JP3064603B2 - Optical disk cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaner for cleaning the inside of an optical disk apparatus for performing recording / reproduction using a laser beam.

In recent years, with the remarkable development of computers,
OA devices such as personal computers and word processors are also being introduced into general offices. However, unlike a computer room where environmental conditions are well-established, ordinary offices have an adverse effect on dust and tobacco smoke, especially on optical disc devices that have been said to be particularly resistant to dust. The effects can no longer be ignored. Under such circumstances, recently, there has been a high demand for realizing a cleaner for cleaning the inside of the optical disk device.

[0003]

2. Description of the Related Art Conventionally, an optical disk device is used in a place where environmental conditions are favorable, and no particular countermeasures against dust have been taken so far.

[0004]

Therefore, in order to use the optical disk device in an office or the like where dust is relatively large in the future, it is necessary to take appropriate measures against dust (especially cigarette smoke, etc.).

The present invention effectively solves this problem by providing an optical disk cleaner in which a dust collector is disposed in a cartridge case having the same size and shape as a cartridge of an optical disk medium. .

[0006]

As shown in FIGS. 2 and 3, an optical disk cleaner (hereinafter referred to as a cleaner) 20, 20A according to the present invention is mounted on a disk mounting portion 51 (see FIG. 1) of an optical disk device 50. Is configured to be removable
Cartridge case 10 having a container exposure window 8 and the cart
It incorporated in the ridge casing 10, and has a dust collection means
Configure a rotatable propeller unit 3 exposed from the dust collector exposing window 8.

[0007]

1 (a) and 1 (b) are schematic plan views partially illustrating the principle of operation of the cleaners 20 and 20A. As shown in FIG. 1 (a), the cleaners 20, 20A are mounted on a disk mounting portion 51 of the optical disk device 50 in the direction of arrow A and used.

When these cleaners 20, 20A are mounted in the disk mounting portion 51 as shown in FIG. 1B and the power of the optical disk device 50 is turned on, the propeller type dust collection built in the cartridge case 10 is performed. The devices 1 and 1A rotate to generate an air flow γ in the direction of arrow B in the optical disk device 50. Each of the dust collectors 1 and 1A is provided with dust collecting means on the surface thereof, and therefore adsorbs dust (not shown) contained in the air flow γ. Therefore, if this operation is executed as needed, the inside of the optical disk device 50 is automatically cleaned. In the figure, reference numeral 8 denotes a dust collector exposure window provided on the cartridge case 10 side, and an air flow γ generated by the rotation of the dust collectors 1 and 1A passes through the dust collector exposure window 8 to the inside of the apparatus. Circulate.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 (a), 2 (b) and 2 (c) are a schematic perspective view, a plan view, and a sectional view taken along line AA of an embodiment of the present invention.
(b) and (c) are a schematic perspective view, a plan view, and a cross-sectional view taken along the line BB showing a modification of the present invention, and the same parts as those in FIG. 1 are denoted by the same reference numerals. .

As shown in FIG. 2A, the cleaner 20 according to the present invention is configured so as to be insertable into and removable from a disk mounting portion 51 (see FIG. 1) of an optical disk device 50.
A cartridge case 10 having a window 8 and this cartridge
Built in the case 10 and having dust collecting means (described later)
The dust collector 1 includes a rotatable propeller unit 3 that is exposed from a dust collector exposure window 8. In the figure,
Reference numeral 11 denotes a label indicating that the cartridge 10 is a cleaner.

The dust collector 1 is, as shown in FIG.
It is a windmill-type member composed of a main body 5 and a propeller 3 provided around the main body. Cartridge case
The dust collector 1 that is driven to rotate about O as a rotation center by mounting the disk 10 on the disk mounting portion 51 of the optical disk device 50.
Is equipped with a propeller unit 3 formed with a certain lead angle θ with respect to the rotation direction P, as shown in FIG. When rotated, an air flow γ in a direction orthogonal to the rotation direction P is generated. In FIG. 2B, D indicates the outer diameter of the dust collector 1 and h indicates the height of the propeller unit 3. The outer diameter D of the dust collector 1 is equal to the outer diameter of a regular optical disk medium (not shown) mounted on the optical disk device 50. Since the height h of the propeller unit 3 and the lead angle θ are closely related to the airflow γ generated in the apparatus, they are determined at the design stage in consideration of the internal volume and shape of the optical disk apparatus 50.

The dust collector 1 has a surface resistance of 5 × 10 ¹⁵ Ω.
It is always charged with static electricity because it is made of polycarbonate resin of // or more. For this reason, when the dust collector 1 of the cleaner 20 starts rotating and an air flow γ is generated in the optical disk device 50, the dust blown out by the air flow γ is sucked by the charged dust collector 1 and the surface of the dust collector is charged. Adheres to

The cleaner 20 generates an air flow γ in the optical disk device 50 by rotation of the dust collector 1 housed in the cartridge case 10 having the same shape as the optical disk medium (not shown). The inside of the apparatus is cleaned by adsorbing the dust circulating in the apparatus and circulating in the apparatus to the dust collector 1, so that the inside of the apparatus can be cleaned extremely efficiently. When the amount of dust adhering to the dust collector 1 reaches the limit value, the dust collector 1 may be taken out of the cartridge case 10 to remove the dust.

Next, a modification of the present invention will be described with reference to FIGS. 3 (a), 3 (b) and 3 (c). The same parts as those in FIG. 2 are denoted by the same reference numerals. This cleaner 20
3A is equipped with a dust collector 1A in which an adhesive sheet 7 is adhered to the outer peripheral surface of the propeller unit 3 as shown in FIGS. 3 (a), 3 (b) and 3 (c). The basic shape of this dust collector 1A is
However, the dust collector 1A is characterized in that dust adheres to the adhesive sheet 7 attached to the propeller unit 3. The adhesive sheet 7 is a double-sided adhesive sheet in which a paper fiber or a cloth fiber is impregnated with a non-drying adhesive (non-drying adhesive). When this double-sided adhesive sheet is used, the operation of attaching the double-sided adhesive sheet to the propeller unit 3 is significantly facilitated. If dust exceeding a certain amount adheres to the adhesive sheet 7 by using the cleaner 20A for a long time, the dust collector 1A is taken out from the cartridge case 10 and the adhesive sheet 7 is replaced. .

Hereinafter, the mounting effect of the cleaner according to the present invention will be described with reference to experimental values based on FIGS. 4, 5 and 6. FIG. FIG. 4 is a schematic side sectional view showing the configuration of a dust tester that sends dust (in this case, using tobacco smoke instead of dust) into the optical disk device 50 to create a certain pollution environment in the device. FIG. 5 is a graph showing the number of repetitions of the dust test (the specific method will be described later) and the degree of change of the reflectance of each optical disk medium. FIG. 6 is the number of repetitions of the dust test and the degree of change of the error occurrence rate of each optical disk medium. FIG.

First, the configuration of a dust tester 80 and a dust test method using the same will be described with reference to FIG. As shown in FIG. 4, the dust tester 80 is divided into an upper stage and a lower stage, and a cigarette 60 and an ashtray 65 are arranged on a lower bottom plate 75.
An optical disk device 50, which is a test object, and two fans 40 for stirring air in a room where the device is placed are arranged on an upper side partitioned by a shelf board 76.

The dust tester 80 ignites the cigarette 60 disposed on the lower side and smokes the cigarette 60. The smoke 61 of the cigarette rising through the air hole 71 is stirred by the two fans 40. A predetermined test environment contaminated by the cigarette smoke 61 is formed in the optical disk device 50. A test method using the dust tester 80 is called a dust test.

Hereinafter, the procedure for performing the dust test will be specifically described. . The optical disk device 50 is housed in a dust tester 80 to perform a dust test. The procedure of this dust test is as described above, and the test time is one hour. The dust test is performed on the two optical disk devices 50 under the same conditions. . Two optical disk drives taken out of the dust tester 80
The cleaner 20 according to the present invention is mounted on one of the optical disks 50, and the optical disk device 50 is operated for 10 minutes. Since this test is to test the effect of the cleaner 20 by comparing the device whose interior has been cleaned with the cleaner 20 with the device which has not performed the cleaning, this process is not performed for the other device.
Hereinafter, the optical disk device 50 that has performed the cleaning process will be referred to as a No. A device 50A, and the other optical disk device 50 that has not performed the cleaning process will be referred to as a No. B device 50B. . A regular optical disk medium (not shown) is mounted on each of the No. A device 50A and the No. B device 50B, and these two devices are operated for 10 minutes. . The optical disk medium taken out from the A-unit 50A and the optical disk medium taken out from the B-unit 50B are respectively subjected to a reflectance tester to measure the reflectance. . After the measurement of the reflectivity is completed, each of these optical disc media is then tested by an error tester for an error occurrence rate. . Repeat the above test 10 times.

FIG. 5 is a graph showing the number of repetitions of the dust test and the degree of change in the reflectance of each optical disk medium corresponding to the number of dust tests, where α is the reflectance of the optical disk medium mounted on an apparatus that has not been subjected to the cleaner process. Is plotted, and β is a curve plotting the reflectance of the optical disk medium mounted on the apparatus that has performed the cleaner processing. FIG.
As is clear from the graph, when the cleaner treatment was performed (see curve β), there was almost no change in reflectance, but when the cleaner treatment was not performed (see curve α), the reflectance changed (decreased) significantly. ing.

FIG. 6 is a graph showing the number of repetitions of the dust test and the degree of change in the error occurrence rate of each optical disk medium corresponding to the number of repetitions of the dust test. This is the case where the processing is performed. As is clear from FIG. 6, the difference in the error occurrence rate between the case where the cleaning process is performed and the case where the cleaning process is not performed is remarkable. This is because dust in the optical disk device is reduced by performing the cleaning process.

The cleaners 20 and 20A according to the present invention have a structure in which the dust collectors 1 and 1A each provided with dust collecting means are arranged in a cartridge having the same shape as the optical disk medium. The inside of the optical disk device 50 can be efficiently cleaned.

[0022]

As described above, the cleaner according to the present invention is configured to automatically absorb dust in the apparatus by mounting the cleaner on the optical disk apparatus as in the case of the optical disk medium. Since it is simple and dust can be removed from the optical disk device very efficiently by using this, the reliability of the optical disk device can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a schematic plan view, partly in section, for explaining the operation principle of a cleaner according to the present invention.

FIG. 2 is a schematic perspective view, a plan view, and a cross-sectional view taken along line AA of an embodiment of the present invention.

FIG. 3 is a schematic perspective view, a plan view, and a cross-sectional view taken along line BB showing a modification of the present invention.

FIG. 4 is a schematic side sectional view showing a configuration of a dust tester.

FIG. 5 is a graph showing the number of repetitions of the dust test and the corresponding change in the reflectance of each optical disk medium.

FIG. 6 is a graph showing the number of repetitions of the dust test and the corresponding change in the error occurrence rate of each optical disk medium.

[Explanation of symbols]

 1, 1A dust collector 3 propeller unit 5 main unit 7 adhesive sheet 8 dust collector exposure window 10 cartridge case 11 label 20, 20A cleaner 40 fan 50 optical disk unit 51 disk mounting unit 60 cigarette 61 smoke 65 ashtray 71 air hole 76 Shelf board 80 Dust testing machine α Curve showing the state without cleaner treatment β Curve showing the state without cleaner treatment γ Air flow θ Lead angle

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 33/14

Claims (2)

(57) [Claims] 1. A cleaner for cleaning the inside of an optical disk device that performs recording and reproduction using a laser beam, the cleaner being configured to be insertable into and removable from a disk mounting portion of the optical disk device, and having a dust collector exposure window. A cartridge case , built in the cartridge case, having dust collecting means ;
Optical disc cleaner, characterized in that both of provided with a rotatable propenyloxy <br/> La part exposed from the dust collector exposing window. 2. The dust collecting means is attached to the propeller unit.
The optical disk cleaner according to claim 1 , wherein the adhesive sheet is a coated adhesive sheet.