JP2001202771A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk device which can surely prevent the occurrence of erroneous writing and erroneous reading out by the influence of dust, dirt, etc., sticking to a recording medium and head by surely blowing out the dust, dirt, etc., by blowing gas from two directions. SOLUTION: The dust, dirt, etc., sticking to the disk 11 and the pickup head 12 are blown by the air blown out of the blow-off ports of a first blow-off pipe 13 and second blow-off pipe 14 arranged to face each other with the pickup head 12 in-between. The first blow-off pipe 13 and the second blow-off pipe 14 are constituted to alternately blow off the air and therefore the simultaneous blowing off of the air from both directions to the disk 11 does not occur. Accordingly, the problem that the dust, dirt, etc., stuck thus far on the disk 11 surface remain without being blown off does not occur either.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device for recording and reading information on a disk-shaped recording medium, and more particularly to a disk device using an optical pickup head for recording and reading information.

[0002]

2. Description of the Related Art Hitherto, an optical disk device capable of recording information on an optical recording medium such as a CD or an MD and reading the recorded information has been put to practical use. by the way,
In an optical disk device, there is a concern that dust and dirt adhere to an optical recording medium and an optical pickup head, and erroneous writing and erroneous reading occur due to the adhesion. Therefore, it has been proposed to blow air onto the optical recording medium and the optical pickup head to blow off dust and dirt attached to the optical recording medium and the optical pickup head (Japanese Patent Laid-Open No. 8-129).
771, JP-A-2-66714).

[0003]

However, many users wipe the surface of a disc such as a CD with paper or cloth to remove dust and dirt attached to the surface. Usually, the disks are wiped radially. The surface of the disk may be damaged during the cleaning. For example, when cleaning the disc 20
May be scratched 21 as shown in FIG. FIG. 5A shows the surface of the disk, and FIG.
(B) shows a cross section of a damaged portion of the disk.

However, in the conventional disk device, the direction in which air is blown against the optical recording medium and the optical pickup head is fixed, so that the dust cannot be blown off if dust or dirt is fitted on the scratch 21. . For this reason, there is a problem that dust and dirt remain on the disk surface, and erroneous writing and erroneous reading are likely to occur. For example, FIG.
When the dust 22 is fitted on the scratch 21 as shown in FIG. 2, the dust 22 cannot be blown off even if air is blown from the direction A shown in FIG. In order to blow off the dust 22, air must be blown from the direction B shown in the figure.

[0005] Incidentally, even in the case of a disk such as a CD having a scratched surface, a general disk device corrects errors at the time of reading and writing. There is no particular problem.

An object of the present invention is to blow gas from two directions to reliably blow off dust and dirt attached to a recording medium and a head, and to prevent erroneous writing and erroneous reading due to the influence of dust and dirt. It is an object of the present invention to provide a disk device capable of substantially reliably preventing occurrence.

[0007]

The disk device according to the present invention has the following arrangement to solve the above-mentioned problems.

(1) In a disk device provided with a head for performing at least one of recording information and reading recorded information on a disk-shaped recording medium, a blowing device for blowing gas to the recording medium and the head. Two outlet pipes having outlets are provided, and the outlets of the two outlet pipes are opposed to each other with the head interposed therebetween.

In the above arrangement, two blow-off pipes are provided for blowing off gas or the like from the blow-out ports to the recording medium and the head to blow off the dust and the like, and the blow-out pipes of these blow-out pipes are opposed to each other. Therefore, gas can be blown onto the recording medium from two directions. Therefore, dust, dust and the like adhering to the recording medium surface can be reliably blown off, so that erroneous writing and erroneous reading due to the influence of the dust, dust and the like adhering to the recording medium surface can be almost certainly prevented. .

[0010] The gas supplied to the blow-out pipe may be an airflow released from a spray can or an airflow generated by a fan.

(2) There is provided a distribution mechanism for distributing the gas to the two outlet pipes.

In this configuration, since the distribution mechanism for distributing the gas to the two blow-off pipes is provided, only one mechanism for generating the gas to be supplied to the blow-out pipes is required. it can.

(3) The distribution mechanism alternately supplies gas to the two outlet pipes.

In the above configuration, since the distribution mechanism alternately supplies gas to the two blow-off tubes, the gas is not simultaneously blown from the two opposite directions to the recording medium, and the gas adheres to the recording medium. It is possible to efficiently blow away dust and dirt.

(4) A slide mechanism for sliding the outlets of the two outlet pipes together with the head is provided.

In the above configuration, since the outlets of the two outlet pipes are slid together with the head, gas can be blown to the entire recording position or reproduction position of information on the recording medium, and the gas adheres to the recording medium. Dust and dirt can be blown off almost reliably.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a disk drive according to an embodiment of the present invention will be described. The disk device 1 of this embodiment is of a portable type as shown in FIG. As shown in FIG. 1, a nozzle 10a of a spray can 10 filled with compressed air is inserted into the injection port 2, and air is discharged from the spray can 10 to inject air into the main body. The distributor 3 shown in FIG. 2 is connected to the inlet 2. The air injected from the inlet 2 is sent to a first blowout pipe 13 or a second blowout pipe 14, which will be described later.

FIG. 3 is a diagram showing the configuration of the distributor. FIG.
3A is a cross-sectional top view of the distributor, and FIG. 3B is an external view of the distributor. The distributor 3 is a T-shaped tube as shown in FIG. 2, and a distribution rotor 5 is disposed at the center. The distribution rotor 5 is rotatably attached to the distributor 3. The distribution rotor 5 has a fan shape as shown in the figure, and air injected from the injection port 2 is blown into a cylindrical rotating shaft 5a. Further, the distribution rotor 5 has a rotating shaft 5
A flow path 6 (a portion indicated by a broken line in FIG. 3B) is formed from the inside of a to the outer peripheral surface. Therefore, the air injected into the rotating shaft 5 a passes through the flow path 6 and is discharged from the opening 6 a formed on the outer peripheral surface of the distribution rotor 5.

In the distributor 3, two openings 7 a and 8 are provided at positions where the distribution rotor 5 is disposed at opposing positions.
a is formed, and pipes 7, 8 are connected to the openings 7a, 8a, respectively. The pipe 7 connected to one opening 7a is connected to a first outlet pipe 13 described later, and the pipe 8 connected to the other opening 8a is connected to a second outlet pipe 14. The distribution rotor 5 has two openings 7a and 8 regardless of the rotation state.
a is completely closed. Therefore, the air injected into the rotation shaft 5a of the distribution rotor 5
A pipe 7 connected to one of the openings 7a, 8a,
8 and is sent to the first outlet pipe 13 or the second outlet pipe 14. That is, air is not simultaneously blown out from both the first blowout pipe 13 and the second blowout pipe 14.

Further, when air is discharged from the opening 6a formed on the outer peripheral surface of the distribution rotor 5,
A rotational force in the direction shown in FIG. That is,
By injecting air from the inlet 2 into the main body, the distribution rotor 5 can be rotated. And the distribution rotor 5
Is rotated, the air injected from the inlet 2 is alternately sent to the first outlet pipe 13 and the second outlet pipe 14.

FIG. 4 is a diagram showing recording / reproducing positions inside the main body, FIG. 4 (A) is a side view, and FIG. 4 (B) is a view in the direction of arrow A in FIG. 4 (A). . In FIG.
A recording medium 1 is rotated by a drive mechanism (not shown) in a direction indicated by an arrow in FIG. A pickup head 12 reads information from or records information on the disk 11. Reference numeral 13 denotes a first blowout pipe having an outlet for blowing air to the pickup head 12 and the disc 11, and 14 denotes a second blowout pipe having an outlet for blowing air to the pickup head 12 and the disc 11. is there. The outlets of the first outlet pipe 13 and the second outlet pipe 14 face each other as shown. The first blowing pipe 13 is connected to the pipe 7 connected to the opening 7a on one side of the distributor 3 by a rubber hose. The second blowing pipe 14 is connected to the pipe 8 connected to the opening 8a on the other side of the distributor 3 by a rubber hose.

Reference numeral 15 denotes a slide mechanism for adjusting the recording or reading position by sliding the pickup head 12 in the radial direction of the disk 11. The slide mechanism 15 includes a first blowing pipe 13 and a second blowing pipe. A tube 15 is attached. Therefore, the slide mechanism 15 includes the pickup head 12, the first blow-out pipe 13 and the second
Can be slid between the position shown by the solid line and the position shown by the broken line in FIG. Note that the slide mechanism 15 is not shown in FIG.

As described above, when the slide mechanism 15 slides the pickup head 12, the first blowout pipe 13 and the second blowout pipe 14 are also slid. The outlets of the first outlet pipe 13 and the second outlet pipe 14 can face each other.

Hereinafter, the operation of the disk drive of this embodiment will be described. The disk device 1 according to this embodiment includes:
In addition to a normal mode for recording and reproducing information on the disk 11, a cleaning mode for blowing off dust and dirt adhering to the disk 11 and the pickup head 12 is provided. The operation in the normal mode is the same as that of a known disk device, and the description is omitted here.

The user can select a cleaning mode by operating a predetermined switch (not shown) provided on the main body. When the cleaning mode is selected, the apparatus main body receives the disk 11 inserted inside the main body.
, And the slide mechanism 14 causes the pickup head 12, the first blow-out tube 13 and the second blow-out tube 14 to vibrate in the radial direction of the disk 11 (FIG. 4).
In (B), the slide is performed between the position indicated by the solid line and the position indicated by the broken line. ). The cycle of this vibration is several seconds.
When the user selects the cleaning mode, the user inserts the nozzle 10a of the spray can 10 into the inlet 2 as shown in FIG. 1, and presses the button of the spray can 10 to inject air into the apparatus body.

The air injected from the inlet 2 flows into the rotating shaft 5a of the distribution rotor 5 of the distributor 3, and is discharged from the opening 6a formed on the outer peripheral surface of the distribution rotor 5. As described above, when the distribution rotor 5 discharges air from the opening 6a formed on the outer peripheral surface, the distribution rotor 5 shown in FIG.
A rotation force in the direction shown in FIG. The distribution rotor 5 has two openings 7a and 8 regardless of the rotation state.
Since the size is such that at least one of “a” is completely closed, air is not simultaneously blown out from both the first blowout pipe 13 and the second blowout pipe 14.

If air is blown simultaneously from two opposing directions, dust or dirt adhering to the disk 11 will be pressed against the disk 11 and cannot be blown off. Therefore, dust or dust cannot be removed from the disk 11.

Further, with the rotation of the distribution rotor 5,
A blow-out pipe (No. 1) to which air injected from the inlet 2 is sent
Of the blowing pipe 13 or the second blowing pipe 14), and as a result, the direction in which air is blown to the disk 11 changes. Therefore, even if the surface of the disk 11 is scratched and dust or dirt is fitted on the scratch, the dust or dirt can be reliably blown off.

Further, since the outlets of the first outlet pipe 13 and the second outlet pipe 14 are vibrated in the radial direction of the disk 11 together with the pickup head 12, the first outlet pipe 13 and the second outlet pipe are connected to the pickup head 12. The air blown from the outlet of the second outlet pipe 14 can always be blown. Therefore, dust and dirt adhering to the surface of the pickup head 12 can be reliably blown off. In addition, since air can be blown over the entire recording surface of the disk 11, dust or the like adhering to the entire disk 11 can be blown off.

In the above embodiment, the invention of the present application is applied to a disk drive of a portable type, but the invention of the present application is also applicable to a stationary disk drive. In the case of a general stationary disk device, since a fan for circulating air is provided inside the main body, the air injected into the rotating shaft 5a of the distribution rotor 5, that is, the first blowing pipe 13 and the The air blown from the outlet of the second blowing pipe 14 may be generated by this fan.
In this way, the above-described cleaning (removal of dust and dirt adhering to the disk 11 and the pickup head 12) can be performed without using the spray can 10.

Further, the cleaning is performed on the disk 11
May be executed in the normal mode for recording or reproducing information (in particular, the cleaning mode need not be provided).

[0032]

As described above, according to the present invention, gas is blown from the outlet to the recording medium and the head from two directions, so that dust and dirt adhering to the surface of the recording medium can be removed. It can be reliably blown off, and erroneous writing and erroneous reading due to dust and dirt adhering to the disk surface can be almost certainly prevented.

Further, since the distribution mechanism for distributing the gas to the two outlet pipes is provided, it is possible to suppress an increase in the size of the apparatus main body.

Further, since the gas is alternately supplied to the two blow-off tubes, dust and dirt adhering to the recording medium can be efficiently blown off.

Further, since the outlets of the two outlet pipes are slid together with the head, it is possible to blow gas to the entire recording position or reproduction position of information on the recording medium to blow out dust and dirt almost certainly. it can.

[Brief description of the drawings]

FIG. 1 is a diagram showing an appearance of a disk device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an appearance of a distributor applied to the disk device according to the embodiment of the present invention.

FIG. 3 is a diagram showing a distributor applied to a disk device according to an embodiment of the present invention.

FIG. 4 is a diagram showing recording / reproducing positions of the disk device according to the embodiment of the present invention;

FIG. 5 is a diagram showing a general disc.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1-Disk apparatus 2-Injection port 3-Distributor 5-Distribution rotor 7, 8-Pipe 10-Spray can 11-Nozzle 12-Pickup head 13-First blow pipe 14-Second blow pipe 15-Slide mechanism Department

Claims (4)

[Claims] 1. A disk device having a head for performing at least one of recording information and reading recorded information on a disk-shaped recording medium, comprising: an outlet for blowing gas to the recording medium and the head. A disk device comprising: two blow-off pipes each having: (a) the blow-out ports of the two blow-out pipes facing each other across the head. 2. The disk device according to claim 1, further comprising a distribution mechanism for distributing gas to the two blow-off tubes. 3. The disk device according to claim 2, wherein the distribution mechanism alternately supplies gas to the two outlet pipes. 4. The disk drive according to claim 1, further comprising a slide mechanism for sliding the outlets of the two outlet pipes together with the head.