JPH0461080A - Disk cartridge and disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To obtain a disk cartridge of small size capable of housing a large number of disks by selectively expanding a space between disks fitted into a disk attachment at the time of loading into the subject device. CONSTITUTION:The individual disks 2 are fitted into the disk attachment 3 of an annular shape, and this disk attachment 3 is formed with a restraining part 3a capable of restraining clampers 12a and 12b, while a shaft part 10 is composed of a shaft 11 of an almost hollow state, a plate 13 fixed in the shaft 11 and having plural clampers 12a and 12b forming a pair to be opposite to each other respectively and a remover 18 for turning upward the plural clampers 12a and 12b. Then, prior to performing the recording and reproducing, one space between disks 2 is selectively expanded so as to enable a recording and reproducing means to be inserted to scan the disk 2 to be recorded and reproduced. By this method, the disk cartridge 1 is of a small size and capable of housing a large number of disks 2.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a disc cartridge containing a plurality of discs, and a disc recording/playback method for recording and reproducing information by installing the disc cartridge in a device. Regarding equipment.

(Prior Art) In recent years, optical disks, magneto-optical disks, magnetic disks, and the like have been widely used as disks for recording and reproducing various types of information.

A disk recording/playback device (hereinafter also referred to as a device) that uses these disks to record and play back a large amount of information by installing a disk cart containing a plurality of disks into the device. The applicant first applied for Utility Application Hei 1-62.
There is a method as shown in FIG. 10 proposed in No. 734.

In the disk recording/reproducing apparatus 100 shown in FIG. 10, the lid part 102 of the housing 101 is opened in the direction of arrow A, and the mounting table 104a104b is placed on the bottom plate 103 side of the housing 101.
A disk cartridge 200 is removably placed on top.

Also, inside the disk cartridge 200, a plurality of disks 201 or shafts 201 are arranged at regular intervals via spacers 202.
03 in a stacked state, and both ends of the shaft 203 are rotatably supported by bearings 206a and 206b provided on the top plate 204 and bottom plate 205 of the disk cartridge 200.

Further, a motor 207 is attached to the top plate 105 of the casing 101 by means not shown, and is movable in the vertical direction (arrow Bl, B2 direction). By fitting the upper ends of the disks 201 and rotating the motor 207, the plurality of disks 201 can rotate together with the shaft 203 at a predetermined speed.

Further, on the left side of the apparatus 100, an optical head section 300 for recording and reproducing information on the disk 201 is provided.

In the optical head section 300, a pair of optical pickups 302a and 302b are fixed to the tip of an arm 301, facing the upper and lower surfaces of the disk 201.

Further, the arm 301 of the optical head section 300 is moved in the horizontal direction (arrow direction CI, C2 direction) by means not shown, and when selecting a desired disk 201,
Optical pickups 302a and 302b are disks 201
The arm 301 moves away from the outer periphery of the
, C2 direction) by means not shown.

Furthermore, when recording/reproducing a desired disc 201,
Since the optical pickups 302a and 302b do not scan the desired surface of the disk 201 in the arrow directions C1 and C2,
It has a structure for recording information signals or reproducing recorded information signals.

(Problems to be Solved by the Invention) In the disc recording/reproducing device 100 of the previously proposed technology shown in FIG. 10, as described above, the interval L1 between the stacked discs 201 in the disc cartridge 200 is This is ensured by the length of the spacer 202. The distance L1 is kept wide enough to allow the optical pink-ups 3.2a, 302b fixed to the tip of the arm 301 to move between adjacent disks 201. However, the optical pickup 302a,
Since recording means and reproducing means (not shown) are mounted on 302b, it is formed in a large shape.

For this reason, the height of the disc cartridge 200 loaded with a plurality of discs 201 increases, and the disc recording/playback device 100 also becomes large, which reduces the operability of the disc cartridge 200 and the disc recording/playback device 100. This also poses a problem in terms of installation space for the disc recording/playback device 100.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disc cartridge and a disc recording/playback device that solve the above problems.

(Means for Solving the Problems) The present invention has been made in view of the above-mentioned problems, and is used in a disc recording/reproducing device, in which a plurality of discs stored in a storage game are rotated by a drive source of the device. A disc cartridge stacked at narrow intervals on a rotating shaft, the disc cartridge comprising a plurality of discs each having a disc attachment having an engaging part, and a plurality of disc attachments slidably inserted into the disc cartridge to be stacked. a rotary shaft provided with a displaceable clamper capable of engaging and disengaging the engaging portion of the disc attachment; and a remover forcibly unlocking the clamper; The disc cartridge is characterized in that, when the disc cartridge is installed, the interval between the discs fitted in the disc attachment can be selectively expanded.

Further, a housing for removably supporting a disk cartridge according to claim 1, a drive source for driving the rotating shaft, and a disk lifter means fitted to the disk attachment and selectively lifting a plurality of disks to an upper position. and,
A recording/reproducing means inserted between the lifted disk and the disk below it and scanning the disk surface to record and reproduce information; The present invention provides a disc recording/reproducing apparatus characterized by comprising a remover drive means for returning the disc to its original position via the remover.

(Embodiment) An embodiment of a disc cartridge and a disc recording/reproducing apparatus according to the present invention will be described in detail below with reference to FIGS. 1 to 9.

FIG. 1 is an external perspective view of a disk cartridge according to the present invention, FIG. 2 is a partial cross-sectional perspective view of the disk shown in FIG. 1, and FIG. 3 is an internal structure of the disk cartridge according to the present invention. 4 is a sectional view taken along the Y-Y direction of FIG. 3, FIG. 5 is a longitudinal sectional view showing the initial state of the disc cartridge and disc recording/playback device according to the present invention, and FIG. FIG. 5 is a perspective view of the lid, FIG. 7 is a longitudinal section showing the recording/playback state of the disc cartridge and the disc recording/playback device according to the present invention, and FIG.
Figures (A) to (D) are partially enlarged views showing the operating state of the same disc cartridge and the disc recording/playback device, and Figures 9 (A) and (B) are views showing a modified example of the same disc cartridge. FIG.

To briefly explain the present invention, a disc cartridge in which a plurality of discs are rotatably housed and adjacent discs are formed with narrow intervals is installed in a disc recording/playback device, and before recording/playback, It consists of a disc cartridge and a disc recording/reproducing device that can extend the interval between discs so that a recording/reproducing means can insert and scan the disc to be reproduced.

Disk Cartridge 1> First, the disk cartridge 1 of the present invention will be described with reference to FIGS. 1 to 4.

In FIG. 1, a box-shaped storage case 4 for storing a plurality of discs 2, such as optical discs, has a top plate 4a removably fixed to side plates 4b to 4d with screws 5 after storing the plurality of discs 2. At the same time, one side of the storage case 4 has a side plate 4.
．． At b and 4c, a lid portion 7 is provided which can be opened and closed in the directions of arrows El and E2 by hinges 6.

In addition, in FIG. 3, the top plate 4a and bottom plate 4 of the storage game 4 are
A rotary shaft 11 (hereinafter referred to as shaft 11) of a shaft portion 10, which will be described later as a part of the main part of the present invention, is rotatably supported between bearings 8a and 8b. There is. still,
The axis 11 is shown filled in black in the figure for easy viewing.

Further, each disk 2 is fitted into an annular disk attachment 3 as shown in FIG.
A locking portion 3a (hereinafter referred to as groove portion 3a) is formed in which the groove 3b can be locked.

Further, the disk attachment 3 to which the disk 2 is fitted is fitted in advance to the shaft 11 in a stacked state,
In this stacked state, the distance L3 is so narrow that it is impossible to insert optical pickups 52a, 52b (FIG. 5) of a recording/reproducing means 60 (described later) between the stacked disks 2. Therefore, the disc cartridge 1 is small and can accommodate a large number of discs 2.

