JP2001126444A - Disk mounting structure for disk cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk mounting structure capable of reliably preventing polishing powder, etc., from entering a gap between layers of a DVD and effectively suppressing generation, etc., of a radial crack caused by the difference of temperatures between two layers in polishing even when a disk to be polished is the DVD of two-layered structure. SOLUTION: In this disk mounting structure 10 for a disk cleaner where a disk 1 to be polished is placed on a turn table 20 in the state of externally fitting its center hole 2 to a spindle 26 and polishing tools 5A and 5B comprising a buff, etc., are pressed to the surface to be polished 1A of the disk 1 and rotated to polish the surface 1A, an adapter 30 to be internally fitted to the hole 2 is inserted between the hole 2 and the spindle 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing method using a buff or the like on a surface to be polished of a disk such as an optical disk or a magneto-optical disk as an information recording medium, in order to remove scratches and stains on the surface of the disk. The present invention relates to a disk mounting structure of a disk cleaner in which the surface to be polished is polished by pressing and rotating a tool, and more particularly to a structure suitable for a case where a disk to be polished is a DVD having a two-layer structure.

[0002]

2. Description of the Related Art In recent years, as information recording media for audio / video or computers, laser discs and CDs have been used.
Discs such as (compact discs), CD-ROMs, and DVDs are generally widely used. However, if such discs are scratched or stained on the surface, especially on the recording surface, the appearance of the discs only deteriorates. In other words, the recorded information on the scratched or stained portion cannot be read and cannot be properly reproduced.

[0003] For this reason, in the past, a cloth or the like was used to manually remove the scratches and dirt on the disk. However, the manual operation requires time and effort, and the scratches and dirt are sufficiently removed. Cannot be removed. In particular, used C
D Where a large number of discs such as stores and libraries are held and frequently replaced or rented, a great deal of effort will be devoted to removing scratches and dirt on the discs.
It is strongly desired that the scratches and dirt on the disc can be removed mechanically and automatically instead of manually.

In order to meet such demands, for example, Japanese Patent Application Laid-Open No. Hei 7-122038 discloses that a disk-shaped polishing tool such as a buff is applied to a polished surface (recording surface) of a disk while rotating the disk. There has been proposed a disk cleaner in which the peripheral surface is pressed to rotate the polishing tool to polish the surface to be polished.

Further, the inventor of the present invention has previously described a technique disclosed in Japanese Patent Application Laid-Open No. 9-223383, in which a polishing tool such as a buff is pressed against a surface to be polished of a disk while rotating the disk. The present invention proposes a disk cleaner in which the polishing tool is rotated to polish the polishing surface by rotating the polishing tool, and the rotation axis of the polishing tool is arranged perpendicular to the surface to be polished during polishing. Further, as an improved type, as described in Japanese Patent Application No. 10-168047, a polishing tool such as a buff is pressed against the surface to be polished of a disk, and the polishing tool is rotated to polish the surface to be polished. When the disk is polished, the rotation axis of the polishing tool is arranged perpendicular to the surface to be polished, and the disk is rotated by the frictional force between the polishing tool and the surface to be polished. Provide a disk cleaner It is.

[0006]

However, in the above-described disk cleaner, when the disk to be polished is a DVD, the following problems have occurred. That is, as shown in FIG. 5, the DVD has two disk substrates (upper layer 6 and lower layer 7) each having half the thickness of a CD (about 0.6 mm) as shown in an enlarged view in FIG. A center hole 2 is formed in the center part, and the inner peripheral end is formed in an annular shape at the inner peripheral end so as to be opened in the center part. A gap S is formed. This interlayer gap S is inevitably formed in a DVD having a two-layer bonding structure.

However, such a DVD (disc) 1
As shown in FIG. 4, the center hole 2 of the spindle 2 is polished with the disk cleaner proposed above.
The DVD (disc) 1 is placed on a turntable 20 so as to fit over the 6 ', and a polishing tool (not shown) made of a buff or the like is attached to the polished surface 1A of the DVD (disc) 1. And pressing the polishing tool to rotate the polishing target surface 1
When A is polished, compounds, polishing powder, disc shavings, and the like generated during the polishing (hereinafter, referred to as polishing powder G, etc.)
Penetrates between the center hole 2 and the spindle 26 ′, enters the interlayer gap S, and is clogged. The abrasive powder G or the like that has entered the interlayer gap S is difficult to remove, stains the inner peripheral end (usually transparent) of the DVD (disc) 1, and deteriorates the quality.

