WO2010103653A1

WO2010103653A1 - Disc device

Info

Publication number: WO2010103653A1
Application number: PCT/JP2009/054838
Authority: WO
Inventors: 仁永田; 良光福島; 英司星仲; 克彦谷本; 雅之平松
Original assignee: パイオニア株式会社
Priority date: 2009-03-13
Filing date: 2009-03-13
Publication date: 2010-09-16

Abstract

A disc device performs positioning of each claw (222C) at a predetermined position by performing positioning of a turntable before starting a disc loading operation. Conveying position of a disc by a conveying means may be shifted significantly from a proper position only in a predetermined direction depending on dimensional precision of components of the disc device or a disc, but, even in such a case, the amount of riding of a disc can be made substantially constant at each chance of holding a disc by performing positioning of each claw (222C) at a proper position according to the direction of shift. Consequently, occurrence of trouble can be minimized when a disc is held by means of three claws (222C).

Description

Disk unit

The present invention relates to a disk device.

Conventionally, a disc device that records information recorded on a recording medium such as a CD (Compact Disc), a DVD (Digital Versatile Disc), or a BD (Blu-ray Disc), or reproduces the recorded information. It has been known. (For example, see Patent Documents 1 to 3).
In the configurations described in Patent Documents 1 to 3, the disc is held by three claw portions provided on the turntable.

JP 2002-237118 A JP 2006-236512 A JP 2008-140508 A

By the way, Patent Documents 1 to 3 do not disclose the position control of the three claw parts immediately before holding the disk, and the positions in the circumferential direction of the three claw parts differ depending on the occasion of holding the disk. It is thought that.
Thus, even when the circumferential positions of the three claw portions are different for each disc holding opportunity, when the disc is transported to an appropriate position on the turntable, the disc is placed on the turntable. The amount of the disk that rides on the claw portion of the disk (hereinafter referred to as the disk loading amount) is substantially constant at each disk holding opportunity, so that there are few problems that occur when holding the disk. On the other hand, depending on the parts of the disk device, the dimensional accuracy of the disk, or the structure of the disk device, the disk transport position may deviate greatly only in a predetermined direction from the appropriate position. In such a case, the amount of loaded disk varies depending on the disk holding opportunity, and there is a possibility that the disk cannot be properly held or the load applied to the disk device increases.

An object of the present invention is to provide a disk device capable of minimizing the occurrence of problems when a recording medium is held by a plurality of claws.

The disc device of the present invention includes a transport means for moving a disc-shaped recording medium having a center hole into the case body and carrying it out of the case body, a turntable capable of holding the recording medium, and the recording medium Is a disk device comprising: pressing means for pressing and holding the turntable; relative movement means for relatively moving the turntable and the pressing means; and rotation control means for controlling the rotation of the turntable. The turntable includes a substantially columnar table rotation shaft portion that is inserted into the center hole, a table placement portion on which the recording medium is placed, protruding in a bowl shape from a side surface of the table rotation shaft portion, Plural holding the recording medium by the table mounting portion provided so as to protrude and retract from the side surface of the table rotating shaft portion. A claw part, and the rotation control means is arranged so that the plurality of claw parts exist at a preset position along the rotation direction of the turntable before the carrying-in operation is started. It is characterized by positioning.

