JP2836712B2 - Information recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a replaceable cartridge containing a disk-shaped recording medium such as a cartridge for a magneto-optical disk, and has a floating head such as a floating magnetic head to record and reproduce information. The present invention relates to an information recording / reproducing apparatus for performing the above, and particularly to loading and unloading of the cartridge.

[0002]

2. Description of the Related Art In the field of magnetic disk drives which have already been widely used, a flying head using a magnetic material having a higher coercive force has been adopted in order to improve the recording density. In addition, in the field of magneto-optical disk drives, which have been actively developed in recent years and are in the stage of commercialization, a magnetic field modulation method using a floating head is also expected as a method for realizing direct overwrite. ing.

In a typical floating head, a magnetic head and a slider formed integrally are supported by a suspension composed of a leaf spring or the like, and a CSS (Contact Start
andStop). CSS
According to this method, the flying type head causes the slider to fly by the lift given from the air flow only when the disk is rotating, and to land on the disk surface when the disk is stationary. The flying height of the flying head is adjusted by changing the elastic force of the suspension to press the slider against the disk surface with respect to the lift obtained by the slider. When a resin such as polycarbonate is used for the disk substrate, there is a drawback that the surface runout during rotation is larger than that of a glass substrate due to molding distortion, etc., but the floating type head follows such surface runout to some extent and has sufficient There is an advantage that the minute flying height at which the magnetic field strength can be obtained can be kept substantially constant.

[0004] However, the above-mentioned conventional flying type head has C
There are problems such as abrasion or damage of the disk and the head due to repetition of the SS operation, and a problem of attracting the floating type head to the disk which is more likely to occur as the smoothness of the disk surface is improved.

[0005] In order to solve the above-mentioned problem of the suction, a method of applying a special texture treatment to the disk surface or applying a lubricant has been attempted. Research has been conducted on non-contact operation with respect to (for example, (1)
An experiment on landing on / off floating head slider: Yasuda, Kaneko; 1989 IEICE Spring National Convention, (2) Landing on / off characteristics of spherical machining floating head slider: Yasuda, Kaneko; 1990 IEICE Spring National Convention).

[0006]

However, research on the non-contact operation of a flying head has just begun.
In particular, there are many problems to be solved in practical use in a disk recording / reproducing apparatus capable of loading and discharging a disk.

The present inventors have proposed a disk recording / reproducing apparatus capable of loading and unloading a disk, holding the floating type head at a non-contact position when the disk is stopped, and setting the floating type head immediately after the rotation of the disk is started. We are working hard to develop a technology that allows the disk to approach the surface of the rotating disk and fly without contact.

An object of the present invention is to realize a disk recording / reproducing apparatus having a floating type head which operates without contacting a portable disk to be loaded every time recording, reproducing, or rewriting is performed. It is an object of the present invention to provide techniques of a loading sequence and an unloading sequence for determining how to load a disk into a device and eject a disk from the device.

[0009]

Means for Solving the Problems An information recording and reproducing apparatus according to a first aspect of the invention, in order to solve the above problems, using a replaceable cartridge containing a disc-shaped recording medium, at the time of loading the floating type head, while maintaining the height position not in contact with the recording medium, the cartridge b
From the retracted position away from the loading completion position.
After moving to a vertical position for raising and lowering the head, while is brought closer during the rotation of the recording medium is caused to float over the recording medium, the information recording and reproducing for recording and reproducing information with respect to a spiral or concentric recording tracks An apparatus for loading the cartridge in the direction of the center of the recording medium when loading the cartridge.
A movable body that moves and a drive source that drives the displacement of the movable body
If, moves toward the center of the recording medium in accordance with the movement of the upper Symbol movable member
Move the floating head from the retracted position to the elevating position.
To the feed plate stopped at the elevating position
After stopping the feed plate, move the movable body relative to the feed plate.
Rotated by movement to lower the floating head
Is characterized in Rukoto that have a raising and lowering lever.

[0010] An information recording / reproducing apparatus according to a second aspect of the present invention, in order to solve the above-mentioned problem, has the structure of the first aspect.
Ete, time of loading of the cartridge, in use the end of the unloading or when the above information recording and reproducing apparatus is characterized in that detecting means for detecting that said flying head reaches the retracted position is provided .

According to a third aspect of the present invention, there is provided an information recording / reproducing apparatus which uses a replaceable cartridge containing a disk-shaped recording medium and stops a floating head from rotating the recording medium. At a height that does not come into contact with the recording medium, and while the recording medium is rotating, the floating head approaches the recording medium and floats on the recording medium while recording information on spiral or concentric recording tracks. In an information recording / reproducing apparatus that performs reproduction, when the cartridge is unloaded or when the information recording / reproducing apparatus is used, the flying head is positioned outside the outermost recording track, and the outer diameter position of the recording medium. Second moving means for retreating to a radial position inside, and retreating to a retreat position away from the cartridge while holding the floating head at the above height position A first moving means is provided, and after the floating head is retracted to the above-mentioned radial position by the second moving means, it is retracted to the retracted position while being held at the above-mentioned height position by the first moving means. It is characterized by having

According to a fourth aspect of the present invention, an information recording / reproducing apparatus is provided in addition to the configuration of the third aspect , in order to solve the above problem.
Ete, the floating-type head is characterized that you have provided moving further limitation means for limiting the further flying head so as not to move outward from the radial position of the.

According to a fifth aspect of the present invention, there is provided an information recording / reproducing apparatus characterized in that a linear motor is used as the second moving means of the third aspect.

According to a sixth aspect of the present invention, there is provided an information recording / reproducing apparatus, wherein a stopper of a floating head is used as the limiting means of the fourth aspect.

[0015] The information recording and reproducing apparatus according to the invention of claim 7, in order to solve the above problems, as a second moving means according to claim 4, the linear motor is used, as a limiting means, levitation A stopper for the die head is used, and the floating head is pressed against the stopper by a linear motor until the floating head is held at the above-mentioned height position at the above-mentioned radial position.

[0016]

In accordance with the claim 1 arrangement, using a replaceable cartridge containing a disc-shaped recording medium, the Rohde
At the time of loading , the loading of the cartridge is completed while holding the floating head at a height position that does not contact the recording medium.
Lift the floating head from the retracted position away from the position.
So after moving to a vertical position, while is brought closer during the rotation of the recording medium is caused to float over the recording medium, met the information recording and reproducing apparatus for recording and reproducing information with respect to a spiral or concentric recording tracks A movable body that moves toward the center of the recording medium during loading of the cartridge.
A driving source for driving the movable body to be displaced,
As it moves, it moves toward the center of the recording medium,
Move the mold head from the retracted position to the
The feed plate stopped at the elevation position and after the feed plate is stopped
At the same time, the movable body rotates
And a lifting lever for lowering the floating head.
To Runode, time of loading of the cartridge, in use the end of the unloading operation or the information recording and reproducing apparatus, the flying head does not contact the cartridge. This can prevent the flying head and the cartridge from being damaged.

According to the structure of claim 2, the structure of claim 1
In addition to, upon loading of the cartridge, in use the end of the unloading operation or the information recording and reproducing apparatus, the detection means for detecting that said flying head reaches the retracted position is provided, said In addition to the effect of the first aspect, since it is possible to confirm that the floating head has reached the retracted position, damage to the floating head and the cartridge can be more reliably prevented.

According to the third aspect of the present invention, a replaceable cartridge containing a disk-shaped recording medium is used, and the floating head is held at a height position that does not contact the recording medium when the rotation of the recording medium is stopped. An information recording / reproducing apparatus for recording / reproducing information on a helical or concentric recording track while floating a flying head on a recording medium while approaching the recording medium while the recording medium is rotating. A second movement for retracting the flying head to a radial position outside the outermost recording track and inside the outer diameter position of the recording medium at the time of unloading or at the end of use of the information recording / reproducing apparatus. Means and first moving means for retracting the floating head to a retracted position away from the cartridge while holding the floating head at the above-described height position, and a second moving means After the flying head retracted to the radial position of the by stages, since retract to the retracted position while maintaining the height position of the by the first moving means, the cart
Ridge loading, unloading or information
At the end of use of the information recording / reproducing device, the floating head
No contact with ridge, floating head and cartridge
Damage to the cartridge can be prevented , and the operation of retracting the floating head to the retracted position apart from the cartridge while holding the floating head at the above-described height position can be stably performed.

According to the structure of claim 4, the structure of claim 3
In addition, the above-mentioned floating-type head is provided further moved is limiting means for limiting a further flying head so as not to move outward from the radial position of the Runode, the following claims
In addition to the effect of 3 , the floating head can be reliably retracted to the above radial position.

According to the configuration of claim 5 , the second of claim 3
Since a linear motor is used as the moving means, the operation of causing the flying head to access a desired recording track can be performed by the linear motor in addition to the operation of the above-described claim 3. The recording / reproducing device can be simplified.

According to the configuration of claim 6, as the limiting means according to claim 4, since the stopper flying head is used, in addition to the function of the above claims 4, realizing limiting means with a simple structure it can.

According to the configuration of claim 7, the second claim 4
As a moving means, a linear motor is used, and as a restricting means, a stopper of a floating type head is used, and until the floating type head is held at the above height position at the above radius position, Since the floating type head is pressed against the stopper by the linear motor, in addition to the operation of the above-mentioned claim 4 , the operation of retracting the floating type head to the retracted position away from the cartridge while holding the floating type head at the above height position is further stabilized. Can be done.

[0023]

1 to 19 show an embodiment of the present invention.
This will be described below.

As shown in the plan view of FIG. 1 and the side view of FIG. 2, the magneto-optical disk drive (information recording / reproducing apparatus) of the present embodiment has a thin rectangular parallelepiped shape. A recording medium).

When the upper plate 60 is removed from the main body, the movable integrated head 6 appears as shown in the plan view of FIG. 3 and the side view of FIG. The movable integrated type head 6 is provided on a base 26, and includes an optical head 3 and a floating magnetic head 4.
(Floating type heads) and an arm 5 for connecting and fixing them.

The optical head 3 has an objective lens 2 for converging laser light on a magneto-optical disk, and an actuator 1 for driving the objective lens 2 in a focus direction. The floating magnetic head 4 is adapted to apply a magnetic field to a region on the magneto-optical disk where the laser light is converged while floating at a fixed distance from the magneto-optical disk.
Positioned.

The movable integral type head 6 has a guide shaft 61 so that it can move in the ± X direction (radial direction of the magneto-optical disk).
• supported by a linear motor 64
(Second moving means) can move in the ± X direction along the guide shafts 61. The linear motor 64 includes a driving coil 62 fixed to the movable integrated head 6 and a yoke 63 fixed to the main body.
It consists of 3 mag.

On the base 26, a feeding mechanism (first moving means) for moving the movable integrated type head 6 in the ± X direction separately from the linear motor 64 when loading and unloading the cartridge of the magneto-optical disk. ) And an elevating mechanism for elevating the floating magnetic head 4.

As shown in the plan view of FIG. 5 and the side view of FIG. 6, the feed mechanism includes a motor 20, a feed screw 22 arranged in the X direction, and a rotational speed of the motor 20 for reducing the driving force. It has a gear portion 21 for transmitting to the feed screw 22. The feed screw 22 is screwed to a nut provided on the projection 23a of the movable plate 23, and the movable plate 23 moves in the ± X direction by rotating the feed screw 22.

The movable plate 23 is engaged with a feed plate 25 to which a lifting lever 28 (described later) is attached. That is, the movable plate 23 and the feed plate 25
5 and 33 have been erected, the movable plate 23 with a force of F ₁ +
A spring 34 is attached to the pins 35 and 33 so as to urge in the X direction.

The feed plate 25 is engaged with a base 26. That is, the feed plate 25 to bias the + X direction with a force of F _2, is across pins 33 and base 26 are spring 32 is attached. Here, the spring constant of the spring 34 is set so that F ₁ ≫F _2.
It is set to be sufficiently larger than the spring constant of 2.

As shown in FIGS. 7 and 8, the elevating mechanism comprises pins 27, 27 fixed to the feed plate 25, and pins 2
It has a U-shaped elevating lever 28 that is rotatably mounted around a rotation axis 7 ・ 27.

The lift lever 28 has a guide pin 29 for rotating the lift lever 28 around the pins 27 by sliding along a guide groove 31 formed in the movable plate 23, and a movable integral type. A lock pin 30 for fixing the arm 5 of the head 6 to the elevating lever 28 is provided. Before the cartridge of the magneto-optical disk is inserted into the magneto-optical disk drive, the lift lever 28 is in a state where the flying magnetic head 4 is lifted. Further, the arm portion 5 is formed by the lock pin 30 and the contact portion 37a of the feed plate 25.
, The movable integrated type head 6 is fixed.

In the above-described feed mechanism and elevating mechanism, when the motor 20 is rotated forward, the movable plate 23 and the feed plate 25 move integrally in the −X direction. -After being stopped by hitting 36b, only the movable plate 23 moves in the -X direction. As a result, the guide pin 29 of the lift lever 28 moves up along the guide groove 31, so that the lift lever 28 rotates around the pins 27 and 27, and the floating magnetic head 4 can be lowered onto the magneto-optical disk. .

With the rotation of the elevating lever 28, the lock pin 30 moves to the upper part of the arm 5, and the movable integrated type head 6 can be opened. The movable range of the movable integrated type head 6 in the ± X direction is limited from the contact portion 37b of the elevating lever 28 to the contact portion 37a of the feed plate 25 (restriction means, stopper). Projection 23 of movable plate 23
When the sensor 41 provided on the base 26 detects that a has reached the predetermined position, the motor 20 is stopped, and the movable plate 23 is stopped.

As shown in FIGS. 9 to 11, the cartridge loading mechanism for the magneto-optical disk includes a cartridge holder 9 for holding the cartridge and a moving frame 10 for moving the cartridge holder 9 in the ± X directions.
have.

To guide the cartridge into the magneto-optical disk drive and position the cartridge, two guide pins 14 are attached to the side of the cartridge holder 9. And guide holes 13 for guiding the above-mentioned guide pins 14.
Are provided respectively. Note that a sensor 38 for detecting that a cartridge has been inserted is attached to the back of the bottom surface of the cartridge holder 9.

Guide pins 50 are fixed to the side surface of the chassis 65, and
Guide holes 66 sliding on the guide pins 50 are provided. Further, a gear portion 16 is provided on a side surface of the moving frame 10.
The racks 18 that mesh with each other (described later) are fixed. The fixed frame 12 is screwed to the guide pins 50.

The movable frame 10 and the fixed frame 12 have spring attachment portions 19a, 19a, 19b, 1 respectively.
9b is provided, and the movable frame 10 is pulled in the −X direction by a spring (not shown) applied between the mounting portions 19a and 19b.

As shown in FIGS. 12 to 15, a driving system for moving the moving frame 10 in the ± X direction includes a loading motor 15 mounted on the upper plate 60 and a rotation speed of the motor 15 reduced. The driving force is applied to the rack 18
· It is composed of a gear section 16 for transmitting to the 18. The moving direction of the moving frame 10 is switched by forward / reverse rotation of the motor 15.

The operation of loading and unloading a cartridge in the above-described magneto-optical disk drive will be described with reference to FIGS.
It is as follows.

Before the cartridge is loaded, the floating magnetic head 4 is lifted up, and the movable integrated head 6 is 55 mm from the center of rotation of the spindle motor 39.
(Retracted position, hereinafter referred to as R55).

As shown in FIGS. 16 and 17, when the cartridge is inserted into the magneto-optical disk drive (at time t).
₀ ), the shutter of the cartridge is opened (time t ₁ ).
When the cartridge sensor 38 attached to the cartridge holder 9 detects the insertion of the cartridge (time t ₂ ), the loading motor 15 rotates (forward rotation). As a result, the racks 18, 18 meshed with the gear portion 16 are driven in the X direction, so that the moving frame 10 moves in the X direction, and the cartridge is pulled into the magneto-optical disk drive together with the cartridge holder 9.

When the retraction is completed (time t ₃ ), the cartridge holder 9 descends along the guide holes 11. Thus, the magneto-optical disk in the cartridge is chucked by the spindle motor 39. Thus, the cartridge holder 9 is positioned at the home position (time t ₄ ).

After the positioning is completed, the moving frame 10 continues to move. When the disk chucking sensor 40 provided on the base 26 detects that the moving frame 10 has reached the predetermined position, the rotation of the motor 15 is stopped.

Subsequently, the spindle motor 39 is started (time t ₅ ). When the spindle motor 39 reaches a predetermined rotation speed (time t ₆ ), the motor 20 is started (forward rotation). As a result, the feed screw 22 meshed with the gear portion 21 is rotated, so that the movable plate 23 moves together with the feed plate 25 in the −X direction, that is, toward the center of the magneto-optical disk. At this time, the movable integrated type head 6 is sandwiched between the lock pin 30 and the contact portion 37a, and is in a restrained state. Therefore, the movable integrated type head 6 is also movable plate 23
And move in the −X direction. Rotational speed of the spindle motor 39, a steady state (3600 rpm) at time t _7.

The movable integral type head 6 is moved to R40 (elevated position,
That is, when the feed plate 25 reaches the radial position for performing vertical movement (time t ₈ ), the feed plate 25 hits the pins 36 and is stopped, and only the movable plate 23 continues to move toward the center of the magneto-optical disk. As a result, the guide pin 29 moves up along the guide groove 31, so that the elevating lever 28 rotates counterclockwise around the pins 27, 27, and the floating magnetic head 4 is placed on the magneto-optical disk during the steady rotation. Descend. Thus, the flying magnetic head 4 flies without contacting the magneto-optical disk.

At the same time, since the lock pin 30 that has restrained the movable integrated type head 6 comes off the arm 5, the movable integrated type head 6 is sandwiched between the contact portions 37a and 37b (between R21 and R40). Then, the recording track on the magneto-optical disk in the condition (1) can be freely accessed. Loading is completed when the movable plate 23 reaches the predetermined position.
When the sensor 41 detects, the rotation of the motor 20 is stopped (time t ₉ ).

As described above, in the magneto-optical disk drive of this embodiment, the moving range of the movable integrated type head 6 is limited to between R21 and R40 by the contact portions 37a and 37b. 4 does not come off the magneto-optical disk. Thereby, breakage of the flying magnetic head 4 can be prevented.

After the positioning of the cartridge holder 9 is completed, the disc chucking sensor 40 detects that the moving frame 10 which continues to move reaches the predetermined position, and then the spindle motor 39 is started.
There is no need to start the spindle motor 39 before chucking the magneto-optical disk. This makes it less likely that the magneto-optical disk and the cartridge will be damaged. In addition, since the allowable value of the mounting position of the disk chucking sensor 40 can be increased, the magneto-optical disk drive can be assembled efficiently.

Next, the unloading of the cartridge will be described.

As shown in FIGS. 18 and 19, before the cartridge is unloaded, the rotation speed of the magneto-optical disk is in a steady state, and the floating magnetic head 4 is floating above the magneto-optical disk (time). t ₀ ').

When the unloading of the cartridge is instructed (time t ₁ ′), first, the linear motor 64 is driven so as to move the movable integrated type head 6 in the X direction. When the floating head elevating position sensor 42 (detection means) detects that the movable integrated head 6 has reached the elevating position (time t ₂ ′), the motor 20 rotates in the reverse direction to lift up the floating magnetic head 4. (Time t
₃ '). Then, the linear motor 64 is stopped (time t ₄ ′).

The lift-up of the flying magnetic head 4 is completed (time t ₅ ′), and after the completion of the lift-up is detected by the flying head-up sensor 51 provided on the base 26, the lift-up state is maintained. Then, the flying magnetic head 4 is retracted to the position of R55. When the optical head retracting / sensor 43 provided on the base 26 detects that the movable integrated type head 6 has reached the position of R55,
The rotation of the motor 20 is stopped (time t ₆ ′). Then, reduce the rotation speed of the spindle motor 39,
The spindle motor 39 is stopped (time t ₇ ′).

Subsequently, the motor 15 is rotated in the reverse direction (time t ₈ ′). Thus, contrary to the loading, the moving frame 10 moves in the −X direction, the chucking of the magneto-optical disk is released (time t ₉ ′), and the cartridge retreats. Loading out provided on the base 26
When the sensor 44 detects that the retraction of the cartridge is completed (time t ₁₀ ′), the motor 15 is stopped. And
The cartridge ejected from the magneto-optical disk drive is taken out (time t ₁₁ ′).

As described above, in the magneto-optical disk drive of this embodiment, it is confirmed that the movable integrated head 6 has returned to R40, the motor 20 is started, and the flying magnetic head 4 starts to be lifted up. Up to linear motor 6
4 presses the movable integral type head 6 against the contact portion 37a. Thus, even if the magneto-optical disk drive is set at an angle or an impact is applied to the magneto-optical disk drive during operation, the movable integrated type head 6 can be reliably restrained by the lock pin 30.

In the magneto-optical disk drive of this embodiment, apart from the sensor 52 for detecting that the movable integrated head 6 has accessed the outermost track of the magneto-optical disk, the sensor 52 is different from the floating magnetic head 4. Flying head elevating position sensor 42 for detecting that the flying magnetic head 4 is located at a position further outside the position where the magnetic head 4 is detected and inside the protrusion of the protective film on the outer diameter side of the magneto-optical disk. Are provided on the feed plate 25. A non-contact type such as a photo interrupter or a Hall element is used as the flying head elevating position / sensor 42.
As a result, the position of the movable integrated head 6 can be detected with no load, so that accurate access control can be performed and the floating magnetic head 4 can be moved up and down at R40.

In the above embodiment, a magneto-optical disk drive having a floating magnetic head 4 has been described. However, the present invention can be applied to a magneto-optical disk drive having a floating optical head. Further, the present invention can be applied to not only a magneto-optical disk drive but also an optical disk drive such as a compact disk drive and a magnetic disk drive such as a hard disk drive.

[0059]

As described above, the information recording / reproducing apparatus according to the first aspect of the present invention, when loading a cartridge,
A movable body that moves toward the center of the recording medium;
Drive source for displacement drive and recording as the movable body moves
Move toward the center of the medium and move the floating head
Move from the evacuation position to the elevating position and stop at the elevating position
Feed plate, and after the feed plate is stopped,
It is rotated by the relative movement with respect to the feed plate, as they may have a raising and lowering lever which makes lowered the flying head, during loading of the cartridge, in use the end of the unloading operation or the information recording and reproducing apparatus, the flying head cartridge No contact. As a result, the floating head and the cartridge can be prevented from being damaged.

As described above, the information recording / reproducing apparatus according to the second aspect of the present invention may further comprise, in addition to the configuration of the first aspect, when loading or unloading the cartridge or when recording the information. in use the end of the playback apparatus, the detection means for detecting that said flying head reaches the retracted position is provided, in addition to the effect of the above claims 1, that flying head reaches the retracted position Therefore, the floating head and the cartridge can be more reliably prevented from being damaged.

As described above, the information recording / reproducing apparatus according to the third aspect of the present invention allows the floating head to be positioned outside the outermost recording track when the cartridge is unloaded or when the information recording / reproducing apparatus is used. And
A second moving means for retreating to a radial position inside the outer diameter position of the recording medium and a first moving means for retreating to a retreat position away from the cartridge while holding the floating head at the above height position. Since the floating head is retracted to the above-mentioned radial position by the second moving means and then retracted to the retracted position while being held at the above-mentioned height position by the first moving means, the cartridge is loaded.
Time, unloading or use of information recording / reproducing device
When finished, the flying head no longer contacts the cartridge.
To prevent damage to the flying head and cartridge
In addition, it is possible to stably perform the operation of retracting the floating head to the retracted position away from the cartridge while holding the floating head at the above-described height position.

According to a fourth aspect of the present invention, there is provided an information recording / reproducing apparatus according to the third aspect of the present invention, wherein the floating type head does not move further outward from the radial position. Runode provided moving further limitation means for limiting the <br/>, in addition to the effect of the above claims 3, a flying head is an effect that it is possible to reliably retract the radial position of the .

[0063] Information recording and reproducing apparatus according to the invention of claim 5 is, as described above, as the second moving means according to claim 3,
Claim 3 because a linear motor is used.
In addition to the effects described above, for example, if the operation of causing the flying head to access a desired recording track is also performed by this linear motor, the information recording / reproducing apparatus can be simplified.

[0064] Information recording and reproducing apparatus according to the invention of claim 6 is, as described above, as the limiting means according to claim 4, since the stopper flying head is used, in addition to the effect of the above claims 4 This has the effect that the limiting means can be realized with a simple configuration.

[0065] Information recording and reproducing apparatus according to the invention of claim 7 is, as described above, as the second moving means according to claim 4,
A linear motor is used, and a stopper for the floating head is used as a restricting means.The floating motor is held by the linear motor until the floating head is held at the above height position at the above radius position. Since the head is pressed against the stopper, in addition to the effect of claim 4 above,
There is an effect that the operation of retracting the floating head to the retracted position away from the cartridge while holding the floating head at the above-described height position can be performed more stably.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing the entire configuration of a magneto-optical disk drive according to the present invention.

FIG. 2 is a schematic side view of the magneto-optical disk drive of FIG.

FIG. 3 is a plan view when an upper plate is removed from the magneto-optical disk drive of FIG. 1;

FIG. 4 is a side view when an upper plate is removed from the magneto-optical disk drive of FIG. 1;

FIG. 5 is a plan view showing a schematic configuration of a feed mechanism and a lifting mechanism of a movable integrated type head provided in the magneto-optical disk drive of FIG. 1;

FIG. 6 is a side view showing a schematic configuration of a feed mechanism and a lifting mechanism of a movable integrated type head provided in the magneto-optical disk drive of FIG. 1;

FIG. 7 is a cross-sectional view of the feed mechanism and the elevating mechanism of the movable integrated type head of FIG.

8 is a cross-sectional view of the feed mechanism and the elevating mechanism of the movable integrated type head of FIG.

FIG. 9 is a plan view showing a schematic configuration of a cartridge loading mechanism provided in the magneto-optical disk drive of FIG. 1;

FIG. 10 is a side view showing a schematic configuration of a cartridge loading mechanism provided in the magneto-optical disk drive of FIG. 1;

11 is a side view of the cartridge of FIG. 10 when a front fixing frame is removed from the loading mechanism.

12 is a plan view showing a schematic configuration of a drive system of a loading mechanism of a cartridge provided on an upper plate of the magneto-optical disk drive of FIG. 1;

13 is a side view showing a schematic configuration of a drive system of a cartridge loading mechanism provided on an upper plate of the magneto-optical disk drive of FIG. 1;

14 is a left side view showing a schematic configuration of a drive system of a cartridge loading mechanism provided on an upper plate of the magneto-optical disk drive of FIG. 1;

15 is a bottom view showing a schematic configuration of a drive system of a cartridge loading mechanism provided on an upper plate of the magneto-optical disk drive of FIG. 1;

FIG. 16 is an explanatory diagram showing an operation when loading a cartridge in the magneto-optical disk drive of FIG. 1;

FIG. 17 is an explanatory diagram showing an operation when loading a cartridge in the magneto-optical disk drive of FIG. 1;

FIG. 18 is an explanatory diagram showing an operation at the time of unloading of a cartridge in the magneto-optical disk drive of FIG. 1;

FIG. 19 is an explanatory diagram showing an operation at the time of unloading of the cartridge in the magneto-optical disk drive of FIG. 1;

[Explanation of symbols]

Reference Signs List 3 optical head 4 floating magnetic head (floating head) 6 movable integrated head 20 motor ( drive source, first moving means) 21 gear unit ( drive source, first moving means) 22 feed screw ( drive source, 1st moving means) 23 movable plate (movable body) 25 feed plate 28 elevating lever 37a abutting part (control means, stopper) 39 spindle motor 42 sensor (detecting means) 64 linear motor (second moving means)

Continuation of front page (56) References JP-A-4-17172 (JP, A) JP-A-3-216835 (JP, A) JP-A-2-173960 (JP, A) (58) Fields investigated (Int) .Cl. ⁶ , DB name) G11B 21/12 G11B 11/10

Claims (7)

(57) [Claims] [Claim 1] using the disc-shaped recording medium replaceable cartridge containing a, at the time of loading, the flying head, while maintaining the height position not in contact with the recording medium,
Evacuation away from the cartridge loading completion position
To the elevating position to raise and lower the floating head
After, as close during the rotation of the recording medium on the recording medium
While floating the information recording reproducing apparatus der for recording and reproducing information with respect to a spiral or concentric recording tracks
In Tsu, at the time of loading of the cartridge, in the recording medium
A movable body that moves in the center direction, a driving source that displaces and drives the movable body, and a movable source that moves toward the center of the recording medium with the movement of the movable body.
Move the floating head from the retracted position to the elevating position.
The moved, the feed plate is restrained by the vertical position, after stop of the feed plate, the phase with respect to the feed plate of the movable body
It is pivoted by a pair movement, the information recording and reproducing apparatus according to claim Rukoto which have a and <br/> Ru lift lever is lowered the flying head. Wherein when loading the cartridge, in use the end of the unloading or when the above information recording and reproducing apparatus, that the detection means for detecting that said flying head reaches the retracted position is provided Feature
The information recording / reproducing apparatus according to claim 1 . 3. A floating type head is held at a height which does not come into contact with the recording medium when rotation of the recording medium is stopped, using a replaceable cartridge containing a disk-shaped recording medium, and floats during rotation of the recording medium. An information recording / reproducing apparatus for recording / reproducing information on a spiral or concentric recording track while floating a mold head on a recording medium by approaching the recording medium, wherein the cartridge is unloaded or the information is unloaded. At the end of use of the recording / reproducing apparatus, the second moving means for retracting the floating head to a position outside the outermost recording track and inside the outer diameter position of the recording medium; A first moving means for retracting to a retracted position away from the cartridge while holding the head at the above height position is provided, and the floating head is moved by the second moving means. An information recording / reproducing apparatus characterized in that after being retracted to the above-mentioned radial position, it is retracted to the retracted position while being kept at the above-mentioned height position by the first moving means. Wherein said floating head is characterized that you have limiting means is further provided for limiting the movement of the flying head so as not to move further outward from the radial position of the
The information recording / reproducing device according to claim 3 . 5. The information recording / reproducing apparatus according to claim 3 , wherein a linear motor is used as the second moving means. 6. The information recording / reproducing apparatus according to claim 4, wherein a stopper of a floating head is used as the restricting means. 7. A linear motor is used as the second moving means, and a stopper of the floating head is used as the restricting means, and the floating head is moved to the height position at the radius position. The information recording / reproducing apparatus according to claim 4 , wherein the floating type head is pressed against the stopper by a linear motor until the head is held.