JPH069099B2 - Magneto-optical recording / reproducing device - Google Patents

Description

The present invention relates to a magneto-optical recording medium which is an information recording medium, and
The present invention relates to a magneto-optical recording / reproducing device that records, reproduces, and erases information by cooperating a light beam and a magnetic field.

The magneto-optical recording / reproducing apparatus may have various shapes such as a disk shape and a card shape. In the following, a disk-shaped magneto-optical recording medium (hereinafter referred to as a magneto-optical disk) will be described as an example.

(Prior Art) Conventionally, an information recording apparatus that records and / or reproduces information by utilizing light, magnetism, or magneto-optic has been put into practical use.

This type of information recording apparatus includes an insertion opening for inserting a cartridge containing a magneto-optical disk into the apparatus, a holder for receiving the cartridge inserted through the insertion opening, and a vertical direction of the holder. A loading mechanism for moving a predetermined distance, a base on which magnetic field generating means for applying a magnetic field to the disk is mounted, and the predetermined distance in the vertical direction for moving the magnetic field generating means close to the disk. A base moving means for moving a larger distance is provided.

The functions required of this loading mechanism are good operability, protection of the inside of the apparatus from the external environment such as dust to some extent, erroneous insertion of the cartridge, and simple structure.

Conventionally, a front loading mechanism having a cartridge insertion opening on the front surface of the apparatus has been mainly used because of easy compactness.

The loading mechanism of this type will be described below with reference to FIG.
A description will be given with reference to FIGS. 3 (a) and 3 (b) are cross-sectional views of an information recording / reproducing apparatus having a front loading mechanism, FIG. 3 (a) shows a cartridge insertion state, and FIG. 3 (b) shows a cartridge. This shows the end state of the loading operation.

In these figures, the side plate 2 of the information recording / reproducing apparatus has L
A V-shaped guide groove 4 is provided. The cartridge 6 that houses the disk 5 is held by the cartridge holder 8. The cartridge holder 8 is provided with a guide pin 10, and the guide pin 10 is guided along the guide groove 4 so that the cartridge 6
Is moved from the cartridge insertion state shown in FIG. 3 (a) to the loading operation end state shown in FIG. 3 (b).

Further, the front panel 1 having the cartridge insertion port 7
A shutter 16 that opens and closes at the cartridge insertion port 7 is provided at 2, and the shutter 16 performs opening and closing operations around a fulcrum 14 that is provided at the inner upper end of the cartridge insertion port 7. This opening / closing operation is performed by the weight of the shutter 16, and the cartridge insertion opening 7 causes the cartridge 6 to be opened.
When the cartridge 6 is inserted, the shutter 16 is pushed by the insertion operation of the cartridge 6 and opened. After that, when the cartridge 6 is loaded by the driving means (not shown) and completely loaded in the apparatus, the shutter 16 is closed by its own weight.

(Problems to be Solved by the Invention) In the information recording / reproducing apparatus having the above-described configuration, when the cartridge 6 is not loaded inside the apparatus, the shutter 16 is closed by its own weight. As described above, the shutter 16 is closed even when the cartridge 6 is loaded in the apparatus. Therefore, in such a case, it is difficult to determine whether or not the cartridge 6 is loaded in the apparatus from the outside, and the cartridge may be erroneously inserted. For this reason, it is desirable to provide a means for appropriately determining whether or not the cartridge is loaded inside the apparatus so as to prevent this erroneous insertion.

Further, in order to enable the shutter 16 to close at the end of the loading operation, a gap is required between the end of the cartridge 6 and the shutter 16 so that the shutter 16 can rotate. There was a problem that it had to be long in the loading direction.

Further, in the device having the loading mechanism as described above, it is required to rotate the shutter 16 upward again about the fulcrum 14 at the time of ejecting the loaded cartridge, and a complicated mechanism is required for this means. Will be needed.

The present invention has been made in view of such circumstances, and it is possible to easily determine whether or not a cartridge is loaded in the device so as to prevent the cartridge from being erroneously inserted, and it is possible to sufficiently realize the downsizing of the device. An object is to provide an information recording / reproducing device.

As an apparatus capable of solving the above-mentioned drawbacks by the applicant, an apparatus main body having a cartridge insertion opening, a first shutter that closes the cartridge insertion opening when a cartridge is not inserted, and a slide along the main body when the cartridge loading is completed. An information recording / reproducing apparatus having a second shutter that moves to close the cartridge insertion port (Japanese Patent Application No. 61-29159).
(Gazette No. 2) has already been submitted.

The present invention achieves the above object by constructing the driving means for the second shutter of the above-mentioned device by a simpler and novel mechanism.

(Means for Solving Problems) This object is achieved by the configuration of the present invention described below. That is, here, an insertion opening for inserting the cartridge containing the magneto-optical disk into the apparatus, a holder for receiving the cartridge inserted through the insertion opening, a predetermined distance in the vertical direction of the holder,
A loading mechanism for moving, a base on which magnetic field generating means for applying a magnetic field to the disk is mounted, and a distance larger than the predetermined distance in the vertical direction for moving the magnetic field generating means closer to the disk. In a magneto-optical recording / reproducing apparatus including a base moving means for moving,
When the cartridge is not inserted, the cartridge insertion opening is closed, and when the cartridge is inserted, the cartridge is pushed and pivotally opened, and after the insertion, the cartridge is brought into contact with the outer peripheral surface of the cartridge to be maintained in the open state. In conjunction with the first shutter provided and the base,
A second shutter provided on the base to close the cartridge insertion port after the cartridge is inserted.

(Operation) In the magneto-optical recording / reproducing apparatus of the present invention configured as described above, the second shutter is provided in addition to the first shutter, and the second shutter is originally provided in the magneto-optical recording / reproducing apparatus. Since the cartridge insertion opening can be opened and closed by the structure that moves up and down in conjunction with the up and down movement of the magnetism generating means, the second shutter can be formed by a simple means. Further, since the opening and closing of the second shutter is interlocked with the vertical movement of the magnetic field generating means associated with the cartridge inserting operation, it is possible to confirm whether or not the cartridge is loaded depending on the opening and closing state of the second shutter. it can.

(Example) Hereinafter, the Example of this invention is described, referring drawings.

A magneto-optical disk apparatus is used as a specific example of the information recording / reproducing apparatus of the present invention, and its sectional views are shown in FIGS. 1 (a) and 1 (b). FIG. 1A is a diagram when the disc cartridge is inserted, and FIG. 1B is a diagram when the magneto-optical disc is clamped by the spindle motor.

In these figures, 102 is the magneto-optical disk 1 inside.
A disk cartridge storing 01 is shown. The loading mechanism 107 that receives the disc cartridge in the holder and conveys the disc cartridge includes a guide pin 124 that operates integrally with the holder. Then, in the loading mechanism 107, the guide pin is guided along the L-shaped guide groove 122 provided in the side plate 121 of the apparatus, so that the disc cartridge 10 is driven.
2 is moved from the disc cartridge insertion position shown in FIG. 1 (a) to the loading operation end position shown in FIG. 1 (b).

Reference numeral 106 denotes a magneto-optical head, which is driven in the radial direction of the disk 101 by a drive mechanism (not shown) provided on the head frame 108. A turntable 109 holds the magneto-optical disc 101 housed in the disc cartridge 102 from below when the disc cartridge 102 is moved to the loading operation end position shown in FIG. 1B. Clamp foot 104 described later
To clamp the magneto-optical disk 101. The magneto-optical disk 101 thus clamped is
It can be rotated by a spindle motor (not shown) provided on the head frame 108.

Reference numeral 103 denotes a bias magnet as a magnetic field generating means, and the bias magnet and the clamp holder 104 are the base 1
Held by a base moving means for moving the bias magnet closer to the disk by a distance larger than the predetermined distance in a vertical direction.
Move it. In this embodiment, the base moving means uses the guide pins provided on the base 105 as the side plate 1.
The intended purpose is achieved by adopting a configuration of moving in the vertical direction along the linear guide groove 123 provided in 21. After the loading operation shown in FIG. 1 (b) is completed, the bias magnet 103 approaches the recording surface of the magneto-optical disc 101 as the clamp retainer 104 descends, and generates a magnetic field on the optical disc.

The magneto-optical head 106 is provided with an objective lens driving device that moves the objective lens in the auto focus direction and the auto tracking direction.

The display panel 112 fixed to the front surface of the apparatus main body has a cartridge insertion opening 11 for inserting the cartridge 102.
4 are provided.

Reference numeral 110 denotes a first shutter that opens and closes the insertion port 114, and is attached to the end of the loading mechanism 107 so as to be rotatable about a rotation shaft, and as shown in FIG. The state where 102 is inserted and kept pressed by the cartridge is maintained, and at the end of the loading operation, as shown in FIG.

