JPS6252785A - Optical recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the soil of a disc and an optical head by arranging a filter in the flow of air generated by the rotation of the disc. CONSTITUTION:A circular plate shaped filter 6 larger than the outer shape of a driving motor 3 is fixed and arranged at a position where it is not in contact with a turntable 4, the shaft of the driving motor 3 and a disc 1 setting the shift of the motor 3 as its center keeping a space of more than 0.5mm at the motor 3 side of the disc 1. The rotation of the disc 1 by the motor 3 causes the flow of air in arrow head 11 direction. Since the filter 6 is arranged in the flow of air, dust included in the air can be eliminated by the filter 6. Thereby, the soil of the disc 1 and an optical head 2 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical recording/reproducing device, and particularly to a filter for removing dust.

[Conventional technology]

Conventionally, this type of optical recording/reproducing device uses a disc-shaped recording medium (
It was difficult to create a hermetically sealed structure that would allow the disk (hereinafter referred to as a disk) to be easily replaced.

[Problem that the invention seeks to solve]

Therefore, there is a drawback that dust enters and easily stains the disk and the optical head.

The present invention provides an optical recording/reproducing device in which a disk and an optical head are prevented from becoming dirty.

[Means for solving problems]

The present invention is an optical recording/reproducing device characterized in that a plate-shaped filter, which is larger than the rotation drive unit and smaller than the outer diameter of the disk, is disposed in parallel with the disk near the center of rotation on at least one side of the disk. .

〔Example〕

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

In FIG. 1, a disk 1 is placed on a turntable 4, fixed to the turntable 4 with a clamp angle of 5°, and rotated, and an optical head 2 performs recording and reproduction.

In the present invention, a disk-shaped filter 6 larger than the outer diameter of the drive motor 3 is placed on the drive motor 3 side of the disk 1 at a position that does not contact the turntable 4, the shaft of the drive motor 3, and the disk 1, and the center of the shirt track of the drive motor 3. The disk 1 is fixedly arranged parallel to the disk 1 with a distance of at least 0.5 mm.

When the disk 1 is rotated by the drive motor 3, air flows in the direction of the arrow 11 shown in FIG. 2.The filter 6 shown in FIG. The included dust is removed by the filter 6. Since dust can be removed from the air flowing near the disk 1 and optical head 2, contamination of the disk 1 and optical head 2 can be reduced.

〔Effect of the invention〕

As described above, the present invention has the effect of reducing contamination of the disk and optical head by disposing a filter in the air flow generated by the rotation of the disk.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing an embodiment of the present invention, and FIG. 2 is a side view showing the air flow of the present invention. 1...Disc (disk-shaped recording medium) 2...Optical head 3...Drive motor 4...Turntable 5...Clamp 6.Paffilter patent applicant NEC Co., Ltd. Agent Patent attorney Naka Kanno・,”””：
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Claims (1)

[Claims] (1) In an optical recording and reproducing device that optically records or reproduces information on a disc-shaped recording medium that is rotationally driven, near the center of rotation on at least one surface side of the recording medium,
1. An optical recording and reproducing device, characterized in that a plate-shaped filter, which is larger than the rotational drive unit and smaller than the outer diameter of the recording medium, is disposed in parallel with the recording medium.