JP2000173029A - Cleaning disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently attain a work by preventing any signal reading error from being caused in cleaning a magnetic head and a pickup lens, and uniquely cleaning an optical lens and the magnetic head. SOLUTION: A lens cleaning brush 2 is provided on one face of a disk 1, and a magnetic head cleaning sheet 3 is arranged so as to be laminated to the other face of the disk 1 in this cleaning disk 1 for a magneto-optical disk device. A brush planting hole 4 is formed through the disk 1, and the brush 2 is put through the brush planting hole 4 from one face of the disk to the cleaning sheet face, and projected to the other side, or projected and then bent along the disk face, and a brush end 201 or a brush bending end part is adhered and fixed by an adhering part 5. Also, a spacer 7 equipped with an opening 6 for housing the brush end part 201 or the brush bending part including the adhering part 5 projected and fixed at the cleaning sheet 3 side is interposed and arranged between the disk 1 and the magnetic head cleaning sheet 3, and the surface of the cleaning sheet 3 is constituted as a flat face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning disk for cleaning and removing dirt, dust, shavings, and other foreign matters adhering to an optical lens or a magnetic head in an information recording / reproducing system, that is, a lens cleaning member. The present invention also relates to a cleaning disk for a magneto-optical disk device for simultaneously cleaning a lens and a magnetic head with a disk having a magnetic head cleaning member.

[0002]

2. Description of the Related Art In a conventional cleaning cartridge,
A commonly used disk, for example, a magnetic disk or a disk-shaped cleaning sheet having the same shape as a magneto-optical disk is rotated and cleaned by contacting a lens or a magnetic head. In the type information recording / reproducing system, various foreign substances adhering to the optical lens are removed by a brush protruding on one side of the disk, and the magnetic head is impregnated with the abrasive-coated disk or cleaning liquid. It is known that a water-absorbed disk is used to remove dirt and keep a lens and a magnetic head clean.

[0003]

However, in a conventional cleaning disk for cleaning an objective lens and a magnetic head of an optical pickup of a recording / reproducing apparatus using a magneto-optical disk (cartridge), a cleaning disk dedicated to a lens and a magnetic head are used. The dedicated cleaning disk is separate, and it is necessary to perform cleaning using a separate cleaning disk, and handling is complicated. Also, simply providing a cleaning member for the lens and the magnetic head on the disk and using the same to clean both the lens and the magnetic head uniformly (Japanese Patent Laid-Open No. 3-16 / 1991).
No. 070) is also known, but in a method of providing a cleaning member, a lens cleaning brush is fixed to another tapered member, which is inserted into a tapered hole of a disk, and an adhesive tape is stuck on the bottom surface side. (Japanese Patent No. 2540339), or a brush is fixed with a tape on the back side of the surface to be cleaned (Japanese Patent Laid-Open No. 8-235).
No. 628), a fiber material is bundled in a brush shape and implanted on the disk surface (Japanese Patent Laid-Open No. 7-169081), or a brush is fixed to a groove or a hole on one surface of the disk with an adhesive and a magnetic material is fixed on the other surface. There is disclosed a disk on which a head cleaning sheet can be adhered and both the optical lens and the magnetic head can be cleaned at the same time. (JP-A-7-6431)

In a magneto-optical disk player, an optical lens and a magnetic head are provided at positions facing the respective surfaces of the disk. In order to be able to clean both of them at the same time, the respective surfaces of the disk need to be cleaned. A cleaning member must be provided. However, when the brush c is inserted into the through hole b of the disk a and the brush c is fixed to the surface opposite to the optical lens with an adhesive tape d as in the conventional case (FIG. 4), or the brush is inserted through the through hole. When cut to the specified amount and fixed with adhesive, some convex parts are created,
If the magnetic head cleaning member e is further adhered thereon, the amount of protrusion of the protruding portion f increases and appears as undulation on the surface of the magnetic head cleaning sheet.
The problem is that the contact of the magnetic head becomes strong and it becomes an obstacle, which causes abnormal noise or an error during cleaning.In addition, if the lens cleaning brush is fixed to another member, the number of parts will increase. Increases the cost and increases the size of the hole in the disc.
This also causes an error, is difficult to handle, and has a problem in reliability. In particular, conventionally, 0.2 mm
Even if there is a convex part (for fixing the brush) of a degree, there was no problem if the change in the thickness was gradual. In addition, there are some errors, and practically smaller decks and lower power are pursued in practice, so if there is a fine protrusion on the disk, the magnetic head will hit it and stop the rotation of the disk will occur There was a fear.
The present invention is intended to eliminate these conventional disadvantages, and simplifies the cleaning operation, eliminates signal reading errors when cleaning the magnetic head and the pickup lens, and can uniformly clean the optical lens and the magnetic head. Cleaning can be carried out efficiently, dusts adhering or deposited on each object can be cleaned and removed extremely easily, high performance can be maintained, and a cleaning effect for a magneto-optical disk device having high cleaning effect and high reliability can be obtained. It is intended to provide disks at low cost.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a cleaning disk for a magneto-optical disk drive, comprising a lens cleaning brush on one surface of a disk and a magnetic head cleaning sheet attached to the other surface of the disk. , Provided through the disc through a hole for brush installation,
A brush is inserted into the brush installation hole from one side of the disk toward the cleaning sheet surface and protrudes from the other side, or is bent along the disk surface after protruding, and the brush end or the bent end of the brush is bonded. A spacer having an opening capable of accommodating a brush end or a brush bent end including an adhesive portion protruded and fixed to the cleaning sheet side is interposed between the disk and the magnetic head cleaning sheet. Thus, the magnetic head cleaning sheet has a flat surface.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a preferred embodiment of the present invention, when a cleaning disk is mounted on a magneto-optical disk device and recording and reproducing operations are performed, the cleaning disk is rotated. At the same time as cleaning the optical lens, the magnetic head cleaning sheet on the other surface of the disk is brought into contact with the magnetic head of the magneto-optical disk drive and travels, and dust and dirt, shavings, Other foreign substances can be cleaned and removed. At this time, a spacer having a brush end protruding toward the magnetic head or a brush bent end and an opening capable of accommodating the bonding portion is provided on the disk and the magnetic head cleaning sheet so that the bonding portion of the brush does not protrude to the other surface of the disk. By preparing the surface of the magnetic head cleaning sheet flat,
There is no signal reading error at the time of cleaning the magnetic head and the pickup lens, and the cleaning work of the optical lens and the magnetic head can be performed uniformly and efficiently. Then, the lens cleaning brush and the magnetic head cleaning sheet provided on the disk come into contact with the surface of the objective lens and the magnetic head, which are in a relative relationship with the disk, so that dirt and foreign matter can be removed. The surface can be kept clean with one disk at all times, and can be used as a highly reliable magnetic head and lens cleaner having a cleaning effect. That is, in the recording / playback player,
Recording without error during cleaning (recording)
By simply operating, you can clean both the pickup lens and the magnetic head.
The pickup lens can be cleaned only by performing the reproducing operation.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2. A disk 1 is provided with a lens cleaning brush 2 on one surface and a magnetic head cleaning sheet on the other surface. 3. A cleaning disk for a magneto-optical disk drive having a disk 3 attached thereto, wherein the disk 1 is provided with a brush mounting hole 4 penetrating therethrough, and the brush 2 is inserted into the brush mounting hole 4 on one surface of the disk 1. It is inserted toward the cleaning sheet surface from protruding to the other, as well as bonded to the disc 1 by the adhesive portion 5 to the brush end 20 _1, the brush end 20 comprising an adhesive portion 5 projecting fixed to the cleaning sheet 3 side the spacer 7 having an opening 6 which may contain _one intervention deployed surface of the magnetic head cleaning sheet 3 between the disc 1 and the magnetic head cleaning sheet 3 There the cleaning disc 10 constructed in Tanmen.

In another embodiment of the present invention, FIG.
The brush 2 is inserted through a brush planting hole 4 penetrating the disk 1 from one surface of the disk 1 toward the cleaning sheet surface, and then protrudes to the other side. The brush 2 is bent along the disk surface. A spacer 7 having an opening 6 capable of accommodating the brush bent end 20 including the adhesive 5 protruded and fixed to the cleaning sheet 3 while the brush bent end 20 is adhered and fixed to the disk 1 by the adhesive 5. Is provided between the disk 1 and the magnetic head cleaning sheet 3 to form a cleaning disk 10 in which the surface of the magnetic head cleaning sheet 3 is flat.

