated by the output shaft 10A of the motor 10, the connecting rod 62 converts the rotational movement of the crank plate 60 into a linear movement, and causes the reciprocating member 40 of the moving body 12 to linearly reciprocate along the X direction. is there.

As shown in FIG. 2, the magnetic disk D is detachably supported by a support section 70. The magnetic disk D is continuously rotated by the operation of the spindle motor 72. As shown in FIG. 1, the magnetic head H1 contacts the upper surface of the magnetic disk D, and another magnetic head H2.
Contacts the lower surface of the magnetic disk D.

The aging apparatus 1 shown in FIGS. 1 to 3 is an apparatus for aging the magnetic heads H1 and H2 while contacting them along the X direction (radial direction) of the magnetic disk D. The magnetic heads H1 and H2 which move while contacting this type of magnetic disk D in a linear direction can be applied to, for example, a magnetic disk recording / reproducing apparatus as shown in FIG. The magnetic disk recording / reproducing apparatus shown in FIG. 7 includes a base portion 200, a head carriage assembly 201, a stepping motor assembly 202, a disk holder assembly 203, a side plate 205 for ejecting a disk, and a substrate for exchanging data with an external device. 207, a drive board 208, a shaft 213 for guiding the movement of the head carriage, a cover 219, a front panel 220, an eject button 221 for a magnetic disk, and the like. Head carriage assembly 2
Numeral 01 is reciprocally movable in the X direction along the shaft 213 by the stepping motor assembly 202. The head carriage assembly 201 is configured to linearly reciprocate the magnetic head in the X direction. An apparatus for performing an aging test on the magnetic heads H1 and H2 used in such a magnetic disk recording / reproducing apparatus is shown in FIGS.
It is the aging device 1 of FIG.

FIG. 4 shows an example of a system configuration of an aging apparatus including the aging apparatus 1 shown in FIGS. 4, a motor 10, a magnetic disk D, a spindle motor 72 for the magnetic disk D, and magnetic heads H1 and H
2, suspensions 30, 32, etc. are shown. The spindle motor 72 for rotating the magnetic disk D, which is a medium, receives a command signal S from the motor controller 110.
1 driven. The command signal S1 from the motor controller 110 supplies U, V, and W phase waveforms. When the command signal S1 is supplied to the motor 72, the spindle motor 72 sends a signal PG to the motor controller 110. And the signal FG. The signal PG (phase generation signal) and the signal FG (frequency generation signal)
For obtaining the servo control and the rotation reference. That is, the signal PG is a signal that determines a reference during one rotation, and is generated only once during one rotation of the rotor. Signal FG
Are a plurality of signals generated during one rotation so as not to improve the accuracy of servo control.

The moving body 12 is also called a head shuttle, and reproduction output signals obtained from the magnetic heads H1 and H2 of the moving body 12 are supplied to an amplifier 114 and amplified. The power supply 116 supplies power to the control unit 118. The control unit 118 supplies power and a control signal S2 to the amplification unit 114. The motor 10 has an encoder 120, and the encoder 120 supplies a signal PG1 and a signal FG1 corresponding to the rotation angle of the motor 10 to the shuttle driver 124. Shuttle driver 12
The signal PG1 (phase generation signal) supplied to 4 is a signal that determines only one reference in one rotation during the rotation before the conversion into the reciprocation. The signal FG1 (frequency generation signal) is a signal for improving the accuracy of the rotation servo control.
These are a plurality of signals generated during rotation. Shuttle driver 1
24 supplies the command signal S3 to the motor 10 so that the motor 10 rotates.

The motor controller 110 has a display unit 110
A, and the display unit 110A displays the number of rotations of the magnetic disk D by the motor 72. The shuttle driver 124 also has a display unit 124A, and the display unit 124A can display the number of times the moving body 12 reciprocates in the X direction. That is, when the reciprocating member 40 of FIG. 1 reciprocates in the X direction and the blocking plate 44 blocks the light L of the light projecting unit 56, the counting unit 130 illustrated in FIG. .
The number of reciprocating movements counted by the counting unit 130 can be digitally displayed as the number of times on the display unit 124A. The signal PG and the signal FG of the motor controller 110 are supplied to the control unit 118. Further, the shuttle driver 124 supplies the signal to the gate circuit 141 of the reproduction output signal confirmation unit 140.

A waveform generator 150 and a reproduction output signal checker 140 are connected to the amplifier 114. Waveform generator 1
Reference numeral 50 denotes a single pulse-like write signal WS for the amplifier 11
4, the amplifying unit 114 can perform writing on the magnetic disk D with respect to the magnetic heads H1 and H2. Conversely, when a reproduction output signal of the magnetic disk D is obtained by the magnetic heads H1 and H2, the reproduction output signal is amplified by the amplification unit 114 and then supplied to the reproduction signal confirmation unit 140. This reproduction output signal RS
Is supplied to the gate circuit 141 of the reproduction output signal confirmation unit 140. The gate circuit 141 is supplied with signals FG1 and PG1 from the shuttle driver 124. Thus, the gate circuit 141 can display the reproduced output signal RS in synchronization with the signals FG1 and PG1 by the measuring instrument 145 such as an oscilloscope or a spectrum analyzer.

FIG. 5 shows a magnetic disk D, which is a medium, on which one recording track 300 is formed in advance, for example. Moving body 12
Magnetic head H1 contacts the upper surface 320 of the magnetic disk D, and the other magnetic head H2
Contacts the lower surface 330 of the light emitting element. These magnetic heads H1, H
2 is reciprocated between the shuttle range (movement range) T by the moving body 12.

Next, an example of aging a magnetic head using the system of the aging apparatus 1 will be described. The motor 72 in FIG.
The motor rotates continuously according to a command signal S1 from the control unit 10. Thus, the magnetic disk D continuously rotates in the R direction at, for example, 4800 rpm. The signal PG is output from the spindle motor 72.
Signal FG enters the motor controller 110.

On the other hand, when the command signal S3 is supplied from the shuttle driver 124 to the motor 10, the moving body 12, also called a shuttle device, reciprocates in the X direction in FIG. That is, the output shaft 1 of the motor 10 of FIG.
By continuous rotation of the crank plate 60 at 0A, the connecting rod 62 is converted into reciprocating motion in the X direction with respect to the reciprocating member 40 via the connecting pins 64 and 46. Accordingly, the reciprocating member 40 of the moving body 12 reciprocates in the X direction, and accordingly, the magnetic heads H1 and H2 reciprocate in the X direction. The range of the reciprocating motion in this case is a shuttle range T as shown in FIG.
Reciprocating within a reciprocating movement range referred to as "recording track 300", and crosses the recording track 300 on the way. When the reciprocating member 40 in FIG. 1 reciprocates in the X direction, the blocking plate 44 blocks the light L from the light projecting unit 56. The light receiving unit 54
The number of reciprocations of the reciprocating member 40 is supplied to the counting unit 130 of the shuttle driver 124 as a reciprocating count pulse MP shown in FIG. As a result, the number of reciprocations is displayed on the display section 124A of the shuttle driver 124. When the number of reciprocations on the display section 124A exceeds a preset number of reciprocating movements, the shuttle driver 124 stops the command signal S3 for the motor 10 and stops the rotation of the motor 10. Alternatively, the shuttle driver 124 has a function of stopping the reciprocation of the magnetic heads H1 and H2 when an overcurrent is applied to the reciprocating portion.
That is, the current flowing through the motor 10 is measured by a sensor incorporated in the circuit, and the drive is shut down when a current equal to or more than a certain set value flows. Further, as shown in FIG. 4, the motor controller 110 and the shuttle driver 124
When the number of reciprocations exceeds a preset number of times or when an overcurrent is applied to the reciprocating portion, the operation of the spindle motor 72 is also stopped, and the rotation of the magnetic disk D is simultaneously stopped. It is also possible.

As shown in FIG. 5, for example, one or more recording tracks 300 as shown in FIG. 5 are formed in advance between the inner diameter portion and the outer diameter portion of the magnetic disk D.
The recording track 300 is a single-wavelength inspection track, and the inspection track is formed by the magnetic heads H1 and H2.
The reproduced output signal and the C / N (carrier / noise) when the signal crosses are measured. This C / N is the ratio of the noise in the vicinity to the output of the recording wavelength of the single wavelength signal to be recorded. When the recording track 300 is recorded on the magnetic disk D, the write signal WS, which is a single pulse, is supplied from the waveform generation unit 150 shown in FIG. The recording tracks 300 shown in FIG. 5 can be recorded on the magnetic disk D using the heads H1 and H2.

The switching of signals of the magnetic heads H1 and H2 and the generation of recording timing, that is, the magnetic disk D
The timing at which the recording track 300 is formed for one round from a certain point on the circumference of the circle is generated from the motor controller 110 shown in FIG.
G and the signal FG are supplied, and the control unit 118 sends the signal PG and the signal FG to the amplifying unit 114 as the control signal S2. Shuttle experiment in aging test,
That is, when the moving body 12, also called a shuttle device, reciprocates in the X direction, the magnetic heads H1 and H2
Reciprocates across the recording track 300 of FIG. At this time, the reproduction output signal RS related to the recording track 300 is supplied to the gate circuit 14 via the amplifier 114.
1 is supplied.

FIG. 6A shows the signal PG1 of the moving body 12.
5 shows an example of the signal FG1 of the moving body 12, the reproduction output signal RS of the magnetic head, and the reproduction output signal RSE of the magnetic head after aging. The signal PG1 of the moving body 12 shown in FIG. 6A is output each time the magnetic heads H1 and H2 make one round trip in the shuttle range T of FIG. FIG. 6 (B)
The signal FG1 of the moving body 12 is one round trip (2
It is output a predetermined number of times during T).

The reproduced output signal R of the magnetic head shown in FIG.
S is a signal before aging, and the reason why the reproduced output signal RS is not a rectangle but a rhombus is to cross the recording track 300 in FIG. During the course of the shuttle aging test, the reproduced output signal RS is monitored by the measuring device 145 of each reproduced signal confirmation unit 140 in FIG.
It is possible to monitor the reproduced output signal RSE indicating the deterioration of the reproduced output signal RS due to an abnormality occurring in 1, H2, for example, due to the progress of wear or the like. As a result, it is possible to easily monitor the deterioration of the reproduction output signal of the magnetic head. At this time, in order to prevent the reciprocating movement of the magnetic head and the rotation of the magnetic disk D from synchronizing and following the same locus, that is, in order to scan the circumference of the magnetic disk D evenly, FIG. It is preferable that the number of revolutions of the spindle motor 72 does not become an integral multiple of the reciprocating frequency of the magnetic heads H1 and H2. For example, when the rotation speed of the spindle motor 72 is, for example, 1800 rpm
At m (30 rps), the shuttle frequency may be shifted to 5.999 rps.

In order to see only the reproduction output signal RS of the magnetic head at the moment of crossing the recording track 300 in FIG. 5, a gate signal is generated from the signals PG1 and FG1 of the motor 10 and supplied to the gate circuit 141. As a result, only the reproduction output signal RS at the moment of crossing the recording track 300 is enlarged, and the measuring device 14 of the reproduction signal confirmation unit 140 shown in FIG.
Observation can be reliably performed on the screen 5. By inputting such a signal of the gate circuit 141 to, for example, a spectrum analyzer as the measuring instrument 145, C / N can be measured.

In the development of a magnetic disk drive, when performing an aging test indispensable for improving the durability of a magnetic head, a spindle motor that rotates at a cycle necessary for aging is provided, and a rotational motion is converted into a reciprocating motion. It is necessary to have a highly accurate linear motion guide to have a crank mechanism and perform reciprocating motion with high accuracy. Further, it is preferable to have a circuit for detecting a system halt by detecting an overload at the time of seeking, and to provide a gate circuit for reproducing and seeking deterioration of several tracks on a disk prepared in advance as an experimental method. As a result, a severe seek aging test can be performed on many magnetic heads at low cost.

When performing an aging test indispensable for improving the durability of the head in the development of the magnetic disk drive, the rotational motion is changed to a linear motion by a crank mechanism and reciprocated along an accurate linear motion guide. ,
Severe seek aging can be realized in large quantities at low cost. By using the linear motion guide with higher accuracy than using the conventional voice coil motor, it is possible to perform aging with high accuracy and obtain an experimental result with high accuracy. Aging considerations can be realized in large quantities at low cost. The period and amplitude can be made by some design changes. Anomalies between the head and the media due to aging can be easily detected.

Conventionally, a large number of finished drives have been used,
When aging is performed, this can be realized by reciprocating the magnetic head by rotating the motor forward and reverse to reciprocate a certain track from a certain track on the medium. However, the manufacture of such a drive is very expensive. In addition, in aging the head shuttle, it is not known whether the drive prototyped in front of the head is aged or the drive is aged or the head is aged. The present invention can solve such a problem.

The application of the magnetic head aging device of the present invention is not limited to a magnetic head for a floppy disk drive, but can also be applied to a magnetic head for a hard disk drive or other types of magnetic heads.

[0038]

As described above, according to the present invention,
The aging test can be performed relatively inexpensively and reliably.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of an aging device of the present invention.

FIG. 2 is a side view of the aging device.

FIG. 3 is a plan view of the aging device.

FIG. 4 is a system configuration diagram of an aging device.

FIG. 5 is a diagram showing an example of a recording track formed on a magnetic disk.

FIG. 6 is a diagram showing an example of a reproduction output signal of the magnetic head and a reproduction output signal of the magnetic head after aging.

FIG. 7 is an exploded perspective view showing an example of a magnetic disk recording / reproducing apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Aging device, 10 ... Motor (drive source), 12 ... Moving body, 14 ... Motion conversion mechanism part,
16 Cross roller table (guide unit), 44
..Blocking plate, 56 ... light emitting unit, 54 ... light receiving unit, 60 ... crank plate, 62 ... connect rod, 130 ... counting unit, 140 ... reproduction signal confirmation unit, D: magnetic disk, H1: magnetic head, H2: magnetic head

Claims (7)

[Claims] 1. A magnetic head for recording information on a disk-shaped magnetic recording medium and reproducing information from the disk-shaped magnetic recording medium, while contacting the disk-shaped magnetic recording medium with the magnetic head. An aging device for a magnetic head for testing durability, a driving source, a moving body for detachably holding the magnetic head, and a rotation operation of the driving source converted into a linear reciprocating motion of the moving body. A motion conversion mechanism for causing the magnetic head to reciprocally contact the disk-shaped magnetic recording medium, and a guide for guiding the moving body when the moving body reciprocates linearly. An aging device for a magnetic head, comprising: 2. The aging device for a magnetic head according to claim 1, further comprising a counting unit for counting the number of reciprocating movements of the magnetic head. 3. A track is formed on the disk-shaped magnetic recording medium in advance, and deterioration of a reproduction output signal of the magnetic head caused by the magnetic head crossing the track when the magnetic head reciprocates. 2. The aging device for a magnetic head according to claim 1, further comprising a reproduction output signal confirmation unit for confirming the reproduction output signal. 4. The motion conversion mechanism unit includes: a disk that rotates by rotation of an output shaft of the drive source; a rod that converts a rotational motion of the disk into a linear motion to linearly move the moving body; The aging device for a magnetic head according to claim 1, further comprising: 5. A magnetic head for recording information on a disk-shaped magnetic recording medium or reproducing information on the disk-shaped magnetic recording medium, while contacting the disk-shaped magnetic recording medium with the magnetic head. A method for aging a magnetic head for testing durability, wherein the magnetic head is reciprocated to the disk-shaped magnetic recording medium by converting a rotary motion generated by a driving source into a linear reciprocating motion of a moving body. Aging the magnetic head by contacting the magnetic head to check deterioration of a reproduction output signal output from the magnetic head. 6. The driving source is stopped when the number of reciprocating movements of the magnetic head is counted, and the number of reciprocating movements of the magnetic head exceeds a preset number of reciprocating movements.
3. The method of aging a magnetic head according to item 1. 7. A track is formed on the disk-shaped magnetic recording medium in advance, and the reproduction output signal of the magnetic head deteriorates when the magnetic head crosses the track when the magnetic head reciprocates. 6. The method of aging a magnetic head according to claim 5, wherein: