JP2003036578A - Magnetic optical disk recording-and-reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a simple composition which moves a magnetic head downward to the side of a disk only when the magnetic optical disk is mounted. SOLUTION: This is a device for recording and reproducing the magnetic optical disk and for reproducing an optical disk. In addition, an arm 44 supporting the magnetic head for impressing external magnetic field is operated by a controlling mechanism in accordance with the difference in form of a disk cartridge and brings the magnetic head into contact with the magnetic optical disk and also detaches the magnetic head from the magnetic optical disk.

Description

Description: BACKGROUND OF THE INVENTION [0001] The present invention relates to a magneto-optical disk.
Disc cartridges housed in cartridges
Magneto-optical disk for recording and reproducing information signals using
The present invention relates to a recording / reproducing apparatus. 2. Description of the Related Art Conventionally, a so-called magneto-optical disk has been
The disk cartridge etc. which are configured by being stored in the ridge
Magneto-optical disk for recording and reproducing information signals by using
A recording / reproducing device has been proposed. The magneto-optical disk is made of a transparent synthetic resin material.
Disk substrate and one of the disk substrates
Signal made of magnetic material deposited on the main surface
And a recording layer. This magneto-optical disk
The information signal is written at a predetermined position on the signal recording layer.
Irradiation of the focused luminous flux and application of an external magnetic field
It is done by doing. Irradiation of the light beam
The disk substrate is transparent from the other main surface side of the disk substrate.
It is done. Then, the application of the external magnetic field is
This is performed from one main surface of the disk substrate. The above signal description
The part of the recording layer that has been irradiated with the light beam is a so-called Curie
The coercive force is lost by being heated above the temperature.
Then, the signal recording layer in the heated portion is cooled.
During the process, it is magnetized in a direction that follows the direction of the external magnetic field.
You. That is, in the above magneto-optical disk,
While rotating this magneto-optical disk,
Light intensity or the external magnetic field intensity
Modulation in the direction of magnetization of the signal recording layer.
Therefore, the information signal can be recorded. [0005] By using such a magneto-optical disk, an information signal is transmitted.
The disk device that records the signal stores the magneto-optical disk.
A rotating operation mechanism for holding and rotating the magneto-optical device
A magnetic head for applying an external magnetic field to the disk;
Optical pickup device that focuses and irradiates the light beam on the disc
It is comprised including a device. These magnetic heads and
The optical pickup device is connected via the magneto-optical disk.
Are arranged at positions facing each other. You
That is, the magnetic head and the optical pickup device
Are connected to each other via an arm member. Also,
These magnetic heads and optical pickup devices are
Together with the arm member over the inner and outer circumferences of the magneto-optical disk.
To be movable in the radial direction of the magneto-optical disk.
Have been. The magnetic head includes a magnetic core and the magnetic core.
A magnetic field generating coil wound around the
I have. This magnetic head is provided with respect to the signal recording layer.
The so-called protective layer or slip layer formed on the signal recording layer
Substantially sliding contact through a layer made of thin synthetic resin, oil, etc.
It is arranged as close as possible. Above optical pickup
The device comprises a light source such as a laser diode and the light source
With an optical device for guiding and focusing
It is. This optical pickup device is provided with a focusing point for the light beam.
Is located on the interface between the signal recording layer and the disk substrate.
The light beam is focused on the signal recording layer so that
At a distance approximately equal to the focal length of the objective lens
Is done. [0007] As described above, magneto-optical recording media are used.
In a magneto-optical disk recording / reproducing apparatus using a disk
Is the writing of information signals to the magneto-optical disk.
Read information signals recorded on the magneto-optical disk
Some are configured to be able to perform The above magneto-optical
The reading of the information signal from the disk is directly performed on the signal recording layer.
Irradiating a condensed light beam in a linear polarization state, and the signal of the light beam
By detecting the polarization direction of the light beam reflected by the recording layer
Do. That is, the luminous flux is applied to the surface of the signal recording layer.
When reflected at the signal recording layer, depending on the magnetization direction of the signal recording layer.
The polarization direction is changed by the so-called Kerr effect.
You. Therefore, the polarization direction of the reflected light beam cannot be detected.
To read the change in the magnetization direction of the signal recording layer.
be able to. The detection of the reflected light beam is performed by the optical pickup.
This is performed by the analyzer and photodetector installed in the
It is. This analyzer is a so-called Wollaston prism or
A half-wave plate, etc., which changes the polarization direction to change the light intensity.
Convert to The photodetector is a photodiode or a photodiode.
Phototransistors and the like,
Convert to electrical signals. [0009] As described above, the light
The above magneto-optical disk in a magnetic disk recording / reproducing apparatus
When writing an information signal to the
Head and the optical pickup device are both operated.
You. However, in this magneto-optical disk recording / reproducing device,
To read information signals from the magneto-optical disk or optical disk.
When taking out, only the above optical pickup device is operated.
Thus, the magnetic head is not operated. The optical disk is made of a transparent synthetic resin material.
Disk substrate and one of the disk substrates
A reflective layer made of a metal material adhered to the main surface.
It is configured. Of the disk substrate of this optical disk
An information signal is applied to one main surface by means such as injection molding.
Is formed. This uneven pattern
The information signal records the information signal. This uneven putter
The information signal recorded by the
A laser beam is applied to the concavo-convex pattern from the other main surface side of the plate.
By irradiating and detecting the amount of reflected laser beam.
Can be read. [0011] The above-mentioned magnetic head corresponds to the above-mentioned magneto-optical disk.
The sliding contact causes wear of the magnetic head and the magneto-optical disk.
Invite. In the above magneto-optical disk recording / reproducing apparatus,
Is the frequency of sliding contact between the magnetic head and the magneto-optical disk.
If the degree is high, the resistance of these magnetic heads and magneto-optical disks
The service period is shortened. Therefore, conventionally, the above-mentioned magneto-optical disk has been mounted.
The magnetic head is mounted on the magneto-optical disk only when
So that the optical disk is loaded
The magnetic head away from the optical disk.
A magneto-optical disk recording / reproducing device has been proposed.
You. In such a magneto-optical disk recording / reproducing apparatus,
In this case, the magnetic head is the magneto-optical disk or
Or, it is supported so that it can be
You. And in this magneto-optical disk recording / reproducing device,
The arm member supporting the magnetic head is
It is possible to move in the direction approaching and separating from the pickup device.
And the magnetic head is attached to the magneto-optical disk.
Are elastically urged in a direction to approach. This
When the optical disk is loaded, the arm member is
The magnetic head is separated from the optical disk by a holding member.
And the magneto-optical disk is mounted
Is released from the holding by the holding member,
The head is moved to a position where the head approaches the magneto-optical disk.
You. [0014] The holding member is used for recording the magneto-optical disk.
Depending on which recording disc is loaded in the playback device
Move operation. This holding member is
Up device and the magnetic head have a diameter of the recording disk.
No matter where you move in the direction,
When reading a signal, it is necessary to hold the arm member
Therefore, the magnetic head extends over the inner and outer circumferences of the recording disk.
Are provided over the movable range of the node. In this magneto-optical disk recording / reproducing apparatus,
Is the frequency of sliding contact between the magnetic head and the magneto-optical disk.
The magnetic head and the recording data are
The service life of the disk can be lengthened. [0016] However, as described above, the reading of the information signal is performed.
Hold the arm member by the holding member when taking out
Keep the magnetic head away from the recording disk
In the magneto-optical disk recording / reproducing apparatus thus configured,
The magnetic head and the optical pickup device
When the disk is moved in the radial direction of the disk, the holding member and the
The sliding member comes into sliding contact with the arm member. So this light
In a magnetic disk recording / reproducing apparatus, the optical pick
Up device and diameter of the recording disk of the magnetic head
There is a possibility that the moving operation in the direction cannot be performed quickly and smoothly.
is there. Accordingly, the present invention has been made in view of the above-described circumstances.
It is proposed that the magnetic head
When the recording disk that can record information signals is
Is performed only when the magnetic head is
And that the wear of the recording disk is minimized.
In addition, without complicating the configuration,
The moving operation of the recording disk in the radial direction is fast and
Magneto-optical disk recording / reproducing device designed for smooth operation
The purpose is to provide a device. Means for Solving the Problems To solve the above-mentioned problems,
To achieve the object, a magneto-optical disk recording according to the present invention
The playback device is a disk car in which magneto-optical disks are stored.
The mounting part where the cartridge is mounted and the magnetic head on the tip side
A disk provided with the magnetic head mounted on the mounting portion
Diameter for magneto-optical disk stored in cartridge
Head support that is movably supported in the forward and backward directions
The holding member and the disc cartridge
The magneto-optical disk is disposed at a position facing the magnetic head
An optical pickup device for irradiating the disc with light,
Connecting the magnetic head support member and the optical pickup device
Connection member and the shape of the disc cartridge
By operating the magnetic head support member,
Control mechanism for moving the head toward and away from the magneto-optical disk
And the direction in which the magnetic head separates from the magneto-optical disk.
A rotation restricting member that restricts rotation of the magnetic head support member
In the direction in which the magnetic head approaches the magneto-optical disk.
A rotation prevention member for preventing rotation of the air head support member.
It is characterized by that. A magneto-optical disk recording / reproducing apparatus according to the present invention.
In, the magnetic head is controlled by the control mechanism
Depending on the difference in the shape of the cartridge,
To be separated. The magnetic head support is controlled by the control mechanism.
When the holding member is operated, the magnetic head
When moved in the direction away from the disc,
The magnetic head is separated from the magneto-optical disk by the control member
The amount of movement in any direction is restricted.
Contact of the magnetic head to the outer housing without increasing the
This can prevent damage to the magnetic head. Also, the magnetic head supporting member is controlled by the control mechanism.
When the head is operated, the magnetic head
When moved in the direction approaching the magnetic head, the magnetic head
Rotation prevention according to the difference in the shape of the disc cartridge
Movement in the proximity direction to the magneto-optical disk by the member
Is prevented, so that abrasion is prevented. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described.
The state will be described with reference to the drawings. A magneto-optical disk recording / reproducing apparatus according to the present invention.
In the above, a disk cartridge is used as a recording medium.
Recording and reproducing disc car shown in FIGS.
The read only data shown in FIGS.
Disk cartridge 211 is used selectively.
Can be The above-mentioned disk cartridge 2 for both recording and reproduction
01 is a recording / reproducing disk 205 for recording / reproducing.
The cartridge 202 is rotatably stored in the cartridge 202.
You. The recording / playback disk 205 is a so-called magneto-optical disk.
Disc, made of transparent synthetic resin, etc.
Disk substrate and one main surface of the disk substrate
A signal recording layer made of a magnetic material deposited on
It is configured. This disk substrate has, for example, a diameter
Are formed to have a size of about 64 mm. At the center of the disk substrate,
A king section is provided. This chucked part is
A circular through hole 217 formed in the disk substrate;
And a metal plate 216 for closing the through hole 217.
I have. The through hole 217 of the chucked portion is provided with the signal
A spiral formed in a substantially concentric circular shape on the recording layer
The center coincides with the center of curvature of the recording track. The other main surface of the disk substrate
An annular portion around the through hole 217 is formed as a protrusion.
And a positioning reference portion 223. Also, the above
The metal plate 216 has a main surface on one side of the disk substrate.
Fits in a concave portion 218 provided around the through hole 217.
And disposed on one main surface of the disk substrate.
It does not protrude. The recording / reproducing cartridge 202 includes:
Of a size large enough to accommodate the recording / playback disc 205.
It is configured in a thin housing shape. And this recording / playback
The main surface on the upper surface side of the
The main surface on one side of the playback / playback disk 205 extends over the inner and outer circumferences.
Opening 203 for magnetic head facing outside
Have been. Also, the recording / reproducing cartridge 20
The recording / playback disk 2 is provided on the main surface on the lower surface side of the disk 2.
05 with the other main surface facing the outside over the inner and outer circumferences
Opening 215 for the optical pickup device is opened.
You. These openings 203 and 215 face each other.
Are formed to have approximately the same size and shape
I have. That is, these openings 203 and 215 are
Each main surface of the cartridge 202 for both recording and reproduction
From the approximate center of the section
Disk cartridge loading machine for cartridge 201
Over the vicinity of the side on the side with respect to the mounting direction to the structure, approximately
Each is formed in a rectangular shape. In addition, the recording / playback
The central part of the main surface on the lower surface side of the cartridge 202
Move the chucked part and the positioning reference part 223 outward.
A chucking opening 219 is provided to face the side
Have been. The recording / playback cartridge 2
02 is used to open and close the openings 203 and 215.
Shutter member 204 is slidably mounted.
You. The shutter member 204 is made of synthetic resin, metal, or the like.
Rectangular thin plate-shaped member
The opening portions 203 and 2 are formed by both side portions.
15 can be closed. This shutter member 2
Reference numeral 04 denotes the central portion of the recording / reproducing cartridge 20.
2 by one side edge, the front and back direction along the one side edge.
Supported for riding. This shutter member 204
Slides against the recording / playback cartridge 202.
The openings 203 and 215 are
Open and close. Further, the recording of the shutter member 204
While being supported by one side edge of the reproduction / combination cartridge 202
The central part is used to close the shutter member 204.
Shutter operation hole 207 is provided. The recording / playback cartridge 20
2, a pair of front and rear positioning holes 22
0,221 is drilled. These positioning holes 22
0,221 represents the magneto-optical disk recording / reproducing apparatus.
The recording / reproduction is performed by inserting the positioning pin
The dual-purpose cartridge 202 is read / written from / to the magneto-optical disk.
The device is positioned with respect to the recording / reproducing section of the device.
ing. The recording / playback cartridge 202
At the front end side of the bottom of the
A recording / playback indicating section 209 is provided. This record
The reproduction / combination marking unit 209 is, for example, about 0.7 mm,
The recording / reproducing cartridge 2 having a very shallow depth
02 is a concave portion formed on the bottom surface portion. Further, the recording / playback cartridge 2
02, one side edge of the shutter member 20 from the front end side.
4 is provided with a shutter opening groove 206 extending over the central portion.
I have. In disk cartridge loading mechanism
Is that the shutter opening piece is forwardly inserted into the shutter opening groove 206.
The shutter member 204 is inserted from the side
Is positioned behind the recording / playback cartridge 202.
Ride and open the above-mentioned openings 203 and 215
You. Note that the shutter member 204 is used for both recording and reproduction.
In the central part supported by one side edge of the cartridge 202
The shutter support projection 208 is provided with the shutter release groove.
It is provided to project forward along 206. The recording / playback cartridge 20
2 has a front end on the other side edge opposite to the one side edge.
An erroneous insertion preventing groove 224 is provided from the side. This misinsertion
The above-mentioned disc cartridge loading
In the locking mechanism, the wrong insertion prevention piece is inserted from the front side.
It is. On the other hand, the read-only disk cartridge
211 is a read-only disk 214 for a read-only cartridge.
And is rotatably housed in the cartridge 212. the above
The read-only disk 214 is made of a transparent synthetic resin or the like.
Disc-shaped disk substrate and one side of this disk substrate
A reflective layer made of a metal material adhered to the main surface.
It is configured. This read-only disc 214
It has the same size as the recording / playback disk 205
It is configured. This read-only disc 214
The main surface on one side of the disk substrate is formed by means such as injection molding.
The formation of fine irregularities allows information signals to be recorded.
Has been recorded. The center of the disk substrate is
A locking portion is provided. This chucked part
Indicates that the recording / playback disk 205 is to be chucked.
A circular through hole formed in the disk substrate
217 and a metal plate 216 for closing the through hole 217.
It is composed of The read-only cartridge 212 is
Thin housing large enough to hold a read-only disk 214
It is configured in a shape. And this playback-only cartridge
The main surface on the lower side of the disk 212 has the read-only disc
With the other main surface of 214 facing the outer side over the inner and outer circumferences
Opening 215 for the optical pickup device to be opened
I have. The opening 215 for the optical pickup device is
Approximately the center of each main surface of the read / write cartridge 212
Position on the read-only disc cartridge 211.
Mounting direction to the disc cartridge loading mechanism
Formed in a substantially rectangular shape over the vicinity of the side edge of
Have been. The reproduction-only cartridge 212
At the center of the main surface on the lower surface side,
For positioning the positioning reference portion 223 to the outside.
A chucking opening 219 is provided. The read-only cartridge 212
Open and close the optical pickup device opening 215
Shutter member 213 for sliding
Have been. The shutter member 213 is made of synthetic resin or gold.
One end of a rectangular thin plate made of metal
The opening 21 for the optical pickup device
5 can be closed. This shutter member 21
3 is the bent cartridge at the one end side.
The front and rear along the one side edge by the one side edge of the
It is slidably supported in the direction. This shutter member
213 is a slot for the read-only cartridge 212.
Ride for the above optical pickup device
The opening 215 is opened and closed. The shutter member 213 has the recording
Shutter member 20 of raw disk cartridge 201
4, the shutter closing operation hole 207 and the shutter
A shutter support projection 208 is provided. The read-only cartridge 212
Is similar to the recording / playback cartridge 202 described above.
Rear pair of positioning holes 220 and 221, shutter opening groove 2
06 and an erroneous insertion prevention groove 224 are provided. The read only cartridge 212
At the front end side of the bottom of the
A reproduction-only sign unit 210 is provided. This playback only
The marking unit 210 is more than the recording / playback marking unit 209.
Made deep, for example, with a depth of about 2.5mm
Formed on the bottom of the read-only cartridge 212
It is a recess. The magneto-optical disk recording according to the present invention
The playback device has a chassis 1 as shown in FIG.
Equipped with a disc cartridge loading mechanism
ing. The chassis 1 is made of a metal plate material or the like.
On both sides of the chassis bottom plate 2 and the chassis bottom plate 2.
Attached substantially vertically to the chassis bottom plate 2
Having the left side plate portion 3 and the right side plate portion 4
ing. The chassis bottom plate 2 of the chassis 1 includes:
Writing an information signal to the recording / playback disk 205
Read-only or read-only disc 214
The recording / reproducing unit 41 for reading the information signal from the
Installed. The recording / reproducing unit 41 is configured as shown in FIG.
As shown, a base attached to the chassis bottom plate 2
It has a portion 57. This base portion 57 is
Through a notch 5 provided in the chassis bottom plate 2
And the substantially entire surface of the upper surface portion is located above the chassis bottom plate portion 2.
I'm facing. This base portion 57 has an upper
A spin for rotating the disks 205 and 214
A handle is installed. This spindle mode
The drive shaft 67 protrudes toward the upper surface of the base 57.
ing. Each of the above-mentioned discs is
The disk table 43 on which 205 and 214 are placed is taken out.
It is attached. This disk table 43 has a substantially circular shape.
The above-mentioned drive is formed in a support hole formed in the shape of a board and provided in the center.
The shaft 67 is fitted and supported by the drive shaft 67.
The upper surface of the disk table 43 has a substantially circular center portion.
When the frustum-shaped centering portion 66 is provided
In both cases, the periphery of the centering portion 66 is
The mounting portion 65 is provided. This centering part 66
Are the chucked portions of the disks 205 and 214
Having an outer diameter that can be fitted into the through hole 217.
You. The centering section 66 is provided with
5,214 of the positioning reference portion 223
When mounted on the mounting portion 65, the outer peripheral surface portion is formed with the through hole 2.
17 and is brought into contact with the inner edge portion of each of the disks 205 and 21.
4 is centered. The disk table 43 stores the above-mentioned data.
Metal plate 21 of chucked portion of disks 205 and 214
A magnet for attracting 6 is attached. This
The disk table 43 is moved upward by the magnet
The disks 205 and 214 are positioned and held. A pair of front and rear parts is placed on the base 57.
Are positioned. These places
The positioning pins 59 and 60 are reduced in diameter at the distal end side and are substantially spindle-shaped.
It is formed in a shape. These positioning pins 59, 60
Are the disk cars mounted on the base 57.
To the positioning holes 220 and 221 of the cartridges 201 and 211
Each of the carts is fitted correspondingly, and
The ridges 202 and 212 are positioned. On the base 57, a pair of front and rear
Positioning protrusions 61 and 62 are erected. These positions
The fixing protrusions 61 and 62 are mounted on the base 57.
On the bottom of each of the disk cartridges 201 and 211
Each cartridge 2 is brought into contact with the base 57
Positioning of the height positions 02 and 212 is performed. Also, the base 57 of the recording / reproducing section 41
Indicates that the optical pickup device 42 is an arrow in FIGS.
As shown by C, it comes into contact with and separates from the disk table 43.
It is mounted so that it can be moved in any direction. This optical pickup device 42 is an optical pickup.
The optical block has a lock section and a laser die
A light source such as an ode, a predetermined light guide
By the optical device and each of the disks 205 and 214
With a built-in photodetector that receives the reflected light flux
The objective lens driving device is attached to the optical block.
It is configured. This optical pickup device
In this case, the luminous flux emitted from the light source is
And is supported by the objective lens driving device.
Incident on the objective lens 68. This objective lens 68
Collects the incident light flux. Driving the objective lens
The apparatus is arranged such that the objective lens 68 is connected to the optical axis of the objective lens.
Direction and a direction perpendicular to the optical axis.
You. The optical pickup devices 42 are mutually
A pair of gussets which are parallel and attached to the base 57
The guide shafts are supported by the
The shafts 69, 70 cannot be moved in the axial direction.
You. That is, each of the guide shafts 69 and 70 is
Inserted into the bearing hole formed in the optical block
You. The optical pickup device 42 includes the pair
With the object lens driving device facing the upper side of the base 57
I have. Further, the optical pickup device 42 is
The optical axis of the object lens 68 is perpendicular to the base 57,
In other words, it is assumed that the chassis bottom plate 2 is vertical.
You. The optical pickup device 42 is connected to
The magnetic head 45 is mounted via the arm 73.
You. The connecting arm 73 is, as shown in FIGS.
In the optical block of the optical pickup device 42,
The base end is attached and extends substantially parallel to the base 57
A magnetic head serving as a magnetic head support member is
A pair of rising and bending to support the arm 44
It has pieces 80 and 81. These raised bending pieces
80 and 81 are above the both sides of the connecting arm 73
Are formed to be substantially parallel to each other
Is facing. The magnetic head support arm 44 is located on the proximal end side.
Is inserted between the rising bent pieces 80 and 81.
Pivotable on the support shaft 71 attached to the connection arm 71
Supported from the rear side of the base portion 57 to the front side.
Extending. This magnetic head support arm 44
Is rotated around the support shaft 71 so that the front end
Side, i.e., the free end side
Displacement in any direction. The tip of the magnetic head support arm 44
A leaf spring member 58 is provided on the side facing the base 57.
Then, a magnetic head 45 is attached. This magnetic
The head 45 is held at a position facing the objective lens 68.
Is held. That is, the magnetic head 45
The objective lens 68 is located on the optical axis of the objective lens 68.
It is possible to move in the direction of coming and going. At the base end side of the magnetic head support arm 44
Are the inner sides of the pair of rising bent pieces 80 and 81.
So that a pair of projecting pieces 87 and 88 are provided.
You. And, between these protruding pieces 87, 88, there is a rotation control.
Rotation control shaft 72 as a member is inserted and attached
Have been. The rotation restricting shaft 72 is connected to the support shaft 7.
1 is parallel. This rotation restricting shaft
72, one end side portion penetrates one protruding piece portion 88,
One rising bent piece 8 is provided on the outer side of the projecting piece 88.
It protrudes toward 1. One of the bending pieces
At the upper end of the portion 81, the one rising bent piece 81
Position of the rotation restricting member formed by bending part of
The restricting piece 89 is located on the inner side, that is, the magnetic head support.
It protrudes toward the arm 44 side. The above rotation control system
One end of the shaft 72 is provided with the magnetic head support arm.
44 is a distance between the magnetic head 45 and the base 57.
When it is rotated in the direction in which
Is done. That is, the magnetic head support arm 44 is
One end of the rotation restricting shaft 72 and the position restriction
The magnetic head 45 is moved from the position where the piece 89 abuts.