The lens cleaning brush 2 is provided with the bonding portion 5 made of a polyester resin fiber and made of any one of a silicone-based, an acrylic emulsion-based, and a urethane-based adhesive. There is no hardening of the brush and it is good in environmental preservation.

In the case where the brush planting hole 4 is provided so as to penetrate from the one surface of the disk 1 to the other surface in the vertical direction, if the diameter of the hole to be drilled is large, an error occurs depending on the model, so that the hole is small. The diameter, for example, φ1 mm or less, is preferably 0.6 mm in the embodiment. As shown in FIG. 2, the brush 2 is inserted from one surface of the disk 1 to the other surface of the disk 1 and protrudes through the hole 4 (0.
1 to 0.3 mm) or the brush end protrudes from the surface opposite to the surface facing the optical lens as shown in FIG.
～0.3Mm) was bent, the brush ends 20 ₁
Alternatively, an adhesive portion 5 is applied to the brush bent end portion 20, and the adhesive portion 5 is adhered and fixed to the disk 1 or the magnetic head cleaning sheet 3, and the adhesive portion 5 is provided on the surface opposite to the optical lens surface. It is preferable to use a cleaning disk that does not protrude.

The lens cleaning brush 2 is made of a brush made of a fiber such as polyester resin or rayon and folded in two by a threading means and bundled. After the disc 1 is inserted from one surface of the disk 1 to the other surface in the vertical direction, the brush end is cut at a predetermined protruding position and is kept protruding, or is folded after protruding, and is bent and adhered 5, such as a silicon-based or acrylic emulsion. System and urethane-based adhesives can be evaluated in comparison with other adhesives in various points such as adhesive strength including temperature characteristics and environmental preservation. Therefore, this adhesive is selected and applied. Thereafter semi-cured state of the adhesive portion 5, while pressing the adhesive portion 5 is placed a magnetic head cleaning sheet 3 to the brush planting設用hole 4, the brush end 20 ₁ or brush bent end 20 and the disk 1 The brush is pinched, and the adhesive is solidified in the vertical plane of the brush planting hole 4. The brush 2 is provided at least partially in the radial direction of the rotating disk 1 and has a flocked member with the brush pointed in the vertical direction fixed thereto. The brush implanted in the direction in which it contacts the brush is fixed to one or a plurality of places.

One hour after the application, the adhesive force of the adhesive portion 5 shows a tensile force of 80 g or more or 150 g or more.
After 12 hours, a material having a tensile force of 150 g or more, which can easily be applied to the brush bent end portion 20 easily, and which does not harden other than the portion where the brush was applied first is preferably used. Even under environmental preservation conditions such as high temperature (90 ° C./5 days), low temperature (−30 ° C./5 days), and high temperature and high humidity (40 ° C./80%/5 days), there is no change in appearance or deterioration, and the same level as normal temperature Indicated. The brush bent end portion 20 includes a hole 2 for brush installation of the disc 1.
The disk 1 is bent in the circumferential direction along the disk surface, and is housed in the substantially elliptical opening 6 in which the disk circumferential direction formed in the spacer 7 is longer than the radial direction. The spacer 7 having the same thickness as the height of the bonding portion 5 including the bent end portion 20 is used to prevent a convex portion or a step on the cleaning sheet side.

With respect to the brush 2 and the bonding portion 5,
There are various types of brush materials, but in consideration of the durability of the cleaning effect, it is preferable to use polyester resin fibers with little settling. In the bonding portion 5, a silicone-based, acrylic emulsion-based, or urethane-based adhesive is used. It is better to select and use this adhesive because it can be evaluated in comparison with other adhesives in various points such as adhesiveness including properties and temperature characteristics, curing time, brush curing after curing of the adhesive, and environmental preservation.

The magnetic head cleaning sheet 3 is obtained by bonding fibers such as polyester, nylon and rayon to the surface of a plastic sheet (total thickness = 0.
2 to 0.4 mm). As the plastic sheet, polyester (PET) having excellent heat resistance is preferable in consideration of the environment in which the plastic sheet is used. The lower surface is an adhesive layer for attachment. A spacer 7 is provided between the disk 1 and the magnetic head cleaning sheet 3.
The opening 6 of, so that the pop-out part of the brush 2, i.e., the brush ends 20 ₁ or brush bent end 20 can be accommodated.