It is a top view which shows the internal structure before the disc carrying in of the disc apparatus which concerns on one Embodiment of this invention. It is the side view which notched a part of disk processing part of the evacuation state. It is a schematic diagram which shows the arrangement | positioning relationship between the magnetism at the time of polarity switching detection, a nail | claw part, and a polarity switching detection means. It is a schematic diagram which shows the arrangement | positioning relationship between the magnetism after a turntable positioning process, a nail | claw part, and a polarity switching detection means. It is the side view which notched a part of disk processing part of a chucking state. It is the side view which notched a part of disc processing part of a performance possible state. It is a top view which shows the internal structure in carrying in the disk of a disk apparatus. It is a schematic diagram which shows schematic structure of the experimental apparatus used in the Example. It is a schematic diagram which shows the shifting direction of the disk with respect to a turntable. It is a schematic diagram which shows turntable state J1. It is a schematic diagram which shows turntable state J2. It is a schematic diagram which shows turntable state J3. It is a schematic diagram which shows turntable state J4. It is a graph which shows the relationship between the turntable state at the time of shifting a disk to the front-back direction, and the peak load at the time of chucking. It is a graph which shows the relationship between the turntable state at the time of shifting a disk to the left-right direction, and the peak load at the time of chucking.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Disc as a disk-shaped recording medium 12 ... Center hole 100 ... Disc apparatus 110 ... Case body 112A ... Pushing means 210 ... Base part which comprises a relative movement means 222 ... Turntable 222A ... Table rotating shaft part 222B ... Table mounting Placement part 222C ... Claw

part

420, 430 ... First and second moving cams constituting relative movement means 500 ... Conveyance means 570, 580 ... First and second eject arms 600 as recording medium positioning means 600 ... Rotation control Control circuit part that also functions as a means

Hereinafter, a disk device according to an embodiment of the present invention will be described.

[Disk unit configuration]
First, the configuration of the disk device will be described with reference to the drawings.
FIG. 1 is a plan view showing an internal configuration of a disk device according to an embodiment of the present invention before carrying in the disk. FIG. 2 is a side view in which a part of the disk processing unit in the retracted state is cut away. FIG. 3 is a schematic diagram showing the positional relationship among magnetism, claw portions, and polarity switching detection means when polarity switching is detected. FIG. 4 is a schematic diagram showing an arrangement relationship among magnetism, claw portions, and polarity switching detection means after the turntable positioning process. FIG. 5 is a side view in which a part of the disk processing unit in the chucking state is cut away. FIG. 6 is a side view in which a part of the disc processing unit in a playable state is cut out. FIG. 7 is a plan view showing an internal configuration of the disk device during loading of the disk.

In FIG. 1, a disk device 100 is a so-called slot-in type that is mounted on a portable electric device such as a notebook personal computer or an electric device mounted on a vehicle.
The disk device 100 is at least one of a reading process for reading information recorded on a recording surface 11 (see FIG. 2) of a disk 10 as a disk-shaped recording medium and a recording process for recording various information on the recording surface 11. Perform information processing.
Further, the disk device 100 can store a small-diameter disk 10A having a diameter of 8 cm and a large-diameter disk 10B having a diameter of 12 cm as the disk 10.
Here, as the disc 10, for example, an optical disc such as a CD (Compact Disc), a DVD (Digital Versatile Disc), a BD (Blu-ray Disc) or an HD-DVD (High Definition DVD), a magneto-optical disc, Various configurations such as a magnetic disk or a composite disk in which these are bonded can be exemplified.
The disk device 100 has a substantially box-shaped case body 110. The case body 110 includes a lower case 111 whose front and upper surfaces are open, and an upper case 112 that substantially closes the upper surface of the lower case 111.
In the following, the upward direction, the downward direction, the right direction, the left direction, the front side direction of the paper surface, and the back direction of the paper surface in FIG. It will be described as appropriate.

A base plate 113 is provided on the back side of the lower case 111. Further, in the case body 110, there are also a disk processing unit 200 called a so-called traverse mechanism, a drive unit 400 that rotates the disk processing unit 200, a transport unit 500 that transports the disk 10, and a rotation control unit. A functioning control circuit unit 600 is provided.

The disk processing unit 200 includes a pedestal unit 210.
The pedestal portion 210 includes a pedestal base portion 211 having a longitudinal frame shape formed in a flat octagonal shape in plan view. The pedestal base 211 is provided from the front and left corners of the case body 110 (hereinafter referred to as the left front corner) to the center. The pedestal base 211 is attached to the lower case 111 by the screw member 213 via the elastic member 212 at the left front corner and the position in the center of the left and right direction and the front side. That is, the pedestal part 210 is pivotally supported by the case body 110 so as to be rotatable about a virtual rotation axis C1 including a portion attached by the screw member 213.
Further, a portion of the pedestal base 211 located at the center of the case body 110 has a first pedestal engaging portion 214 and a second pedestal engaging portion that protrude in a substantially rod shape toward the back side and the right side, respectively. 215 are provided.

The pedestal base 211 is provided with a disk rotation driving means 220 that rotates the disk 10 and an information processing unit 230 that is provided so as to be movable in the longitudinal direction of the pedestal 210 and that processes the disk 10. Yes.
As shown in FIG. 2, the disk rotation driving means 220 includes a rotating electric motor 221 such as a spindle motor, a turntable 222 provided integrally with an output shaft of the rotating electric motor 221, and a rotating electric motor. And a turntable holding substrate 223 to which the motor 221 and the turntable 222 are attached.

The turntable 222 has a so-called self-chuck function and detachably mounts the disk 10.
Specifically, the turntable 222 includes a table rotation shaft portion 222A formed in a substantially columnar shape, a table placement portion 222B protruding in a bowl shape from the side surface of the table rotation shaft portion 222A, and a table rotation shaft portion 222A. And three claw portions 222C that can be protruded and retracted from the side surface.
The table rotation shaft portion 222A is inserted into the center hole 12 of the disk 10 and pivotally supports the disk 10 in a detachable manner.
Three non-illustrated N-pole magnets and S-pole magnets, not shown, are alternately provided along the circumferential direction in the table mounting portion 222B. As shown in FIG. Fan-shaped N-pole regions 222N and S-pole regions 222S having a central angle of about 60 ° as viewed are alternately provided.
The claw portions 222C are provided at positions corresponding to the boundary between the N pole region 222N and the S pole region 222S, that is, provided at substantially equal intervals (approximately 120 ° intervals) along the rotation direction of the table mounting portion 222B. It protrudes from the side surface of the table rotating shaft portion 222A by an urging force by an urging member such as a spring (not shown). Then, the disc 10 is engaged with the periphery of the center hole 12 of the disc 10, and the disc 10 is held, that is, chucked by the table mounting portion 222B.

The turntable holding substrate 223 is provided with polarity switching detection means 223A. The polarity switching detection means 223A has an angle formed by a virtual line D1 passing through the center of the table rotation shaft portion 222A and parallel to the carry-in direction and a line D2 connecting the polarity switching detection means 223A and the center of the table rotation shaft portion 222A. It is provided at a position that is approximately 30 °. Then, the polarity switching detection unit 223A detects, under the control of the control circuit unit 600, that the polarity at the position facing the polarity switching detection unit 223A is switched from the N pole to the S pole during the rotation of the turntable 222. A signal to that effect is output to the control circuit unit 600.
The turntable 222 is positioned in the state shown in FIG. 4 by a turntable positioning process, which will be described later, performed after the disk 10 is unloaded.

As shown in FIG. 1, the drive unit 400 transmits, for example, an electric motor (not shown) whose operation is controlled by the control circuit unit 600, and a drive transmission having a pinion gear 410 and a plurality of gears (not shown). And a longitudinal first moving cam 420 that moves by the drive transmitted by the drive transmission unit, a longitudinal second moving cam 430 that moves as the first moving cam 420 moves, It has. Here, the pedestal portion 210 and the first and second moving

cams

420 and 430 constitute the relative moving means of the present invention.
The electric motor is provided on the front side and the right side of the lower case 111.

The second moving cam 430 is disposed at a position facing the second pedestal engaging portion 215 of the pedestal portion 210, and is provided to be movable in the left-right direction of the lower case 111. On the front surface of the second moving cam 430, a second pressing elevating groove (not shown) with which the second base engaging portion 215 is engaged is formed.
The first moving cam 420 is disposed at a position facing the first pedestal engaging portion 214 of the pedestal portion 210, and is provided so as to be movable in the front-rear direction of the lower case 111.
A rack 421 that can be engaged with the pinion gear 410 is formed on the left side of the first moving cam 420. Further, on the back side of the first moving cam 420 from the rack 421, a first pressing elevating groove (not shown) with which the first base engaging portion 214 is engaged is formed.

When the first moving cam 420 advances and retreats, the first pedestal engaging portion 214 is guided in the vertical direction by the first pressing lift groove. Further, as the first moving cam 420 advances and retreats, the second moving cam 430 moves in the left-right direction, and the second pedestal engaging portion 215 is guided in the up-down direction.
Then, by the vertical guidance of the first and second

pedestal engaging portions

214 and 215, the pedestal portion 210 rotates about the virtual rotation axis C1, and the turntable 222 as shown in FIG. 2 is conveyed. A retracted state positioned at a position farthest from the disk 10 positioned on the path, a chucking standby state (not shown) in which the periphery of the center hole 12 of the disk 10 positioned on the transport path is placed on the claw portion 222C of the

turntable

222, 5 is a chucking state in which the periphery of the center hole 12 of the disk 10 is pressed against the concave pressing means 112A of the upper case 112, and a performance in which information on the disk 10 can be processed by the information processing section 230 as shown in FIG. Transition to possible state.

As shown in FIG. 1, the transport means 500 includes a loading arm 510 provided in the case body 110 that can rotate around a front side and right side position, a loading link mechanism 520, a front side and a left side. A sub-loading arm 530 that can be rotated about the position on the side, a sub-arm slide plate 540, a link plate 550, a guide arm 560 that can be rotated about a position on the left side and in the front-rear direction, and the rear side A first eject arm 570 serving as a recording medium positioning means that can rotate around a substantially central position in the left-right direction, and a position about the left surface side with respect to the center of rotation of the first eject arm 570. The second eject arm 580 as a possible recording medium positioning means and the guide arm 560 are urged toward the unloading direction side of the disk 10. A guide biasing means 590, and a.

A roller 511 for loading and unloading the disk 10 is provided at the rotation tip of the loading arm 510.
The loading link mechanism 520 includes a loading link arm 521 that rotates as the loading arm 510 rotates, and a loading slide plate 522 that moves in the front-rear direction as the loading link arm 521 rotates.
A sub loading arm 530 is connected to the sub arm slide plate 540. When the sub arm slide plate 540 moves in the front-rear direction as the link plate 550 moves, the sub loading arm 530 rotates.
The link plate 550 is arranged in a state of being moved to the rightmost side on the back side of the case body 110 in the initial state where the disk 10 is not inserted. Further, when the loading arm 510 and the loading link arm 521 rotate when the disk 10 is inserted, the loading slide plate 522 moves to the left side in the front direction.
The transport means 500 is driven under the control of the control circuit unit 600, and the

arms

510, 530, 560, 570, and 580 are brought into contact with the periphery of the disk 10, and the disk 10 is carried into and out of the case body 110. . When the disc 10 is loaded, as shown in FIG. 7, the first and

second eject arms

570 and 580 guide the left and right portions of the peripheral edge on the disc 10 loading direction side. 10 positioning in the left-right direction.

A switch 610 is provided on the back side of the lower case 111. The switch 610 has a movable piece 611 that can protrude in the front direction. The movable piece 611 is provided so as to be in contact with the contact piece 551 of the link plate 550.
The switch 610 detects the insertion of the disk 10 by inserting the movable piece 611 by moving the link plate 550 to the left side when the disk 10 is inserted by the user and the loading arm 510 rotates to the back wall. To do. Further, when the disk 10 is unloaded by the conveying means 500 and the loading arm 510 rotates to the front side, the link plate 550 moves to the right side and the movable piece 611 protrudes to detect the unloading of the disk 10. When the switch 610 detects the insertion or unloading of the disk 10, it outputs a signal to that effect to the control circuit unit 600.

The control circuit unit 600 is configured as a circuit configuration on a circuit board on which various electrical components are mounted, and controls the operation of the entire disk device 100. In addition, when the control circuit unit 600 recognizes that the operation of unloading the disk 10 has been completed, the control circuit unit 600 positions the turntable 222 so that the claw portion 222C exists at a preset position along the rotation direction of the turntable 222. Perform turntable positioning processing. The details of the turntable positioning process will be described later.

[Disk unit operation]
Next, the carry-out operation of the large-diameter disk 10B in the disk device 100 will be described.
First, although not shown here, when the control circuit unit 600 recognizes an operation to carry out the large-diameter disk 10B from the state where the large-diameter disk 10B is inserted into the case body 110, the first moving cam 420 is moved to the back side. When the link plate 550 is moved to the right side by the movement of the first moving cam 420, the

arms

510, 530, 560, 570, and 580 are rotated to hold the outer edge of the large-diameter disk 10B. Thereafter, when the first moving cam 420 further moves to the back side, the pedestal part 210 moves to the bottom side, and the large-diameter disk 10B is detached from the turntable 222 by an unillustrated eject pin.
Thereafter, when the large-diameter disk 10B moves to the front side and reaches the unloading detection position by the driving of the roller 511 of the loading arm 510 and the urging force of the

ejection arms

570 and 580, the movable piece 611 of the switch 610 is moved. Projecting, the control circuit unit 600 detects that the large-diameter disk 10B has been carried out. Then, the control circuit unit 600 immediately performs turntable positioning processing.

Specifically, the control circuit unit 600 rotates the turntable 222 in the clockwise direction indicated by the arrow Y1 shown in FIG. And the polarity of the position facing the polarity switching detection means 223A has been switched from the N pole to the S pole (the boundary between the N pole area 222N and the S pole area 222S has reached the position facing the polarity switching detection means 223A. ) Is detected, the turntable 222 is rotated clockwise by 180 °, and the rotation is stopped in a state as shown in FIG. 4 to complete the turntable positioning process.
By this turntable positioning process, the turntable 222 is positioned so that the angle formed by the line D3 connecting the arbitrary claw portion 222C and the center of the table rotation shaft portion 222A and the imaginary line D1 is approximately 30 °. Is done. In this state, all the claw portions 222C are not positioned on the virtual line D1.

[Effect of disk unit]
According to the above disk device 100, the following effects can be expected.
(1) The disk device 100 performs a turntable positioning process before starting the disk carry-in operation, and positions each claw part 222C at a preset position.
For this reason, depending on the dimensional accuracy of the components of the disk device 100 and the disk 10, the transport position of the disk 10 by the transport unit 500 may be greatly shifted only in a predetermined direction from the appropriate position. Is positioned at an appropriate position in accordance with the direction of displacement, so that the amount of disk riding can be made substantially constant at each disk holding opportunity. Therefore, it is possible to minimize the occurrence of problems when the disc 10 is held by the three claw portions 222C.

(2) In the turntable positioning process, the claw portion is located on the imaginary line D1 and on the position in the unloading direction side (lower side in FIG. 4) from the center of the table rotation shaft portion 222A (hereinafter referred to as unloading side center position) Positioning is such that 222C does not exist.
Here, when the claw portion 222C exists at the center position on the carry-out side, for example, when the disc 10 is inserted obliquely downward by the user, the disc 10 enters between the claw portion 222C and the table mounting portion 222B. Therefore, there is a possibility that it cannot be properly carried in or the claw portion 222C may be damaged. On the other hand, in the above embodiment, the turntable 222 is positioned so that the claw portion 222C does not exist at the center position on the carry-out side, so that the disk 10 enters between the claw portion 222C and the table mounting portion 222B. Can be prevented.

