JPS63249993A - Information processor - Google Patents

Abstract

PURPOSE:To prevent a bad influence of dust upon information recording or reproducing by replacing a cleaning member, to which dust is stuck, with another fresh cleaning member. CONSTITUTION:A cleaner 21 is attached to a supporting part 37 consisting of a lever 22 having an about L-shaped section and a rectangular frame body 38 stuck to a plane plate-shaped front end part 22a of this lever 22, and a cleaner 21 formed to an approximately quadrandular prism is freely attachably and detachably fitted to the rectangular frame body 38, which is stuck to said front end part 22a, from the side face. The cleaner 21 is detached from the frame body 38 when dust is stuck to the cleaner 21 too much to wipe off dust more, and another fresh cleaner 21 is fitted to the frame body 38, thereby always wiping off dust stuck to an optical disk 1. Thus, a bad influence of dust upon information recording or reproducing is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an information processing apparatus, for example, an information processing apparatus that optically records or reproduces information on an optical disc.

(Prior Art) In recent years, optical disk devices have been developed as information processing devices that optically store large volumes of document data and image information on optical disks as information storage media, or reproduce information from optical disks. .

The optical disc used in the optical disc device records information by forming bits on the information storage layer by irradiation with a light beam. Furthermore, information is reproduced by irradiating the information storage layer with a light beam and detecting the reflected light. However, in such optical discs, if a large amount of dust or the like adheres to the surface of the substrate, or if the surface of the substrate is touched directly with dirt, it may adversely affect the recording or reproduction of information. .

To prevent this, current optical discs are generally housed in cassettes.

However, when such optical discs are used for many years, dust enters through the gaps in the cassette and adheres to the surface of the substrate.

Furthermore, when an optical disk with a large amount of dust attached is inserted into an optical disk device and used, this large amount of dust has a negative effect on the light beam irradiated for recording or reproducing information, and the amount of information that is This had the problem that recording or playback could not be performed.

(Problems to be Solved by the Invention) As described above, conventional information processing devices have the problem that information recording or reproduction becomes inaccurate due to dust attached to the information storage medium. there were.

SUMMARY OF THE INVENTION In order to solve the above problems, it is an object of the present invention to provide an information processing apparatus equipped with a mechanism for removing 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 an information processing apparatus for reproducing information recorded on an information storage medium. A cleaner having a removable cleaning member for removing dust attached to the surface of the information storage medium, and a pressure contact means for bringing the cleaning means into pressure contact with the information storage medium. be.

(Function) The cleaning means is brought into pressure contact with the information storage medium by the pressure contact means,
This information storage medium is rotated. Dust attached to the information storage medium is wiped off by the cleaning member. When a large amount of dust has been wiped off, this cleaning member is replaced with another new cleaning member. Therefore, the dust attached to the information storage medium can be constantly wiped cleanly by the cleaning member, and the recording or reproduction of information will not be adversely affected by the dust.

(Example) The present invention will be explained below based on the drawings.

1 to 4 are diagrams showing one embodiment of an information processing apparatus according to the present invention.

In FIG. 1, an optical disc 1 as an information storage medium has a substrate and an information storage layer. Bits with a diameter of about 0.8 μm are formed in this information storage layer to record information, and the substrate is It is made from a layer of tempered glass. Further, the size of the optical disc 1 is, for example, 300 mm in terms of outer diameter.
mm, inner diameter 35mm.

The thickness is 1 to 8 mm. The optical disc 1 is housed in a substantially square, thin box-shaped cassette 2 in order to prevent dust from adhering to the surface of the substrate. Cassette 2
is divided into two parts from the center into a first housing part 3 and a second housing part 4, and when this cassette 2 is inserted into the information processing device 5, the first housing part 3 and the second housing part 4 are opened, the optical disc 1 is exposed,
This exposed optical disc 1 can be irradiated with laser light. Further, the cassette 2 is usually provided with a locking mechanism (not shown) to lock the first accommodating part 3 and the second accommodating part 4 from opening to prevent dust from adhering to the cassette 2. The first accommodating part 3 and the second accommodating part 4 are made of plastic material, etc., and the information content of the optical disc 1 and the direction of the surface of the optical disc 1 are displayed on the rear end of the first accommodating part 3. A label is attached to keep it safe. Furthermore, when the cassette 2 is closed, its outer dimensions are larger than the length in the insertion direction and the length in the direction perpendicular to the insertion direction. It prevents

On the other hand, an insertion lower for inserting a cassette 2 containing an optical disk 1 is provided on the front surface of a casing 6 of an optical disk device 5, which is an information processing device that records or reproduces information on an optical disk. It is being As shown in FIG. 2, a shutter 8 is attached to the insertion lower, and the cassette 2
The insertion lower is closed by the shutter 8 to prevent dust from entering the device except when inserting and ejecting the device. Inside the housing 6, there is a pair of upper and lower rollers 9a for transporting the cassette 2 inserted into the insertion lower.

A plurality of 9b are arranged in order from the front part to the rear part. When inserting or discharging the cassette 1-2, the rollers 9a and 9b are placed in the feeder mechanism (
(not shown). When the cassette 2 is inserted into the insertion lower, rollers 9a and 9b are rotationally driven by a motor (not shown) of a loading mechanism (not shown), and the cassette 2 is transported inside by the rollers 9a and 9b. When the cassette 2 is transported inside, the locking mechanism is released, the first accommodating part 3 and the second accommodating part 4 are opened, and the optical disc 1 accommodated in the cassette 2 is placed in the center. part is exposed.

The exposed optical disc 1 is placed on the turntable 10 by a loading mechanism. Further, a cap 12 is disposed on the turntable 10, and this cap 12 is moved and pressed toward the turntable 10 by a clamp mechanism (not shown).
and the turntable 10, the turntable 1o
It holds an optical disc 1 placed thereon. This turntable 10 is rotated by a spindle motor 11, whereby the optical disc 1 is rotated at a constant speed.

The cassette 2 is supported by a post 14 erected on the base 13, so the optical disc 1 does not come into contact with the inner wall of the cassette 2. The spindle motor 11 is installed on a base 13 via a motor mounting frame 15, and the base 13 is installed on the bottom surface of the casing 6 via rubber vibration-proof legs 16.

On the other hand, as shown in FIG. 3, the lower surface side of the optical disc 1 placed on the turntable 10 is located on one side (upper side in FIG. 3) of the turntable 10 when viewed from the insertion direction of the cassette 2. is an optical head 1 for recording or reproducing information by irradiating an optical disc 1 with a laser beam;
7 are arranged. The optical head 17 is provided on the base 13 and is fixed to a slider 18 that is slidably attached to a pair of parallel shafts 19 extending in the radial direction of the optical disc 1 . Further, a linear motor 20 is attached to the base 13, and the optical head 17 reciprocates along the shaft 19 by driving this linear motor 20.

Also, the optical disc 1 placed on the turntable 10
A cleaner 21 as a cleaning member for removing dust attached to the optical disc 1 is disposed on the lower surface side, on the other side of the turntable 10 when viewed from the insertion direction of the cassette 2 (lower side in FIG. 3). It is set up. cleaner 21
is a roughly square prism-shaped sponge covered with felt.
This length=7− The length of the leaner 21 is the same as the width of the information storage layer of the optical disc 1. Further, as shown in FIGS. 2 and 4, the cleaner 21 is attached to a support section 37 consisting of a lever 22 having a cross-sectional shape and a rectangular frame 38 fixed to the flat tip 22a. ing. That is, the substantially square prism cleaner 21 is removably fitted into a substantially rectangular frame 38 fixed to the flat tip portion 22a from the side surface.

Further, the cleaner 21 is attached so that its length direction is in the radial direction of the optical disc 1, and the top surface of the cleaner 21 is parallel to and in contact with the lower surface of the optical disc 1. The base end 22b of the lever 22 is rotatably supported by a bearing 24 via a shaft 23, and the bearing 24 is fixed to the base 13 with screws. Accordingly, the lever 22 rotates in the left half in FIG.

