JPH06162601A - Magneto-optic disk drive apparatus - Google Patents

Abstract

PURPOSE:To make a recording means detachable from the body of the apparatus and also lightweight and compact when used exclusively for reproduction of data. CONSTITUTION:When a lid 2 is opened, a macro switch 100 is kept OFF and an objective lens 11 of an optical pickup device 7 is urged by a spring to the innermost periphery of a magneto-optic disk 4. An overwrite head is also urged to the innermost periphery of the magneto-optic disk 4. An overwrite head 51 and the optical pickup device 7 are electrically and mechanically registered by a related part. When the lid 2 is closed, the macro switch 100 of the body 1 of the apparatus is turned on. In response to the ON signal, an optical block 10 is positioned at the innermost periphery of the disk 4. When the apparatus is used exclusively as a portable reproducing apparatus, the kit of the overwrite head 51 is removed from inside the lid 2. Accordingly, the apparatus becomes lightweight.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a magneto-optical disk (M
The present invention relates to a magneto-optical disk drive device for recording information on or reproducing information recorded on this magneto-optical disk.

[0002]

2. Description of the Related Art A magneto-optical disk drive device of this type has, for example, an optical block section for reading information stored in a magneto-optical disk and an overwrite head section for recording information on the disk. is doing. The optical block portion and the overwrite head portion are integrally attached to the main body of the magneto-optical disk drive device. As described above, the integral structure is provided because it is necessary to link the optical block portion and the overwrite head portion with the same pit of the magneto-optical disk.

[0003]

However, in the case of simply reproducing information from the magneto-optical disk, this overwrite head section is unnecessary. In this case, if this overwrite head part can be removed,
It is portable and has excellent portability. Therefore, realization of such a magneto-optical disk drive device having excellent portability is desired. The present invention has been made to solve the above problems, and an object of the present invention is to provide a magneto-optical disk drive device that can be made lightweight and compact when used as a read-only machine.

[0004]

In the present invention, the above object is to provide an optical means for reading information recorded on a magneto-optical disk, and a recording means for recording information on the magneto-optical disk. , And the recording means is achieved by a magneto-optical disk drive device that is set to be removable.

In a state where the magneto-optical disk is mounted, the optical means and the recording means are preferably arranged so as to face each other with the magneto-optical disk interposed therebetween. Preferably, the recording medium has a main body and a lid for covering the magneto-optical disc, and the recording means is detachably attached to the lid. The recording means is preferably integrated with the lid body and is detachably set to the main body.

[0006]

With the above structure, when recording on a magneto-optical disk, the recording means records information on the magneto-optical disk. Otherwise, for example, when reproducing only the information recorded on the magneto-optical disk while carrying it, the recording means is removed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The examples described below are preferred specific examples of the present invention, and therefore, various technically preferable limitations are given, but the scope of the present invention particularly limits the present invention in the following description. Unless otherwise stated, the present invention is not limited to these modes.

FIG. 1 shows a magneto-optical disk drive device according to the present invention. The magneto-optical disk drive device has a main body 1 and a lid 2. The lid body 2 can be opened and closed with respect to the main body 1 via a hinge 13. A disc rotation drive unit 101 is provided in the main body 1. The disk rotation drive unit 101 has a turntable 5 and a spindle motor 6. The turntable 5 is attached to the spindle 6 a of the spindle motor 6.

The cartridge 3 has a magneto-optical disk 4 and a metal hub (not shown). When the cartridge 3 is attached to the turntable 5, the turntable 5
The metal hub of the cartridge 3 is magnetically attracted by a magnet (not shown) provided on the side.

In the main body 1, an optical pickup device 7 is provided.
Is provided. The optical pickup device 7 is for reading information stored in the magneto-optical disk 4. The optical pickup device 7 irradiates the signal recording surface of the magneto-optical disk 4 with laser light via the objective lens 11. This objective lens 11
Are provided for the optical block unit 10. The optical block unit 10 has an arrow X by the parallel guide shafts 8 and 9.
It is possible to feed by a feeding means (not shown) along the direction, that is, the radial direction of the magneto-optical disk 4.
The optical block unit 10 has an optical system that guides the laser light to the objective lens 11 and guides the laser light reflected by the surface of the magneto-optical disk 4 to the light receiving unit. In this way, the plane of polarization of the reflected light from the magneto-optical disk 4 rotates in the positive or negative direction corresponding to the N or S magnetic domain recorded on the magneto-optical disk 4.

An overwrite head unit 120 is detachably set inside the lid 2. The overhead unit 120 is of a normal magnetic field modulation overwrite type, for example, and is a recording unit capable of recording and erasing information on the magneto-optical disk 4 by using light and magnetism.

As shown in FIG. 2, the overwrite head unit 120 has an overwrite head portion 51, and the overwrite head portion 51 has a guide shaft 12.
2 and an overwrite head arm 54. A head 56 is provided on the overhead arm 54. The arm 54 is movable in the arrow X direction, that is, in the radial direction of the magneto-optical disk 4 along the guide shaft 122 by means not shown. The head 56 is a magnetic head.

As described above, the overwrite head portion 51 and the optical pickup device 7 are arranged at positions facing each other with the magneto-optical disk 4 interposed therebetween. Moreover, the overwrite head portion 51 and the optical pickup device 7 can move in the direction of the arrow X in synchronization. A micro switch 100 is set on the main body 1 side. As shown in FIG. 4, the overwrite head portion 51 has, for example, recesses 153 and 154 for engagement. Further, protrusions 151 and 152 for engagement are provided inside the lid body 2. As a result, the kit of the overwrite head portion 51 with respect to the lid body 2 can be positioned and fitted.

Next, an example of use in the above embodiment will be described. First, when recording or erasing information on the magneto-optical disk 4 or reproducing information on the magneto-optical disk 4, the magneto-optical disk drive device of FIG. Function. That is, the overwrite head portion 51 is set inside the lid body 2. In this state, when the lid body 2 is opened, the micro switch 100 is not on and the power is off.
At this time, the objective lens 11 of the optical pickup device 7 is positioned at the innermost circumference of the magneto-optical disk 4. This is biased by a spring, for example, and the optical block 1 is mechanically forced.
0 is located on the innermost circumference side. Similarly, in the power-off state, the overwrite head side is also located on the innermost side of the magneto-optical disk 4.

After the alignment is performed as described above, the overwrite head portion 51 and the optical pickup device 7 are electrically and mechanically aligned by the associated portion 88. This allows both to move in synchronization. next,
When the lid 2 is closed, the micro switch 100 on the main body 1 side
Turns on. By the ON signal of the micro switch 100, the optical block 10 of the optical pickup device 7
If it is not located at the innermost circumference of the optical magnetic disk 4, it is located at the innermost circumference.

Next, a case where the magneto-optical disk drive device of this embodiment is used as a reproduction-only device which can be easily carried will be described. In this case, the kit of the overwrite head portion 51 is removed from the inside of the lid body 2. As a result, the weight is reduced by the weight of the overwrite head portion 51, and the portable portability is improved.

Next, another preferred embodiment of the magneto-optical disk drive device of the present invention will be described with reference to FIGS. In this case, the optical pickup device 207 is arranged inside the main body 201. The optical pickup device 207 has lenses 220, 221, 222, an objective lens 223, and a sensor 224. The cover 202, which is also called a cover, is provided with an overwrite head portion 251. The overwrite head portion 251 and the lid 202 are integrally formed. The magneto-optical disk 4 is arranged between the overwrite head unit 251 and the optical pickup device 207.

In this embodiment, by removing the lid 202 and the overwrite head portion 251 from the main body 201, the overwrite head portion 251 can be separated from the main body 201. When used as a reproduction-only device, that is, a portable device, a relatively thin cover 250 may be attached to the main body 201 to protect the magneto-optical disk as shown in FIG.

Next, referring to FIG. In another embodiment shown in FIG. 6, the lens groups 320 and 3 are provided on the main body 301.
21, 322, an objective lens 323, and a light receiving sensor 324. A C-shaped or L-shaped overwrite head portion 351 is set to be detachable from the main body 301.

Next, another embodiment will be described with reference to FIGS. 7 and 8. 7 and 8 show a so-called stationary type magneto-optical disk drive device 410. The magneto-optical disk drive device 410 is set on the housing 400 side at the time of recording / reproducing shown in FIG. Although not shown, an overwrite head unit is set in the housing 400.
The magneto-optical disk drive device 410 includes the housing 400
It can be removably inserted into. The magneto-optical disk drive device 410 is, for example, a feeding mechanism unit (excluding a loading mechanism unit). When the magneto-optical disk drive device 410 is pulled out from the housing 400, the result is as shown in FIG. Magneto-optical disk drive device 410
Can be used as

The present invention is not limited to the above embodiment. For example, in the first embodiment, the present invention is not limited to the so-called positioning and engaging method as shown in FIG. Positioning and attachment may be performed. Further, the contact type micro switch shown in FIG. 1 is not limited, and a photo sensor may be used, for example.

[0022]

As described above, according to the present invention, the recording means for storing information on the magneto-optical disk is detachable or separable as the need arises. Therefore, the apparatus after the recording means is removed. Can be made lightweight and compact. Then, it can be used as a reproduction-only drive device having excellent portability. In other words, in the magneto-optical disk drive device, the recording means is a functional part necessary for writing and erasing information on the disk. A compact drive device can be built. It will also be possible to sell only separated recycled machines.

[Brief description of drawings]

FIG. 1 is a perspective view showing a preferred embodiment of a magneto-optical disk drive device according to the present invention.

FIG. 2 is a perspective view showing a lid body and an overwrite head portion detachable from the lid body.

FIG. 3 is a perspective view showing an example of positioning a lid and an overwrite head portion.

FIG. 4 is a diagram showing another embodiment of the magneto-optical disk drive device of the present invention.

5 is a diagram showing a state in which an overwrite head portion is removed in the embodiment of FIG.

FIG. 6 is a diagram showing still another embodiment of the magneto-optical disk drive device of the present invention.

FIG. 7 is a perspective view showing still another embodiment of the magneto-optical disk drive device of the present invention.

8 is a perspective view showing a state in which the magneto-optical disk drive device in the embodiment of FIG. 7 is used as a reproduction-only machine.

[Explanation of symbols]

 1 Main Body 2 Lid 3 Cartridge 4 Magneto-optical Disk 7 Optical Pickup Device (Optical Means) 10 Optical Block 11 Objective Lens 51 Overwrite Head 56 Magnetic Head 120 Overwrite Unit (Recording Means)

Claims (4)

[Claims] 1. A magneto-optical disk drive device comprising: an optical means for reading information recorded on a magneto-optical disk; and a recording means for recording information on the magneto-optical disk. The magneto-optical disk drive device is characterized in that it is detachably set. 2. The magneto-optical disk drive according to claim 1, wherein the optical means and the recording means are arranged so as to face each other with the magneto-optical disk in the mounted state. apparatus. 3. The light according to claim 1, further comprising a main body and a lid for covering the magneto-optical disk, wherein the recording means is detachably attached to the lid. Magnetic disk drive device. 4. The magneto-optical disk drive device according to claim 3, wherein the recording means is set to be removable from the main body integrally with the lid body.