The opening 6 is preferably circular in Example 1 (FIG. 2) or, in Example 2 (FIG. 3), elliptical (elliptical) or rectangular extending in the circumferential direction of the disk. so that there is no gap between the brush end 20 ₁ or brush bent end 20 accommodated in, so never appear as waviness on the surface when pasted magnetic head cleaning sheet 3. In addition, since the head moves in the radial direction of the disk, the width of the radial undulation can be reduced by forming the opening 6 as described above.

The lower surface of the spacer 7 is also used as an adhesive layer so that it can be easily fixed to the disk 1. The size of the spacer 7 is preferably equal to or larger than that of the magnetic head cleaning sheet 3, and the thickness of the spacer 7 is considered to be the same as the thickness of the brush so as not to cause irregularities on the disk surface. You. In the disk 1 having such a configuration, there is no unevenness on the disk surface. However, since the total thickness of the disk may increase and a trouble such as rotation may occur, the total thickness t of the disk is 1.7 m.
If it is less than m, it will work without any problem. For example, since the disk is 1.2 mm and the sheet is 0.2 to 0.4 mm, the spacer 7 (= brush thickness) can be selected to have a thickness of 0.1 to 0.3 mm. For example, good running performance can be ensured without preventing rotation of the disk 1 (FIG. 3C). The material of the spacer is PET, similar to the base material of the magnetic head cleaning sheet 3.
C., the brush ends 20 ₁ or brush bent end 20 in the magnetic head cleaning sheet 3 is fixed by bonding.

Further, the cleaning disk 10 comprises:
A magnetic head cleaning sheet 3 for cleaning a magnetic head, such as an abrasive tape or flocking, is rotatably mounted in a case composed of an upper case 10 and a lower case 11 and is provided on a surface of the disk 1 facing the magnetic head on one side. And a lens cleaning brush 2 that comes into contact with the objective lens on the other side of the disk 1, and is used as a cleaning cartridge for a magneto-optical disk device.

In this case, the rotating disk 1 is provided with a center plate 12 at the center of a disk body, and a U-toc area formed of a groove on which optical information or a signal is recorded concentrically or spirally with the center plate 12. For example, information such as the number of pieces of music recorded in the recordable user area, the length of the music, the start and end addresses, etc. are recorded. The U-toc area is stored in the window 13 formed in the case. It is provided at the position of the rotating disk that is exposed.

The magnetic head cleaning sheet 3 includes:
Flocked or polished sheet of non-woven fabric, nylon or rayon fiber, for example, chromium oxide, aluminum oxide,
A sheet coated with an abrasive made of fine particles of silicon oxide or the like is adhered to one side of the rotating disk 1 via an adhesive tape or an adhesive in a ring shape larger than the sliding range of the head. In addition to a disk-like sheet like this,
It can be formed not only on the entire surface of the disk but also on a part thereof, and a cleaning effect can be enhanced by applying or impregnating a cleaning liquid as needed.

When the head cleaning brush 2 is bonded and fixed to the disk 1, the head cleaning brush 2 may be fixed directly to the disk 1 or may be fixed to a magnetic head cleaning sheet 3 bonded and fixed to the disk in another embodiment. . For example, a spacer 7 is attached to the disk 1 and a brush implant hole 4 formed through the disk 1.
The magnetic head cleaning sheet 3 is provided on the magnetic head cleaning sheet 3 by attaching the magnetic head cleaning sheet 3 on the spacer 7 in this state by bending the lens cleaning brush 2 into the opening 6 of the spacer 7 and pressing the lens cleaning brush 2. By using the adhesive portion of the adhesive layer to bond and fix the brush bent end portion 20, the lens cleaning brush 2 can be implanted and fixed to the disk 1.

In the figure, reference numeral 13 denotes a window hole formed on the surface of the case 11 facing the magnetic head and the surface facing the pickup lens. Reference numeral 14 denotes a drive shaft insertion hole, 15 denotes a rotating disk storage unit, 16 denotes a shutter, 17 denotes a lock member, and 18 denotes a plug.