A solenoid 25 is installed on the base 13 in a direction perpendicular to the radial direction of the optical disc 1 and on the opposite side to the rotating side of the cleaner 21. The trenoid 25 has a movable core 26, and a spring 27 is stretched between the movable core 26 and the base end 22b of the lever 22, and the tensile force of the spring 27 causes the cleaner 21 to come into contact with the optical disc 1. At times, this cleaner 21 is kept in contact with the optical disc. A pin 28 is provided at the tip of the movable core 26, and two compression springs are compressed between the pin 28 and the solenoid 25, and the movable core 26 is constantly moved toward the base end 22b via the pin 28. energized.

A locking portion 30 is provided on the base 13 on the rotating side of the cleaner 21, and a spring 31 is tensioned between the locking portion 30 and the base end portion 22b. , the lever 22 is always pulled to the position shown by the imaginary line in FIG. Also, this spring 3
1 prevents the cleaner 21 from suddenly coming into contact with the optical disc 1 by its tensile force.

When a current is applied to the solenoid 25, the movable core 26 is drawn toward the right in FIG. 2 against the biasing forces of the compression spring 29 and the springs 27, 31. When the movable iron core 26 is attracted, the lever 22 is pulled via the spring 27 and rotates clockwise from the position of the imaginary line, and the cleaner 21 comes into contact with the optical disc 1. In addition,
The lever 22, the spring 27, and the solenoid 25 constitute a pressure contact means 36. 'Next, the operation of the optical disc 1, optical disc device 5, etc. having the above configuration will be explained.

When the cassette 2 containing the optical disc is inserted into the optical disc device 5 from the insertion lower, it is carried into the interior by the feeder mechanism and taken into the interior, and at the same time, the locking mechanism of the cassette 2 is released and the cassette 2 is inserted into the first storage section 3. and the second accommodating portion 4 are opened, and the central portion of the optical disc 1 is exposed. The optical disc 1 with the center exposed is placed on the turntable 10 by the loading mechanism, the cap 12 is moved and pressed onto the turntable 10 by the clamp mechanism, and the optical disc 1 is held between the turntable 10 and the cap 12. do.

By the way, when the cassette 2 containing the optical disc 1 is used for many years, dust enters through the gaps in the cassette 2 and adheres to the surface of the substrate of the optical disc 1. This adhesion of dust may adversely affect the recording or reproduction of information on the optical disc 1.

Therefore, it becomes necessary to remove dust attached to the optical disc 1. In this optical disk device 5, in order to remove dust attached to the optical disk 1, first, in response to an external instruction, a current is applied to the solenoid 25, and the urging force of the two compression springs and the springs 27 and 31 is applied. The movable iron core 26 is resisted. When the movable iron core 26 is attracted, the lever 22 located at the imaginary line is pulled by the spring 27 and rotates clockwise in FIG. 2. When the lever 22 rotates, the cleaner 21 attached to the tip of the lever 22 cleans the optical disc 1.
The top surface is parallel to the bottom surface of the contact point. At this time, the length direction of the cleaner 21 is arranged to be the same as the radial direction of the optical disc 1, and the length of the cleaner 21 is the same as the width of the information storage layer of the optical disc 1.

Next, the turntable 1 is driven by the spindle motor 11.
0 to rotate the optical disc 1 relative to the cleaner 21. At this time, since the cleaner 21 is in contact with the lower surface of the optical disk 1, the optical disk 1 slides against the cleaner 21, and the dust attached to the lower surface of the optical disk 1 is wiped off by the cleaner 21. At this time, since the length of the cleaner 21 spans the entire width of the information storage layer of the optical disc 1, all dust that may affect the information storage layer of the optical disc 1 is wiped away by the cleaner 21. Therefore, the laser beam irradiated from the optical head 17 is not affected by dust attached to the surface of the optical disc 1, and information can be recorded or reproduced accurately.

By the way, when a large amount of dust is wiped off by the cleaner 21, the optical disc 1 is removed by the cleaner 21.
It becomes impossible to wipe off the dust that has adhered to the surface. In this case, first, when the optical disc 11 is not inserted into the optical disc device 5, the lid 6a of the housing 6 is opened. Next, the cleaner 21 on which a large amount of dust has adhered and cannot be continuously wiped off is removed from the frame 38, and another new cleaner 21 is fitted into the frame 38. Therefore, the cleaner 21 is always in a state of wiping off dust, so that the cleaner 21 can always wipe off the dust attached to the optical disc 1.

Further, when the cleaner 21 comes into contact with the optical disc 1, since the lever 22 is pulled counterclockwise by the spring 31, it does not come into sudden contact with the lower surface of the optical disc 1, but only gently. Therefore, no scratches or the like occur on the optical disc 1 due to contact with the cleaner 21.

In this way, when all the dust that would affect the information storage layer of the optical disc 1 is wiped off by the cleaner 21, the current flowing through the solenoid 25 is cut off. As a result, the movable core 26 is pushed out to the left in FIG. 2 by the urging force of the compression spring 29, and the lever 22 is rotated counterclockwise in FIG. 2 by the tensile force of the spring 31.

Simultaneously with the rotation of the lever 22, the cleaner 21 is separated from the lower surface of the optical disc 1 and returned to the position shown by the two-dot chain line.

With the cleaner 21 held in this position, the optical disc 1 is rotated by the spindle motor 11, and a laser beam is irradiated from the optical head 17 toward the rotating optical disc 1 to record or reproduce information. Therefore, during recording or reproduction, the cleaner 21 is not in contact with the optical disc 1, so that the optical disc 1 is not worn out by the cleaner 21 sliding against it.

On the other hand, if the optical disk device 5 does not have a mechanism for removing dust as described above, the cassette 2 containing the optical disk 1 may be disassembled and the dust attached to the optical disk 1 may be removed using a record cleaner or the like. You'll have to wipe it off.

However, in this invention, when the cassette 2 is inserted into the optical disk device 5, the dust attached to the optical disk 1 is wiped off by the cleaner 21 as described above without disassembling the cassette 2. can be easily removed.

Note that the cassette is inserted between the second storage section 3 and the first storage section 4.
In the case of a mold in which the optical disc 1 is completely exposed by opening the optical disc 1 wide, the optical disc device 1 may have a structure in which the cleaner 21 rotates and slides with respect to the optical disc 1.

In addition, the cassettes 1 and 2 in which the optical disc 1 is stored are of the type in which the first accommodating part 3 and the second accommodating part 4 are opened to expose the central part of the optical disc 1. However, as shown in FIG. 5, the cassette 32 is provided with a window 33 that exposes a part of the optical disk 35, and a shutter 34 for opening and closing the window 33 is attached to the window 33 and the shutter 34 is slidable. A cullet of the type that opens and closes the window 33 may also be used.

Furthermore, although an optical disk device has been described as an information processing device, the present invention is not limited to this, and the present invention is applicable to devices that require removing dust attached to the surface of an information storage medium, such as a floppy disk, a fixed magnetic disk, an optical card, etc.
Needless to say, the present invention can also be applied to devices using video discs, laser discs, and CDs.

[Effects of the Invention] As explained above, according to the present invention, after the cleaning member is brought into pressure contact with the rotating information storage medium and the dust adhering to it is wiped off, the cleaning member with the dust adhering to it is cleaned by another cleaning member. Since the cleaning member can be replaced with another member, dust adhering to the information storage medium can always be wiped cleanly with the cleaning member. Therefore, the recording or reproducing of information is not adversely affected by dust and can be performed accurately.

[Brief explanation of drawings]

1 to 4 are diagrams showing one embodiment of an information processing device according to the present invention, and FIG. 1 is a perspective view showing this information processing device and an information storage medium used in this device. 2
The figure is a sectional view showing the main mechanism of this information processing device.
The figure is a sectional view taken along the line ■--■ in FIG. 2, and FIG. 4 is a perspective view showing the cleaning means. FIG. 5 is a perspective view showing another example of a cassette for storing an information storage medium. 1.35... Information storage medium 5... Information processing device 21... Cleaning member 36... Pressing means

Claims (1)

[Claims] In an information processing device that reproduces information recorded on an information storage medium, there is provided a cleaning means having a removable cleaning member for removing dust attached to the surface of the information storage medium, and the cleaning means is connected to the information storage medium. 1. An information processing device comprising: pressure contact means for bringing pressure into contact with a medium.