Further, because of the two-layer bonding structure, during polishing, the temperature of the upper layer 6 on the side of the polished surface 1A is increased by frictional heat with a polishing tool, and the temperature of the upper layer 6 becomes higher than that of the lower layer 7. , A radial crack may occur at the inner peripheral end of the lower layer portion 7 (around the center hole 2). Further, the adhesive 8 for bonding may be heated and heated during polishing, and may seep out to the center hole 2 side through the interlayer gap S.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. It is an object of the present invention to provide a method in which even if a disc to be polished is a DVD having a two-layer structure, abrasive powder or the like is present in a gap between the layers. Provided is a disk mounting structure of a disk cleaner which can reliably prevent intrusion and can suppress generation of radial cracks due to a temperature difference between two layers during polishing as much as possible. It is in.

[0010]

In order to achieve the above-mentioned object, a disk mounting structure according to the present invention basically turns a disk to be polished such that a center hole of the disk is fitted to a spindle. Placed on a table, pressed against a polishing tool such as a buff against the surface to be polished of the disk, applied to a disk cleaner adapted to rotate the polishing tool to polish the surface to be polished, An adapter that is fitted into the center hole is interposed between the center hole and the spindle.

In this case, the disk has a double-layer DV.
In the case of D, the adapter is interposed between the center hole and the spindle so as to close an interlayer gap formed at an inner peripheral end of the disk. In a preferred aspect, with the adapter attached to the center hole,
The disc is placed on the turntable such that an inner peripheral portion of the adapter is fitted on the spindle.

The adapter is preferably made of an elastic material such as rubber. In a preferred embodiment, the adapter has a cylindrical portion which is pressed into contact with the center hole, and the adapter which projects radially from the cylindrical portion to cover the disk. An upper flange-shaped portion which is brought into close contact with an inner peripheral edge of the polishing surface; and an inner peripheral edge of a non-polishing surface of the disk which protrudes radially from the cylindrical portion and is opposite to the surface to be polished on the disk. And a lower flange-shaped portion that is brought into close contact with the lower flange.

In a preferred embodiment of the disk mounting structure according to the present invention having such a configuration, when the disk is a DVD having a two-layer structure, the DVD (disk) is inserted between a center hole and the spindle. The adapter is interposed so as to close the interlayer gap formed at the inner peripheral end.

Specifically, it is made of an elastic material such as rubber.
In a state where the adapter having the upper flange portion and the lower flange portion is mounted so as to be pushed into the center hole, the inner peripheral portion of the adapter is fitted to the spindle so that the DVD (disk) Is placed on a turntable, and a polishing tool such as a buff is pressed against the surface to be polished of the DVD (disc), and the polishing tool is rotated to polish the surface to be polished.

As described above, the adapter is interposed between the center hole and the spindle so as to close the interlayer gap formed at the inner peripheral end of the DVD (disc), so that polishing is performed. The disc to be played is a dual-layer D
Even in the case of VD, the intrusion of abrasive powder or the like into the interlayer gap can be reliably prevented, and heat conduction from the spindle to the DVD (disk) is also prevented by the adapter. The generation of radial cracks around the center hole (the inner peripheral edge of the disk) due to the temperature difference (expansion difference) between the layers can be suppressed as much as possible. However, problems such as oozing into the center hole through the interlayer gap can be suppressed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a disk mounting structure of a disk cleaner according to the present invention.
The disk mounting structure 10 of the illustrated embodiment is disclosed in Japanese Patent Application Laid-Open No. 9-223383 and Japanese Patent Application No. 10-168.
No. 047 and the disk cleaner described in the drawings, the disk 1 to be polished is placed on the substrate 21 so that the center hole 2 of the disk 1 fits over the spindle 26.
A polishing tool (roughing tool 5A, polishing tool 5B) is selectively pressed onto the polished surface 1A of the disk 1, and the polishing tool 5A 5B is rotated to obtain the polished surface 1
A is polished.

If the disc to be polished is a DVD (disc) 1 having a two-layer structure, an adapter 30 made of silicone rubber or the like is pushed into the center hole 2 as shown in FIG. With the grommet mounted, the inner peripheral portion 30a of the adapter 30 is
As shown in FIG. 2, the DVD (disc) 1 is placed on the turntable 20 so as to fit on the spindle 26.

