JP2000222852A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively collect fine dust particles by a method wherein a dust collecting sheet used to collect the dust particles which are contained in an air current generated due to the rotation of a disklike recording medium is arranged and installed, so as to be separated from the disklike recording medium, in a position facing the main face of the disklike recording medium on the inner surface side of a cartridge body. SOLUTION: The thickness of a dust collecting sheet 5 is adjusted so as not to come into contact with a disk 2. The dust collecting sheet is arranged and installed, so as to be separated from the disk 2, in a position facing the main face of the disk 2 on the inner surface side of a lower half 9. In addition, the dust collecting sheet 5 is formed in a disk shape whose outside diameter is nearly equal to that of the disk 2, and a cutout part 5a whose shape is nearly identical to that of an opening part 9c is formed. As the dust collecting sheet 5, a resin sheet such as a polyimide sheet or the like or a nonwoven fabric such as a nylon fabric, a polyester fabric, a rayon fabric or the like which is coated with various adhesives such as, e.g. a pressure sensitive adhesive or the like is used. A main face 5b on the side facing the main face of the disk 2 is coated with an adhesive material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge in which a disk-shaped recording medium such as a magnetic disk or a magneto-optical disk used for an information processing apparatus or the like is rotatably housed. The invention relates to a disk cartridge provided with means.

[0002]

2. Description of the Related Art A disk cartridge is a disk-shaped recording medium (hereinafter, referred to as a disk) such as a magnetic disk or a magneto-optical disk on which information signals and the like are recorded and / or reproduced (hereinafter, referred to as recording / reproducing). It is rotatably stored in the main body. The disk cartridge is detachably used in a recording / reproducing device such as a disk drive device provided as an external storage device in an information processing device such as a computer.

[0003] If a signal reading surface of a disk such as a magnetic disk or a magneto-optical disk is scratched or becomes dirty with dust or fingerprints, it becomes difficult to perform normal recording and reproduction of a recording signal. Therefore, by storing the disk in the cartridge body, the disk cartridge can be used in a detachable manner with respect to the recording / reproducing apparatus. Was prevented from adhering.

[0004] In addition, the conventional disk cartridge has an antistatic treatment on the surface of the disk and the cartridge body, and has a filter means for collecting dust in the cartridge body to prevent dust from adhering to the signal reading surface. Preventing.

[0005]

In the fields of magnetic recording, magneto-optical recording, etc., higher recording densities are being promoted as recording / reproducing apparatuses are made smaller and larger in capacity.
As a result, the physical size of a recording signal to be recorded on a disc is ever decreasing. It has become increasingly important for recording / reproducing apparatuses to accurately record / reproduce minute recording signals to / from a disk.

In a recording / reproducing apparatus, as the recording signal becomes smaller, the tolerance for the size of dust or the like adhered to the signal reading surface of the disk becomes smaller. Becomes difficult. In other words, in the recording / reproducing apparatus, by increasing the recording density, the recording / reproducing error can be caused by finer dust and the like as compared with dust and the like which has conventionally been targeted for preventing adhesion to the signal reading surface. Is caused.

[0007] In the conventional disk cartridge, since the above-mentioned fine dust is not intended to prevent the fine dust from adhering to the signal reading surface, the fine dust cannot be sufficiently removed from the cartridge body. Was. Therefore, it has been difficult for the conventional disk cartridge to accurately and stably perform a recording / reproducing operation corresponding to a high recording density.

Therefore, the present invention provides a cartridge
By arranging the dust collecting sheet for collecting dust at a position facing the main surface of the disc-shaped recording medium and away from the disc-shaped recording medium, fine dust entering the cartridge body can be effectively removed. It is an object of the present invention to provide a disk cartridge that collects data on a disk. In addition, the present invention provides a disk cartridge that effectively collects fine dust that has entered the cartridge body by forming the cartridge body from a chargeable material and performing antistatic treatment on a portion facing outward. The purpose is to provide.

[0009]

In order to achieve the above-mentioned object, a disk cartridge according to the present invention is used detachably with respect to a disk drive, and comprises a disk-shaped recording medium and a disk-shaped recording medium. And a cartridge body for storage. And in the cartridge body,
At a position facing the main surface of the disc-shaped recording medium on its inner surface side, a dust collection sheet that collects dust contained in an air flow generated by rotation of the disc-shaped recording medium is separated from the disc-shaped recording medium. It is arranged.

In the disk cartridge constructed as described above, the dust collecting sheet is disposed at a position facing the main surface of the disk-shaped recording medium and is spaced apart from the disk-shaped recording medium, so that fine dust can be obtained. Can be effectively collected.

A disk cartridge according to the present invention is detachably used in a disk drive device, and includes a disk-shaped recording medium and a cartridge body for storing the disk-shaped recording medium. The cartridge body is formed of a chargeable material, and has an antistatic treatment applied to a portion facing outward.

In the disk cartridge constructed as described above, since the cartridge body is formed of a chargeable material, fine dust can be effectively collected on the inner surface side where the disk-shaped recording medium is stored. Can be.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. Hereinafter, a disk cartridge 1 as shown in FIGS. 1 and 2 will be described. The disk cartridge 1 includes a disk 2, a cartridge body 3 for rotatably storing the disk 2, a shutter member 4, and a dust collecting sheet 5, and is detachably used in a disk drive device (not shown). Can be In the following description of the disk cartridge 1, the loading side of the disk drive device is referred to as the leading end side.

The disk 2 is composed of a disk substrate 6 and a metal hub 7 attached to the center of the disk substrate 6 with its axis aligned. The disk substrate 6
It is formed in a substantially disk shape with a signal recording layer, and recording and reproduction of a recording signal is performed on the signal recording layer by a disk drive device. In the following description, the disk 2 is a so-called double-sided recording disk in which both main surfaces of the disk substrate 6 are signal recording surfaces. However, the present invention may be a so-called single-sided recording disk in which one main surface of the disk substrate 6 is a signal recording surface.

Further, the present invention is not limited to the recording / reproducing method for recording signals on the disk 2. The disk 2 is formed, for example, with a magnetic recording layer as a signal recording layer, records a recording signal by applying a magnetic field to the magnetic recording layer, and reads a change in the magnetic field recorded on the magnetic recording layer. Thus, the recording signal may be reproduced by a so-called magnetic recording method for reproducing the recording signal.

The disk 2 is formed with a magneto-optical recording layer as a signal recording layer, and records a recording signal by irradiating the magneto-optical recording layer with light and applying a magnetic field. The recording signal may be reproduced by reading the return light of the light applied to the recording layer, that is, reproducing the recording signal by a so-called magneto-optical recording method.

The disc 2 is formed with a signal recording layer formed of a phase change material, and irradiates the signal recording layer with light having different intensities to perform recording and reproduction of a recording signal. A recording signal may be recorded and reproduced by a recording method.

The disk 2 is formed by forming pits, which are physical changes in shape, in a signal recording layer, and reproduces a recording signal by reading the return light of light applied to the pits. It may be a dedicated optical disk.

The cartridge body 3 is formed by combining an upper half 8 and a lower half 9 formed of a synthetic resin such as an ABS resin, for example, and has a generally thin box shape. The upper half 8 and the lower half 9 are formed in a substantially rectangular shallow dish shape by forming the outer peripheral walls 8b, 9b integrally from the main surfaces 8a, 9a, respectively.

The upper half 8 and the lower half 9 have arc-shaped disk storage vertical walls (not shown) which form a space for storing the disk 2 at inner corners thereof. . The disk storage upright wall is formed integrally from the upper half 8 and the lower half 9 so as to be integrally formed, and is formed so as to surround the outer peripheral portion of the disk 2. Thus, in the disk cartridge 1, a disk storage space is formed inside the disk storage upright wall, and the disk 2 is stored in the disk storage space so as to be rotatable without displacement. I have.

The upper half 8 and the lower half 9 have openings 8c and 9c, respectively, from the center toward the tip. The openings 8c and 9c are respectively
A chucking opening having a diameter slightly larger than that of the hub 7 and a recording / reproducing opening which is provided to be continuous with the chucking opening and opens toward the tip end in the radial direction of the disk 2. Be composed.

The upper half 8 and the lower half 9 are located at the center on the inner surface side, that is, in the vicinity of the chucking openings of the openings 8c, 9c, and are formed integrally with the disk support for rising. Standing walls 8d and 9d are formed. The disk supporting vertical walls 8d and 9d are formed so as to face each other with the disk substrate 6 interposed therebetween. The disk supporting vertical walls 8d and 9d are formed at a height having a slight gap with respect to the disk substrate 6 so that the disk 2 is rotatable inside the cartridge body 3. As shown in FIG. 2, one of the disk supporting upright walls 8d and 9d supports the disk 2 by abutting the disk substrate 6 when not in use, and the main surface of the disk 2 comes in contact with other members. Is preventing that. In the disk cartridge 1, no recording signal is recorded at the position where the disk supporting vertical walls 8d and 9d of the disk substrate 6 abut.

Further, the upper half 8 and the lower half 9 include
Main surface 8 on the front end side in which recording / reproducing openings are respectively formed
A shutter sliding recess 8e, 9e having a height substantially equal to the thickness of the shutter member 4 is formed on the shutter members 4a, 9a.

The shutter member 4 is formed into a substantially U-shape by, for example, pressing a thin metal plate, and has openings 8 c formed in the upper half 8 and the lower half 9 with the front side of the cartridge body 3 interposed therebetween. , 9c.
The shutter member 4 is formed to have a width sufficient to cover the openings 8c and 9c, and as shown in FIGS.
The openings 8c and 9c can be completely closed.

When the disk cartridge 1 is not in use, the openings 8c and 9c are completely closed by the shutter member, so that the signal reading surface of the disk 2 is scratched or stains such as fingerprints adhere. Can be prevented.

The shutter member 4 is provided with a shutter sliding recess 8 along the side surface on the front end side of the cartridge body 3.
e and 9e are slidable. Then, when the disk cartridge 1 is loaded in the disk drive device, the shutter member, as shown by the arrow A in FIG.
The shutter slides in the recesses 8e and 9e, and slides through the openings 8c and
9c is opened.

As shown in FIG. 2, the thickness of the dust collecting sheet 5 is adjusted so that the dust collecting sheet 5 does not come into contact with the disk 2, and the dust collecting sheet 5 is positioned on the inner surface of the lower half 9 so as to face the main surface of the disk 2. It is arranged apart from the disk 2. As shown in FIG. 3, the dust collecting sheet 5 is formed in a disk shape having an outer diameter substantially equal to that of the disk 2, and has an opening 9.
A notch 5a having substantially the same shape as c is formed. Further, the dust collecting sheet 5 is formed by applying an adhesive material to the main surface 5b on the side facing the main surface of the disk 2.

The dust collecting sheet 5 is made of, for example, a resin sheet such as polyimide coated with various adhesives such as a pressure-sensitive adhesive,
Any non-woven fabric such as nylon, polyester, and rayon may be used. Further, the dust collecting sheet 5 may be a gel-like sheet having an appropriate hardness.

The disk cartridge 1 configured as described above is loaded into a disk drive device when recording and reproducing recording signals on the disk 2. At this time, the shutter member 4 of the disk cartridge 1 is first opened by the shutter opening means (not shown) provided in the disk drive device, as shown by the arrow C in FIG.

Next, the turntable 20 connected to the rotary drive mechanism of the disk drive device enters the inside of the cartridge body 3 from the chucking opening of the opening 9c, and the opening 8c and the opening 9c are opened. The recording / reproducing head 21 of the disk drive enters the cartridge body 3 from the recording / reproducing opening.

As shown in FIG. 5, the turntable 20 is attracted and fixed (chucking) to the hub 7 of the disk 2 and is driven to rotate by a rotation driving mechanism. As a result, the disk 2 is driven to rotate clockwise as viewed from the upper half 8 as shown by an arrow D in FIG.

The recording / reproducing head 21 is movable in the radial direction of the disk 2 along a recording / reproducing opening provided in the cartridge body 3 as shown by an arrow E in FIG. The recording / reproducing head 21 performs recording / reproducing of a recording signal on / from a signal recording layer of the disk 2 which is driven to rotate at a predetermined rotation speed. The recording / reproducing head 21 is
The configuration is different depending on the recording / reproducing method performed on the optical disc 2.

For example, when recording / reproducing is performed on the disk 2 by a magnetic recording system, the recording / reproducing head 21 is provided with at least one or more magnetic heads. Then, the magnetic head applies a magnetic field to the signal recording layer of the disk 2 and reads / writes a change in the magnetic field recorded on the signal recording layer by the magnetic head, thereby recording / reproducing a recording signal.

When recording / reproducing is performed on the disk 2 by the magneto-optical recording method, the recording / reproducing head 21 includes at least one or more optical heads and a magnetic head. Then, a specific position on the disk 2 is irradiated with light by the optical head to raise the temperature of the signal recording layer, and a magnetic field is applied by the magnetic head to record a recording signal on the signal recording layer. In addition, the optical head irradiates the signal recording layer with light, and detects the reflected light that has returned to reproduce the recorded signal.

It should be noted that the present invention is not limited to the recording / reproducing method performed on the disc 2,
Detailed description of the recording / reproducing operation of the disk drive device will be omitted.

In the disk drive device, when the signal reading surface of the disk 2 is scratched, or when dirt such as dust or fingerprints is attached, the light emitted by the recording / reproducing head 21 or the light applied to the disk 2 is applied. The magnetic field may not reach the signal recording layer correctly, or the magnetic head and / or the optical head of the recording / reproducing head 21 may be damaged. Therefore, in the disk cartridge 1, as described above, the provision of the shutter member 4 prevents the signal reading surface of the disk 2 from being scratched or stained by fingerprints or the like.

However, it is necessary to open the shutter member 4 when the disk cartridge 1 is loaded in the disk drive and recording and reproduction are performed. At this time, in the disk cartridge 1, as shown in FIG. 6, there is a possibility that dust 30 contained in the air may enter the inside of the cartridge body 3 and adhere to the disk substrate 6.

Therefore, the disc cartridge 1 can enter the inside of the cartridge body 3 and collect dust 30 adhering to the disc substrate 6 by the dust collecting sheet 5 disposed on the lower half 9. It has a configuration. Hereinafter, a process of collecting the dust 30 will be described.

In the disk cartridge 1, when recording and reproduction are performed, the disk 2 is driven to rotate as described above. As a result, an air flow that rotates and rotates with the rotation of the disk 2 is generated inside the cartridge body 3. The dust 30 adhering to the disk substrate 6 is
By the wind pressure due to the air flow or the centrifugal force of the rotating disk 2, as shown in FIG. Further, the dust 30 that has entered the cartridge body 3 through the openings 8c and 9c also scatters on the airflow generated inside the cartridge body 3.

The dust 30 is transferred to the cartridge body 3
Of the dust collecting sheet 5 arranged in the lower half 9 while flying inside the inside of the lower half 9. The dust collection sheet 5 collects the dust 30 that has come into contact with the main surface 5b because it has adhesiveness.

In the disk cartridge 1, as described above, the dust collecting sheet 5 collects the dust 30, so that the inside of the cartridge main body 3 can be kept clean. Therefore, the disk cartridge 1 can perform reliable and stable recording and reproduction on the disk 2 by the disk drive device.

In the disk cartridge 1, the dust collecting sheet 5 has an adhesive property,
The collected dust 30 does not separate from the dust collection sheet 5 again, so that reattachment to the disk substrate 6 can be prevented. Therefore, in the disk cartridge 1, the inside of the cartridge main body 3 can be always kept clean.

Further, since the dust collecting sheet 5 is disposed in a substantially disk shape at a position facing the main surface of the disk 2, the dust 30 included in the airflow that rotates with the disk 2 Can be effectively and efficiently collected in a large area.

Since the disc cartridge 1 is configured to collect the dust 30 by the adhesive property of the dust collecting sheet 5, the filter means provided in the conventional disc cartridge is used as a collection target. Even finer dust can be effectively collected as compared with dust that has been generated. Accordingly, the disk cartridge 1 can prevent a recording / reproducing error due to minute dust even when a recording signal recorded on the disk 2 is miniaturized in response to an increase in recording density. Thus, the reliability during recording and reproduction can be improved.

Further, in the disc cartridge 1, dust adhering to the disc substrate 6 can be collected without the dust collecting sheet 5 coming into contact with the disc 2. Therefore, the disc cartridge 1 can reliably and stably record and reproduce the recording signal without damaging the signal reading surface of the disc 2.

In the disk cartridge 1, it is desirable that the main surface of the disk substrate 6 be subjected to an antistatic treatment. As a result, in the disc cartridge 1, the dust 30
However, the dust collecting sheet 5 can be easily separated from the disk substrate 6, and the dust collecting effect of the dust collecting sheet 5 can be improved.

FIG. 8 shows the disc cartridge 1
As shown in FIG. 9 and FIG. 9, an air flow control unit 40 may be provided. For example, the airflow control unit 40 is formed in a substantially flat plate shape using the same or equivalent material as the lower half 9, and at least one airflow control unit is radially provided from the disk supporting upright wall 9 d toward the outer peripheral portion of the disk 2. . In addition, the air flow control unit 4
0 is formed at a height that does not contact the disk 2. Note that FIG. 8 illustrates an example in which three airflow control units 40 are provided.

The disk cartridge 1 is provided with the airflow control unit 40, so that when the disk 2 is rotationally driven by the disk drive, the airflow in the cartridge body 3 can be disturbed. As a result, the dust 30 adhering to the disk substrate 6 receives a large wind pressure due to the turbulence generated in the air flow, and is easily separated from the disk substrate 6. Therefore, in the disk cartridge 1, the dust collecting effect of the dust collecting sheet 5 can be improved by disposing the airflow control unit 40.

As shown in FIG. 10, the air flow control section 40 may be provided with a predetermined curvature, for example, so as to spiral in the rotation direction of the disk 2. This allows
The air flow in the cartridge body 3 is disturbed by the air flow control unit 40 and flows so as to be collected by the air flow control unit 40 to the outer edge of the disk storage space. In this case, it is desirable to dispose the filter means 41 in the disk cartridge 1 at a position where the airflow is collected, that is, near the airflow control unit 40 at the outer edge of the disk storage space.

The filter means 41 is made of, for example, a material having the same adhesiveness as the dust collecting sheet 5 or a nonwoven fabric so as to be substantially perpendicular to the main surface 9b of the lower half 9 or the main surface of the lower half 9 9b is arranged so as to be inclined at a predetermined angle with respect to 9b. Thereby, the disc cartridge 1 can collect the dust 30 in the cartridge main body 3 by the dust collecting sheet 5, and
By providing the filter unit at a position where the airflow is collected by the airflow control unit 40, the dust 30 can be collected more effectively.

In the above description, the dust collecting sheet 5, the air flow control unit 40, and the filter means 41 are respectively provided on the lower half 9 side. However, the present invention is limited to such a configuration. Not something. In the disk cartridge 1, the dust collection sheet 5, the airflow control unit 40, and the filter unit 41 may be provided on the upper half 8 side, or provided on both the upper half 8 side and the lower half 9 side. May be. In the disk cartridge 1, the dust collecting effect can be improved by disposing the dust collecting sheet 5, the air flow control unit 40, and the filter means 41 on both the upper half 8 side and the lower half 9 side.

Although the dust collecting sheet 5 collects the dust 30 by the adhesive property of the main surface 5b, the present invention is not limited to this configuration. The dust collecting sheet 5 may be formed of, for example, a material having a charging property, and may be configured to collect the dust 30 by electrostatic force. Thereby, the dust collecting sheet 5 can obtain the same dust collecting effect as in the case where the dust collecting sheet 5 has adhesiveness.

In the disk cartridge 1, the cartridge body 3 is formed of a material having a charging property.
A configuration without the dust collecting sheet 5 may be adopted. Accordingly, the disc cartridge 1 has the same effect as the dust collecting sheet 5 when the inner surface of the cartridge main body 3 that houses the disc 2 is formed of the above-described chargeable material. The effect can be obtained.

In this case, specifically, for example, the cartridge body 3 may be formed of a resin material such as an ABS resin, polystyrene, or polycarbonate. In addition, the cartridge body 3 can be positively imparted with chargeability by attaching a sheet formed of a material having a large surface resistance value such as styrene resin, polyethylene, and ethyl cellulose.

In this case, the cartridge body 3
It is desirable to perform antistatic treatment on the outer surface side. Thereby, it is possible to prevent dust contained in the air from adhering to the outer surface side of the cartridge body 3. As the antistatic treatment, for example, an antistatic agent is applied to the outer surface side of the cartridge body 3 or fine particles of a conductive material such as Ag, Cu, C are mixed into the resin on the outer surface side of the cartridge body 3. Good. Alternatively, the cartridge body 3 may be formed of a conductive resin, and a sheet formed of a material having a large surface resistance as described above may be attached to the inner surface of the cartridge body 3. In addition, 2
Using a color molding technique, the outer surface of the cartridge body 3 may be formed of a conductive resin, and the inner surface of the cartridge body 3 may be formed of a non-conductive resin.

In the above description, the disk cartridge 1 is configured such that the disk 2 is a double-sided recording type disk, and the upper half 8 and the lower half 9 have openings 8c, 9c, respectively. An opening for allowing the turntable 20 and the recording / reproducing head 21 of the drive device to enter the cartridge body 3 may be provided in at least one of the upper half 8 and the lower half 9.