[0022]

According to the first and second aspects of the present invention, a magneto-optical disk in which a lens cleaning brush is provided on one surface of a disk and a magnetic head cleaning sheet is adhered and provided on the other surface of the disk. In a cleaning disk for an apparatus, a brush-implanting hole is provided through the disk, and a brush is inserted into the brush-implanting hole from one surface of the disk toward the cleaning sheet surface and protrudes to the other, or Later, it is bent along the disk surface, and the brush end or the brush bent end is bonded and fixed by an adhesive portion, and the brush end or the brush bent end including the bonded portion projected and fixed to the cleaning sheet side is accommodated. A magnetic head cleaning sheet is provided by interposing a spacer having an opening capable of being interposed between the disk and the magnetic head cleaning sheet. Since the surface is configured as a flat surface, the cleaning handling operation is simplified, there is no signal reading error at the time of cleaning the magnetic head and the pickup lens, and the cleaning operation of the optical lens and the magnetic head can be performed uniformly and efficiently. It is extremely easy to clean and remove dust attached or deposited on each object,
High performance can be maintained, and a cleaning disk for a magneto-optical disk device having a cleaning effect and high reliability can be provided.

According to a third aspect of the present invention, the brush bent end is bent in the circumferential direction of the disk from the brush installation hole of the disk along the disk surface, and is formed on the spacer. The circumferential direction of the disk is accommodated in the opening that is longer than the radial direction, so that the width of the magnetic head cleaning sheet in the radial direction of the disk can be reduced, and the optimum amount of adhesive can be easily applied. The workability can be greatly improved, the brush pulling force can be increased, the adhesive strength can be improved, the environmental preservation including temperature characteristics can be improved, and the durability can be improved, and the cleaning effect is highly reliable. The cleaning effect can be demonstrated, there is little brush settling, there is no signal reading error when cleaning the magnetic head and pickup lens, and the adhesive part Since it is fitted and fixed in the opening of the spacer, there is no generation of debris from the adhesive or shavings, so that it is possible to provide a safe and reliable cleaning disk for a magneto-optical disk device having a cleaning effect. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view of a separated state showing an embodiment of the present invention.

2 (a) is a plan view of a spacer, and FIG. 2 (b) is an enlarged plan view of details before a magnetic head cleaning sheet is adhered to the cleaning disk used in the cartridge of FIG. (C) is an enlarged vertical sectional view taken along line AA.

FIGS. 3A and 3B show a part of a cleaning disk of another embodiment used in the cartridge of FIG. 1, wherein FIG. 3A is a plan view of a spacer, and FIG. 3B is a diagram before a magnetic head cleaning sheet is attached. FIG. 2C is an enlarged plan view of the detail, and FIG.

4A and 4B show a conventional cleaning disk, wherein FIG. 4A is a plan view thereof, and FIG. 4B is an enlarged vertical sectional view taken along line CC.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Disc 2 Lens cleaning brush 3 Magnetic head cleaning sheet 4 Brush implantation hole 5 Adhesion part 6 Opening part 7 Spacer 10 Upper case 11 Lower case 12 Center plate 13 Window hole part 14 Drive shaft insertion hole 15 Rotating disk storage part 16 Shutter 20 ₁ Brush end 20 Brush bent end

Claims (3)

[Claims] 1. A cleaning disk for a magneto-optical disk device having a disk cleaning brush provided on one surface of a disk and a magnetic head cleaning sheet attached to the other surface of the disk, wherein a brush is provided on the disk. A brush is inserted through the hole for brush implantation from one side of the disc toward the cleaning sheet surface and projected to the other side, and the brush end is adhesively fixed and protruded toward the cleaning sheet side. The magnetic head cleaning sheet has a flat surface by disposing a spacer having an opening capable of accommodating a brush end including a fixed adhesive portion between the disk and the magnetic head cleaning sheet. Cleaning disc. 2. A cleaning disk for a magneto-optical disk device comprising a lens cleaning brush provided on one surface of a disk and a magnetic head cleaning sheet attached to the other surface of the disk. A brush is inserted through the hole for brush installation from one side of the disk toward the cleaning sheet surface and bent along the disk surface, and the bent end of the brush is cleaned with the disk or magnetic head. A spacer having an opening capable of accommodating the bent end portion of the brush including the adhesive portion is interposed between the disk and the magnetic head cleaning sheet. A cleaning disk having a flat surface. 3. The brush bent end is bent in the circumferential direction of the disk from the brush installation hole of the disk along the disk surface, and the brush circumferential end formed on the spacer is in the circumferential direction of the disk. 3. The cleaning disk according to claim 2, wherein the cleaning disk is housed in an opening longer than the radial direction.