JPH02302978A - Disk cartridge - Google Patents

Abstract

PURPOSE:To minimize the damage of a recording medium and the generation of a static electricity, to remove and collect dusts to adhere on the recording medium and, simultaneously, to remove and collect the dusts to adhere in a cartridge to house the recording medium by bringing a cleaning member in contact with the recording medium with an elasticity when the rotating speed of the recording medium is in a low speed area and separating it from the recording medium with the work of an airflow when the speed exceeds the low speed area. CONSTITUTION:On the inner surface of the disk cartridge, a cleaning member 4 having the elasticity is provided, and a cleaning member 5 is arranged so as to be brought in contact with a recording medium 3 by the elasticity when the rotating speed of the recording medium 3 is in the low speed area and to be separated from the recording medium 3 by a floating force with the airflow when the rotating speed of the recording medium 3 exceeds the low speed area. Thus, the damage of the recording medium and the generation of the static electricity can be suppressed, the adhering dusts can be removed and collected, and the adhering dusts in the cartridge can be removed and collected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk cartridge that houses a recording medium such as an optical disk or a magnetic disk.

[Conventional technology]

Generally, a recording medium such as an optical disk or a removable magnetic disk is housed in a disk cartridge as shown in FIGS. 11 and 12. In addition,
FIGS. 11 and 12 are plan views of a disc cartridge for an optical disc, respectively.

FIG. Referring to FIG. 11 and FIG. 12, the disk cartridge basically consists of an upper plate 51. Lower plate 52, optical disc 53. It is composed of a shutter 54, and when the disk cartridge is inserted into the drive device, the shutter 54 moves in the direction of arrow F, and the shutter 54 opens.

With this type of disk cartridge, for example, when not in use, dust may enter the disk cartridge or the operator may leave the shutter open, causing finger wringer or dust to adhere to the surface of the recording medium. There is. Further, during use, since the shutter is forcibly opened, dust within the drive device may enter the disk cartridge and adhere to the surface of the recording medium, resulting in incomplete recording or reproduction of information. Conversely, if you insert a disk cartridge with dust or dirt inside, or a disk car 1 edge containing a dirty recording medium, into the drive unit, the disk cartridge or recording medium will be damaged. The dust that was attached is ii[! As the recording medium rotates, it may enter the inside of the drive device and contaminate the optical pickup inside the drive device, resulting in incomplete recording and reproduction of information.

As described above, the adhesion of dust and the like to the disk cartridge and the adhesion of dust and the like to the recording media housed in the disk car 1 to the storage often become obstacles to accurately recording and reproducing information. In order to prevent the adhesion of such dust, conventionally, for example, a nonwoven fabric disc liner is provided on the inner surface of the cartridge (jacket) of a flexible disc, so that it is always connected to the surface of the disc, regardless of whether the flexible disc is stopped or making one rotation. contact to clean the disk surface, or form an air flow path in the car 1 to ridge of the optical disk as disclosed in Japanese Utility Model Application No. 63-14.2073,
An air filter was provided in this air flow path.

[Problem to be solved by the invention]

However, in the case of flexible disk cars with a non-woven disk liner on the inner surface, the disk liner rubs against the disk surface while the disk is rotating, so such cars are not suitable for optical disks or magnetic disks. If this is applied, it may damage the optical surface of the optical disk or the magnetic surface of the magnetic disk, which is not preferable. Furthermore, static electricity may be generated on the recording medium due to friction, which may cause dust to adhere to the surface of the recording medium.

In addition, the optical disc cars 1 to 2, in which an air flow path is formed and an air filter is provided, are effective in removing and collecting dust adhering to the inside of the disc cartridge that houses the recording medium. It is not intended to remove or collect dust attached to recording media.

Therefore, in the conventional disk cars 1 to 5, dust attached to the inner surface of the disk cartridge is removed.

It was not designed to collect and also remove and collect 1 m of dust deposited on the surface of the distribution g body.

The present invention minimizes damage to the recording medium and generation of static electricity, and removes dust attached to the recording medium.

It is an object of the present invention to provide a disk cartridge capable of collecting and removing dust adhering to the inside of a car 1-1J housing a recording medium.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a disk cartridge for storing a recording medium, in which a cleaning member having elasticity is provided on the inner surface of the disk cartridge, and the cleaning member is configured to rotate at a rotational speed of the recording medium. When the rotational speed of the recording medium is in the low speed range, it comes into contact with the recording medium due to its elasticity, and when the rotational speed of the recording medium exceeds the low speed range, it is arranged so that it moves away from the recording medium by the action of airflow.
It is characterized by

(, f'1: for use) In the disk car 1 helical system configured as described above, when the rotational speed of the recording medium is in the low speed range, the cleaning member contacts the recording medium due to its elasticity, and the cleaning member contacts the recording medium due to its elasticity. Continuously removes and collects dust adhering to the surface of the recording medium.When the rotational speed of the recording medium exceeds a low speed range, the cleaning member cleans the recording medium from the recording medium by the action of the air flow accompanying the rotation of the recording medium. The recording medium is separated and is out of contact with the recording medium.

As a result, the ink member does not come into contact with the recording medium during high-speed rotation of the recording medium, so damage to the surface of the recording medium and generation of static electricity can be suppressed.

In addition, dust adhering to the inner surface of the disk cartridge can be peeled off by the air flow generated while the recording medium is rotating, and the dust that has been peeled off and included in the air flow is collected by the cleaning member. I can do it.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of an embodiment of a disk cartridge according to the present invention, and FIG. 2 is a sectional view taken along line A--A in FIG. 1. Referring to FIGS. 1 and 2, the disk car 1 helical structure of this embodiment includes an upper plate 1, a lower plate 2, and an upper plate I.
It has a rotating disk 3 disposed between the lower plate 2 and the lower plate 2. Note that the disk cartridge is provided with a shutter that opens when in use, and FIG. 1 shows the state in which the shutter, upper plate 1° disk 3 are removed.

A cleaning member 4 is attached to the inner surface of the lower plate 2 by adhesive or welding. The cleaning member 4 is composed of, for example, a disk liner whose main function is to clean the surface of the disk 3, an air filter whose main function is to collect dust in the air, a static elimination brush, etc., and has a predetermined elasticity. The cleaning member 4 is in contact with the substrate surface 3' of the disk 3 due to its own elasticity. Note that in FIGS. 1 and 2, reference numeral 5 indicates a bonded portion (welded portion).

In a disk cartridge with such a configuration, when it is inserted into the drive device and installed, the drive device drives the disk 3.
Rotate in the direction of arrow B. Along with this rotation, an air flow is generated on the surface of the disk 3 in substantially the same direction as the arrow B, and this air flow exerts an elastic force on the cleaning member 4, as shown in FIG. When the rotational speed of the 6-disk 3 that generates the floating blade in the direction C opposite to the direction C is in a low speed range, the speed of the airflow is also slow, so the floating blade is small compared to the elastic force of the cleaning member 4, and the cleaning member 4 is in contact with the surface of the disk 3 as shown in FIG. In this state, the cleaning member 4 continuously cleans the surface of the disk 3 by rotating the disk 3, and removes and collects dust attached to the surface of the disk 3. At this time, since the disk 3 is rotating at a low speed, damage to the surface of the disk 3 and generation of static electricity due to contact with the cleaning member 4 can be minimized.

In addition, the air flow generated as the disk 3 rotates removes dust adhering to the inside of the disk cartridge.
The peeled dust is collected by the cleaning member 4. In this way, the cleaning member 4 also functions as an air filter.

Next, when the rotational speed of the disk 3 exceeds the low speed range, the speed of the airflow increases, so the floating blade moves to the cleaning member 4.
The cleaning member 4 becomes larger than the elastic force of
As shown in Figure 3, move the disk 3 away from the surface of the disk 3.
does not come into contact with the surface. With this, disk 3
There is no risk of damage to the surface or generation of static electricity, and the cleaning member 4 no longer serves only as an air filter.

In this way, according to this embodiment, by providing the cleaning member 4 having a predetermined elastic force on the lower plate 2, damage to the disk and generation of static electricity are minimized, and dust adhering to the disk surface is removed. In addition to removing and collecting,
It is also possible to remove and collect dust adhering to the inside of the curl ridge.

Note that if the cleaning member 4 has insufficient elasticity,
In order to apply a predetermined elastic force to the cleaning member 4, the fourth
The biasing member 6 may be provided as shown in the figure. Further, in the above embodiment, the cleaning member 4 was provided only on the lower plate 2, but if the disc 3 is of double-sided recording type, the cleaning member 4' is also provided on the upper plate 1 as shown in FIG. A filter may be provided to remove and collect dust adhering to both surfaces of the disk 3.

Alternatively, the cleaning member 10 may be shaped as shown in FIGS. 6 and 7, and the cleaning member 10 may be adhered (welded) to the lower plate 2 at adhesive portions (welded portions) 11 and 12. Note that FIG. 7 is a sectional view taken along the line DD in FIG. 6. In such a configuration, an air flow is generated in the direction of arrow B by the rotation of the disk 3, and when the rotation speed of the disk 3 exceeds a low speed range, the cleaning member 10 is moved by the floating blades and pressure of the air flow as shown in FIG. It tilts in the direction of arrow B and moves away from the disk 3.

Further, as the cleaning member 4, as mentioned above,
Disc liners made of non-woven fabric, air filters that collect dust in the air, static eliminating brushes that remove static electricity, etc. can be used. Since it has both a cleaning function and an air filter function, it is possible to use these functions alone, and furthermore, as shown in FIG. 9, they can also be used together. Furthermore, as shown in FIG. 10, it is also possible to obtain a composite cleaning effect by adding a static elimination brush to the disc liner and air filter, and using a plurality of them together.

〔Effect of the invention〕

As explained above, according to the present invention, the inner surface of the disk cartridge is exposed to the bullet. A cleaning member with a special name is provided, and when the rotational speed of the recording medium is in a low speed range, it comes into contact with the recording medium due to its elasticity, and when the rotational speed of the recording medium exceeds the low speed range, it is separated from the recording medium by a floating blade caused by an air flow. The cleaning member is arranged to minimize damage to the recording medium and the generation of static electricity, remove and collect dust attached to the recording medium, and remove the dust from the recording medium.
1.Remove dust that has adhered to the inside of the car 1~ridge that stores the 1 unit.
It can be collected.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of a disk cartridge according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1,
FIG. 3 is a diagram illustrating the position of the cleaning member when the disk rotates at high speed in FIGS. 1 and 2;
Fig. 4 shows a state in which the biasing member is not provided when the elasticity of the cleaning member is insufficient, Fig. 5 shows a state in which the cleaning member is provided on both sides of the disk, and Fig. 6 shows the state in which the biasing member is not provided when the elasticity of the cleaning member is insufficient.
FIG. 7 is a sectional view taken along line D-D in FIG. 6, and FIG. 8 is a plan view of a modified example of the figure, and FIG. 8 explains the position of the cleaning member when the disk rotates at high speed in FIGS. 6 and 7. Figures 9 and 10 are plan views that do not show the state in which various cleaning members are used together, Figure 11 is a plan view of a conventional general disk cartridge, and Figure 12 is the disk of Figure 11. FIG. 3 is a cross-sectional view of the cartridge. 1... Upper plate, 2... Lower plate, 3... Disc, 4.
4', 10...Cleaning member, 5.11.12
...adhesive part (welded part), 6...biasing member patent applicant Ricoh Co., Ltd. - -13=

Claims (1)

[Claims] In a disk cartridge that stores a recording medium, an elastic cleaning member is provided on the inner surface of the disk cartridge, and the cleaning member comes into contact with the recording medium due to its elasticity when the rotational speed of the recording medium is in a low speed range. A disk cartridge characterized in that the disk cartridge is arranged so as to be separated from the recording medium by the action of air flow when the rotational speed of the recording medium exceeds a low speed range.