JPS63244461A - Information processor - Google Patents

Abstract

PURPOSE:To remove the dust stuck onto the information recording medium by controlling the drive of a contact/uncontact driving means so as to disconnect a wiping member after it is brought into contact with the surface of the informa tion recording medium for a prescribed time. CONSTITUTION:The titled device is provided with a driving means 25 driving the information recording medium 11, a wiping member 39 provided so as to bring into contact with the surface of the information recording medium 11 driven by the driving means 25 to wipe out the surface, contact/uncontact driv ing means 41, 47, 53, 57, 61 contacting/uncontacting the wiping member 39 to/ from the surface of the information recording medium 11 and a control means controlling the drive of the contact/uncontact driving means and parting it after the wiping member 39 is brought into contact with the surface of the information recording medium 11 for a prescribed time. Thus, the dust stuck onto the optical disk 11 is easily removed even by a general user.

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 store large amounts of such 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 pits, 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. A mechanism section having an optical head 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 the shutter is closed 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 a small amount of dust adheres to the surface of the substrate, this M 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 between the cassettes 1- and adhere to the substrate after years of use, 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 is affected by the 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 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 the information storage which is rotated by the drive of the rotational drive means. a wiping member provided so as to be able to come into contact with the 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 surface of the information storage medium, and a control means for controlling the driving of the contact/separation drive means to cause the wiping member to separate from the surface of the information storage medium after being in contact with the surface for a predetermined period of time. The configuration includes the following.

(Operation) In the above configuration, the control means controls the drive of the separation drive means to bring the wiping member into contact with and slide on the surface of the information storage medium which is rotated by the operation of the rotation drive means for a predetermined period of time. Thereafter, the control means controls the contact/separation drive means to separate the wiping member from the surface of the information storage medium. As a result,
The dust attached to the surface of the information storage medium is wiped off by the wiping member.

(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 disc device M1 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 pits with a diameter of about 0.8 μm formed in 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 (not shown) is provided on the base 17 and is rotatable about a rotation axis (not shown). The feeder has a pair of upper and lower rollers 21a and 2 for conveying the currys 1 to 1 inserted through the opening 7 into the housing 3.
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 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 is provided at. 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 lower surface side of this optical disc 11, the base 1
A cleaner 39 as a wiping member is numbered on the right side (lower side in FIG. 3) when viewed from the insertion direction of the optical disk 11. The cleaner 39 is, for example, a substantially rectangular sponge covered with felt, and the cleaner 39 has a third section along its length.
The dimension in the vertical direction (in the figure) is approximately the same as the dimension in the radial direction in which the information storage layer is formed on the optical disc 11.

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 on the far side of the housing 3 from 5 (on the 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 bottle 51, and the compression spring 53 causes the movable iron core 49 to move from the solenoid 47 to the rotation lever 41.
biased toward the side.

A first tension spring 57 is stretched between the base end 55 of the rotating lever 41 and the movable iron core 49. Also,
A locking portion 59 is provided on the base 17 on the front side of the housing 3 than the bearing 45 (on the left side in FIG. 2). Two tension springs 61 are 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. maintains a non-contact state with respect to the optical disc 11.

On the other hand, when current is applied to the solenoid 47, the solenoid 47
is excited, and the movable iron core 49 is attracted to the solenoid 47 against the biasing forces of the compression spring 53 and the second tension spring 61.

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.

Further, the optical disk device 1 includes a control means (not shown) for controlling the drive of this separation drive means. This control means is composed of a CPU, etc., and is configured to receive various input signals, energize the solenoid 47 for a predetermined period of time, and then cut off the energization.

Input signals to such a control means include, for example, the operation of a cleaning switch, the operation of a feeder mechanism, the operation of a loading mechanism, the operation of a clamp mechanism, or the rotational drive of the spindle motor 25. In this embodiment, the on/off of the solenoid 47 is controlled in conjunction with the rotational drive of the spindle motor 25. This control means is executed every time the cassette 5 is inserted into the optical disk device 1.

Next, the operation will be explained based on the flowchart shown in FIG.

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 process proceeds from step S1 to step S3, where 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. Thereafter, in step S5, this optical disc 11 is placed on the turntable 23 by the loading mechanism, and in step S7
If it is determined that the optical disc 11 is placed on the turntable 23, the process proceeds to step S9, where the clamp mechanism is activated and the optical disc 11 is clamped between the turntable 23 and the clamper 27.

Thereafter, in step S11, the spindle motor 25 rotates the turntable 23 to rotate the optical disc 11. At this time, the control means energizes the solenoid 47 using the stem 813 as the spindle motor 25 rotates, thereby bringing the cleaner 39 into contact with the lower surface of the optical disk 11 . 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, thereby easily wiping off dust.

At this time, when the cleaner 39 contacts the optical disc 11, the cleaner 39 contacts the optical disc 11 gently due to the biasing force of the second tension spring 61, so that it is possible to suppress scratches and the like from occurring on the optical disc 11.

Next, in step S15, the spindle motor 25
It is determined whether a predetermined time has elapsed since the rotation of the solenoid 47, and if the predetermined time has elapsed, the process proceeds to step S17 and the control means cuts off the energization of the solenoid 47.

In step S17, when the electric power P of the solenoid 47 is turned off, the movable core 49 is pushed out to the left in FIG. It rotates counterclockwise in FIG. 2 via the tension spring 57. As a result, the rotation lever 41 returns to the original position shown by the imaginary line, and the cleaner 39 separates from the surface of the optical disc 11.

Therefore, since the cleaner 39 comes into contact with the optical disk 11 only when necessary, wear of the optical disk 11 due to the sliding contact of the cleaner 39 can be suppressed.

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.

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.

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. 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. By sliding the shutter 67, the window 65 is opened and closed. It is of the type that

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 wiping member slides into contact with the information storage medium only when necessary, wear on the information storage medium can be suppressed.

[Brief explanation of the drawing]

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. FIG. 5 is a side view showing the main mechanism of the information processing device, and is a perspective view showing another cassette that stores 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 come into contact with the surface of the information storage medium rotated by the drive of the rotational drive means and for wiping the surface, and this wiping member. The wiping member is provided with: a separation driving means for causing the wiping member to come into contact with and away from the surface of the information storage medium; and a control means for controlling the driving of the separation driving means to cause the wiping member to separate from the surface of the information storage medium after being in contact with the surface for a predetermined period of time. An information processing device characterized by: