JPH05298856A - Disk case - Google Patents

Abstract

PURPOSE:To remove a sticking dust with a simple mechanism by fixing a cleaning material to an opening/closing shutter and moving it in contact with a disk surface when the shutter aperture is open. CONSTITUTION:When the disk case housing an optical disk 3 is loaded on a device, the shutter 1 is moved in the direction X1 and opened. Then, the cleaning material 5 fixed on the inside of shutter 1 is moved while being in contact with the surface of optical disk 3 to wipe up the dust sticking to the surface. Since the position of the optical disk 3 in the case is not fixed to the rotating direction at the time of ejection from the device, the shutter 1 is repeatedly opened/closed to clean over the wide area. When the optical disk is rotating, the cleaning material 5 is housed in a cleaning material storage part 6 provided at the end of a head window 7 on the case 2 and is not in contact with the optical disk 3. The optical disk 3 is thereby self-cleaned, and the sticking dust is removed with the simple mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in an optical disk device for recording and / or reproducing information by irradiating a disk-shaped recording medium (hereinafter referred to as an optical disk) with a light beam through an objective lens. The present invention relates to a disc case containing an optical disc, and more particularly to a disc case for removing dust adhering to the surface of the optical disc.

[0002]

2. Description of the Related Art Normally, an optical disk in an optical disk device is exposed, and the surface of the disk has a mechanism that is easily susceptible to dust contamination. Errors can be induced by dust when servo control is performed when very fine and powdery dust accumulates on the optical disc surface and reduces the effective output of the laser, and when fibrous and granular dust adheres to the optical disc surface. A typical example is the case where the laser output is greatly disturbed and the laser output is locally reduced abnormally. Especially in the latter case, it is difficult to prevent an error in advance because an error occurs suddenly. In any case, since the optical disk device is generally used indoors, dust of various sizes adheres to the surface of the optical disk within a few months depending on the environment in which it is used. Depending on the size of the attached matter, the progress of the light beam is impeded, the effective output is abnormally reduced, and an error occurs during recording and reproduction. For this reason, it is now necessary to regularly clean the optical disc, and a cleaning-dedicated device for wiping dust off the surface of the optical disc with a cleaning pad when the optical disc is inserted is prepared and is widely used in general.

[0003]

In the above method, since the frequency of cleaning is left to the user, some users do not perform cleaning, and the effect may not be obtained. The present invention intends that the cleaning mechanism always works when the optical disc is loaded into the optical disc device and used, and further, it is an object of the present invention to remove dust adhering to the optical disc surface by a simple mechanism.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The above-mentioned problem is "having a disc for irradiating a light beam to record and / or reproduce information, and having an opening / closing shutter for irradiating the disc with the light beam. In the disk case, a cleaning material that contacts the disk surface is fixed to the inner surface of the opening / closing shutter, the cleaning material contacts and moves on the disk surface when the shutter opens, and the cleaning material contacts the disk surface at the end of the opening. A disk case characterized by being configured to break the contact. " That is, the present invention utilizes the movement of the opening / closing shutter of the disc case that accommodates the optical disc as the dust wiping action of the cleaning material in order to remove the dust adhering to the optical disc.

[0005]

When the disc case containing the optical disc is loaded, the optical disc device irradiates a light beam using the objective lens to record and / or reproduce information. Therefore, when the disc case is loaded in the optical disc device, the shutter of the disc case is opened to expose the surface of the optical disc. At this time, by interlocking with the shutter operation, the cleaning material fixed to the inner surface of the shutter wipes off the surface of the optical disc, so that large fibrous and granular dust adhering to the surface of the optical disc can be removed. That is,
When an optical disc is used, the cleaning mechanism always works automatically. Moreover, in the present invention, the cleaning material is configured so as to separate from the surface of the disc when the optical disc rotates, so that the rotation of the optical disc is not adversely affected.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a disc case accommodating a general optical disc. FIG. 2 shows the structure of the shutter portion of the disk case of the present embodiment (a) is a plan view thereof,
(B) And (c) is a side view and a bottom view of (a), respectively. FIG. 3 is a perspective view of the disk case of the present embodiment, and FIGS. 4A and 4B are vertical sectional views showing the cleaning mechanism of the present embodiment. A general disk case mechanism will be described with reference to FIG. The optical disc 3 is housed in the case 2, and the shutter 1 is closed to protect it from dust when it is not used. However, when the disc case is loaded into the device, the shutter 1 opens in the direction of the arrow X ₁ , a part of the surface of the optical disc 3 is exposed, and the actual recording / reproducing process becomes possible. 2 shows the inside of the shutter 1 that protects the optical disc 3 from dust,
This is an example in which a cleaning material 5 made of a fabric made of long fibers that is hard to produce lint is provided. As the cleaning material, a cloth made of ultrafine fibers, which is generally known as a wiping cloth, is suitable, but it is not necessarily limited to this kind of cloth, and even a cloth made of ordinary fibers, or the same function can be achieved. The material may be.

The cleaning mechanism for the surface of the optical disk will be described with reference to FIGS. 3 and 4. When the disc case containing the optical disc 3 is loaded into the optical disc device, the shutter 1 moves in the direction X _{1 in} FIG. 3 and is opened (FIG. 4A).
When the shutter 1 moves in the direction of the arrow), the cleaning material 5 fixed inside the shutter moves while touching the surface of the optical disc 3. Therefore, if fibrous or granular dust adheres to the surface of the optical disc 3, it will be wiped off by the cleaning material 5. The range that can be wiped off with one shutter opening and closing is only a part of the optical disc, but the position of the optical disc in the case when ejected from the device is not constant with respect to the rotation direction, so it can be opened and closed several times. A wide range can be cleaned. While the optical disk is rotating in the apparatus, the cleaning material is stored in the cleaning material storage section 6 provided at the end of the head window 7 (FIG. 3) of the case (see FIG. 4B), and There is no contact. Also,
At the time of cleaning when the shutter is opened and closed, the pressure applied to the disk surface is only the elasticity of the cloth, and even if the adhered material is hard, there is no risk of scratching the disk surface.

[0008]

As described above, according to the present invention, the optical disc is self-cleaned when it is used, and the dust adhering to the surface of the optical disc can be removed by a simple method. Is. As a result, the frequency of cleaning the optical disc can be significantly reduced, and furthermore, the sudden data error due to the adhered matter on the surface of the optical disc can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a general disc case accommodating an optical disc.

2A and 2B show a structure of a shutter portion according to an embodiment of a disk case of the present invention, FIG. 2A is a plan view thereof, FIG. 2B is a side view of FIG. 2A, and FIG. 2C is a bottom view of FIG. ..

FIG. 3 is a perspective view showing a cleaning mechanism according to an embodiment of the disc case of the present invention.

FIG. 4 is a vertical sectional view showing a cleaning mechanism according to an embodiment of the disc case of the present invention.

[Explanation of symbols]

1 Shutter 2 Case 3 Optical Disc 4 Hub 5 Cleaning Material 6 Cleaning Material Storage 7 Head Window X ₁ Shutter Opening Direction X ₂ Shutter Closing Direction

Claims (1)

[Claims] 1. A disc case having a disc for irradiating a light beam to record and / or reproduce information and having an opening / closing shutter for irradiating the disc with the light beam. On the side, a cleaning material that contacts the disk surface is fixed, the cleaning material contacts and moves on the disk surface when the shutter is opened, and the cleaning material interrupts the contact with the disk surface at the end point of the opening. Characteristic disk case.