JPS63244459A - Information processor - Google Patents

Abstract

PURPOSE:To attain sure removal of dust stuck on an information recording medium by using a moving means and a connection/disconnection driving means so as to slide a wiping member onto the information recording means and then restoring it to the initial position. CONSTITUTION:The wiping member 39 is slided relatively from either one initial position of the inner and outer circumferential side to the other position and wipes out the surface with respect to the surface of the information recording medium 11 driven by a rotary driving means 15 by the action of the moving means and the connection/disconnection means 41, 47, 53, 57, 61. Then a control means restores the wiping member to the initial position of the information recording medium 11. Thus, the sticking of the dust again onto the information recording medium 11 wiped out by the wiping member 39 is prevented and then the dust is removed surely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an information processing device, and more particularly, to an information processing device that optically reads information using an optical disk, for example.

(Prior Art) In recent years, optical disk devices have been developed that read document data and image information from, for example, optical disks having a large capacity recorded thereon.

In an optical disk as an information storage medium used in this optical disk device, a frequency-modulated information signal is stored in an information storage layer in the form of rectangular small holes (bits), and a transparent substrate is provided in this information storage layer. Laminated. Such optical discs are housed in cassettes to prevent a large amount of dust from adhering to the substrate of the optical disc, or from being directly touched by hands and dirt from the hands.

The optical disk device includes a rotary drive unit that rotates the optical disk exposed from the cassette, and a device that irradiates a laser beam from an optical head with the information storage layer as a focal point and reads information using the reflected or transmitted light. An Ia structure having an optical head is provided. This mechanism section is housed in a box-shaped housing, and an opening for inserting or removing a cassette is formed in the front of the housing. A shutter is attached to the opening, and this shutter is kept open except when inserting or removing the cassette to prevent dust and the like from entering the inside of the casing.

By the way, the optical head of an optical disk device irradiates laser light with the information storage layer of the optical disk as the focal point, so even if a small amount of dust adheres to the surface of the substrate, this dust has no effect on the information reading performance. small.

However, when an optical disk device is used for many years, dust enters the mechanism through the opening when the shutter is opened or the gap between the opening and the shutter.

On the other hand, when an optical disk is used, the mechanical part into which dust has entered is exposed from the cassette, so there is a risk that this dust will settle on the board and accumulate in a large amount in some areas. Further, even if the optical disk is housed in the cullet 1, there is a risk that dust may enter through the gaps between the cullet and adhere to the substrate after many years of use, resulting in a large amount in some areas.

In this way, when an optical disk with a large amount of dust attached is inserted into an optical disk device and used, the laser light emitted from the optical head will be affected by this large amount of dust.

However, conventional optical disc devices do not have a mechanism to remove large amounts of dust attached to the optical disc, and the problem is that the irradiated laser light is affected and information cannot be read accurately. There is.

(Problems to be Solved by the Invention) As mentioned above, conventional information processing devices are not equipped with a mechanism to remove dust attached to information storage media, and there is a risk that information may not be read accurately. be.

In addition, if the information processing device does not have a mechanism to remove dust as described above, it is necessary to disassemble the cassette in which the information storage medium is stored, take out the information storage medium stored inside, and remove the dust that may stick to the cassette. Do not wipe off the dust with something like record cleaner (you will have to wipe it off).

The present invention has been made in view of the above problem, and an object of the present invention is to provide an information processing device that can remove dust that has settled on an information storage medium.

[Structure 1 of the Invention (Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for wiping the surface of a rotatable information storage medium by being provided so as to be able to contact the surface. a wiping member for moving the wiping member toward and away from the surface of the information storage medium; A moving means for moving the wiping member and a reading means for reading information stored in the information storage medium rotated by the drive of the rotational driving means, the moving means and the separation driving means move the wiping member to the information storage medium. and control means for returning to the initial position after relative sliding.

(Function) In the above configuration, by the action of the moving means and the separation drive means, the wiping member is moved to either the inner circumference side or the outer circumference side with respect to the surface of the information storage medium that is rotated by the drive of the rotational drive means. This surface is wiped by relative sliding from one initial position to the other. After that, the control means returns the wiping member to the initial position on the information storage medium.

(Example) Examples of the present invention will be described in detail below based on the drawings.

1 to 3 show an optical disk device as an information processing device according to an embodiment of the present invention.

In FIG. 1, an optical disk device 1 has an opening 7 formed on the front surface of a housing 3 through which a cassette 5 can be inserted into or taken out from the housing 3. As shown in FIG. A shutter 9 is attached to the opening 7, and the shutter 9 is closed except when the cassette 5 is inserted or removed to prevent dust and the like from entering the inside of the housing 3.

A disc-shaped optical disc 11 is housed in the cassette 5 as an information storage medium. The optical disk 11-6 has an information storage layer formed with a pixel having a diameter of about 0.8 μm, and a substrate made of tempered glass or the like is laminated on the surface of the information storage layer.

The cassette 5 can be divided into two parts, for example, a first storage part 13 in the front half from the center and a second storage part 15 in the rear half in the direction of insertion into the optical disk device 1. When using the optical disc 11, the cassette 5
is divided, and the central portion of the optical disc 11 is exposed in the diametrical direction. Further, when the optical disc 11 is not in use, a locking mechanism (not shown) operates to prevent the cassette 5 from being divided and to prevent dust from adhering to the surface of the optical disc 11.

Inside the housing 3, a flat base 17 is disposed against the bottom surface of the housing 3. The base 17 is anti-vibration supported on the bottom surface of the housing 3 by anti-vibration legs 19 made of elastic material such as rubber. Therefore, even if the housing 3 is vibrated in the plane direction of the bottom surface or in a direction perpendicular to this plane direction, the vibration is absorbed by the vibration isolating legs 1.
It is possible to suppress the absorption of water and transmission to the base 17.

The base 17 is provided with a feeder (not shown) that is rotatable about a rotation axis (not shown).

The feeder includes a pair of upper and lower rollers 21a for transporting the cassette inserted through the opening 7 into the housing 3;
A plurality of 21b are arranged in order from the front part to the rear part. The rollers 21a and 21b are configured to be driven to rotate in forward and reverse directions by a motor of a loading mechanism (not shown).

The feeder also includes a fixing device that fixes the cassette 5 that has reached the predetermined position shown in FIGS. A dividing device for dividing the storage section 15 into two is also attached (both not shown). As a result, the central portion of the optical disc 11 is exposed from the cassette 5 in the diametrical direction.

The base 17 is provided with a turntable 23 on which the optical disc 11 is placed, and a spindle motor 25 as a rotation drive means for rotating the turntable 23. The spindle motor 25 is attached to the base 17
The motor mounting frame 26 is fixed to the motor mounting frame 26. On the other hand, a clamper 27 is provided in the feeder at a position above the cassette 5 and facing the turntable 23.

The feeder is rotated upward when inserting and removing the cullet 5, but when the cassette 5 reaches the predetermined position, the clamper 27 is rotated in a direction to hold the optical disk 11 in a compressed manner. As a result, the central portion of the optical disc 11 is held between the turntable 23 and the clamper 27.

A cylindrical support 29 is erected on the base 17, and when the optical disc 11 is held, the cassette 5 is mounted on the support 29.
It is supported by 9. Therefore, the optical disc 11 does not come into contact with the inner wall of the cassette 5.

The lower side of the optical disc 11 placed on the turntable 23 and on the base 17 is, for example, on the left side (upper side in FIG. 3) when viewed from the insertion direction of the optical disc 11, as shown in FIG. An optical head 31 (reading means) is installed in ( ). The optical head 31 is configured to irradiate a laser beam onto the lower surface of the optical disc 11 and receive the reflected light.

The optical head 31 is fixed to a slider 33, and the slider 33 is slidably attached to a pair of shafts 35. The shaft 35 is provided on the base 17 and extends parallel to the radial direction of the optical disc 17.

The slider 33 is provided on the base 17 or attached to a near motor 37, and is configured to reciprocate along the shaft 35 when driven by the linear motor 37. Thereby, the storage information stored on the optical disk 11 that is rotated by the drive of the spindle motor 25 can be read. Further, the optical head 31 is equipped with a focusing mechanism, a tracking mechanism, etc. for accurately reading information on the optical disc 11.

Then, on the lower surface side of this optical disc 11, the base 1
A cleaner 39 as a wiping member is provided on the top of the optical disc 7 on the right side (lower side in FIG. 3) when viewed from the insertion direction of the optical disc 11. The cleaner 39 is, for example, a substantially regular hexagonal cylinder sponge covered with felt, and the cleaner 39 has a structure in which the top surface of the cleaner 39 can be moved into and out of contact with the lower surface of the optical disk 11 . That is, the cleaner 39 is attached to the swinging tip of the swinging lever 41 that can swing freely, and
is in the shape of an oval when viewed from above.

The swing lever 41 is composed of a leaf spring. The base end 43 of the swing lever 41 is fixed to the upper surface of the gear 45.
5 is supported by a first support shaft 47 erected on the base 17 so as to be vertically movable and rotatable. A sector gear 49 is provided to mesh with the gear 45, and the sector gear 49 is rotatably supported by a second support shaft 51 pivotally supported on the base 17.

A worm wheel 53 is connected to the second support shaft 51,
A gear 59 connected to a drive shaft 57 of a motor 55 is meshed with the gear wheel 53 . Therefore,
By driving the motor 55, the sector gear 49 rotates via the worm gear 59 and the worm wheel 53. The sector gear 49 has some teeth cut out. Therefore, even if the motor 55 is driven, its driving force is intermittently transmitted to the gear 45.

