JPS63244464A - Information processor - Google Patents

Abstract

PURPOSE:To prevent the read performance of a read means from being inaccurate while avoiding a large quantity of deposited dust by providing a wiping member so as to wiper out the lower side face of an information recording medium, thereby removing the dust. CONSTITUTION:The titled device is provided with a driving means 25 driving the information recording medium 11, the wiping member 39 provided so as to be brought into contact with the lower side surface of the information record ing means 11 driven by the driving means 25 to wipe out the surface, contact/ uncontact means 41, 47, 53, 57, 61 contacting/uncontacting the wiping member 39 to/from the lower surface of the information recording medium 11 and a read means to read information recorded on the information recording medium 11 driven by the drive means 25. In bringing the wiping member 39 into contact the lower surface of the driven information recording medium 11 to slide it, the dust stuck on the surface of the lower side of the information medium 11 is wiped out and dropped downward by the wiping member 39. In this case, since the wiping member 39 is slid to the lower side surface of the information recording medium 11, the sticking of the dust wiped out by the wiping member 39 again onto the information recording medium 11 due to gravity is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) 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. It is layered v4. 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.

An optical disk device includes a rotation drive unit that exposes such an optical disk from a cassette and drives it to rotate, and an optical head that irradiates light with the information storage layer as a focal point and reads information using the reflected light or transmitted light. A mechanism section having an optical head for the purpose of the camera is provided. This mechanism section is housed in a box-shaped housing, and an opening is formed in the front of the housing to insert or take out the parts 1 to 1. 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, since the optical head of an optical disk device irradiates laser light with the information storage layer of the optical disk as the focal point, even if raw dust adheres to the surface of the substrate, this dust has little effect on the information reading performance. .

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

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 adhere to the substrate and accumulate in a large amount in some areas. Further, even if the optical disk is housed in a cassette, there is a risk that dust may enter through the gap in the cassette and adhere to the substrate after years of use, causing a large amount of dust to accumulate locally.

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 is affected by the large amount of dust.

However, conventional optical disk devices do not have a mechanism to remove the large amount of dust that adheres to the optical disk, which affects the irradiated laser light and prevents accurate reading of information. There's a problem.

(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 optical disk device 1 does not have a mechanism for removing dust as described above, it is possible to disassemble the cassette 5 in which the optical disk 11 is stored, take out the optical disk 11 stored therein, and remove the dust that may stick to the cassette 5. You will have to wipe off the dust with something like record cleaner.

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 attached to an information storage medium.

[Structure of the Invention (Means for Solving the Problems)] In order to achieve the above object, the present invention provides a rotational drive means for rotating an information storage medium, and a rotational drive means for rotating the information storage medium by the drive of the rotational drive means. a wiping member provided so as to be able to come into contact with the lower surface of the medium and for wiping the surface; a contact/separation drive means for bringing the wiping member into contact with and away from the lower surface of the information storage medium; The apparatus is configured to include a reading means for reading information stored in an information storage medium that rotates by being driven by the rotational driving means.

(Function) In the above configuration, the separation drive means brings the wiping member into contact with and slides on the lower surface of the information storage medium which is rotated by the operation of the rotation drive means.

As a result, the dust adhering to the lower surface of the information storage medium is wiped off by the wiping member and falls downward.

At this time, since the wiping member is slid against the lower surface of the information storage medium, it is possible to prevent dust that has been wiped off by the wiping member due to gravity from adhering to the information storage medium again.

(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 disc 11 has bits with a diameter of about 0.8 μm formed on its information storage layer, 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. Then, when using the optical disc 11,
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, thereby preventing 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 an 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.
9 can be prevented from being absorbed and transmitted to the base 17.

A feeder (not shown) is provided on the base 17 and is rotatable about a rotation axis (not shown). The cassette inserted through the opening 7 is inserted into the feeder through the housing 3.
A pair of upper and lower rollers 21a, 2 for conveying inside
A plurality of 1b are arranged in order from the front to the rear. 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 cassette 5, but when the cassette 5 reaches the predetermined position, the clamper 27 is rotated in a direction to press and hold the optical disk 11. 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 bottom side of the optical disc 11 placed on the turntable 23 and the base 17 are, 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. ) is provided with an optical head 31 (reading means). The optical head 31 is configured to irradiate a laser beam onto the lower surface of the optical disk 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 11.

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 rectangular sponge covered with felt, and its length direction (vertical direction in FIG. 3) is approximately the same as the radial dimension in which the information storage layer is formed on the optical disc 11. They have the same dimensions.

The cleaner 39 is configured such that its top surface can come into contact with and separate from the bottom surface of the optical disk 11. That is, cleaner 3
Reference numeral 9 is attached to the tip of a rotatable lever 41 having a curved cross section, and the rotary lever 41 rotates about a rotary shaft 43 . The rotation shaft 43 is supported by a bearing 45, and the bearing 45 is fixed onto the base 17 with screws or the like.

As a result, the rotating lever 41 rotates with respect to the base 17 between a contact state with the optical disc 11 shown by a solid line and a non-contact state shown with a phantom line, so that the top surface of the cleaner 35
It comes into contact with and dissociates from the lower surface of .

On the base 17, there is a bearing 4 on the lower side of the optical disk 11.
Solenoid 47 is located at the back of the housing 3 from 5 (right side in Figure 2).
is provided. The solenoid 47 has a movable core 49, and a pin 51 is provided at the tip of the movable core 49. A compression spring 53 is compressed between the solenoid 47 and the pin 51, and the compression spring 53 is compressed between the solenoid 47 and the pin 51. Spring 53
Movable iron core 1! I9 is biased toward the rotating lever 41 by the solenoid 47.

A first tension spring 57 is stretched between the base end 55 of the rotating lever 41 and the movable iron core 49. Also,
The base 17 is provided with four locking portions on the front side of the housing 3 from the bearing 45 (on the left side in FIG. 2), and a second A tension spring 61 is tensioned.

The tensile forces of the first and second tension springs 57 and 61 are approximately equal, so in the natural state, the pivot lever 41 is pivoted to the position shown by the imaginary line in FIG. 2, and the cleaner 39 is A non-contact state is maintained with respect to the optical disc 11.

On the other hand, when current is applied to the solenoid 47, the movable iron core 49 moves between the compression spring 53 and the second tension spring 61.
is attracted to the solenoid 47 against the urging force of. As a result, the rotating lever 41 is rotated clockwise in FIG. 2 via the first tension spring 57, and the top surface of the cleaner 39 comes into contact with the optical disc 11. Note that the first tension spring 57 contributes to the cleaner 39 gently coming into contact with the optical disc 11 by its tensile force.

Rotating lever 41 as described above. The solenoid 47, each spring 53, 57, 61, etc. constitute a separation driving 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 then held between the turntable 23 and the clamper 27 by the feeder mechanism.

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 on the optical disk device 1, the solenoid 47 is energized and the cleaner 39 is brought into contact with the lower surface of the optical disk 11.

Note that the cleaner 39 may be configured to come into contact with the optical disc 11 for a predetermined period of time automatically in conjunction with the playback switch of the optical disc 11 without providing a leaning switch as described above. Further, when the cleaner 39 contacts the optical disc 11, the contact is made gently due to the biasing force of the second tension spring 61, so that it is possible to suppress the occurrence of scratches or the like on the optical disc 11 due to the contact of the cleaner 39.

Thereafter, the spindle motor 25 rotates the turntable 23 to rotate the optical disc 11. At this time, the cleaner 39 in contact with the lower surface of the optical disk 11 wipes the entire circumference of the lower surface of the optical disk 11 to easily wipe off dust. Since the cleaner 39 wipes the lower surface of the optical disk 11 in this way, it is possible to prevent the dust after wiping from adhering to the lower surface of the optical disk 11 due to gravity, improving the dust wiping performance. .

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, and receives the reflected light to read the stored information. It is read.

Therefore, the laser beam irradiated from the optical head 31 is not affected by dust, and information can be read accurately.

On the other hand, when the current of the solenoid 47 is cut off, the compression spring 5
3 and the second tension spring 61 push the movable core 49 to the left in FIG. 2, and the rotary lever 41 is rotated counterclockwise in FIG. move. As a result, the rotating lever 4
1 returns to the original position shown by the imaginary line, and the cleaner 39 comes into contact with the optical disk 11 only when necessary, so that wear due to sliding contact between the two can be suppressed.

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. 4 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, a shutter 67 for opening and closing the window 65 is attached to the window 65, and the window 65 is opened and closed by vibrating the shutter 67. It is of type.

Moreover, similar effects can be obtained using other configurations of the wiping member. 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 lower surface of the information storage medium to remove dust, so that the reading performance of the reading means is improved without a large amount of dust accumulating. Inaccuracy can be reduced. Furthermore, since the lower surface of the information storage medium is wiped, the dust wiped off by the wiping member falls downward due to gravity, and is prevented from adhering to the information storage medium again, allowing the dust to be removed reliably.

[Brief explanation of drawings]

1 to 3 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.
-■ is a sectional view, and FIG. 4 is a perspective view showing another carre 1 for storing an information storage medium.

Claims (1)

[Claims] a rotational drive means for rotating an information storage medium; a wiping member provided so as to be able to contact the lower surface of the information storage medium rotated by the drive of the rotational drive means and for wiping the surface; The wiping member is provided with: a separating drive means for moving the wiping member toward and away from the lower surface of the information storage medium; and a reading means for reading information stored in the information storage medium rotated by the drive of the rotational drive means. An information processing device characterized by: