JPS63244468A - Information processor - Google Patents

Abstract

PURPOSE:To remove the dust on the surface of an information recording medium without giving effect of cleaning action onto the read performance by arranging a read means and a cleaning means to a position opposed to the information recording means. CONSTITUTION:Cleaning means 41, 47, 53, 57, 61 provided in contact with the surface of an information recording medium 11 driven by a drive means 25 having a wipe means 39 to wipe out the surface, and a read means 31 to read the information stored on the information recording medium 11 driven by the drive means 25 are provided and the read means 31 and the cleaning means 41, 47, 53, 57, 61 are arranged to a position opposite to the information recording medium 11. In contacting and sliding the wipe member 39 to the surface of the information recording medium 11 driven by the drive means 25, the dust adhered to the surface of the information recording medium 11 is wiped out by the wipe member 39. Then the read means 31 reads the information stored on the information recording medium 11.

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 that optically store large amounts of these data and information. 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.

An optical disk device includes a rotation driving means for exposing such an optical disk from a cassette and rotating it, and a means for irradiating a laser beam from an optical head with the information storage layer as a focal point and reading information by the reflected or transmitted light. An optical head is provided. This mechanism is housed in a box-shaped housing, and there is a caret on the front of the housing.
- is formed with an opening for insertion or removal.

A shutter is attached to the opening, and this shutter is opened except when inserting or removing the cassette to prevent dust from entering the inside of the casing.

Incidentally, since the optical head of an optical disk device irradiates laser light with the information storage layer of the optical disk as a focal point, even if a small amount of 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 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 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 1 through the gap in the cassette and adhere to the substrate, resulting in a large amount of dust 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 optical disk device 1 does not have a mechanism for removing dust as described above, it is possible to disassemble the cartridges 1 to 5 in which the optical disks 11 are stored, take out the optical disks 11 stored therein, and remove the dust. You will have to use something like record cleaner to wipe off the dust that has adhered to the 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 that has settled on 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 the information storage which is rotated by the drive of the rotational drive means. a cleaning means having a wiping member that is provided so as to be able to come into contact with the surface of the medium and wipe the surface; and a reader for reading information stored in the information storage medium that is rotated by the rotation drive means. and the reading means and the cleaning means are arranged at positions facing the information storage medium. .

(Function) In the above configuration, the cleaning means brings the wiping member into contact with and slides on the surface of the information storage medium which is rotated by the operation of the rotational drive means. As a result, the dust attached to the surface of the information storage medium is wiped off by the wiping member. A reading means placed opposite the cleaning means reads the information stored in the information storage medium.

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

FIGS. M1 to M4 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 casing 3 through which a cassette 5 can be inserted into or taken out from the casing 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. 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, thereby preventing dust from adhering to the surface of the optical disc 11.

Inside the casing 3, a flat base 17 is disposed on the bottom surface of the casing 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 20 is provided on the base 17 and is rotatable about a rotation shaft 18 . The feeder 20 has a plurality of upper and lower rollers 21a and 21b arranged in order from the front to the rear for conveying the cassette 5 inserted through the opening 7 into the housing 3. roller 2
1a and 21b are configured to be driven in forward and reverse rotation by a motor of a loading mechanism (not shown).

The feeder 20 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 second storage section 15 into two is also attached (not shown). As a result, the central portion of the optical disk 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 20 at a position above the cutter 1-5 and facing the turntable 23.

The feeder 20 is rotated upward when the cassette 5 is inserted and when the cassette 5 is unloaded 7, but when the cassette 1-5 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 optical disc 1
1 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 between the cassette 5 and the support 29, 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.

On the lower surface side of the optical disc 11 placed on the turntable 23 and on the base 17, for example, as shown in FIG. An optical head (reading means) 31 is provided on the right side in the figure. 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 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 upper 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 (the right side in FIGS. 2 and 3) when viewed from the direction in which the optical disc 11 is inserted. The three cleaners are, for example, approximately square prism-shaped sponges covered with Fell 1-, and their length direction (horizontal direction in FIG. 3) is the same as the radial direction in which the information storage layer is formed on the optical disk 11. The dimensions are approximately the same.

The cleaner 39 is configured such that its bottom surface can come into contact with and separate from the top 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 rotary 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 bottom surface of the cleaner 35 is brought into contact with the optical disc 11.
It comes into contact with and dissociates from the upper surface of .

On the base 17, there is a bearing 4 on the upper side of the optical disk 11.
A solenoid 47 is provided on the deeper side of the housing 3 than the solenoid 5 (on the right side in FIGS. 2 and 3).

The solenoid 47 has a movable core 49, and bins 51 are provided at the tips of the four movable cores. A compression spring 53 is compressed between the solenoid 47 and the bottle 51, and the compression spring 53 biases the movable iron core 49 toward the rotation lever 41 from the solenoid 47.

A spring 57 is elastically installed between the base end 55 of the rotating lever 41 and the movable iron core 49. Further, a locking portion 59 is provided on the base 17, and a tension spring 61 is stretched between the locking portion 59 and the base end portion 55 of the rotating lever 41.

The biasing forces of the spring 57 and the tension spring 61 are approximately equal. Therefore, in the natural state, the rotating lever 41 is rotated to the position shown by the imaginary line in FIG. Maintain contact.

On the other hand, when current is applied to the solenoid 47, the movable core 49 is attracted to the solenoid 47 against the biasing forces of the compression spring 53 and the tension spring 61. As a result, the rotation lever 41 is moved to the second position via the tension spring 57.
The bottom surface of the cleaner 39 comes into contact with the optical disc 11 when it is rotated counterclockwise in the figure. Note that the spring 57 contributes to the cleaner 39 coming into gentle contact with the optical disc 11 due to its elastic force.

As described above, the reach 391, the rotating lever 41°, the solenoid 47, the springs 53, 57°, and 61 constitute a cleaning means. In this way, the optical head 31 and the cleaning means are provided facing each other so as to sandwich the optical disc 11.

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

In the above configuration, when the cassettes 1 to 5 are 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 cutlets 1 to 5 are split by a splitting device, and the center portion of the optical disc 11 is exposed in the diametrical direction. This optical disc 11 is then fed by a feeder mechanism.
is held between the turntable 23 and the clamper 27.

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 solenoid 47 is energized and the cleaner 39 is brought into contact with the upper 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 cleaner 39 contacts the optical disc 11 gently due to the elastic force of the spring 57, so that it is possible to suppress the occurrence of scratches or the like on the optical disc 11.

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 upper surface of the optical disk 11 wipes the entire circumference of the upper surface of the optical disk 11 to easily wipe off dust.

Then, by driving the linear motor 37, the optical head 31 moves in the radial direction along the shaft 35 on the lower surface side of the optical disk 11 from which dust has been wiped off, irradiates the laser beam, and receives the reflected light ( Therefore, the optical disc 11 from which dust has been wiped off is read.
If the surface of the optical head 31 is turned downward, the laser light emitted from the optical head 31 will not be 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 urging force of the tension spring 61 pushes the movable core 49 to the left in FIG.
is rotated in the clockwise direction in FIG. 2 via the tension spring 57. As a result, the rotary lever 41 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 can be wiped with the cleaner 39 as described above without disassembling the cassette 5, even ordinary users can clean the optical disc 1.
Dust attached to 1 can be easily removed.

As described above, the optical head 31 and the cleaning means are provided facing each other so as to sandwich the disk 11. Therefore, the reading of information by the optical head 31 and the removal of dust on the surface of the optical disk 11 by the cleaning means can be performed separately and independently, and they do not interfere with each other. Therefore, the optical head 31
Even if you remove dust from the top surface while reading the information on the bottom surface, the reading performance will not be affected.

Note that the present invention is not limited to the embodiment described above, and for example, the optical head 31 is provided on the lower surface side of the optical disc 11, while the optical head 31 is provided on the upper surface side of the optical disc 11 at a position symmetrical to the optical head 31 with respect to the rotation center of the optical disc 11. A similar effect can be obtained by providing a cleaning means. In this case, the optical head 31 and the cleaning means may be arranged in reverse.

Further, the present invention can also be applied to a cassette 63 as shown in FIG. 5 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.
The window 65 is opened and closed by sliding the window 7.

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 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 reading means and the cleaning means are not located on the same side of the information storage medium, they do not interfere with each other and the cleaning action does not affect the reading performance.

[Brief explanation of the drawing]

1 to 4 show an information processing device according to an embodiment of the present invention, FIG. 1 is an overall perspective view showing the information processing device and an information storage medium used in the device, and FIG. 3 is a front sectional view of the information processing device, FIG. 4 is a sectional view taken along the line IV in FIG. 2, and FIG. 5 is a side sectional view showing the main mechanisms of the information processing device. It is a perspective view showing a cassette of.

Claims (1)

[Claims] A cleaning means having a rotation drive means for rotating an information storage medium, and a wiping member provided so as to be able to come into contact with the surface of the information storage medium rotated by the drive of the rotation drive means and for wiping the surface. , a reading means for reading information stored in an information storage medium rotated by the drive of the rotation driving means, and the reading means and the cleaning means are arranged at positions opposite to the information storage medium. An information processing device characterized by: