JP2005071502A - Optical recording/reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical recording/reproducing device provided with a cleaning device capable of preventing particulates floating inside a device housing from sticking to an optical recording disk or an objective lens. <P>SOLUTION: In the optical recording/reproducing device provided with a turntable 6, an optical head device 9, and a device housing 1 in which the turntable 6 and the optical head device 9 are stored, the device housing 1 is provided with an ion generator 11 generating ions 16 giving electric charge to paticulates 14 floating inside the device housing 1, and the cleaning device composed of the charged particulates 14 and a dust collecting electrode 4 charged to inverse polarity, inside the device housing 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an optical recording / reproducing apparatus that records information on an optical recording disk or reproduces information recorded on the optical recording disk. More specifically, the present invention relates to an optical recording / reproducing apparatus including a cleaning device that prevents fine particles floating inside the apparatus housing from adhering to an objective lens provided on an optical recording disk or an optical head.

  2. Description of the Related Art Conventionally, in an optical recording / reproducing apparatus for recording information on an optical recording disk such as a CD or a DVD or reproducing information recorded on the optical recording disk, fine particles are formed on an objective lens provided on the optical recording disk or the optical head device. When it adheres and becomes dirty, optical recording and reproduction performance deteriorates. Therefore, the optical recording disk or the objective lens is cleaned. For example, when fine particles adhere to the optical recording disk, the optical recording disk is cleaned by wiping with a soft cloth after taking out the optical recording disk from the optical recording / reproducing apparatus. Alternatively, if fine particles adhere to the objective lens and interfere with optical reading, wipe the fine particles adhering to the objective lens directly with a cotton swab, or use a disc that rotates a brush for removing fine particles. The objective lens is cleaned by using the formed cleaning disk or the like.

  In addition to the above methods, the objective lens is cleaned by using a photocatalyst (see, for example, Patent Document 1), using a vibration of an objective lens driving device (see, for example, Patent Document 2), or a fan. A device using an air flow is known (for example, see Patent Document 3). In addition to the above, a method using a photocatalyst is known as a method for cleaning an optical recording disk (see, for example, Patent Document 4).

JP 2002-74717 A JP 2002-15447 A Japanese Patent Laid-Open No. 9-282694 JP 11-195244 A

  However, the above-described cleaning method is to remove the dirt after the fine particles adhere to the optical recording disk or the objective lens, and the fine optical recording disk or objective lens floating inside the housing of the optical recording / reproducing apparatus. No method has been proposed to prevent adhesion to the skin itself.

  Therefore, an object of the present invention is to provide an optical recording / reproducing apparatus including a cleaning device that prevents fine particles floating inside the apparatus housing from adhering to an optical recording disk or an objective lens.

  In order to achieve the above object, an optical recording / reproducing apparatus according to the present invention includes a turntable for rotatably holding an optical recording disk, and at least information recording and information reproduction with respect to the optical recording disk. In an optical recording / reproducing apparatus comprising an optical head device that performs any one of the above and a device housing in which the turntable and the optical head device are housed, the fine particles are combined with fine particles floating inside the device housing. The apparatus housing is provided with a cleaning device comprising an ion generator that generates ions that give electric charge to the electrode and a dust collecting electrode plate that is charged with the opposite polarity to the charged fine particles.

  As described above, the optical recording / reproducing apparatus according to the present invention is charged with an ion generator that generates ions that combine with the fine particles floating inside the apparatus casing to give charges to the fine particles, and the charged fine particles are opposite in polarity. A cleaning device including a dust collecting electrode plate is provided inside the device casing. Therefore, the fine particles charged in combination with the ions generated from the ion generator are adsorbed to the dust collecting electrode plate charged to the opposite polarity due to the influence of the airflow generated by the rotation of the turntable and the electric attractive force. . Therefore, it is possible to prevent the fine particles floating inside the apparatus housing from adhering to the optical recording disk or the objective lens.

  In the optical recording / reproducing apparatus according to the present invention, it is preferable that the dust collecting electrode plate is configured to be removable from the apparatus housing. Thus, by making the dust collecting electrode plate removable from the apparatus housing, the dust collecting electrode plate can be cleaned outside the apparatus housing. Therefore, the dust collecting electrode plate can be easily cleaned, and the dust collecting electrode plate can be easily kept clean.

  As described above, the optical recording / reproducing apparatus according to the present invention includes the cleaning device including the ion generator and the dust collecting electrode plate inside the device housing. It is possible to prevent the fine particles floating inside from adhering to the optical recording / reproducing disk or the objective lens. Therefore, it is possible to prevent deterioration of optical recording and reproducing performance in the optical recording / reproducing apparatus.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings.

  FIG. 1 is a perspective view showing an optical recording / reproducing apparatus to which the present invention is applied. FIG. 2 is a schematic configuration diagram showing a schematic configuration inside the apparatus housing of the optical recording / reproducing apparatus shown in FIG.

  The optical recording / reproducing apparatus according to the present embodiment includes a turntable 6 that rotatably holds an optical recording disk 5 such as a CD or a DVD, an optical head device 9 that performs information recording or information reproduction on the optical recording disk 5, and a turn A device housing 1 in which a table 6 and an optical head device 9 are housed is provided. Inside the device housing 1, a cleaning device including an ion generator 11 and a dust collecting electrode plate 4 is provided.

  The apparatus housing 1 is formed in a substantially rectangular parallelepiped shape, and includes a disk insertion slot 2 through which the optical recording disk 5 is inserted into the apparatus and the optical recording disk 5 inserted into the apparatus is discharged to the outside of the apparatus. ing. Further, on the front surface of the apparatus housing 1, there are arranged operation buttons 3 for controlling operations such as ejection of the optical recording disk 5, start of information recording / information reproduction, and stop.

  The turntable 6 is configured, for example, as a part of a rotation side member of a spindle motor fixed to the apparatus housing 1 by fixing means such as a screw, and is provided with a chucking mechanism that holds the optical recording disk 5. .

  The optical head device 9 includes an optical system including a laser diode as a light source and an objective lens 10 that converges light emitted from the laser diode on the information surface of the optical recording disk 5, and the objective lens 10 in the tracking direction and the focusing direction. And an objective lens driving device for driving. The optical head device 9 is configured to be slidable in the radial direction (tracking direction) of the optical recording disk 5 along a guide shaft 7 fixed to the device housing 1 by a guide shaft fixing piece 8.

  Since the configuration of the ion generator 11 is a known configuration, a detailed description of the configuration is omitted. The ion generator 11 is connected to a DC high-voltage power supply 12 as a power supply (not shown), and a discharge electrode plate 13 connected to the negative electrode side of the DC high-voltage power supply 12 is arranged inside the ion generator 11. (See FIG. 3). Further, the ion generator 11 is fixed to the apparatus housing 1 by using a fixing means such as a screw, and is arranged in the vicinity of the corner on the rear surface side of the apparatus housing 1. The DC high-voltage power supply 12 is also fixed to the apparatus housing 1 by fixing means such as screws.

  The dust collecting electrode plate 4 is formed from a conductive metal plate, for example, a copper plate. The dust collecting electrode plate 4 is formed so as to increase its surface roughness in order to improve dust collecting properties. In addition, in order to improve the dust collecting property of the dust collecting electrode plate 4, the surface roughness may be increased, and a net-like material may be attached to the surface of the dust collecting electrode plate 4 so that the surface has a double structure.

Further, the dust collecting electrode plate 4 is attached to the apparatus housing 1 through sliding means composed of rollers, rails, etc. (not shown), and from the front side of the apparatus housing 1 using the sliding means. It can be pulled out. The dust collecting electrode plate 4 is disposed substantially diagonally in the apparatus housing 1 with the above-described ion generator 11. The dust collecting electrode plate 4 pulled out from the apparatus housing 1 using the sliding means is further configured to be removable from the sliding means, and the dust collecting electrode plate 4 can be cleaned in a state where it is taken out from the sliding means. Done. The dust collecting electrode plate 4 is connected to the positive electrode side of the DC high-voltage power supply 12 (see FIG. 3), and is configured to be charged with a polarity opposite to that of the ions 16 generated from the ion generator 11. Yes.