Here, the adapter 30 includes a cylindrical portion 31 pressed into contact with the center hole 2 and a cylindrical portion 3.
An umbrella-shaped upper flange 32 protruding radially from the inner surface 1A of the polished surface 1A of the disk 1 and closely contacting the inner peripheral edge 1Ai of the disk 1; 1, an umbrella-shaped lower flange portion 33 having a smaller protrusion than the upper flange portion 32, which is brought into close contact with the inner peripheral edge 1Bi of the non-polishing surface 1B opposite to the polishing surface 1A; In the state of being mounted on the DVD (disk) 1, the interlayer gap S is closed by the tubular portion 31, and the upper flange 32 and the lower flange 33 form the inner space S. The peripheral edge portions 1Ai and 1Bi are sandwiched in close contact.

As described above, the adapter 30 is interposed between the center hole 2 and the spindle 26 so as to close the interlayer gap S formed at the inner peripheral end of the DVD (disk) 1. By doing so, even if the disc to be polished is a DVD (disc) 1 having a two-layer structure, it is possible to reliably prevent abrasive powder G or the like from entering the interlayer gap S. 2
6 also prevents heat conduction from the DVD (disk) 1 to the periphery of the center hole 2 (the inner peripheral edge of the disk) due to the temperature difference (expansion difference) between the two layers during polishing.
Can be suppressed as much as possible, and furthermore, problems such as the adhesive 8 for laminating oozing into the center hole 2 via the interlayer gap S can be suppressed.

The disk to be polished has a two-layer structure D
In the case of a normal CD or the like instead of the VD, another adapter may be attached to the spindle 26 in order to close the gap with the center hole when polishing the disk. As mentioned above, although one Embodiment of this invention was described in detail,
The present invention is not limited to the above embodiment, and various changes can be made in design without departing from the spirit of the invention described in the claims.

[0021]

As will be understood from the above description, according to the disk mounting structure of the present invention, even when the disk to be polished is a DVD having a two-layer structure, abrasive powder or the like enters the interlayer gap. Can be reliably prevented,
The generation of radial cracks due to the temperature difference between the two layers during polishing can be effectively suppressed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a disk mounting structure according to the present invention.

FIG. 2 is an enlarged sectional view showing the vicinity of the center of the disk of the disk mounting structure shown in FIG. 1;

FIG. 3 is an enlarged sectional view showing a DVD (disk) and an adapter used in the disk mounting structure shown in FIG. 1;

FIG. 4 is a sectional view showing an example of a conventional disk mounting structure.

FIG. 5 is a partially enlarged sectional view showing the structure of a DVD (disk).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc (DVD) 1A, 1B Polished surface 1Ai, 1Bi Inner peripheral edge 2 Center hole 5A Scratching tool 5B Polishing tool 20 Turntable 26 Spindle 30 Adapter 30a Inner peripheral part 31 Cylindrical part 32 Upper side Flange 33 Lower flange S Interlayer gap

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Fumihiko Aiyama 1-7-2 Suehirocho, Ome-shi, Tokyo F-term (reference) 3C058 AA06 AA18 AB04 AB09 AC05 CA01 CB02 CB06

Claims (6)

[Claims] 1. A disk (1) to be polished is placed on a turntable (20) such that a center hole (2) of the disk (1) fits over a spindle (26), and the disk (1) is polished. A polishing tool (5) made of buff or the like is applied to the polishing surface (1A).
A, 5B), and the polishing tool (5A, 5B) is rotated to polish the surface to be polished (1A). A disk mounting structure for a disk cleaner, wherein an adapter (30) is fitted between the center hole (2) and the spindle (26). 2. A DVD in which the disc (1) has a two-layer structure.
, The adapter (30) is disposed between the center hole (2) and the spindle (26) so as to close an interlayer gap (S) formed at an inner peripheral end of the disk (1). The disk mounting structure according to claim 1, wherein the disk mounting structure is interposed. 3. With the adapter (30) mounted in the center hole (2), the inner peripheral portion (30a) of the adapter (30) is fitted to the spindle (26) so as to fit the outer periphery. The disk mounting structure according to claim 1 or 2, wherein the disk (1) is mounted on the turntable (20). 4. The disc mounting structure according to claim 1, wherein said adapter (30) is made of an elastic material such as rubber. 5. The adapter (30) includes a tubular portion (31) pressed into contact with the center hole (2), and a radially projecting portion from the tubular portion (31). The upper flange-shaped part (32) closely adhered to the inner peripheral edge part (1Ai) of the surface to be polished (1A) is provided. Disk mounting structure. 6. The non-polished surface (1) of the disk (1) opposite to the polished surface (1A) protruding radially from the tubular portion (31).
The disk mounting structure according to claim 5, further comprising a lower flange (33) that is brought into close contact with the inner peripheral edge (1Bi) of (B).