JP3077385B2 - Cleaning disk and method of cleaning magneto-optical recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning disk used in a magneto-optical recording / reproducing apparatus using a magnetic head used for an external storage device of a computer, a recording / reproducing device for music and video signals, and other information. It is.

[0002]

2. Description of the Related Art In recent years, with the development of electronic computers and the development of means for high-speed and large-scale transmission of information, a low-cost, high-density, large-capacity, high-speed transfer capability nonvolatile memory device has been demanded.
In many cases, a fixed magnetic disk drive is used. However, since the medium cannot be exchanged, there is a problem that the recording density per unit volume is low and the price per information unit is high. Although there is a magnetic disk device in which the medium can be exchanged, there are still problems in terms of recording density and reliability. Optical recording is currently in the spotlight as a technique for solving those problems, and rewritable magneto-optical recording is particularly expected in many fields.

[0003] In magneto-optical recording, it is difficult to overwrite using a recording technique based on optical modulation. Therefore, in recent years, an overwriting technique based on magnetic field modulation has been studied, and many reports have been made. The above method is similar to the recording method of a fixed magnetic disk or a flexible disk, and modulates a magnetic field applied to a magneto-optical disk by a floating or sliding magnetic head, but the size of a recording bit is reduced by a converged laser beam. Control by the convergence diameter.

[0004]

However, in the above-mentioned apparatus, since a medium can be exchanged, a sealed structure cannot be taken, and dust accumulation always occurs inside the apparatus. Particularly, an objective lens for irradiating a laser beam is required. The deposition of dust on the magnetic head which applies a magnetic field causes a serious effect on the apparatus.

The present invention has been made in consideration of the above problems, and provides a cleaning disk that allows a user to easily and automatically remove dust accumulated on an objective lens and a magnetic head.

[0006]

In order to solve the above-mentioned problems, a cleaning disk of the present invention has a first surface on which a light spot is irradiated and a second surface opposite to the first surface.
The information recording film has a management area where management information is recorded at a specific radial position, and the objective lens is cleaned on at least a part of the first surface except for the vicinity of the radial position where the management area exists. Providing a first cleaning means,
At least a part of the second surface is provided with a second cleaning unit for cleaning the magnetic head.

[0007]

According to the present invention, the first cleaning means and the second cleaning means simultaneously clean the objective lens and the magnetic head by simply inserting the cleaning disk into the apparatus and putting the apparatus into an operating state. And effective cleaning is easily realized.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cleaning disk according to an embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a cleaning disk according to a first embodiment of the present invention. For convenience, the side of the cleaning disk where the magnetic head approaches is called the magnetic head side, and the side where the objective lens approaches is called the objective lens side. 1A is a plan view of the cleaning disk on the magnetic head side, FIG. 1B is a side view of the same, and FIG. 1C is a plan view of the cleaning lens on the objective lens side. FIG. 2 is a side view showing a main part.

In FIG. 2, reference numeral 1 denotes a disk having the same shape as a magneto-optical disk used in a device to be cleaned. The disc 1 is a transparent substrate 1 made of polycarbonate or the like.
a, a recording layer 1b made of a material that reflects laser light,
It is composed of a protective layer 1c made of resin or the like, and is provided with a large number of concentric or spiral recording tracks centered on the rotation center.

In FIG. 2, reference numeral 14 denotes an objective lens which gives a laser beam 15 from an optical system (not shown) as a converged light spot to the recording layer 1b from the substrate 1a side. Reference numeral 10 denotes a magnetic head, which is disposed on the opposite side of the objective lens 14 with the disk 1 interposed therebetween, and applies a recording magnetic field to a position of a light spot by the objective lens 14.

As shown in FIG. 1, the recording layer 1b of the disc 1
Includes a management area 100, a first recording area 101, a second recording area 102, and a third recording area 103. The management area 100 includes a first recording area 101, a second recording area 1
02, information on the position of the third recording area 103 is recorded. The length of the second recording area 102 in the radial direction is such that at least the disc 1 makes one rotation when the objective lens 14 performs a seek operation from the end of the first recording area 101 to the beginning of the third recording area 103. Has only a length.

In FIG. 1 or FIG. 2, reference numeral 20 denotes a magnetic head brush made of a fiber provided on the protective layer 1c and substantially perpendicular to the protective layer 1c, and is provided over the entire area where the magnetic head 10 reaches. . Reference numeral 30 denotes an objective lens brush provided on the substrate 1a and made of a fiber substantially perpendicular to the substrate 1a, and an oval area having a longitudinal direction substantially in the radial direction inside the second recording area 102. It is provided in.