A flat surface 61 and a cam surface 63 are formed at the bottom of the gear 45 . An intermediate cam 65 rotatably supported by the first support shaft 47 is provided at the lower part of the gear 45, and the intermediate cam 65 has a flat surface 67 that engages with the flat surface 61 and the cam surface 63, and A cam surface 69 is formed.

Further, a ratchet member 71 fixed to the first support shaft 47 is provided at the lower part of the intermediate cam 65, and the intermediate cam 65 and the ratchet member 71 are engaged with each other by an inclined portion 73°75, so that the intermediate cam 65 is connected to the ratchet member. 71, it is rotatable only in one direction (clockwise direction in FIG. 3).

A spring seat 77 is fixed to the upper end of the first support shaft 47, and seven compression springs are compressed between the spring seat 77 and the base end 43 of the swing lever 41. The biasing force of the compression spring 79 biases the gear 45 toward the intermediate cam 65, and also biases the intermediate cam 65 toward the member 71 toward the latch I1.

Then, when the driving force of the motor 55 is transmitted to the gear 45 and the gear 45 rotates counterclockwise in FIG. 3, the cam surface 63 of the gear 45 engages with the cam surface 69 of the intermediate cam 65, and the spring The gear 45 and the swing lever 41 rise against the urging force of the gear 79.

When the swing lever 41 is raised in this manner, the top surface of the cleaner 39 is pressed against the lower surface of the optical disc 11 with a predetermined pressure due to the elastic force of the swing lever 41.

A tension spring 83 is stretched between the other end of the swing lever 41 and a locking portion 81 fixed on the base 17 . In the natural state where the sector gear 49 and the gear 45 are disengaged, the swinging lever 41 rotates clockwise in FIG. The configuration is such that it is in the 0 position (initial position).

The swinging lever 41 has a length that allows the tip of the swinging lever to move between the outer circumference and the inner circumference of the optical disc 11 . Therefore, when the driving force of the motor 55 is being transmitted to the gear 45, the cleaner 39 comes into contact with the lower surface of the optical disk 11 from the inner circumference, and moves to the outer circumference while maintaining this contact state. When the swing lever 41 is rotated to the position (If) shown by the imaginary line in FIG. 3, the sector gear 49 and the gear 45 are disengaged from each other.

Such a motor 55. Sector gear 49. Gear 45, intermediate cam 65. Ratchet member 71. The spring 79 and the swing lever 41 constitute a separation driving means and a moving means.

Next, the operation of the optical disk device 1 etc. having the above configuration will be explained.

In the above configuration, when the cassette 5 is inserted into the optical disk device 1 through the opening 7 of the housing 3, the cassette 5 is transported inside by the feeder mechanism and fixed at a predetermined position by the locking device. Thereafter, the cassette 5 is divided by a dividing device, and the central portion of the optical disc 11 is exposed in the diametrical direction. The optical disk 11 is held between the turntable 23 and the clamper 27 by the feeder m structure.

By the way, when the optical disc 11 is used for many years, dust adheres to the surface of the substrate of the optical disc 11.

Therefore, for example, by manually operating a cleaning switch (not shown) provided in the optical disk device 1, the motor 55 is not driven. Thereafter, the spindle motor 25 rotates the turntable 23 to rotate the optical disc 11.

When the motor 55 is driven to rotate, the worm wheel 53 is rotated via the worm gear 59, and at the same time, the sector gear 49 is rotated. Gear 45 meshing with sector gear 49
is rotated counterclockwise in FIG. 3, but the intermediate cam 6
5 is prevented from rotating counterclockwise by the ratchet member 71 as shown in FIG.
3.69, this gear 45 is pushed upward against the biasing force of the compression spring 79. When the gear 45 is pushed upward, the cleaner 39 is moved through the swing arm 22.
is also pushed up and comes into contact with the lower surface of the optical disc 11. Since the swing lever 41 is made of a leaf spring, the cleaner 39 is always pushed toward the lower surface of the optical disc 11 by the biasing force of the leaf spring. Next, the turntable 23 is rotated by the spindle motor 25, and the optical disc 11 is rotated. When the gear 45 is further rotated, the swing lever 41 moves from the inner circumferential side (I) position in FIG. 3 to the outer circumferential side (I).
F) is rotated counterclockwise to position.

At this time, the tip of the cam surface 63 moves along the flat portion 67, so the cleaner 39 moves from the (I) position to the (n) position while contacting the lower surface of the optical disk 11. Therefore, the dust adhering to the lower surface of the optical disc 11 is wiped off by these three cleaners.