In the above description, the disk 2
Is composed of a disk substrate 6 and a hub 7. For example, like a so-called CD (Compact Disc),
The disk substrate 6 may have a center hole formed in the center thereof and may be configured without the hub 7. In this case, the turntable 20 of the disk drive device is configured to chuck not on the hub 7 but on the center hole.

[0058]

As described above, in the disk cartridge according to the present invention, the dust collecting sheet for collecting the dust contained in the air flow generated by the rotation of the disk-shaped recording medium is provided on the inner surface side of the cartridge body. It is arranged at a position facing the main surface of the disc-shaped recording medium, away from the disc-shaped recording medium. Thus, the disk cartridge can effectively and efficiently collect fine dust that has entered the inside of the cartridge body. Therefore, the disc cartridge can reliably and stably perform recording and reproduction on a disc whose recording signal is miniaturized in response to an increase in recording density. Further, since the disc cartridge collects dust without the dust collecting sheet coming into contact with the disc, the reliability at the time of recording and reproduction can be improved. Further, since the disk cartridge has a high dust collecting effect, it is possible to perform reliable recording and reproduction even in a bad environment such as outdoors.

Further, in the disk cartridge according to the present invention, the cartridge body is formed of a chargeable material, and a portion facing the outside of the cartridge body is subjected to an antistatic treatment. Thus, the disk cartridge can effectively and efficiently collect fine dust that has entered the inside of the cartridge body. Therefore, the disc cartridge can reliably and stably perform recording and reproduction on a disc whose recording signal is miniaturized in response to an increase in recording density. Further, since the disc cartridge collects dust without the dust collecting sheet coming into contact with the disc, the reliability at the time of recording and reproduction can be improved. Further, since the disk cartridge has a high dust collecting effect, it is possible to perform reliable recording and reproduction even in a bad environment such as outdoors.

[Brief description of the drawings]

FIG. 1 is a plan view showing a disk cartridge according to the present invention.

FIG. 2 is a view B of FIG. 1 showing the disk cartridge;
It is -B sectional drawing.

FIG. 3 is a schematic plan view showing a lower half of the disk cartridge.

FIG. 4 is a plan view of the disc cartridge during recording and reproduction.

FIG. 5 is a sectional view taken along line FF in FIG. 4 showing recording and reproduction of the disk cartridge.

FIG. 6 is an enlarged sectional view of a main part when the disc cartridge is not used.

FIG. 7 is an enlarged sectional view of a main part of the disc cartridge during recording and reproduction.

FIG. 8 is a schematic plan view showing the lower half of another disk cartridge according to the present invention.

FIG. 9 is a sectional view taken along the line GG in FIG. 8 showing recording and reproduction of the disk cartridge.

FIG. 10 is a schematic plan view showing a lower half of still another disk cartridge according to the present invention.

[Explanation of symbols]

1 disk cartridge, 2 disks, 3 cartridge body, 4 shutter member, 5 dust collection sheet, 8
Upper half, 9 Lower half

Claims (6)

[Claims] 1. A disk cartridge which is detachably used in a disk drive device and comprises a disk-shaped recording medium and a cartridge body for accommodating the disk-shaped recording medium, wherein the cartridge body has an inner surface. At a position facing the main surface of the disc-shaped recording medium, a dust-collecting sheet for collecting dust contained in an air flow generated by rotation of the disc-shaped recording medium is disposed separately from the disc-shaped recording medium. A disk cartridge characterized in that: 2. The disk cartridge according to claim 1, wherein the dust collecting sheet is an adhesive sheet having an adhesive property. 3. The disk cartridge according to claim 1, wherein the dust collecting sheet is a charged sheet having a charging property. 4. The cartridge main body has a height on its inner surface that does not contact the disk-shaped recording medium, and is formed radially from a central portion of the cartridge main body.
2. The disk cartridge according to claim 1, further comprising an air flow control unit that controls an air flow generated inside the cartridge body. 5. The air flow control section according to claim 1, wherein the air flow in the cartridge body is concentrated on a predetermined portion, and a filter means for collecting dust contained in the air flow is provided.
5. The disk cartridge according to claim 4, wherein said disk cartridge is provided at said site. 6. A disk cartridge which is detachably used in a disk drive device and comprises a disk-shaped recording medium and a cartridge body for accommodating the disk-shaped recording medium, wherein the cartridge body is formed of a chargeable material. A disk cartridge characterized in that an antistatic treatment is applied to a portion facing outward.