The brush 20 for the magnetic head and the brush 30 for the objective lens are respectively operated by the magnetic head 10 in the operating state of the apparatus.
And the length enough to contact the objective lens 14.

The operation of the cleaning disk configured as described above will be described below with reference to the drawings.

First, when the cleaning disk is inserted into the apparatus, information in the management area 100 is read, and the first to third information are read.
Of the recording areas 101 to 103 are stored in the apparatus. Thereafter, the reproducing operation of the first recording area 101 is performed, and when the user issues a seek instruction to the third recording area 103, the objective lens 14 performs the first recording on the disc 1 as shown in FIG. A third trajectory 103 is drawn by drawing a spiral trajectory as shown from the last point P1 of the area 101.
Reaches the first point P2. At this time, the second recording area 1
Since the object lens 02 has a sufficient radial length, the objective lens 14 always passes through the objective lens brush 30. FIG. 2 shows details of this state. The disk moves in the direction of arrow A. At this time, the magnetic head 10 is
The objective lens 14 is cleaned by contacting the objective lens brush 30. Therefore, cleaning of the magnetic head 10 and the objective lens 14 is completed simultaneously by one operation.

As described above, according to the present embodiment, since the magnetic head brush 20 and the objective lens brush 30 are provided on both surfaces of the disk 1, cleaning of the magnetic head 10 and the objective lens 14 is extremely easy at the same time. Can be done.
In addition, since the magnetic head brush 20 is provided on almost the entire surface on the magnetic head side, the variation in frictional force between the magnetic head 10 and the magnetic head brush 20 due to the seek operation is small,
Therefore, the operation becomes stable.

A second embodiment of the present invention will be described below with reference to the drawings. FIG. 4 shows a main part of a cleaning disk according to a second embodiment of the present invention.
In FIG. 4, the disk 1, the magnetic head 10, the objective lens 14, the laser beam 15, and the brush 30 for the objective lens comprising the substrate 1a, the recording layer 1b and the protective layer 1c are the same as those in the first embodiment. Reference numeral 21 denotes a felt layer for a magnetic head made of a soft material such as a fiber.
And contacts the disk-facing surface of the magnetic head 10 in the operating state of the apparatus as shown in FIG.

[0019] While the operation and effects of the present embodiment is substantially the same as the first embodiment, since the cleaning means of the magnetic head 10 is felt layer 21 for the magnetic head, the magnetic head
It does not need to be formed vertically compared to the brush 20 for
Since it is possible to perform wet cleaning with a liquid such as ethanol , it is also possible to remove fat-soluble stains and the like.

In the first and second embodiments, the cleaning means of the magnetic head 10 is
0, the felt layer 21 for the magnetic head is used. However, when the magnetic head 10 is slidable, in order to remove more strongly sticky stains or the like, for example, fine ceramic or fine diamond particles may be added to the cleaning means. You may use the abrasive | polishing agent containing etc.

Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. 5A is a plan view of the cleaning disk on the magnetic head side, FIG. 5B is an end view of the same side, and FIG. 5C is a plan view of the cleaning lens on the objective lens side.

In FIG. 5, reference numeral 2 denotes a disk, which has the same structure and shape as the disk 1 of the first embodiment. The brush 30 for the objective lens and the first recording area 101 are also the same as those of the first embodiment. is there. Management area 104, second recording area 105,
The third recording area 106 basically performs the same function as the management area 100, the second recording area 102, and the third recording area 103 in the first embodiment. The second recording area 105 of the present embodiment is set to have a larger radial dimension than the second recording area 102 of the first embodiment. The third recording area 106 of the present embodiment is different from the third recording area 103 of the first embodiment only in the radial position.
Information relating to the positions of the first recording area 101, the second recording area 105, and the third recording area 107 is recorded in the management area 106.

The magnetic head cleaning means of this embodiment is a combination of two types of means, a magnetic head brush 22 and a magnetic head abrasive 23. Brush 23 for magnetic head
Are provided only in a region on the inner peripheral side of the magnetic head brush 20 of the first embodiment. The magnetic head abrasive 23 contains fine diamond particles and the like, and is provided on the outer peripheral side of the magnetic head brush 22.

The rest of the configuration is the same as in the first embodiment and will not be described. The operation of the present invention is almost the same as that of the first embodiment, except that the first recording area 101 to the third recording area 1
06, the magnetic head passes through the magnetic head brush 22, and further the magnetic head abrasive 2
Pass 3 Therefore, large dusts and the like are removed by the magnetic head brush 22, and sticky dust is removed by the magnetic head abrasive 23.

As described above, according to the present embodiment, a simpler and more complete cleaning effect can be expected due to the two-stage cleaning effect of the composite cleaning means of the magnetic head brush 22 and the magnetic head abrasive 23.

In the present embodiment, a two-type cleaning disk of a brush and an abrasive is used. However, other combinations or three or more types of cleaning disks may be used. When a composite cleaning disk is configured in this way, it should be configured to remove large dusts and the like in order. That is,
Since an optical disc generally starts scanning from the radially inner side, when three types of brushes, felts and abrasives are used, it is most effective to arrange them in this order from the radially inner side. The same applies to the two cases.

Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. 6, 7, and 8 show a cleaning disk according to a fourth embodiment of the present invention. This embodiment is an embodiment for an apparatus using a cartridge.

The disk 1 has a shape including the state of the recording area,
The structure is the same as that of the first embodiment. The brush 30 for the objective lens is the same as that of the first embodiment.

FIG. 6A is a plan view, and FIG. 6B is a side view showing only the cartridge in cross section.

In FIG. 6, reference numeral 40 denotes a cartridge containing the disk 1. A shutter structure, a write protect structure, and the like are omitted. The cartridge 40 includes a magnetic head side shell 40a and an objective lens side shell 40b. The magnetic head side shell 40a is provided with a magnetic head window 40c through which the magnetic head approaches the disk 1. The objective lens side shell 40b is provided with an objective lens window 40d through which the objective lens approaches the disk 1. And a motor access hole 40e into which the spindle motor is inserted. Further, a liner 41 made of a nonwoven fabric and having the same outer diameter as the disk 1 is provided between the magnetic head side shell 40a and the disk 1.

FIG. 7A is a plan view showing the inside of the magnetic head side shell 40a, and FIGS. 7B and 7C are side views showing a section BB and a section CC, respectively.

As shown in FIG. 7, the magnetic head side shell 40
A window rib 40f is provided around the inside of the magnetic head window 40c of FIG. Also, the liner 41
Has a substantially C shape sandwiching the window rib 40f. The window rib 40f has a structure for preventing rotation of the cartridge 40, and is bonded to the magnetic head side 40a by a bonding portion 41a.

As shown in FIGS. 7A and 7C, a presser spring 42 having one end fixed to the inside of the magnetic head side shell 40a is provided inside the magnetic head side shell 40a. The free end pushes the liner 41 toward the disk 1.

FIG. 8 is a view showing the disk 1 incorporated in the cartridge 40 taken out. FIG. 8 (a) is a plan view of the magnetic head side, FIG. 8 (b) is a side view, and FIG. 8 (c) is an objective lens. It is a top view of a side.

In FIG. 8, reference numeral 24 denotes an abrasive for a magnetic head,
This is the same material as the magnetic head abrasive 23 used in the embodiment . The magnetic head abrasive 24 is provided over the entire moving range of the magnetic head, similarly to the magnetic head brush 20 of the first embodiment.

The operation of the cleaning disk configured as described above will be described below with reference to the drawings.

FIG. 9 is a diagram showing the operation of the present embodiment. The magnetic head 10, the objective lens 14, and the laser beam 15 are the same as those in the first embodiment. The cartridge 40 is omitted except for a part. The basic operation of this embodiment is almost the same as that of the first embodiment.

When the objective lens 14 seeks from the first recording area 101 to the third recording area 103, the objective lens 14 comes into contact with the brush 30 for the stubby lens, and the objective lens 30 is cleaned and at the same time, the magnetic head 10 is moved. The surface facing the disk 1 slides in contact with the abrasive 24 for the magnetic head, and is polished and cleaned. The polishing waste generated at this time moves together with the disk 1 in the direction of arrow A, and reaches the contact point between the liner 41 and the abrasive 24. Liner 4
1 has one end pressed against the abrasive 41 by a pressing spring 42 fixed to the magnetic head side shell 40a, so that the polishing debris always contacts the liner 41 and is absorbed.

As described above, according to the present embodiment, the magnetic head 10 and the objective lens 14 are simultaneously cleaned and the polishing debris is absorbed by the liner 41. The device is not stained during cleaning, and the reliability is improved.

[0040]

As described above, according to the present invention, the side on which the light spot is irradiated is defined as the first surface, the surface opposite to the first surface is defined as the second surface, and the information recording film is specified. There is a management area where management information is recorded at a radial position, and a first cleaning means for cleaning the objective lens is provided on at least a part of the first surface except for the vicinity of the radial position where the management area exists, and a second cleaning means is provided. The second cleaning means for cleaning the magnetic head on at least a part of the surface
The first cleaning means and the second cleaning means simultaneously clean the objective lens and the magnetic head simply by inserting the cleaning disk into the apparatus and putting the apparatus into an operating state, thereby achieving safe and easy effective cleaning. The present invention can realize a cleaning disk capable of obtaining various excellent effects such as improvement of data reliability.

[Brief description of the drawings]

1A is a top view of a cleaning disk according to a first embodiment of the present invention, FIG. 1B is a side view thereof, and FIG.

FIG. 2 is a side view of a main part of the magneto-optical reproducing device and the cleaning disk in the embodiment.

FIG. 3 is a top view of a cleaning disk for explaining operation in the embodiment.

FIG. 4 is a side view of main parts of a magneto-optical reproducing device and a cleaning disk according to the second embodiment.

5A is a top view of the cleaning disk according to the third embodiment, FIG. 5B is a side view thereof, and FIG. 5C is a bottom view thereof.

6A is a top view of the fourth embodiment, and FIG. 6B is a sectional side view of the same.

7A is a view showing the inside of a cartridge according to the fourth embodiment. FIG. 7B is a sectional view taken along the line BB in FIG. 7C. FIG.

8A is a top view of the cleaning disk according to the fourth embodiment, FIG. 8B is a side view thereof, and FIG. 8C is a bottom view thereof.

FIG. 9 is a side view of a main part of a magneto-optical reproducing device and a cleaning disk according to the fourth embodiment.

[Explanation of symbols]

 Reference Signs List 1 disc 20 brush for magnetic head 21 felt layer for magnetic head 23 abrasive for magnetic head 30 brush for objective lens 40 cartridge 41 liner 42 holding spring

Continuation of the front page (72) Inventor Hideki Aiko 1006 Kazuma Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-3-16070 (JP, A) JP-A-4-155610 (JP) JP-A-3-273578 (JP, A) JP-A-3-219448 (JP, A) JP-A-3-40208 (JP, A) (58) Fields studied (Int. Cl. ⁷ , DB G11B 11/105 G11B 5/41 G11B 7/12

Claims (4)

(57) [Claims] 1. A laser beam is radiated by an objective lens as a light spot onto a magneto-optical disk having a recording format in a circumferential or helical shape, and is opposite to a position irradiated with the light spot across the magneto-optical disk. A cleaning head used in a magneto-optical recording and reproducing apparatus for recording data by applying a magnetic field for recording and erasing to the position of the light spot on the magneto-optical disk by a magnetic head provided on the side of the magneto-optical disk; A disk having substantially the same shape and at least an information recording layer in a substantially same part as the magneto-optical disk, and a side irradiated with the light spot as a first surface;
A surface opposite to the first surface is defined as a second surface, and the information recording layer has a management area in which management information is recorded at a specific radial position. A first cleaning unit for cleaning the objective lens is provided on at least a part of the first surface except for the first surface, and a second cleaning unit for cleaning the magnetic head is provided on at least a part of the second surface. Previous
A cleaning disk used after reading the management information . 2. The management area is recorded as having at least three continuous recording areas on the cleaning disk. Of the three recording areas, an inner circumference and an outer circumference of a second recording area from an inner circumference are recorded. claim 1 Symbol placement of the cleaning disc, characterized in that a first cleaning means between. 3. The method according to claim 1, wherein the laser light is converted into a light spot by an objective lens.
Light having a recording format in a circumferential or spiral shape
Irradiate the magnetic disk, and place the magneto-optical disk
Provided on the side opposite to the position where the light spot is irradiated
A magnetic head for recording and erasing is applied to the magneto-optical disc by a magnetic head.
Data at the position of the light spot on the
In the magneto-optical recording and reproducing apparatus, the magneto-optical disk
It has substantially the same shape, and
It has at least an information recording layer and is irradiated with the light spot.
Side as a first surface, and a surface opposite to the first surface as a second surface.
And the information recording layer has management information at a specific radial position.
Is recorded in the management area, and the management area exists.
At least a part of the first surface excluding the vicinity of the radius position where
First cleaning means for cleaning the objective lens
And a magnetic means provided on at least a part of the second surface.
The second Cleaning means for cleaning the air-head
Using the provided cleaning disc, at least the pipe
Use the cleaning disc after reading the
Cleaning the magnetic head and objective lens
Cleaning a magneto-optical recording and reproducing apparatus
Method. 4. The management area has a small area on a cleaning disk.
It is recorded that there are at least three continuous recording areas
Of the three recording areas,
A first cleaning means is provided between the inner and outer circumferences of the recording area.
A cleaning disk using a cleaning disk
The method for cleaning a magneto-optical recording / reproducing apparatus according to claim 3.