Before recording/reproducing, the recording/reproducing means 60 inserts and scans the disc 2 to be recorded/reproduced, so that the interval between some discs is selectively expanded by an operation described later.

That is, the spacer 9 is fitted into the shaft 11 below the shaft 11 and close to the lower bearing 8a, and the spacer 9
A plurality of disks 2 fitted in a disk attachment 3 are stacked above the disk. Before installing the disk cartridge 1 into a disk recording/reproducing device 30 (hereinafter also referred to as device 30) to be described later, a sufficient distance L2 is formed between the top plate 4a and the top surface of the top layer disk 2a. has been done.

The shaft I] has a hollow portion 11a formed therein, and the hollow portion 11. A hole 11b1 is formed in the lower end 11b of the lower end 11b so that a tapered shaft 35a of the motor 35 (FIG. 5) of the device 30 can be fitted therein.

Here, the shaft portion 1o, which is a part of the main part of the present invention, will be explained in more detail.

The shaft portion 10 includes a hollow shaft 11, a plate 13 having a plurality of clampers 12a and 12b fixed in the shaft 11 and forming a pair facing each other, and a plurality of clampers 12.
It is generally composed of a remover 18 that rotates the parts a and 12b upward.

That is, in the hollow part 11a of the shaft 11, there are pins 14a, 14.
A plurality of triangular clampers 12a, 12b are always urged downward by torsion springs 16a, 16b with one end hooked to the clampers 12a, 12b and the other end hooked to the stopper 15, with b as the rotation center. Alternatively, they are provided on a "Z" shaped plate 13 symmetrically about the axis, and both ends of this plate 13 are fixed to the shaft 11 with screws 17, as shown in FIG. There is.

The above clamper 1. ．． 2a and 12b are prevented from rotating downward by a stopper (not shown), and the upward rotation is performed by upward movement of the disk attachment 3, which will be described later, or by an upward pulling operation of the remover 18, which will be described later.

In addition, in the initial state as shown in FIG. They are provided in two rows on the left and right. Further, in this state, the disc attachment 3 is not locked to the uppermost pair of clampers 12a, 12b, and becomes functional when the disc 2 is lifted upward by an operation described later.

Further, a remover 18 is inserted between the left and right side surfaces of the plate 13 within the hollow portion 11a, and the remover 18 can be slid up and down between the two sides. The remover 18 is a hollow part! A thin stepped portion 18a is formed at the upper part of the inside of the la, and connected to the thin stepped portions 1 and 8a, bifurcated stepped portions 18b are formed along the left and right sides of the 13th plate. . Further, a plurality of holes 18b1 are bored in the stepped portion 18b separated into a bifurcated shape, and a plurality of holes 11a1 are also bored in the hollow portion 11a, and these holes 18
b1 and the hole 11a1 are provided with the aforementioned clamper 12a,
12b protrudes, and the main part 3 of the disc attachment 3
The disk 2 fitted into the disk attachment 3 is rotatably supported integrally with the shaft 11 at a stop point JL I (also shown in FIG. 3).

Further, a compression spring 19 is inserted into the narrow stepped portion 18a of the remover 18, and the remover 18 is always urged downward by a ring 20 fixed to the upper end of the hollow portion 11a. . Therefore, the positions of the holes 18b1 and 11a1 are always aligned, and the clampers 12a and 12b protrude from the outer periphery of the shaft 11.
The disc 2 is supported by being engaged with the groove 3a of the disc attachment 3.

Further, the upper end of the thin stepped portion 18a of the remover 18 engages with the solenoid 41 (Fig. 5) of the remover driving means 4o of the device 3C, and pulls the remover 18 upward against one compression spring. A separate ring 21 is fixed for C. When the remover 18 is pulled upward, the inclined portions of the clampers 12a and 12b provided on the plate 13 come into contact with the edges of the holes 18b1 of the remover 18, so that the clampers 12a and 12b move as shown by the arrows Gl and G2.
The structure is such that the clampers 12a, 12b are forcibly rotated in the direction, and the clampers 12a, 12b are disengaged from the groove 3a of the disk attachment 3. This remover 18 performs an operation to return the disk 2 whose disk spacing has been expanded to its initial state during an operation described later.

Note that the disk 2 used in this device 30 is a high-density recording
It is a reproducible disc, and once it is inserted into the storage device 30, it can be used without much need for replacement, so a large amount of information can be recorded and reproduced.

(Slave disk recording/playback device 30) As shown in FIG. 5, the disk recording/playback device 30 is
A lid portion 32 or a hinge 33 is provided on the front side of a box-shaped casing 31 so that the lid can be opened/closed in directions of arrows Fl and F2. Then, the lid section 32 is opened and the disk cartridge 1 is inserted into the bottom plate 31 inside the housing 31.
The disk cartridge 1 is removably placed on the mounting tables 3-4a and 34b on the a side. At this time, the subsection 7 of the disk cartridge 1 is opened at the lower left inside the device 30 as shown in the figure.

Further, below the disk cartridge I, a motor 35 having a tapered shaft 35a is provided on the bottom plate 31a of the housing 31 so as to be movable vertically (in the direction of arrows Gl and G2) by means not shown. , when the disk cartridge 1 is installed, it moves upward and the motor 35
The tapered shaft 35a is the lower end 1 of the shaft 11 described above.
It is fitted into a hole 11b1 formed in 1b, and serves as an addendum that allows the shaft 11 to rotate freely. The motor 35 is
It becomes a driving source that rotates 1.

Further, above the disk cartridge 1, a solenoid 41 serving as a remover driving means 40 for pulling the remover 18 upward is fixed to the +131 top plate 311). A lever 43 that rotates about a shaft 42 is connected to the solenoid 41. Then, by energizing the solenoid 41, the lever 113 rotates clockwise, comes into contact with the ring 21, and the remover 18
can be pulled upward (arrow H1), the aforementioned clampers 12a and 12b are forcibly rotated in the directions of arrows G1 and G2, and the engagement with the disc attachment 3 is released. Note that the remover drive means 40 may use a motor as a drive source instead of a solenoid, but is not limited to this.

Further, on the left side of the disk cartridge 1, a disk lifter means 50, which is a part of the main part of the present invention and lifts the disk 2 inside the disk cartridge 1 upward, and a recording/reproducing device for recording/reproducing the disk 2 are provided. A reproducing means 60 is provided.

The disc lifter means 50 and the recording/reproducing means 60
is moved in the vertical direction (arrow IT,
It is provided so as to be movable in the horizontal direction (I2 direction) and the horizontal direction (arrows J1 and J2 directions), and is placed on standby outside the left side of the disk cartridge 1 in the initial state.

Further, as shown in FIG. 6, the disc lifter means 50 has a friction member 52 attached to the tip of a first arm 51 having a horseshoe-shaped tip.

When expanding the distance between the disks 2, the friction member 52 is brought into contact with the center of the disk 2 and the first arm 51 is moved upward by an operation described later. It has a structure that is lifted upward and expands the distance between the lifted disk 2 and the lower disk 2.

Further, in the recording/reproducing means 60, recording/reproducing head sections 62a and 62b made of, for example, an optical pickup are fixed vertically to the tip of a second arm 61. These recording/reproducing head sections 62a, 62b are connected to the disk lift means 50.
The disk 2 is inserted by a drive mechanism (not shown) while the distance between the disks 2 is expanded, so that both the raised disk 2 and the lower disk 2 can be recorded and reproduced at the same time. In the embodiment, since the recording/reproducing head sections 62a and 62b are vertically fixed to the second arm 61, it is possible to record and reproduce a large amount of information at a time, but this is not limited to this. The recording/playback head section 62a or the recording/playback head section 62a can be moved upward or downward without
It is also possible to attach a reproducing head section 62b. Further, the disk 2 used in this device 30 may be a magneto-optical disk, a magnetic disk, etc. in addition to an optical disk, and it is possible to apply a recording/reproducing section corresponding to each disk.

Operation description of the disc cartridge 1 and the disc recording/playback device 30> Here, the disc cartridge 1 and the disc recording/playback device 30 will be described.
Regarding the operation of the playback device 30, FIGS. 5, 7, and 8 (
A) to (B> will be explained together).

As mentioned above, when the disk cartridge 1 with the disk 2 loaded therein is inserted into the disk recording/reproducing apparatus 30, the initial state shown in FIG. 5 and FIG. 8(A) is achieved.

In this state, the disc lifter means 50 and the recording/reproducing means 60 are open! It is located on the left outside of the disc cartridge 1.

Record the top surface of the top layer disc 2a from the above initial state.
When the recording/reproducing head section 62b of the reproducing means 60 is to be moved across the recording/reproducing head section 62b, since there is a sufficient distance L2 above, recording/reproducing can be performed immediately without causing any problems.

Next, the bottom surface of the uppermost disk 2a and the disk 2a
A case will be described in which recording and reproduction are performed on the upper surface of the disc 2b below.

In this case, as mentioned above, disk 2a and disk 2
Since the gap @L3 between the recording and reproducing means 60 is narrow, the recording/reproducing head sections 62a and 62b of the recording/reproducing means 60 cannot be inserted between them to scan the lower surface of the disk 2a and the upper surface of the disk 2b.

Therefore, in order to increase the distance between the disk 2a and the disk 2b, as shown in FIG.
After that, move the disc lifter means 50 in the direction of arrow J1 to remove the friction member 52 attached to the tip of the first arm 1 on the lower surface and inner circumference of the uppermost disc 2a. bring it into contact. Then, move the first arm 51 upward (
11 direction), the top layer disk 2a
The clampers 12a and 12b-2 that lock the disc recording and V-temperature 3 fitted thereon rotate in the direction of arrow G1.02 against the torsion springs 16a and 16b, and the disc attachment 3 and clamper 12a are rotated in the direction of arrow G1.02.
, 12b is released, and the disk 2a fitted in the disk attachment 3 is lifted upward. When the first arm 51 is further moved in the direction of arrow 11, the upper clamper 12 that does not support the disk 2
a1.12b-1 or by upward movement of the disk attachment 3 fitted to the top layer disk 2a, arrows Gl, G
When the first arm 51 rotates in two directions and stops moving upward at that position, the clamper 12a 1.12b
, the disk 2a is returned to its original state, and the disk attachment 3 fitted with the disk 2a is locked and rotatably supported at the position shown in FIG. 8(C).

In this state, the distance between the adjacent disks 2a and 2b is expanded to a distance L4 that allows the recording/reproducing means 60 to be inserted between the disks 2a and 2b.

Thereafter, the disc lifter means 50 is retracted to the left outside of the disc cartridge 1.

Here, the recording/reproducing means 60 records and reproduces data on the disc 2. As shown in FIGS. 7 and 8 (C'), a recording/reproducing means 60 is inserted between the disk 2a and the disk 2b. That is, by scanning the recording/reproducing heads 62a and 62b fixed to the tip of the second arm 61 in the direction of arrow J1, the lower surface of the disk 2a and the disk 2b are moved.
Recording and playback can be performed simultaneously on the top surface of the disc.

When recording and reproduction of the lower surface of the disk 2a and the upper surface of the disk 2b are completed, the operation of lifting the disk 2b upward is started, and the same operations as described above are repeated in sequence. In addition, from the upper disk 2a to the lower disk 2b,
When recording/reproducing selectively from any disc 2 without sequentially recording/reproducing on..., the interval between the discs 2 is expanded by the disc lifter means 50, and then the recording/reproduction is performed.
A description of whether playback is possible will be omitted.

The operation of returning the disk 2 after recording and reproduction to its original position is as shown in FIG. By applying electricity, the lever 43
rotates clockwise, the tip of the lever 43 comes into contact with the ring 21, and the remover 18 is pulled upward (arrow H1).

As the remover 18 moves upward, the clampers 12a, 1
2b comes into contact with the edge of the hole 18b1 of the remover 18, so that all the clampers 12a, 12b move against the torsion spring 16a16b in the direction indicated by the arrow G1. G
The disk 2a, which rotates in two directions and is supported above with the gap between the disks 2 expanded, falls downward due to gravity and is stacked on the disk 2b below. Note that here, the number of disks 2 supported upward is one (disk 2a).
Even when a large number of disks 2 are supported upward, the remover 18 is moved upward (arrow H1).
), the large number of disks 2 supported above fall downward due to gravity and are stacked as in the initial state. Thereafter, when the solenoid 41 is de-energized, the remover 18 is lowered in the direction of arrow H2 by the force of the compression spring 19, and each disc 2 is returned to its original clamper 12a, 12 corresponding to its respective disc attachment 3.
It is locked by b. Each disk 2 is then returned to its initial state within the disk cartridge 1.

With the above operation, even if the disk cartridge 1 in which the spacing L3 between the disks 2 is narrower than the disk cartridge 200 of the previously proposed technology is installed in the device 30, the disk 2 to be recorded/played can be recorded/played. Regeneration means 60
By extending the interval between the disks 2 so that the disc 2 can be inserted, the recording/reproducing means 60 can be inserted, and recording/reproducing becomes possible.

Therefore, the disk cartridge 1 is small and can accommodate a large number of disks 2, and the device 30 is also small.

Disk cartridge shift 0 of modified example Fig. 9 (A>,
The modified disk cartridge 70 shown in (B) is
The only difference is the disc actuator 71 fitted to the disc 2, and the rest of the basic configuration remains the same.

That is, the disk attachment 71 has a flange portion 71a.
The hall bearing 7 is placed between the long retainer portion 71b and the
1c is inserted, and the flange portion 71a and the elongated retainer portion 71b are integrally assembled via a ball bearing 71c with different levels as shown in the figure.

In the initial state shown in FIG. 9 (A>), the disk 2 fitted into the disk attachment 71 is
1 and is inserted. However, since the long retainer portion 71b of the disk attachment 71 is also stacked as shown, for example, the clamper 12b facing the disk attachment 71 of the disk 2a
-2 or the retainer portion 71b-2 of the disk attachment 71 of the lower disk 2b, and the clamper 12b-2 is in contact with the triangular groove 7 of the flange portion 71a of the disk attachment 71 into which the disk 2a is fitted.
1a1, and the disk 2a is not integrally supported by the shaft 11. Below disk 2 below disk 2a
is in a similar situation. Therefore, even when the shaft 11 is rotated, the plurality of disks 2 do not rotate together with the shaft 11, but are only slightly rotated by the inertial force of the ball bearing 71c.

Furthermore, as shown in FIG. 9(B), when the disk spacing is expanded by the above-described operation, for example, when the disk 2b is lifted upward, the spacing from the disk 2c below may not be sufficient. ing. Since the retainer portion 71b of the disk 2c is separated from the clamper 12b of the disk 2b, this oblique clamper 12b-2 can be locked in the groove portion 71a1 of the disk attachment 71 into which the disk 2b is fitted.

Therefore, only the disk 2b locked to the clamper 12b-2 can rotate together with the shaft 11.

Recording and reproduction are possible only on this disc 2b.

Therefore, as mentioned above, two discs 2 can be recorded simultaneously.
Although it cannot be played back, there is only one disk 2 (for example, disk 2b) that can rotate together with the shaft 11, so the drive source that rotates the shaft 11 becomes smaller and the time required to start and stop the drive source is reduced. This has the advantage that the recording/reproducing operation for the next disc 2 becomes faster.

(Effects of the Invention) As described in detail above, the disc cartridge and the disc recording/playback device according to the present invention, according to claim 1, are characterized in that a large number of discs as shown in the previously proposed technology are stored in a storage case. These disc cartridges are not stacked at wide intervals within the disk cartridges, but are stacked vertically at narrow intervals. By using this disk cartridge in a disk recording/playback device, the disk spacing within the device can be selectively expanded. As a result, the disk cartridge is small and can accommodate a large number of disks, which has advantages such as convenient handling of the disk cartridge.

Further, in claim 2, there is provided a disc recording/playback device employing the disc cartridge of claim 1, wherein after the disc cartridge is installed in the device, discs stacked at narrow intervals are selectively stacked at wide intervals. Configured to be expandable.

As a result, as the disk cartridge becomes smaller, the device can also be made smaller, improving the operability of the device and making a significant contribution to the installation space of the device.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a disk cartridge according to the present invention, FIG. 2 is a partial cross-sectional perspective view of the disk shown in FIG. 1, and FIG. 3 is an internal structure of the disk cartridge according to the present invention. 4 is a sectional view taken along the Y-Y direction of FIG. 3, FIG. 5 is a longitudinal sectional view showing the initial state of the disc cartridge and disc recording/playback device according to the present invention, and FIG. FIG. 5 is a perspective view of the lid, FIG. 7 is a longitudinal section showing the recording/playback state of the disc cartridge and the disc recording/playback device according to the present invention, and FIG.
Figures (A) to (D) are partially enlarged views showing the operating state of the same disc cartridge and the disc recording/playback device, and Figures 9 (A) and (B) are views showing a modified example of the same disc cartridge. FIG. 10 is a longitudinal sectional view showing the structure of a conventional disk cartridge and disk recording/reproducing apparatus. 1... Disc cartridge, 2... Disc, 3
...Disk attachment, 3a...Engagement part, 4
... Storage case, 10 ... Shaft part, 11 ... Rotating shaft, 11a ... Hollow part, 11a1 ... Hole, 12a, .
12b... Clamper, 13... Board, 18... Remover 30... Disk recording/reproducing device, 35... Motor, 40... Remover driving means, 41... Solenoid, 50... - Disc lifter means, 51... first arm, 60... recording/reproducing means, 61... second arm,
62a, 62b...recording/reproducing head section. Patent applicant: Japan Victor Co., Ltd. Representative: Kobe Bogami Figure 4 (A)

Claims (2)

[Claims] (1) A disk cartridge used in a disk recording/playback device, in which a plurality of disks housed in a storage case are stacked at narrow intervals on a rotating shaft rotated by the drive source of the device, and the engaging portion A plurality of discs each having a disc attachment, and a plurality of the disc attachments slidably inserted and stacked, and the engaging portions of the stacked disc attachments are movable to engage and disengage. a rotary shaft equipped with a clamper, and a remover for forcibly releasing the clamper, and when installed in the device, selectively adjusts the spacing between the disks fitted to the disk attachment. A disk cartridge characterized by being configured to be expandable. (2) A casing that removably supports the disc cartridge according to claim 1, a drive source that drives the rotating shaft, and a disc lifter that is fitted into the disc attachment and selectively lifts a plurality of discs to an upper position. means and
A recording/reproducing means is inserted between the lifted disk and the disk below it and scans the surface of the disk to record/reproduce information; What is claimed is: 1. A disc recording/playback device comprising: a remover drive means for returning the disc to its original position via the remover drive means.