JPH0823988B2 - Optical disk media cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cleaning device for an information recording medium used in an information recording / reproducing apparatus, and more particularly to optically writing and reading information on a disc-shaped information recording medium. The present invention relates to an optical disk medium cleaning device.

[Conventional technology]

Conventionally, in an optical disc device, an optical disc medium used for recording / reproducing information is made of resin or glass, and is used by inserting the cartridge into the optical disc device in a state of being inserted in the cartridge. The optical disk device does not have a closed structure like a hard disk device that shields the information recording medium from the outside air, but has an open structure that allows direct contact with the outside air. Therefore, floating dust enters the inside of the device. However, the optical disk medium is rotating at a high speed. Therefore, static electricity is generated on the optical disk medium due to friction with air, and the floating dust adheres to the surface of the optical disk medium. On the other hand, the optical disc device generally does not have a dust removing mechanism for the optical disc medium, and even if a dust countermeasure is taken, it has a simple dust removing brush. .

In addition, in the conventional disc cleaning device having a function of removing dust adhering to the surface of the optical disc medium, in addition to the dust removing brush mechanism built in the optical disc device as described above, contact with the surface of the optical disc medium is also made. The dust removing brush or dust removing cloth used was a fixed type.

[Problems to be Solved by the Invention]

As described above, the conventional optical disk device has a structure that is open to the outside air, and in particular, since no dust removing mechanism is provided on the surface of the optical disk medium, floating dust in the atmosphere on the surface of the optical disk medium, Foreign matter adheres and is buried,
There was a drawback that errors occurred when recording and reproducing information.

Further, as a means for solving the above-mentioned drawbacks, a dust removing brush mechanism is built in the optical disc device, the brush is brought into contact with the surface of the optical disc medium, and the optical disc medium and the brush are slid by rotation of the optical disc. There is a means for moving to remove dust on the surface of the optical disc, but with this structure, due to uneven planting of the bristles of the dust removing brush, there is a concentric portion of the dust remaining unswept on the surface of the optical disc medium. In particular, there is a drawback that it is difficult to remove the fine dust adhered to the surface of the optical disc medium.

Further, in order to remove the above-mentioned fine dust, the optical disc medium is housed in the cartridge in a dust removing mechanism having a cloth or the like in addition to the dust removing brush, and the dust removing mechanism is the head of the cartridge. Since the optical disc medium can be contacted only through the access window, the dust removing cloth of the dust removing mechanism must be smaller than the width of the head access window. For this reason, it is difficult to clean every corner of the surface of the optical disk medium, and there is a drawback that partial wiping remains. Further, in order to compensate for this drawback, when a dust cloth that is slightly smaller than the width of the head access window and is in contact with the entire optical disk medium from the inner circumference to the outer circumference is used, the dust cloth and the optical disk medium are There is a drawback that the contact resistance is large and a motor having a large torque is required to rotate the optical disk medium.

[Means for solving the problem]

An optical disk medium cleaner according to the present invention supports a disk-shaped optical disk medium at a central portion thereof and rotates a spindle in a plane parallel to a plane including an information recording surface of the optical disk medium, and a cleaning contacting the rotating optical disk medium. A pad, a cleaning pad rotation mechanism that rotates the cleaning pad on a rotation axis that is parallel to the rotation axis of the spindle that rotates the optical disc medium, and a slide mechanism that slides the rotating cleaning pad in the radial direction of the optical disc medium. have.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, the optical disk medium 2 is housed in the cartridge 1. A disk attracting magnet 7 in which an attracting metal 4 supported by a hub 3 bonded to the center thereof is bonded to a turntable 6 of a spindle.
The center hole of the suction metal 4 is fitted to the spindle center shaft 5, mounted on the spindle turntable 6, and rotated by a spindle motor 9 in a plane parallel to the information recording surface.

Cleaning pad 10 is a cleaning pad holder
The cleaning pad holder 11 is held by 11, and the cleaning pad holder 11 has a rotation axis parallel to the rotation axis of the optical disk medium 2, that is, the spindle rotation axis 8.
The cleaning pad 10 is rotated by a cleaning pad rotation motor 13 which is supported by the cleaning pad rotation shaft.

Here, as shown in FIG. 5, the cleaning pad 10 includes a sponge 10 (b) and a wiping cloth 10 (a).
Is adhered with a double-sided adhesive tape or the like, and when the optical disc medium 2 is mounted on the spindle, the wiping cloth 10 (a) and the surface of the optical disc medium 2 are sponge 10 (b). Contact with an appropriate pressing pressure by the spindle motor 9, and as described above, the spindle motor 9 rotates the optical disk medium and the cleaning pad 10 at the same time. Therefore, by sliding the cleaning pad 10 and the optical disk medium surface, The dust on the surface of the optical disk medium can be wiped off.

However, the cleaning pad 10 is inserted from the head access window 16 of the cartridge 1 and the optical disk medium 2 is inserted.
Since the diameter of the cleaning pad is smaller than the width of the head access window, if the position of the cleaning pad is fixed in the radial direction of the optical disc medium 2, the outer peripheral portion or the inner portion of the optical disc medium 2 is Wiping remains on the circumference. Therefore, in the present invention, the cleaning pad rotation motor 13 is fixed to the cleaning pad slide mechanism 15 via the cleaning pad rotation motor support portion 14. The cleaning pad slide mechanism 15
Since the cleaning pad rotation motor 13 reciprocates in the direction of arrow AB, that is, in the radial direction of the optical disk medium 2, the operation 8 is performed. Therefore, the cleaning pad 10 rotates and the cleaning pad 10 rotates.
Therefore, the wiping residue on the outer circumference or the inner circumference of the optical disk medium 2 as described above can be eliminated.

Next, an embodiment of the cleaning pad slide mechanism will be described in detail with reference to FIGS. 3 and 4.

A guide roller 22 is fitted to each of two guide rails 21 supported by a guide rail supporting portion 20 so as to be parallel to the moving direction AB of the cleaning pad 10. The guide rollers are the guide rails. 21 slide over,
A slide plate 23 is bridged between the guide rollers so as to be perpendicular to the guide rail 21. A slide plate drive disc 19 supported by a rotary shaft 25 between the two guide rails 21 is attached to the spindle rotary shaft 8 so as to share a central axis with the spindle rotary shaft 8. A rotary belt 18 hung between a fixed pulley 17 and a recess provided on the side surface of the slide plate drive disc causes a rotary shaft parallel to the spindle rotary shaft 8 to rotate due to rotation of the spindle rotary shaft 8. Rotate. Further, a slide plate drive shaft 24 is installed on the slide plate 23 so as to have a central axis parallel to the cleaning pad rotation shaft 12 on the surface of the slide plate drive disc 19 facing the slide plate 23. Since it is loosely fitted in the long hole in the direction perpendicular to the guide rail 21,
By the rotation of the slide plate drive disc 19, the slide plate drive shaft rotates on a concentric circle of the slide plate drive disc, and the slide plate 23 bridged by the guide roller sliding on the guide rail 21 is , And reciprocates in the direction of arrow AB. Therefore, by fixing the cleaning pad rotation motor 13 to the slide plate 23 via the cleaning pad rotation motor support portion 14, the cleaning pad 10 can be reciprocated in the radial direction of the optical disk medium 2.

Although the cleaning pad slide mechanism as described above is used in the present embodiment, a crank is used as a mechanism for reciprocating a cleaning brush, cloth, etc. for removing dust on the surface of the optical disc medium 2 in a substantially radial direction of the optical disc medium. The use of a mechanism or a belt system is included in the slide mechanism of the present invention. In addition, in the present embodiment, since the wiping cloth used in a clean room or the like is used as the wiping cloth (a), the wiping cloth has a countermeasure to prevent dust such as a piece of fiber from being emitted. It goes without saying that the wiping cloth may not be limited to the clean room wiping cloth as long as it is a soft cloth or the like that does not scratch the surface of the optical disc medium 1.

〔The invention's effect〕

As described above, by using the optical disc medium cleaner of the present invention, fine dust in the air adhering to the surface of the optical disc medium which adversely affects the servo system and the recording / reproducing system of the optical disc device, and the foreign matter are completely removed. Therefore, it is possible to obtain a stable servo signal and reduce the data error at the time of recording and reproducing.

[Brief description of drawings]

FIG. 1 is a perspective plan view showing an embodiment of the present invention, FIG. 2 is a partial side sectional view of FIG. 1, FIG. 3 is a plan view of a cleaning pad slide mechanism, and FIG. FIG. 5 is a vertical sectional view of the cleaning pad portion. 1 ... Cartridge, 2 ... Optical disc medium, 3 ... Hub, 4 ... Adsorption metal, 5 ... Spindle central axis, 6 ...
… Spindle turntable, 7 …… Disk attraction magnet, 8 …… Spindle rotary shaft, 9 …… Spindle motor, 10 …… Cleaning pad, 11 …… Cleaning pad holder, 12 …… Cleaning pad rotary shaft, 13…
… Cleaning pad rotation motor, 14 …… Cleaning pad rotation motor support, 15 …… Cleaning pad slide mechanism, 16 …… Head access window, 17 …… Pulley,
18 …… Rotary belt, 19 …… Slide plate drive disk,
20 …… Guide rail support, 21 …… Guide rail, 22…
… Guide rollers, 23 …… Slide plate, 24 …… Slide plate drive shaft, 25 …… Rotary shaft.

Claims (2)

[Claims] 1. A center of a removable disk-shaped optical disk medium, which is stored in a cartridge having an optical head access window for recording and reproducing information from an information recording surface,
An optical disk medium rotating means for rotating the optical disk medium in a plane parallel to the plane including the information recording surface of the optical disk medium, a cleaning pad slidingly contacting the surface of the rotating optical disk medium, and a rotation axis parallel to the rotation axis of the optical disk medium. In the state where the cleaning pad rotating mechanism for rotating the cleaning pad and the cleaning pad rotated by the cleaning pad rotating mechanism are brought into sliding contact with the surface of the rotating optical disk medium, the optical disk medium rotating means is used as a driving force. An optical disk medium cleaner having a cleaning pad slide mechanism that reciprocates in the radial direction of the optical disk medium, wherein the cleaning pad slide mechanism is parallel to the radial direction of the optical disk medium and is located in the optical head access window. On the center axis of the access window passing through and near the midpoint of the radius of the information recording area of the optical disc medium, the first optical axis has a rotation axis parallel to the rotation axis of the optical disc medium, and is attached to the rotation axis of the optical disc medium. The rotation is transmitted by a belt stretched between the pulley and the slide plate drive disk that rotates, and the slide plate drive disk is provided on both outer sides of the outer shape of the slide plate drive disk in parallel to the central axis of the access window. At least 2
A slide plate bridging slidably between the guide rails of the book and the guide rail, the slide plate projecting on the slide plate drive disc at a position eccentric from the slide plate drive disc rotation axis. An optical disk medium cleaner comprising the slide plate which is loosely fitted to a drive shaft and has an elongated hole having a length that does not hinder the revolution of the slide plate drive shaft. 2. The optical disk medium according to claim 1, wherein the sum of the revolution diameter of the slide plate drive shaft and the diameter of the cleaning pad is longer than the width of the information recording area of the optical disk medium. Cleaner.