  In the optical recording / reproducing apparatus according to the present embodiment configured as described above, the principle that the fine particles 14 floating inside the apparatus housing 1 are adsorbed to the dust collecting electrode plate 4 will be described with reference to FIG. When the DC high-voltage power supply 12 is energized, negatively charged ions 16 are released from the ion generator 11. The released ions 16 are combined with the fine particles 14 floating inside the apparatus housing 1 to give a negative charge to the fine particles 14. On the other hand, when the DC high-voltage power supply 12 is energized, the dust collecting electrode plate 4 is positively charged. Here, since the optical recording disk 5 is rotated counterclockwise in FIG. 2 by the turntable 6, airflow is generated in the counterclockwise direction inside the apparatus housing 1. The fine particles 14 are adsorbed to the dust collecting electrode plate 4 due to the influence of the air flow and the electric attractive force between the negatively charged fine particles 14 and the positively charged dust collecting electrode plate 4.

  The fine particles 14 adsorbed on the dust collecting electrode plate 4 are taken out from the apparatus housing 1 together with the dust collecting electrode plate 4 as adsorbed fine particles 15. The dust collecting electrode plate 4 is cleaned in a state where it is taken out from the apparatus housing 1, and the adsorbed fine particles 15 are removed.

  As described above, the optical recording / reproducing apparatus according to the present embodiment is positively charged with the ion generator 11 that generates the ions 16 that give negative charges in combination with the fine particles 14 that float inside the apparatus housing 1. A cleaning device including a dust collecting electrode plate 4 is provided in the apparatus housing 1. Accordingly, the fine particles 14 that are negatively charged in combination with the ions 16 generated from the ion generator 11 are caused by the influence of the air current generated by the rotation of the optical recording disk 5 accompanying the rotation of the turntable 6 and the electric attractive force. The dust collecting electrode plate 4 is positively charged. Therefore, it is possible to prevent the fine particles 14 floating inside the apparatus housing 1 from adhering to the optical recording disk 5 or the objective lens 10.

  Further, in the present embodiment, the dust collecting electrode plate 4 can be detached from the apparatus housing 1 through the sliding means. Therefore, the dust collecting electrode plate 4 can be removed from the apparatus housing 1 and cleaned. Therefore, the dust collection electrode plate 4 can be easily cleaned, and the dust collection electrode plate 4 can be easily kept clean.

  The above-described embodiment is an example of a preferred embodiment to which the present invention is applied. However, the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the above embodiment, negative ions are generated from the ion generator 11 and the dust collecting electrode plate 4 is positively charged. However, positive ions are generated from the ion generator 11 and the dust collecting electrode plate 4 is negative. May be charged.

  In the above-described embodiment, the ion generator 11 and the dust collecting electrode plate 4 are connected to the same DC high-voltage power supply 12, but the polarity of ions generated from the ion generator 11 and the dust collecting electrode plate 4 are charged. It may be connected to separate DC high voltage power supplies so that the polarity to be reversed is the opposite polarity.

It is a perspective view which shows the optical recording / reproducing apparatus to which this invention is applied. It is a schematic block diagram which shows schematic structure inside the apparatus housing | casing of the optical recording / reproducing apparatus shown by FIG. FIG. 2 is a principle explanatory view showing a principle that fine particles floating inside the apparatus housing in the optical recording / reproducing apparatus shown in FIG. 1 are adsorbed by a dust collecting electrode plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus housing 4 Dust collection electrode plate 5 Optical recording disk 6 Turntable 9 Optical head apparatus 10 Objective lens 11 Ion generator 14 Fine particle 16 Ion

Claims (2)

A turntable that rotatably holds an optical recording disk, an optical head device that performs at least one of information recording and information reproduction on the optical recording disk, and an apparatus housing that houses the turntable and the optical head device In an optical recording / reproducing apparatus comprising a body,
A cleaning device comprising: an ion generator that generates ions that give electric charge to the fine particles floating inside the device housing; and a dust collecting electrode plate that is charged with a polarity opposite to that of the charged fine particles. An optical recording / reproducing apparatus provided in the apparatus casing. 2. The optical recording / reproducing apparatus according to claim 1, wherein the dust collecting electrode plate is configured to be removable from the apparatus housing.

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