As shown in FIG.
When rotated to the position, the cam surface 63 of the gear 45 engages with the cam surface 69 of the intermediate cam 65, and the gear 45 is pushed down by the biasing force of the compression spring 79, and at the same time the swing lever 41 and the cleaner 31 can also be lowered. At this time,
Since the gear 45 is located at the toothless portion of the sector gear 49, it can freely rotate. Therefore, a force is applied to the swing lever 41 to rotate it from the outer peripheral side (I) position to the inner peripheral side (I> position) due to the tensile force of the tension spring 83. It is rotatable in the clockwise direction with respect to the member 71. Therefore, the gear 45 is rotated in the clockwise direction together with the ratchet member 71.

This rotation of the gear 45 causes the swing lever 41 to rotate from the outer peripheral side (II) position to the inner peripheral side (I) position.

Thereafter, the meshing with the gear 45 is released by the action of the sector gear 49, and the swing lever 41 returns from the outer peripheral side (I) position to the inner peripheral side (I) position by the urging force of the tension spring 83. At this time, the swing lever 41 swings downward in FIGS. 4 and 5 due to the urging force of the compression spring 79, so that the cleaner 39 is not in contact with the lower surface of the optical disc 11.

In this way, after the cleaner 39 wipes off the dust on the surface of the optical disc 11, it returns to the position (I) on the inner circumferential side without contacting the optical disc 11, so that the dust attached to the cleaner 39 is returned to the surface of the optical disc 11. It can prevent adhesion to.

At this time, the swing lever 41 moves downward in FIGS. 4 and 5 due to the urging force of the compression spring 79, so that the cleaner 39 is not in contact with the lower surface of the optical disc 11.

In this way, after the cleaner 39 wipes off the dust on the surface of the optical disc 11, it returns to the position (I) on the inner circumferential side without contacting the optical disc 11, so that the dust wiped by the cleaner 39 is returned to the optical disc 11. can prevent it from adhering to the surface.

By driving the linear motor 37, the optical head 31 moves along the shaft 35 in the radial direction of the optical disk 11 from which dust has been wiped off, irradiates the laser beam, receives the reflected light, and stores it. It reads information. Therefore, the laser beam irradiated from the optical head 31 is not affected by dust, and information can be read accurately.

That is, in this invention, when the cassette 5 is inserted into the optical disc device 1, the dust attached to the optical disc 11 is removed.
Since the cassette 5 is wiped off with the cleaner 39 as described above without disassembling it, even a general user can easily remove the dust attached to the optical disc 11.

It should be noted that the present invention is not limited to the above-mentioned embodiment, but can also be applied to, for example, a cassette 63 as shown in FIG. 6 as a cassette for storing the optical disc 11. That is, this cassette 63 is provided with a window 65 that exposes both sides of a part of the optical disc 11, and a shutter 67 for opening and closing the window 65 is attached to the window 65. By sliding the shutter 67, the window 65 is opened and closed. It is of the type that

Further, similar effects can be obtained using a wiping member having the same configuration. In this case, for example, a brush-like shape can be considered.

Furthermore, although the optical disk device 1 has been described as an information processing device, the invention is not limited to this, and it can also apply to devices that require removing dust attached to the surface of an information storage medium, such as a floppy disk or a fixed magnetic disk.

Needless to say, the present invention can also be applied to devices using optical cards, video discs, laser discs, compact discs, and the like.

(Effects of the Invention) As explained above, according to the present invention, the wiping member wipes the surface of the information storage medium to remove dust, so that the dust does not accumulate and become large, and the reading performance of the reading means becomes inaccurate. You can prevent it from happening. Moreover, since the wiping member returns to its initial position after wiping the surface of the information storage medium, the dust that has been wiped off by the wiping member is prevented from adhering to the information storage medium again, and the dust can be removed reliably. .

[Brief explanation of the drawing]

1 to 5 show an information processing device according to an embodiment of the present invention, FIG. 1 is an overall perspective view showing this information processing device and an information storage medium used in the device, and FIG. A side sectional view showing the main mechanism of the information processing device, Figure 3 is the same as ■ in Figure 2.
-■ sectional view, FIGS. 4 and 5 are action explanatory views, and FIG. 6 is a perspective view showing another cassette for storing an information storage medium.

Claims (2)

[Claims] (1) A wiping member that is provided so as to be able to come into contact with the surface of the rotatable information storage medium to wipe the surface, and a contact/separation drive means that brings the wiping member into contact with and away from the surface of the information storage medium. a moving means for moving the wiping member from an initial position on either the inner circumferential side or the outer circumferential side of the information storage medium to the other; and an initial position after the wiping member is slid relative to the information storage medium. 1. An information processing device comprising: a control means for returning the information processing device to an information processing device. (2) The information processing device according to claim 1, wherein the separation driving means and the moving means each include a cam mechanism that engages with each other in response to rotational driving force.