The second shutter 111 is provided inside the display panel 112 so as to be vertically slidable. This second shutter 111 has an opening 111b and is shown in FIG.
When the disc cartridge shown in FIG. 2 is inserted, the opening 111b is at the same position as the cartridge insertion port 114,
It does not hinder the insertion operation of the disc cartridge 102. The second shutter 111 has a protrusion 111.
a is attached toward the inside of the apparatus. The lower portion of the protrusion 111a is held by the loading mechanism 107, and the upper portion thereof is pressed by the leaf spring 113 fixed to the loading mechanism 107, and is sandwiched by the loading mechanism 107 and the leaf spring 113 from above and below. ing. Therefore, as shown in FIG. 1B, when the loading mechanism 107 moves downward during the loading operation of the cartridge 102, the second shutter 111 also descends as the loading mechanism descends, and the cartridge is inserted. Shield the mouth 114.

The configuration of the second shutter 111 is shown in FIG.
As shown in FIG.
The same effect can be obtained even if it is attached in the upside down position.

The operation of the optical head device of the present embodiment configured as described above will be described below.

The position of the magneto-optical head 106 in FIGS. 1A and 1B is the home position, and is always held at this position when loading and unloading the disc.

When the loading of the disc is started at the position shown in FIG. 1A, the loading mechanism 107 moves in the arrow direction along the guide groove 122 while holding the disc cartridge 102. At this time, the first shutter 110 is kept pressed by the disc cartridge 102 and is separated from the insertion port 114 as the disc is loaded. Then, when the loading mechanism 107 descends, the second shutter 111 also descends, blocking the cartridge insertion port 114, as shown in FIG. 1 (b).

After loading the disc cartridge 102, the second
When the user's finger is caught by the shutter 111 of the second shutter 111, the second shutter 111 is lowered by the elastic force of the leaf spring 113 even if the loading mechanism moves, as shown in FIG. 2B. Without doing this, finger damage can be prevented. Then, when the finger is removed, the second shutter 111
Is immediately lowered by the elastic force of the leaf spring 113 and shields the cartridge insertion port 114.

Therefore, after the disk cartridge is loaded, the presence or absence of the disk cartridge can be checked by checking the presence of the second shutter at the insertion opening.

(Effects of the Invention) As described above, according to the magneto-optical recording / reproducing apparatus of the present invention, the opening / closing means of the second shutter is simply linked to the vertical movement of the magnetic field generating means originally provided in the apparatus. It can be configured by means. Also, compared to the vertical movement of the holder, the vertical movement of the base mounting the magnetic field generation means is
Since the magnetic field generating means is large enough to enter the inside of the cartridge, by equipping it with a second shutter,
The device can be made substantially thinner.

Moreover, by providing the second shutter in addition to the first shutter, it is possible to easily and surely confirm whether or not the cartridge is loaded by determining which shutter is in the closed state. Therefore, the cartridge erroneous insertion preventing means is unnecessary.

[Brief description of drawings]

1 (a) and 1 (b) are cross-sectional views showing an embodiment of an optical disk device of the present invention, FIG. 1 (a) shows an inserted state of a disk cartridge, and FIG. 1 (b) is a cartridge. Shows the end state of the loading operation. FIG. 2A is a sectional view of an optical disk device showing another embodiment of the present invention. FIG. 2 (b) is FIG. 1 (a) and (b).
FIG. 6 is a cross-sectional view for explaining the effect of the device shown in FIG. Third
FIGS. 3A and 3B are cross-sectional views of an information recording / reproducing apparatus having a conventional front loading mechanism, FIG. 3A shows a cartridge insertion state, and FIG.
Indicates the end state of the loading operation of the cartridge. 101 ... Magneto-optical disk 102 ... Disk cartridge 103 ... Bias magnetic field 106 ... Magneto-optical head 107 ... Loading mechanism 108 ... Head frame 110 ... First shutter 111 ... Second shutter 113 ... Leaf spring, 122 ... Guide groove

Claims (1)

[Claims] 1. An insertion opening for inserting a cartridge containing a magneto-optical disk into an apparatus, and a holder for receiving the cartridge inserted through the insertion opening.
A loading mechanism for moving the holder in a vertical direction by a predetermined distance, a base on which magnetic field generating means for applying a magnetic field to the disk is mounted, and a base for moving the magnetic field generating means close to the disk. In a magneto-optical recording / reproducing apparatus including a base moving unit that moves a distance larger than the predetermined distance in the vertical direction, the cartridge insertion port is closed when the cartridge is not inserted, and the cartridge is rotated by being pushed by the cartridge when the cartridge is inserted. In addition, after the insertion, the first shutter provided in the holder is kept in contact with the outer peripheral surface of the cartridge to maintain the open state, and the base is interlocked with the cartridge, and the cartridge is inserted after the cartridge is inserted. And a second shutter provided on the base for closing the insertion opening. Apparatus.