JPS63244475A - Information processor - Google Patents

Abstract

PURPOSE:To prevent adverse effect onto the recording or reproduction of information due to dust by using a pressing means so as to press the cleaning member into contact onto the information recording medium and driving the information storage medium. CONSTITUTION:The cleaning means 21 to remove the dust adhered onto the surface of an information recording medium 1 and a press contact means 36 pressing the cleaning means 21 into contact onto the information recording medium 1 are provided, the press contact means 36 presses the cleaning member 21 onto the information recording medium 1 and the dust adhered onto the surface of the information recording medium 1 is removed as the information recording medium 1 is being driven. Thus, the adverse effect of the recording or reproduction of information due to dust is avoided and the recording/ reproducing is accurately attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to an information processing apparatus, and for example, to 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 dirt from your hands adheres to the surface of the substrate, it may adversely affect the recording or reproduction of information. do not have.

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, if an optical disk with a large amount of dust attached is inserted into an optical disk device and used, this large amount of dust will have a negative effect on the light beam irradiated for recording or reproducing information, resulting in accurate recording or reproduction of information. This had the problem that playback could no longer 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 device that reproduces information stored in a rotatable information storage medium. , comprising a cleaning means 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,
The cleaning means is brought into pressure contact with the information storage medium by the pressure contact means, and the dust attached to the surface of the information storage medium is removed as the information storage medium is rotated.

(Function) A cleaning member is brought into pressure contact with the information storage medium by a pressure contact means,
and rotating this information storage medium.

Along with this rotation, dust adhering to the information storage medium is removed by the cleaning member, so that recording or reproduction of information is not adversely affected by the dust.

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

1 to 3 are diagrams showing an 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, and the information storage layer is formed with pits 1 to 1 with a diameter of about 0.8 μm to record information. is formed from a reinforced glass layer. 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 from the center into a first accommodating section 3 and a second accommodating section 4, and when this cassette 2 is inserted into the information processing device 5, the first cassette 2 is inserted into the information processing device 5.
The accommodating portion 3 and the right half portion 4 are opened, the optical disk 1 is exposed, and the exposed optical disk 1 can be irradiated with a laser beam. In addition, this cassette 2 usually has a locking mechanism (not shown) to prevent dust from adhering to it.
is provided to lock the first accommodating portion 3 and right hand portion 4 from opening. First accommodating part 3 and second accommodating part 4
is made of a plastic material or the like, and a label is attached to the rear end of the first accommodating portion 3 to indicate the information content of the optical disc 1 and the direction of the surface of the optical disc 1.

In addition, the external dimensions of the current 2 in the closed state are such that the length in the direction of insertion is larger than the length in the direction perpendicular to this, which prevents the current 2 from being inserted into the information processing device w5 in the wrong direction. It is prevented.

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. ing. 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. Further, an insertion detection sensor 37 is provided to detect insertion. Inside the housing 6, a plurality of upper and lower rollers 9a and 9b are arranged in order from the front to the rear for transporting the cassette 2 inserted into the insertion lower. When the cassette 2 is inserted or ejected, the rows 59a and gb are moved by a feeder mechanism (not shown) to the position shown by the imaginary line. Shirt 1~
2 is inserted into the insertion lower, rollers 9a, 9 are driven by a motor (not shown) of a loading mechanism (not shown).
b is rotationally driven, and the cassette 2 is conveyed inside by these rollers 9a and 9b. When the cassette 2 is transported inside, the locking mechanism is released, the first housing section 3 and the right half section 4 are opened, and the central section of the optical disc 1 stored in the cassette 2 is opened. be 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 1
2 is operated by the motor of the loading tam.

By means of a clamping mechanism (not shown), the turntable 1
The cap 12 and the turntable 10 sandwich the optical disc 1 placed on the turntable 10. The placement of the optical disc 1 on the turntable 10 is carried out by a placement detection sensor 5.
1 is detected. This turntable 1o 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 anti-vibration legs 16 having rubber.

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 is driven by the linear motor 20.
It moves back and forth along the .

Also, the optical disc 1 placed on the turntable 10
A cleaner 21 as a cleaning means for removing dust attached to the optical disc 1 is disposed on the lower surface side and 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.
The length of this cleaner 21 is the same as the width of the information storage layer of the optical disc 1. Further, as shown in FIG.
The top surface of the nut 21 is attached parallel to and in contact with the bottom surface of the optical disc 1.

Further, the cleaner 21 is attached so that its length direction is tilted by rotating the optical disk 1 clockwise in FIG. 3 with respect to the radial direction. 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 a screw. Therefore, the lever 22 is
By rotating the left half of FIG. 2 about 3, the cleaner 21 is brought into contact with and separated from the optical disc 1.

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. A spring 27 is stretched between the iron core 26 and the base end 22b of the lever 22, and when the cleaner 21 comes into contact with the optical disc 1 due to the tensile force of the spring 27, the cleaner 21 comes into contact with the optical disc 1. A pin 28 is provided at the tip of the movable core 26, and a compression spring 29 is compressed between the pin 28 and the solenoid 25.
The movable core 26 is constantly urged toward the base end 22b via the pin 28.

The base 13 on the rotation side of the cleaner 21 is provided with a locking portion 30, and a spring 31 is tensioned between the locking portion 30 and the base end portion 22b. The lever 22 is constantly pulled to the position shown by the imaginary line in FIG. Also, this spring 31
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 pulled toward the right in FIG. 2 against the biasing forces of the compression spring 29 and the springs 27 and 31. When the movable iron core 26 is attracted, the lever 22 is pulled by 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. Lever 22° Solenoid 25. The spring 27 is a pressure contact means 36
It consists of

Next, the operation of the optical disc 1, optical disc device 5, etc. having the above configuration will be explained.

When a cassette 2 containing an optical disk is inserted into the optical disk device 5 from the insertion lower, the feeder mechanism carries the cassette 2 inside and takes it into the interior.At the same time, the locking mechanism of the cassette 2 is released and the first storage section 3 and the second cassette 2 are separated from each other. The accommodating portion 4 of the optical disc 1 is 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 information on or reproduction from 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 instruction from the outside, current is applied to the solenoid 25, the compression spring 29 and the tension spring 27.
The movable iron core 26 is attracted against the biasing horn 31. When the movable iron core 26a is attracted, the lever 22 located at the imaginary line is pulled via the tension spring 27 and rotates clockwise in FIG. When the lever 22 rotates, the cleaner 21 attached to the tip of the lever 22 comes into contact with the lower surface of the optical disc 1 with its top surface parallel to the lower surface. 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 off by the cleaner 21. Further, as shown in FIG. 4, the dust wiped off by the cleaner 21 is removed by the optical disk due to the resultant force of the radial force received from the rotating optical disk 1 and the reaction force received from the cleaner 21 disposed at an angle. It is discharged outside of 1. Therefore, the dust wiped off by the cleaner 21 does not adhere to the optical disc 1 again and is completely wiped off. 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 the cleaner 21 comes into contact with the optical disc 1, since the lever 22 is pulled counterclockwise by the tension 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 iron core 26 is pushed by the biasing node j of the compression spring 29.
is pushed out to the left in FIG. 2, and the lever 22 is rotated counterclockwise in FIG. 2 by the tensile force of the tension 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 sliding contact of the cleaner 21.

On the other hand, remove the dust on the optical disc device 5 as described above (if there is no mechanism, disassemble the cassette 2 containing the optical disc 1 and use a record cleaner or similar tool to remove the dust attached to the optical disc 1). You'll have to wipe it off with something.

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.

In addition, when the carre 1~ is made into a type in which the second accommodating part 3 and the first accommodating part 4 are wide open to expose the entire optical disc 1, this optical disc device 1 is reversely used as the cleaner 21. It is also possible to have a structure in which the optical disc 1 is rotated and slid relative to the optical disc 1.

Further, the cassette 2 in which the optical disc 1 is stored is of a type in which the second accommodating part 3 and the first accommodating part 4 are opened to expose the central part of the optical disc 1, but the invention is not limited to this. As shown in FIG.
A window 33 is provided to expose a part of the window 33, and a shutter 34 for opening and closing the window 33 is attached to the window 33.
The force 1 of the mold to open and close the window 33 by sliding the
Good as a set.

Furthermore, although the optical disk device is used as an information processing device, the present invention is not limited to this, and the present invention is applicable to devices that require removal of (-1@) dust from the surface of the information storage medium, such as floppy disks, fixed Needless to say, the present invention can also be applied to devices using magnetic disks, optical cards, video disks, laser disks, and CDs.

[Effects of the Invention] As explained above, according to the present invention, the cleaning means is arranged to be inclined with respect to the radial direction of the rotating information storage medium, and the cleaning means is pressed against the information storage medium by the pressure contact means. By pressing the cleaning member against the information storage medium and removing the dust attached to it, the dust is discharged from the information storage medium by tilting the cleaning member, so that the dust wiped by the cleaning member does not adhere to the information storage medium again. There's nothing to do,
Wiped clean. 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 cross-sectional view taken along the line I [--I shown in FIG. 2, and FIG. 4 is an operational diagram showing a state in which dust attached to the information storage medium is discharged to the outside of the information storage medium. 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 1
1... Rotation drive means, 21... Cleaning means 36
... Engraving of drawings of pressure welding means (no changes in content) Engraving of drawings (with no changes in content) Figure 5 Procedural City Authorization (voluntary) April 8, 1986

Claims (2)

[Claims] (1) In an information processing device that reproduces information stored on a rotatable information storage medium, there is provided a cleaning means for removing dust attached to the surface of the information storage medium, and the cleaning means is pressed against the information storage medium. the cleaning means is brought into pressure contact with the information storage medium by the pressure contact means to remove dust attached to the surface of the information storage medium as the information storage medium rotates. Information processing equipment. (2) The information processing device according to claim 1, wherein the cleaning means is made of felt.