It is not rotated in the direction of separating from the base 57. An elastic member is provided at one end of the support shaft 71.
The torsion coil spring 74 is wound around and attached
ing. The torsion coil spring 74 is connected to the one
Between the raised bent piece 81 and the magnetic head support arm 44
It is interposed between them. This torsion coil spring 74
Connects the magnetic head support arm 44 to the other
It is pressed against the raised bending piece 80. That is,
The other raised bending piece 80 is supported by the magnetic head support.
It serves as a reference for the position of the holding arm 44 in the axial direction of the support shaft 71.
Positioning member. In addition, the above-mentioned torsion coil
The spring 74 locks one arm portion to the base portion 57.
And the other arm is connected to one end of the rotation restricting shaft 72.
The magnetic head support by locking to the side part
The arm 44 is connected to the magnetic head 45 by the objective lens 6.
8 is urged to rotate in a direction away from the reference numeral 8. Accordingly
In addition, the magnetic head support arm 44
In the initial state where the cartridges 201 and 211 are not mounted
In this case, one end of the rotation restricting shaft 72 is
4 and 5, as shown in FIGS.
The magnetic head 45 is separated from the objective lens 68
The initial position has been set. The rotation restricting shaft 72 has
Magnetic head according to the difference in the shape of the disk cartridge
By operating the support member, the magnetic head is
Disk type detection, which is a control mechanism
The middle part of the output arm 78 is attached. This disk
The lock type detection arm 78 is provided with the insertion hole 8 provided in the middle part.
2 by inserting the rotation restricting shaft 72 therethrough.
Thus, rotation around the axis with respect to the rotation restricting shaft 72
And are mounted so that they can slide in the axial direction. Also,
At the rear end of the disc type detection arm,
Is provided with an engagement notch 83 for engaging
You. The engagement notch 83 allows the support shaft 71 to be inserted therethrough.
And is engaged with this support shaft 71. That is,
The disc type detection arm 78 is provided with an axis
It is possible to rotate around and slide in the axial direction.
Therefore, the disk type detection arm 78 is
The support shaft 71 and the rotation restricting shaft 72
By the above, the magnetic head support arm 44 with respect to the above
The rotation of the support shaft 71 around the axis is restricted. The disc type detection arm 78
A contact protrusion 79 is provided at the front end of the
At the same time, a locked projection 84 is protruded toward the front side.
ing. Further, on the base portion 57, a movement restricting portion is provided.
A pair of movement restricting pieces 85 and 86 serving as materials are protrudingly provided.
You. These movement restricting pieces 85 and 86 correspond to the disc type described above.
Hold the front end of the detection arm 78 from both sides.
It is formed. These movement restricting pieces 85, 86
Is the disk type detection arc for the base 57.
The movement of the shaft 78 in the axial direction of the support shaft 71 is prevented. 2 and 3 and FIG.
As shown in FIG. 8, it becomes a stopper member (rotation preventing member).
A stopper arm 75 is provided. This stopper
The arm 75 is located halfway with respect to the rear portion of the base 57.
The part is rotatably supported via a support shaft 77. this
The stopper arm 75 has a cartridge on the upper surface on one end side.
It has a contact pin 76. This stopper arm 75
Is a coil spring (not shown) as shown by an arrow S in FIG.
The urging member such as
It is urged to rotate forward to move it to the initial position.
Positioned. At this time, the stopper arm 7
5 is the other end of the disc type detection arm 78.
The lower side of the locked projection 84, that is, the locked projection 8
4 and the base 57. In this state
In this case, the disk type detection arm 78 is
The engagement between the locking projection 84 and the stopper arm 75
As a result, rotation toward the base 57 is prevented.
ing. That is, at this time, the magnetic head support arm
The system 44 is provided via the disk type detection arm 78,
Move the magnetic head 44 to the base 57 from the initial position.
Rotation in the approach direction is prevented. Then, the cartridge contact pin 76
As shown in FIG. 3, the disc is placed on the base 57.
When the cartridges 201 and 211 are attached,
Abutting against the front ends of the disc cartridges 201 and 211.
And is moved rearward, as shown by the arrow T in FIG.
The stopper arm 75 is rotated. At this time,
The other end of the upper arm is below the locked projection 84.
The disk type detection
The restriction on the rotation of the drum 78 is released. The magnetic head support arm 44 is
The recording / playback disk cartridge 2 is mounted on the base 57.
01, the disc type detection arm 78
Of the abutment projection 79 on the bottom of the recording / playback indicator 209
And is rotated around the support shaft 71, as shown in FIG.
As shown in FIG.
This is the first position for sliding contact with the disk 205. Ma
In addition, the magnetic head support arm 44 is mounted on the base 57.
The read-only disc cartridge 211 is mounted on the
Then, the contact protrusion 79 is moved to the reproduction-only indicator 210.
Is pressed by the bottom of the shaft and is rotated around the support shaft 71,
As shown in FIG. 6, the magnetic head 45 is moved to the initial position.
Is moved to the read-only disk 214 side.
However, the magnetic head 45 is attached to the read-only cartridge 21.
The second position is separated from the second position. The magneto-optical disk recording / reproducing apparatus has
In this case, the control mechanism controls the shape of the disk cartridge.
The difference is detected electrically via an electric switch, etc.
In accordance with the detection result, the rotation of the magnetic head support arm 44 is
It may be controlled. Then, on the chassis bottom plate 2,
As shown in FIG.
211 is inserted from the front side and the disc cartridge is
The cartridge holder 26 holding the dies 201 and 211
It is arranged. This cartridge holder 26 is
It is supported by the cartridge pressing plate 27. This cart
The cartridge holding plate 27 is attached to the disk cartridge 20.
Flat plate of approximately the same size and shape as the main surface portions 1, 211
Shaped main surface and side walls suspended from both sides of the main surface
And is formed of a metal plate or the like. This mosquito
The cartridge holding plate 27 is placed on the chassis bottom plate 2.
The rear portion of each side wall portion is provided with the chassis bottom plate portion 2.
And is rotatably supported with respect to the chassis bottom plate 2.
Can be moved away from. Press this cartridge
Each of the cartridges 202 and 212 is attached to the even plate 27.
The plurality of leaf spring portions 27a for pressing and supporting downward are cut off.
Is formed. The cartridge holder 26 holds the respective cartridges.
The cartridges 202 and 212 can be inserted from the front side.
As described above, these cartridges 202 and 212 are substantially
The front side and the top and bottom parts are
Some of them are open. This cartridge
The holder 26 is located on the lower surface side of the cartridge holding plate 27.
Approximately along the cartridge holding plate 27
The cartridge holding down
The plate 27 is rotatably supported at an intermediate portion. Sandals
The cartridge holder 26 is provided with the cartridge
It is made to be able to contact and separate from the holding plate 27
In addition, the cartridge holding plate 27 is connected to the chassis bottom plate.
When the cartridge holding plate 2 is turned to the
7 and the chassis bottom plate 2. The cartridge holder 26
The cartridges 201 and 211 are oriented in a predetermined direction.
When the cartridge holder 26 is inserted from the front side,
The shutter opening piece provided inside is the shutter opening groove 2.
Enter into 06. And the above disk cartridge
201 and 211 are inside the cartridge holder 26.
And the shutter release piece is moved to the shutter support protrusion.
When the cartridge comes into contact with the front end of the one piece 208,
The shutter closing piece provided on the cartridge holder 26 is
The shutter fits into the shutter closing operation hole 207. And further
The disk cartridges 201 and 211
When the insertion operation is performed inside the cartridge holder 26,
The shutter members 204 and 213 are provided with the shutter support projections.
The front end of the piece 208 was brought into contact with the shutter release piece.
The cartridge 20 is stopped at the position
2, 212, and each of the openings 20
3, 215 is opened. Then, on the chassis bottom plate 2,
A disk tray 30 is provided. This disk tray
A 30 is provided when the disk cartridges 201 and 211 are
The receiving plate 39 to be placed and the receiving plate 39 can be moved up and down.
And a supporting frame portion. The receiving plate 3
9 is a main surface of the disk cartridge 201, 211
Metal plate, etc., having a shape and size approximately equal to the part
Is formed. The receiving plate 39 has a plurality of openings.
The mouth is opened. These openings are provided in the receiving plate 3
9, the disk cartridges 201 and 211 are placed
When the disk cartridges 201 and 21
No. 1 opening 215 for optical pickup device, chuckin
Opening 219, positioning hole 220, each indicator 20
9, 210, etc. to face the lower side of the receiving plate 39
belongs to. The frame is made of a material such as synthetic resin.
A linear portion located on the front end side of the recording plate 39;
39 with straight portions located on both sides.
It is formed to have a character shape. That is, this frame
Is open on the rear side. This frame part is
The length is the main length of the disk cartridges 201 and 211.
The length is approximately twice as long as the length of the surface in the front-rear direction. this
The rear end portions of both side portions of the frame portion are connected via a connecting plate 31.
And are connected to each other. This connecting plate 31 is thin
It is formed of a material such as a metal plate, and is
It is attached. The frame portion is arranged so that the receiving plate 39 is
It is movably supported. Of the upper surface of the receiving plate 39
A pair of support pins 145 and 146 are planted on both sides
Have been. These support pins 145 and 146 are
A pair of support holes provided on both sides of the
It is fitted correspondingly. This receiving plate 39
Align the support pins 145 and 146 with the support holes and
It can be moved downward. This receiving plate 39
Set the front edge near the straight part on the front side of the frame
I have. The receiving plate 39 is provided with a spring disposed in the frame.
By this, it is elastically biased upward. Note that the frame portion is provided on the receiving plate 39.
The mounting of the disk cartridges 201 and 211 to be mounted
To facilitate removal and removal,
At positions corresponding to both sides of the cartridge 201, 211.
Part of both sides of the cartridges 201 and 211
And a pair of notches 32, 33 facing the side.
I have. The disk tray 30 is mounted on the chassis
Arranged on the bottom plate 2 and placed on the receiving plate 39
The disk cartridges 201 and 211 are stored in the recording / reproducing unit 41.
And the position of the disk cartridge 20
1, 211 can be moved between the attachment / detachment operation positions.
ing. That is, one side portion of the frame 30 is
An id member 34 is attached. This guide member 34
Has a shaft insertion hole 35 made of a material such as a synthetic resin.
Formed and attached to the above-mentioned frame,
It protrudes in one side direction. The guide member 34
The shaft insertion hole 35 is attached to the left side plate portion 3.
Guide shaft 29 is inserted. This guide
In the shaft 29, the front end portion of the left side plate portion 3 is outward.
The front end side is supported by the shaft support part formed by bending
And a shuff provided on a rear end portion of the left side plate portion 3.
The rear end side is supported by the
And is attached to the left side plate portion 3. Also, the above frame
A guide ridge 139 projects in the front-rear direction on the other side of the part.
Is established. The guide ridge 139 is provided on the right side plate.
The upper part of the part 2 is slidably supported. This
The disc tray 30 is provided with the above-described guide shaft 29 and
Sliding forward and backward along the guide ridge 139
Noh has been done. This disc tray 30 is indicated by an arrow B in FIG.
When the receiving plate 39 is moved to the rear side
Loading position to be the upper position of the recording / reproducing unit 41
Is moved forward in the direction of arrow A in FIG.
And the receiving plate 39 protrudes forward of the chassis 1.
The position of the disc car on the receiving plate 39
An unlock that allows the user to attach and detach the cartridges 201 and 211.
Loading position. The disc tray 30 is
By the loading motor mounted on the left side plate 3
The moving operation is performed by the cam gear 28 which is rotated. This
The cam gear 28 has the outer peripheral gear portion formed on the outer peripheral side.
Gear having a first cam groove formed on one main surface.
You. The outer peripheral gear part covers an angle range of approximately 90 °.
Of approximately half the full width of the outer peripheral gear
You. On the other hand, on the bottom of the frame,
The outer peripheral gear portion of the gear 28 is substantially half of the entire width of the outer peripheral gear portion.
Part, that is, the part where the missing tooth part is formed
A rack gear that meshes with the portion that is engaged. sand
That is, when the cam gear 28 rotates, the frame portion
Of the cam gear 28 of approximately 270 °,
That is, a range in which the outer peripheral gear portion meshes with the rack gear.
Movement operation is performed within the enclosure. And this frame part
Within a rotation range of approximately 90 ° of the cam gear 28,
That is, within the range where the toothless portion faces the rack gear
Is not moved. The cam gear 28 is connected to the disc.
Not only the tray 30 but also the cartridge holding plate 2
7 is also moved. The cam gear 28
The operation of moving the cartridge pressing plate 27 is such that
Within the angle range of approximately 90 ° facing the rack gear of the frame
Rotation. That is, the cartridge holding plate 27
Can be connected to the first cam groove via a driven arm (not shown).
Is engaged. In other words, the cartridge holder
When the cam gear 28 is rotated, the plate 27
It is rotated with respect to the bottom plate 2. The chassis 1 is provided with the magneto-optical disk.
Support fixedly arranged inside the outer casing of the disc recording / reproducing device
The substrate 18 is supported in a so-called floating manner.
Installed. That is, the chassis 1 is
Four tension coil springs 6,
7, 8, 9 and 4 dampers 22, 23, 24, 25
Supported through. These dampers 22, 23, 2
4 and 25 are bag-like materials made of a flexible material such as rubber.
A liquid material with high viscosity is enclosed in a member of
ing. The magneto-optical device according to the present invention configured as described above
In a disc recording / reproducing apparatus,
Disk cartridge 201 or the read-only disk
To mount the disk cartridge 211, first,
The disc tray 30 is set at the unloading position.
At this time, the cartridge pressing plate 27 is
And held at a position separated from the bottom plate 2
The cartridge holder 26 is separated from the chassis bottom plate 2 and
ing. In this state, the data is placed on the receiving plate 39.
The disk cartridges 201 and 211 are placed. Then, by the above loading motor,
When the cam gear 28 starts rotating, the disc
The ray 30 moves backward as indicated by the arrow B in FIG.
Is done. Then, the disc tray moves further back
When the disk cartridges 201 and 21 are moved,
1 is an operation of inserting the cartridge holder 26 into the cartridge holder 26 from the front side.
Is done. Then, the disk cartridges 201,
11, the shutter members 204 and 213 are
The cartridge 202,
The optical pickup device is moved with respect to
Mounting opening 215 or magnetic head opening 203
Then, the opening 215 for the optical pickup device is opened.
It is. At this time, the shutter closing piece is attached to the shutter.
The shutter fits into the shutter closing operation hole 207. Until this time,
The magnetic head support arm 44 is shown in FIGS.
As described above, the magnetic head device 45 is held at the raised position.
The initial position has been set. When the disc tray 30 is
When the disc tray reaches the racking position,
The cam gear 28 rotates further, with the toothless portions facing each other.
However, the disc tray 30 is kept stopped.
Is done. At this time, the disk cartridge 201,
211 is above the recording / reproducing unit 41 as shown in FIG.
Transported to one side position. At this time, the arrow U in FIG.
Bottom surfaces of the disk cartridges 201 and 211 indicated by
The distance between the unit and the disk table 43 is, for example,
For example, a sufficient distance of about 4 mm is provided. Then, the cam gear 28 further rotates.
Then, the cartridge is pushed by the first cam groove.
The plate 27 is pivoted toward the side close to the chassis bottom plate 2.
It is. Then, the disk cartridges 201, 21
1 is, as shown in FIG. 6 and FIG.
Is mounted on the base 57, and the loading operation is performed.
The work is completed. These disk cartridges 201,
211 is a leaf spring portion of the cartridge holding plate 27.
27a, it is elastically pressed and supported on the base portion 57 side.
Have been. Note that the receiving plate 39 is
Pressed by the cartridges 201 and 211,
Is moved downward. The cartridges 202 and 21
2 is the positioning pins 59 and 60 and the positioning pins
A predetermined position on the base portion 57 by the projections 61 and 62
Is positioned. Then, the magnetic head support arm 44
Is mounted on the disk cartridge 201 for both recording and reproduction.
In the case of wearing, as shown in FIG.
And the read-only disc cartridge 2
When 11 is mounted, as shown in FIG.
This is the first position. In addition, each of the above disks 20
5, 214 are positioned on the disk table 43
It is placed and mounted. At this time, the spindle mode
The data is stored in the disk table 43 together with the respective disks.
It is possible to rotate the disks 205 and 214.
ing. In this state, the optical pickup
The device 42 includes the recording / playback disk 205,
On the other side of the read-only disc 214
Thus, the objective lens 68 is opposed. Also this
The optical pickup device 42 includes the above-described disks 205,
With the objective lens 68 facing the object 214,
It can be moved over the inner and outer circumferences of the disks 205 and 214.
Have been. This optical pickup device 42 is
From the main surface side of the disk 205, 214
To irradiate the light beam. Above light
Of the disks 205 and 21
4 is moved radially across the inner and outer circumferences of the disk 4.
The arm type detection arm 78 is connected to each of the movement restriction pieces 85 and 86.
The axial movement of the support shaft 71 is prevented by the
To stay in a certain position. At this time, the support shaft 71 and
The rotation restricting shaft 72 is connected to the magnetic head support arm.
The disk type detection arm
The shaft 78 slides in the axial direction. Here, the spindle motor and the optical
The pickup device 42 and the magnetic head device 45 operate.
By being moved, the recording / playback disk 205
Can be written with the information signal. sand
That is, when the recording / playback disk 205 is rotated.
And is recorded on the signal recording layer of the recording / playback disk 205.
The light is condensed by the optical pickup device 42 and illuminated.
The irradiated area is heated and the heated area is
When the magnetic head device 45 applies an external magnetic field,
Then, an information signal is written. Also, in this state
To read information signals from the read-only disc 214.
It is possible to put out. That is, the playback-only data
The disk 214 is rotated, and the optical pickup is placed on the reflective layer.
The light beam is condensed and irradiated by the backup device 42,
By detecting the reflected light beam of the light beam, the information signal
Reading is performed. Then, as described above, the recording / reproducing unit is mounted on the recording / reproducing unit.
The loaded disk cartridges 201 and 211 are
To take it out of the magneto-optical disk recording / reproducing device,
Rotation of the gear 28 in the opposite direction of the loading operation described above.
To move the disc tray forward.
Rotate. Then, the cartridge holding plate 27
Is rotated in a direction away from the chassis bottom plate 2.
The cartridge holder 26 is attached to the chassis bottom plate.
2 to the upper side. At this time,
The cartridges 201 and 211 are a base for the recording / reproducing unit 41.
And is placed on the receiving plate 39.
You. The magnetic head support arm 44 is connected to the screw
By the biasing force of the coil spring 74, as shown in FIG.
Return to the initial position. Then, the cam gear 28 is further rotated.
As a result, the disc tray 30 is moved forward.
It is moved. At this time, the above disk cartridge
201 and 211 are placed on the receiving plate 39.
Also, it is transported forward. At this time,
In the cartridges 201 and 211, the shutter lid is closed.
The closing operation of the shutter members 204 and 213 is performed by the piece.
The work is done. Further, the cam gear 28 is rotated,
When the disc tray 30 is in the unloading position
At this point, the disk cartridges 201 and 211
It can be removed from the disc tray 30.
ing. It should be noted that the magneto-optical disk according to the present invention
In the raw device, the disc type detection arm 78
The rotation for restricting the rotation with respect to the magnetic head support arm 44
The movement restricting member is a rotation restrictor as shown in the above embodiment.
It is not limited to the control shaft 72. That is, this turning rule
As a control member, as shown in FIG.
The disc type detection arm 78 from the support arm 44
A pair of rotation restricting pieces 91 projecting so as to be sandwiched,
It may be 92. Also in this case, the arrow in FIG.
As indicated by X and arrow Y, the disk type detection
When the arm 78 is rotated around the support shaft 71,
Disk type detection arm 78 and the magnetic head support arm
Relative rotation with the arm 44 is prevented.
The magnetic head support arm 44 detects the disc type.
The rotation operation is performed following the arm 78. As described above, the magneto-optical disk according to the present invention is used.
In a disk recording / reproducing apparatus, a magnetic head is provided with a control mechanism.
Light according to the disc cartridge shape difference
It is moved toward and away from the magnetic disk. And to the control mechanism
When the magnetic head supporting member is operated more,
The magnetic head is moved away from the magneto-optical disk.
The magnetic head by the rotation restricting member
Since the amount of movement in the direction away from the disk is regulated,
Without increasing the size of the entire device,
To prevent damage to the magnetic head due to contact of the magnetic head
Can be. Further, the magnetic head supporting member is controlled by the control mechanism.
When the head is operated, the magnetic head
When moved in the direction approaching the magnetic head, the magnetic head
Rotation prevention according to the difference in the shape of the disc cartridge
Movement in the proximity direction to the magneto-optical disk by the member
Is prevented, so that abrasion is prevented. That is, the present invention relates to the recording data of a magnetic head.
The sliding contact with the disc is a recording disc that can record information signals.
This is done only when the
Minimize wear of the magnetic head and the recording disk
And without complicating the configuration,
Movement of the head in the radial direction of the recording disk
Magneto-optical disk that can be operated quickly and smoothly
It is possible to provide a recording and reproducing device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a configuration of a magneto-optical disk recording / reproducing apparatus according to the present invention. FIG. 2 is a plan view showing a configuration of a recording / reproducing unit of the magneto-optical disk recording / reproducing apparatus. FIG. 3 is a plan view showing a state where a disk cartridge is mounted on the recording / reproducing unit. FIG. 4 is a side view showing a configuration of the recording / reproducing unit and a disk cartridge mounted on the recording / reproducing unit. FIG. 5 is a side view showing a state where the disk cartridge is being mounted on the recording / reproducing unit. FIG. 6 is a side view showing a state in which a read-only disk cartridge is mounted on the recording / reproducing unit. FIG. 7 is a side view showing a state where a recording / reproducing disk cartridge is mounted on the recording / reproducing unit. FIG. 8 is an enlarged perspective view showing a configuration of a main part of a magnetic head support arm of the recording / reproducing unit, partially cut away. FIG. 9 is an enlarged plan view showing a configuration of a main part of the magnetic head support arm with a part thereof cut away. FIG. 10 is an enlarged side view showing another example of the configuration of the main part of the magnetic head support arm. FIG. 11 is a perspective view showing a configuration of a disk cartridge for both recording and reproduction. FIG. 12 is a perspective view of the recording / reproducing disk cartridge viewed from the bottom surface side. FIG. 13 is a perspective view showing a configuration of a read-only disk cartridge. FIG. 14 is a perspective view of the read-only disk cartridge viewed from the bottom surface side. [Description of Signs] 41 Recording / reproducing unit, 44 Magnetic head support arm, 57
Base part, 71 support shaft, 72 rotation restricting shaft, 74
Torsion coil spring, 75 Stopper arm, 78 Disc type detection arm, 79 Contact protrusion, 80, 81
Standing bent piece, 85, 86 Movement regulating piece, 201
Recording / playback disk cartridge, 205 Recording / playback disk, 209 Recording / playback indication unit, 210
Play-only indicator, 211 Play-only disc cartridge, 214 Play-only disc

Claims (1)

Claims: 1. A mounting section on which a disk cartridge containing a magneto-optical disk is mounted, and a magnetic head provided on a tip end side, and the disk having the magnetic head mounted on the mounting section. A magnetic head support member for movably supporting the magneto-optical disk accommodated in the cartridge in a radial direction and a direction of contact and separation, and a magnetic head support member disposed at a position facing the magnetic head with the disk cartridge mounted on the mounting portion interposed therebetween. An optical pickup device for irradiating the magneto-optical disk with light; a connecting member for connecting the magnetic head support member and the optical pickup device; and a magnetic head according to a difference in shape of the disk cartridge. A controller for moving the magnetic head toward and away from the magneto-optical disk by operating a support member A rotation restricting member that restricts rotation of the magnetic head support member in a direction in which the magnetic head is separated from the magneto-optical disk; and a magnetic head in a direction in which the magnetic head approaches the magneto-optical disk. A magneto-optical disk recording / reproducing apparatus, comprising: a rotation preventing member for preventing rotation of the support member.