JPH04103385U - optical disk cassette - Google Patents

Abstract

(57) [Summary] [Purpose] To clean the recording surface of an optical disc housed in a cassette case with a simple structure, and to easily house each component that makes up the cleaning mechanism inside the cassette case. In addition, the cleaning member acts as a brake for the optical disc when the optical disc is not in use. [Structure] The part facing the recording surface 9a of the optical disc 8 housed inside the cassette case 2 is attached to one end of the support member 14, which is movable in the thickness direction of the optical disc 8, at one corner of the cassette case 2. A cleaning member 18 is attached to a portion of the support member 14 facing the recording surface 9a, and a coil spring 20 is attached so that the cleaning member 18 that biases the support member 14 comes into contact with the optical disk 8. will be established.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is an optical disc in which an optical disc is rotatably housed inside a cassette case. Regarding disc cassettes, for details, see cleaning of the recording surface of optical discs. It is easy to clean and can be cleaned when not in use. The cleaning member acts as a brake on the optical disc and also protects the optical disc. A cleaning mechanism for cleaning academic discs is simplified, and , each component constituting the cleaning mechanism is easily housed in the cassette case. The objective is to provide an optical disc cassette that can

0002

[Conventional technology]

To record and/or read signals on an optical disc, a beam spot is used on the recording surface. Since this is done by irradiating the optical disc with a light beam, the recording surface of the optical disc is free of dust, etc. There is a need to.

0003 For this purpose, optical discs are stored in a nearly sealed cassette case. There is a Suka set.

0004 Such an optical disc cassette has a shutter provided in its cassette case to block light. When the disc cassette is installed in the disc drive device, the above shutter is closed. opened to allow recording and/or reading of signals on the optical disc .

[0005] By the way, with such optical disc cassettes, dust may accumulate inside the cassette case. On the other hand, once infiltrated, it is difficult for dust to escape to the outside. Therefore, various cleaners are used to remove dust, etc. that has entered and adhered to the optical disc surface. A mechanism is being considered.

[0006] For example, as an optical disc cassette equipped with a cleaning mechanism, There is one described in No. 211384.

[0007] This optical disc cassette is located in the center of the cassette case and on one side of the cassette case. A brush fixed to the tip of a leaf spring-like support member provided between the center part of the edge is provided.

[0008] The width of the support member is approximately twice the length, and the width direction is at the center of the cassette case. The proximal end of the cassette should be oriented so that it is parallel to the line that connects It is fixed to the inside surface of the upper half of the cut case, and a brush is attached to the tip of the brush. Fixed across the entire width.

[0009] Then, the pressing member provided on the disk drive unit presses the hole in the cassette case. When the support member is pressed through the brush, the brush moves downward and comes into contact with the optical disc. In this state, rotate the optical disc to perform cleaning. Ru.

0010

[Problem that the idea aims to solve]

However, in the optical disc cassette mentioned above, the brush is not used for cleaning. and serves no other function. Also, brushes and All of the supporting members that support this are the upper half of the cassette case and the optical disc. Because it is located in a narrow gap between the First, there is the problem of high costs.

[0011] Also, if the spring constant of the support member is too low, the brush will touch the optical disc surface due to its own weight. It has to be strengthened to some extent because it will come into contact with the product, but it will still deteriorate over time. The support member has become sagging and the brush is not touching the optical disc even though it is not in the cleaning state. There is a problem that it comes into contact with the

0012 Furthermore, when pressing the support member with the pressing member of the disk drive device, the If the pressing force is too low, the brush will not come into contact with the disc surface, so it will It is necessary to apply pressure, but if the pressure is too strong, it may cause the brush to touch the optical disc. The contact pressure will impede the rotation of the optical disc, and therefore the pressing member The setting of the pressing force of the supporting member is delicate, and the design of the mechanism on the disk drive device side The problem was that it was difficult.

[0013]

[Means to solve the problem]

Therefore, in order to solve the above problems, the optical disc cassette of the present invention is a flat type optical disc cassette. An optical disc housed inside a thin box-shaped cassette case with an approximately square shape. extends in the radial direction of the cassette case and has one end located at one corner of the cassette case. The part facing the recording surface of the optical disc can move freely in the thickness direction of the optical disc. A supported support member and a portion of the support member that faces the recording surface of the optical disc are attached. The attached cleaning member and the supporting member are pressed to remove the cleaning member from the optical a cassette case of the support member; The corner end of is supported by the cassette case, and the part located at the corner is the pressed part, and the pressed part is connected to a release means provided in the disk drive device. The cleaning member is separated from the optical disc by applying more pressure. It is.

[0014]

[Effect]

Therefore, according to the optical disc cassette of the present invention, the optical disc can be cleaned. Part of the cleaning mechanism for cleaning, especially the support member that supports the cleaning member The fulcrum part and the pressed part are placed in the corner of the cassette case, saving space. These parts can be arranged with a relatively large margin, so the dimensions of each part can be The accuracy does not need to be so high, and the cost can be reduced.

[0015] Additionally, the cleaning member is released by the operation of the release means on the disk drive device side. Since the cleaning material is placed away from the optical disc, the cleaning material cannot be applied to the optical disc. If you select the spring constant of the springing means for contact, the disk drive device can release the The pushing force of the means only needs to be strong enough to resist the above-mentioned resilient means, and the disk drive It is easier to design the release means of the device, and the elastic force of the trigger means is reduced over time. Even if it weakens, it will only cause insufficient cleaning and may interfere with the rotation of the optical disc. Never.

[0016] Moreover, when not in use, the cleaning member is adapted to the elastic force of the elastic means. The brake member against the optical disc is pressed against the optical disc with a certain degree of force. This means that the means for cleaning optical discs is This also serves as a means to prevent the school disc from rattling inside the cassette case. Ru.

[0017]

【Example】

The details of the optical disc cassette of the present invention are described below according to the embodiment shown in the attached drawings. I will explain.

[0018] The embodiment shown in the drawings is an example in which the present invention is applied to a magneto-optical disk cassette 1. It is.

[0019] 2 is the cassette case of the magneto-optical disk cassette 1, which includes the upper half 3 and the lower half. By integrally joining the frame 4, it is relatively thin and has a substantially square planar shape. It is shaped like a box.

[0020] Then, a shallow Shutter arrangement recesses 5, 5 (only the recesses formed in the upper half 3 are shown in the drawing) There is. ) is formed, and the shutter placement recesses 5, 5 are located at the right rear corner of the recessed portions 5, 5. The corner is located approximately in the center of the cassette case 2, and the front left corner is located near the center of the cassette case 2. It is located at the front left corner of case 2 and has a substantially rectangular shape.

[0021] In addition, the direction toward the upper left in Fig. 2 is the front side, and the direction toward the lower right is the rear side. Ru. Also, in the figure, the direction toward the lower left is the left side, and the direction toward the upper right is the right side. shall be. In the following description, when directions are indicated, this direction will be used.

[0022] Furthermore, a window 6 is provided in approximately half the area on the right edge side of the shutter arrangement recesses 5, 5. 6 is formed, and parts 6a, 6a of these windows 6, 6 (hereinafter referred to as "turntables") are formed. "Insertion part". ) is located approximately in the center of the cassette case 2 and is approximately circular in shape. The remaining parts 6b, 6b (hereinafter referred to as the "head insertion part") are the front and rear parts. It has a roughly rectangular shape that is long in the direction.

[0023] 7 is a shutter made of sheet metal material bent into a substantially U-shape, and the shutters are opposite to each other. The two facing parts 7a, 7a are about one size larger than the windows 6, 6, and these two parts The portions 7a, 7a are positioned so as to face the shutter placement recesses 5, 5, respectively. It is slidably supported by the cassette case 2 when placed, and its movement is shown in Figure 1. The closed position where the windows 6, 6 are closed as shown, and the open position where the windows 6, 6 are opened as shown in Figure 2. and the open position, and the magneto-optical disk cassette 1 is connected to the disk drive device. While the device is not attached to the device, it is locked in the closed position by a locking mechanism (not shown).

[0024] 8 is a magneto-optical disk, which has a disc-shaped main part 9 and is fixed to the center of the main part 9. The lower surface 9a of the main portion 9 is coated with a magnetic material. It is on the recording side.

[0025] The magneto-optical disk 8 is placed inside the cassette case 2. At the place where the turntable core 10 matches the turntable insertion parts 6a, 6a of the windows 6, 6 and is rotatably stored with its recording surface 9a facing the lower half 4 side. , the main part 9 is the insertion part of the head etc. of the windows 6, 6 when the shutter 7 is in the open position The outside of the cassette case 2 is exposed through 6b and 6b.

[0026] 11 and 11 are engagements formed at the rear end portions of the left and right side edges of the cassette case 2, respectively. The notch 12 is a setting for selectively setting whether or not to record on the magneto-optical disk 8. The setter 12 is located at the rear left corner of the cassette case 2 in the above-mentioned engagement position. It is arranged near the notch 11.

[0027] 13 is cleaning for cleaning the recording surface 9a of the magneto-optical disk 8; means, which is arranged inside the cassette case 2, and which makes contact with and separates from the recording surface 9a. a cleaning member that is brought into contact with the cleaning member, and a support member that supports the cleaning member. , a coil for pressing the support member to bring the cleaning member into contact with the recording surface 9a. Pressed by a spring and a release pin provided on the disk drive device Consists of children, etc.

[0028] Reference numeral 14 denotes a support member made of a plate spring material, and is located at the center of the cassette case 2. It has a strip-like shape with a length slightly shorter than the distance between the front right corner and the rear right corner. The part 14a closer to the slight corner than the center in the hand direction (hereinafter referred to as the "crank part") cormorant. ) is bent into a crank shape in the plate thickness direction, and the end on the corner side (hereinafter referred to as the "base end") Say. ) is formed with an insertion hole 14b.

[0029] 15 is the bottom wall of the lower half 4, and a substantially cylindrical shape is provided at the right rear corner of the top surface. A mounting seat 16 is provided that protrudes, and the mounting seat 16 is approximately half the thickness of the cassette case 2. A screw hole 16a is formed in the upper surface of the screw hole 16a.

[0030] Then, the screw 17 is inserted into the insertion hole 14 formed at the base end of the support member 14. By screwing this into the screw hole 16a of the mounting seat 16, the bottom wall of the lower half 4 is fixed. It is attached to 15.

[0031] Therefore, the portion 14c of the support member 14 on the proximal end side from the crank portion 14a is so that it is at a higher position than the remaining part 14d (hereinafter referred to as the "disc facing part"). , and the disk facing portion 14d is connected to the recording surface 9a of the magneto-optical disk 8 from below. The supporting member 14 is positioned so as to face each other, and the tip of the supporting member 14 is located at the center of the magneto-optical disk 8. - arranged so as to face the core 10.

[0032] Reference numeral 18 denotes a cleaning member, for example, a thick member that is excellent in wiping off dust, etc. substantially the entire upper surface of the disk facing portion 14d of the support member 14. It has a size equal to the body and is glued there, so this cleaning The member 18 faces the recording surface 9a of the magneto-optical disk 8.

[0033] 19 is the center of the top surface of the bottom wall 15 of the lower half 4 from the mounting seat 16 to the bottom wall 14. It is a short protrusion formed at a position slightly closer to the tip.

[0034] Between the crank part 14a and the base end of the support member 14, and above the protrusion 19. The part located on the right side is formed to have a substantially circular shape when viewed from above, and the protrusion 1 is formed on this part. 4e is formed in a downwardly protruding shape.

[0035] 20 is a coil spring whose both ends are connected to the protrusion 14e of the support member 14. The bottom wall 15 is fitted onto the protrusions 19 formed on the case 2 separately. and the support member 14.

[0036] Therefore, the support member 14 is moved upward by the elastic force of the coil spring 20. Power is applied, and this moving force causes the cleaning member 18 to move toward the magneto-optical disk 8. contact the recording surface of the Also, in this state, the magneto-optical disk 8 is attached to the upper surface of the upper half 3. 21, and the magneto-optical disk 8 is placed in the cassette case 2. This prevents internal rattling and puts the brakes on. The magneto-optical disk 8 does not rotate easily, and the magneto-optical disk 8 may be scratched. is prevented.

[0037] Reference numeral 22 denotes a small, approximately cylindrical pressed element, the lower end 22a of which is the remaining part. The upper end portion 22b is formed in a substantially hemispherical shape. So The pressed element 22 extends from the crank portion 14a of the support member 14 to the proximal end. It is fixed by a fixing means such as adhesive at a position slightly closer to the part side.

[0038] 21a is an insertion hole formed in the rear right corner of the upper wall 21 of the upper half 3; , a diameter that is approximately the same as or slightly larger than the diameter of the portion above the lower end 22a of the pressed element 22. have.

[0039] A portion above the lower end 22a of the pressed element 22 is inserted into the insertion hole 21a. The upper end 22b is slidably inserted into the insertion hole 21a. It projects upward from the top wall 21.

[0040] Therefore, it protrudes upward from the insertion hole 21a of the upper wall 21 of the cassette case 2. When the upper end 22b of the pressed element 22 is pressed downward, the support member 14 The cleaning member 18 is bent by using the end as a fulcrum, and the cleaning member 18 is moved downward to remove the magneto-optical disk. The recording surface 9a of the disk 8 is spaced apart from the recording surface 9a.

[0041] 23 is a disk drive device (drawing) that uses the magneto-optical disk cassette 1. Only the main parts are shown here. ).

[0042] 24 is a cassette holder of the disk drive device 23, which is attached to the main body of the device. It is arranged so that it can move freely in the vertical direction, and the cassette case of the magneto-optical disk cassette 1 It has a flat box shape with a space large enough to accommodate the base 2. The rear surface 24a is opened as an attachment/detachment port, and the magneto-optical disk cassette 1 is detachably loaded into the cassette holder 24 through the attachment/detachment port 24a.

[0043] Note that when the magneto-optical disk cassette 1 is inserted into the cassette holder 24, the cassette A locking member (not shown) provided on the holder 24 engages with the engagement notch of the cassette case 2. 11, 11, whereby the magneto-optical disk cassette 1 is inserted into the cassette holder. The camera is locked to the camera 24.

[0044] 25 is the top plate of the cassette holder 24, and 25' is the bottom plate of the cassette holder 24. , relatively large openings 25a, 25 are provided in the center of the top plate 25 and the bottom plate 25'. ´a is formed, and a release pin is formed at the rear right side of the top plate 25 near the attachment/detachment opening 24a. A through hole 25b is formed.

[0045] When the magneto-optical disk cassette 1 is inserted into the cassette holder 24, the magneto-optical disk The shutter 7 of the cassette holder 1 is a shutter (not shown) provided on the cassette holder 24. The magneto-optical disk cassette is moved to the open position by the open/close mechanism. 1 into the cassette holder 24, the cassette case 2 is Windows 6, 6 correspond to openings 25a, 25'a, respectively.

[0046] Further, the pressed element 22 provided in the magneto-optical disk cassette 1 is a magneto-optical disk. When the cassette 1 is inserted into the cassette holder 24, its upper end 22b It is pressed by the top plate 25 of the set holder 24 and moves downward, and then the release pin is inserted. It is moved upward by the elastic force of the coil spring 20 at a position corresponding to the hole 25b.

[0047] Therefore, when the magneto-optical disk cassette 1 is inserted into the cassette holder 24, The support member 14 is once bent downward to move the cleaning member 18 onto the magneto-optical disc. The cassette holder of the magneto-optical disk cassette 1 is separated from the recording surface 9a of the disk 8. Almost at the same time as the insertion into the cleaning member 24 is completed, the cleaning member 18 is moved upward. is brought into contact with the recording surface 9a of the magneto-optical disk 8.

[0048] 26 is a spindle motor; 27 is fixed to the rotating shaft of the spindle motor 26; The turntable 28 is an optical pickup, and the optical pickup 28 is It is movably supported by a feed screw 29 and a guide shaft 30 that extend parallel to each other.

[0049] 31 is a magnet for forming an external magnetic field.

[0050] 32 presses the pressed element 22 to move the cleaning member 18 to the magneto-optical disk 8. The release pin 32 is a release pin for separating the cassette from the recording surface 9a. A release pin insertion hole 25b is provided in a support means (not shown) attached to the top plate 25 of the holder 24. is supported above so as to be movable in the vertical direction, and is connected to an electromagnetic drive means (not shown). and when the electromagnetic drive means is not excited, as shown in FIG. The lower end surface is held at a standby position slightly higher than the top plate 25, and the electromagnetic drive hand When the stage is energized, its lower end surface is inserted into the cassette holder 24 as shown in FIG. to the pressing position close to the top surface of the cassette case 2 of the magneto-optical disk cassette 1. will be moved.

[0051] Therefore, when the optical disc cassette 1 is inserted into the cassette holder 24, the cassette The cutter holder 24 is moved downward, thereby removing the turntable 27 and the optical pin. The upper end of the backup 28 protrudes into the cassette case 2 through the window 6 of the lower half 4. The center core 10 of the magneto-optical disk 8 is attracted and held on the turntable 27. At the same time, the objective lens 28a of the optical pickup 28 starts recording on the magneto-optical disk 8. It is closely opposed to the surface 9a.

[0052] Separately, the magnet 31 is inserted into the cassette case from the window 6 of the upper half 3. The optical pickup 28 is protruded into the inside of the magneto-optical disk 8 and holds the main part 9 of the magneto-optical disk 8 therebetween. to face.

[0053] This state is shown in FIG. 5, and the magneto-optical disk 8 is placed on the turntable 28. By being attracted, it is separated from the inner surface of the cassette case 2, thereby causing the It is in a state where it is rotated integrally with the turn table 27.

[0054] Then, it is detected that the magneto-optical disk 8 is mounted on the turntable 27. Then, the spindle motor 26 rotates, which causes the turntable 27 to move magneto-optically. It rotates integrally with the disk 8. Then, the cleaning member 18 becomes relatively magneto-optical. The air moves to wipe the recording surface 9a of the disk 8, thereby causing the recording surface 9a to be wiped away. Dust attached to the surface 9a is wiped off by the cleaning member 18.

[0055] Next, after the turntable 27 has rotated several times to several tens of times, the electromagnetic drive means is rotated. Excitation is performed to move the release pin 32 to the pressing position, and the upper end of the pressed element 22 is moved to the pressing position. By pressing the portion 22b, the support member 14 is moved downward, and thereby the cleaning The gating member 18 is separated from the magneto-optical disk 8 (see FIG. 6).

[0056] Cleaning of the recording surface 9a of the magneto-optical disk 8 and magneto-optical cleaning of the cleaning member 18 The separation from the magneto-optical disk 8 is performed as described above, and these are separated from the magneto-optical disk 8. Executed prior to recording or reproducing signals for the

[0057] Therefore, recording and reproduction of signals on the magneto-optical disk 8 are always performed on the magneto-optical disk. This is performed after the cleaning of the recording surface 8 is performed, so that at least the recording surface 9 is cleaned. Recording and playback errors caused by dust adhering to a are reliably prevented, and Recording and reproduction are performed with the cleaning member 18 separated from the magneto-optical disk 8. Therefore, the cleaning member 18 does not become a load for the rotation of the magneto-optical disk 8. There is no.

[0058] Then, when a command is issued to eject the magneto-optical disk cassette 1, The excitation state for the electromagnetic drive means is released and the release pin 32 is returned to the standby position. . As a result, the support member 14 is moved upward by the elastic force of the coil spring 20. The cleaning member 18 is brought into elastic contact with the magneto-optical disk 8.

[0059] Therefore, the magneto-optical disk cassette 1 does not apply a brake to the magneto-optical disk 8. It is taken out in a state where it is removed.

[0060] Such a magneto-optical disk cassette 1 has a cleaning means 1 such as a release pin 32. Can also be used with different types of disk drive devices that do not have a mechanism compatible with 3. I can do it.

[0061] That is, the cassette holder 24A shown in FIG. device, for example, a cassette holder provided in a conventional disk drive device. , the top plate 25 of this cassette holder 24A is connected to the cassette of the disk drive device 23. Since it does not have the release pin insertion hole 25b formed in the lock holder 24, When the magneto-optical disk cassette 1 is inserted into the cassette holder 24, the top plate 25 is covered. The presser 22 is moved downward, so in this state, the magneto-optical disk cassette 1, the cleaning member 18 is always kept separated from the magneto-optical disk 8. Then, the magneto-optical disk cassette 1 can be used as usual.

[0062] 8 and 9 show a modification 1A of the magneto-optical disk cassette 1. .

[0063] In this magneto-optical disk cassette 1A, the length of the pressed element 22A is The length of the indenter 22 should be shorter than that of the indenter 22 so that the pressed object is not pressed by the release pin 32. As shown in FIG. It may be located on the same plane, or it may be located slightly recessed within the hole 21a. It is designed so that

[0064] In accordance with the above-mentioned shape of the pressed element 22A, the release pin 32A is located under the pressed element 22A. The end portion 33 is formed to have a thickness that allows it to be inserted into the hole 21a, and therefore, When the release pin 32A is moved to the pressed position, as shown in FIG. 3 is inserted into the hole 21a while pressing the upper end surface of the pressed element 22A.

[0065] By making the pressed element 22A into such a shape, the outer shape of the cassette case 2 can be changed. Can be made into a shape without protrusions on the surface, that is, a conventional magneto-optical disk cassette It can be made into a shape that does not differ from the external shape of the There is no need to change the shape of the case.

[0066]

[Effect of the idea] As is clear from the above description, the optical disc cassette of the present invention is An optical disc is rotated inside a thin box-shaped cassette case with an approximately square planar shape. An optical disc cassette that is rotatably housed, and in which the optical discs are arranged in a radial direction. One end of the extension is located at one corner of the cassette case and is located on the recording surface of the optical disc. a support member whose portion facing the optical disc is movable in the thickness direction of the optical disc; A cleaning member attached to a portion of the holding member facing the recording surface of the optical disc; , for pressing the support member to bring the cleaning member into contact with the optical disc. and a springing means, the end of the supporting member on the corner side of the cassette case is connected to the cassette. The pressed part is supported by the case and is located at the corner. The above-mentioned cleaning is performed by pressing the part with a release means provided on the disk drive device. The optical disc is characterized in that the recording member is separated from the optical disc.

[0067] Therefore, according to the optical disc cassette of the present invention, the optical disc can be cleaned. Part of the cleaning mechanism for cleaning, especially the support member that supports the cleaning member The fulcrum part and the pressed part are placed in the corner of the cassette case, saving space. These parts can be arranged with a relatively large margin, so the dimensions of each part can be The accuracy does not need to be so high, and the cost can be reduced.

[0068] Additionally, the cleaning member is released by the operation of the release means on the disk drive device side. Since the cleaning material is placed away from the optical disc, the cleaning material cannot be applied to the optical disc. If you select the spring constant of the springing means for contact, the disk drive device can release the The pushing force of the means only needs to be strong enough to resist the above-mentioned resilient means, and the disk drive It is easier to design the release means of the device, and the elastic force of the trigger means is reduced over time. Even if it weakens, it will only cause insufficient cleaning and may interfere with the rotation of the optical disc. Never.

[0069] Moreover, when not in use, the cleaning member is adapted to the elastic force of the elastic means. The brake member against the optical disc is pressed against the optical disc with a certain degree of force. This means that the means for cleaning optical discs is This also serves as a means to prevent the school disc from rattling inside the cassette case. Ru.

[0070] In the above embodiment, the release means provided in the disk drive device Pressing of the supporting member is performed via a pressed element provided integrally with the supporting member, and , the tip of the pressed element protrudes from the outer surface of the cassette case, and the optical disc When the cassette is loaded into the cassette holder of a conventional disk drive device, The pressing element is relatively pressed by the inner surface of the cassette holder and the cleaning section The material is separated from the optical disc, but by doing this, it is possible to It can also be used with other disk drive devices to maintain compatibility. I can do it.

[0071] In addition, on the contrary, as in the modified example, the tip of the pressed element is attached to a cassette. If you do not protrude from the outside of the case, there will be no protruding parts on the outside of the cassette case. This makes it easier to handle.

[0072] Furthermore, such a pressed element has a hole formed in the outer wall of the cassette case. This is to keep the cassette case closed at all times, allowing dirt to enter the inside of the cassette case through the hole. can be prevented from entering.

[0073] However, in the present invention, the support member by the release means of the disk drive device The pressing may be performed directly on the support member.

[0074] Furthermore, in the above embodiment, the support member is pressed toward the optical disk side to clean it. A compression spring is used as a resilient means to bring the member into contact with the optical disc. However, this explosive means may be of any type, for example, a support The material itself is made of a material with spring elasticity, and its spring elasticity makes it easy to clean. The holding member may be in contact with the optical disc.

[0075] In addition, the shapes, structures, materials, etc. of each member shown in the above embodiments may be modified according to the present invention. These are just a few examples of how to implement this book. The technical scope of the invention shall not be construed to be limited.

[0076] In particular, the optical disk cassette of the present invention is similar to the magneto-optical disk cassette shown in the above embodiment. The cassette case is not limited to a thin box-like cassette case with an approximately square planar shape. Various types of optical disc cassettes have an optical disc rotatably stored inside the cassette. It can also be applied to optical disc cartridges with double-sided recording type optical discs. It can also be applied to a set, in which case the two recording surfaces of the optical disc and each Two corresponding supporting members, a cleaning member, etc. may be separately provided.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the optical disc cassette of the present invention, with a part of the cassette case cut away.

FIG. 2 is a perspective view of an optical disc cassette.

FIG. 3 is an enlarged perspective view showing an exploded main part of the optical disc cassette.

FIG. 4 is a plan view showing the optical disc cassette installed in the disc drive device.

FIG. 5 is an enlarged sectional view taken along the line V-V in FIG. 4;

FIG. 6 is an enlarged cross-sectional view of main parts showing a state in which the cleaning member is separated from the optical disk.

FIG. 7 is an enlarged cross-sectional view of essential parts showing a state in which an optical disc cassette is installed in a conventional disc drive device.

FIG. 8 shows a modified example of the optical disc cassette of the present invention, and is a sectional view of the main part showing a state in which the cleaning member is in contact with the optical disc.

9 is a cross-sectional view of a main part of the optical disc cassette shown in FIG. 8, showing a state in which the cleaning member is separated from the optical disc.

[Explanation of symbols]

1 Optical disc cassette 2 Cassette case 8 Optical disc 9a Recording surface 14 Support member 14d (of the support member) the part facing the recording surface 18 Cleaning member 20 Bombing means 22 Pressed part 23 Disk drive device 32 Release means 1A optical disc cassette 22A Pressed part 32A Release means

Claims (1)

[Scope of utility model registration request] 1. An optical disc cassette in which an optical disc is rotatably housed inside a thin box-shaped cassette case with a substantially square planar shape, the optical disc extending in the radial direction of the optical disc and having one end part of the cassette case. A supporting member is located at one corner and the part facing the recording surface of the optical disc is movable in the thickness direction of the optical disc, and the part of the supporting member facing the recording surface of the optical disc is attached to the supporting member. and a resilient means for pressing the support member to bring the cleaning member into contact with the optical disk, and supporting an end of the support member on the corner side of the cassette case on the cassette case. Further, the cleaning member is separated from the optical disk by using a portion located at the corner as a pressed portion and pressing the pressed portion with a release means provided in the disk drive device. Characteristic optical disc cassette.