(3) The disk device 100 is provided with the

eject arms

570 and 580 for positioning the disk 10 in the left-right direction, and the angle formed by the line D3 and the virtual line D1 is approximately 30 ° in the turntable positioning process. Is positioned.
Here, as in this embodiment, it is easy to provide positioning means in the left-right direction of the disk 10 (direction along the surface direction of the disk 10 and perpendicular to the loading direction), but the front-rear direction (loading direction, unloading direction). It is generally difficult to provide the positioning means), and therefore the amount of deviation of the transport position of the disk 10 by the transport means 500 in the front-rear direction is likely to be larger than in the left-right direction. Further, by positioning the claw portions 222C at the above positions, the shortest distance among the distances between the respective claw portions 222C and the virtual line D1 parallel to the loading direction (front-rear direction) can be maximized.
Therefore, even when the amount of deviation in the front-rear direction increases, the amount of disk riding on each claw portion 222C can be minimized, and the disk 10 cannot be properly held or the load on the disk device 100 increases. The occurrence of defects can be suppressed.

[Other Embodiments]
Note that the present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved.

That is, the position of the claw portion 222C to be positioned by the turntable positioning process is not limited to the position shown in FIG. 4, but is shifted only in a predetermined direction according to the components of the disk device 100, the dimensional accuracy of the disk 10, or the structure of the disk device 100. If it is known that the possibility is high, it may be set to be an appropriate position in the direction.
Further, the turntable positioning process may be performed using a configuration other than the polarity switching detection unit 223A.
Further, after the carry-out operation is completed, a pull-out detection unit that detects a state in which the disk 10 is pulled out from the case body 110 by a user may be provided, and when the pull-out is detected, the above-described temporary rotation process may be performed immediately. .
Further, an insertion detection means for detecting a state in which the disk 10 is inserted into the case body 110 by the user before starting the carry-in operation may be provided, and the temporary rotation process may be immediately performed when the insertion is detected. .

Furthermore, the present invention may be applied to a disk device that processes only the small-diameter disk 10A or the large-diameter disk 10B, or a disk having another diameter.
In addition, the specific structure and procedure for carrying out the present invention can be appropriately changed to other structures and the like within a range in which the object of the present invention can be achieved.

Next, an example performed to confirm the effect of the disk device 100 will be described.
FIG. 8 is a schematic diagram showing a schematic configuration of the experimental apparatus used in the examples. FIG. 9 is a schematic diagram showing the disc shifting direction with respect to the turntable. 10 to 13 are schematic diagrams showing the turntable states J1 to J4, respectively. FIG. 14 is a graph showing the relationship between the turntable state and the chucking peak load when the disk is shifted in the front-rear direction. FIG. 15 is a graph showing the relationship between the turntable state and the peak load during chucking when the disc is shifted in the left-right direction.

[experimental method]
First, an experimental apparatus 90 as shown in FIG. 8 was prepared. The experimental apparatus 90 includes a mounting table 91 on which the turntable 222 is mounted, a top plate 92, a mounting jig 93, and a push-pull gauge 94 having a measuring element 94A.
Then, a sample (disc 10) under the conditions shown in Table 1 and FIGS. 9 to 13 was placed on the turntable 222. Thereafter, as shown in FIGS. 8 and 9, the pressing portion 92 </ b> A of the top plate 92 is brought into contact with the disk 10, and the top plate 92 is pressed in the direction of arrow F through the mounting jig 93 by the push-pull gauge 94. The disk 10 was chucked on the turntable 222. The peak load at the time of chucking was examined.

Also, the reason why the shift amount in the loading / unloading direction (front / rear direction) is set larger than the shift amount in the left / right direction is that the positioning means in the front / rear direction is generally provided when the positioning means in the left / right direction is provided This is because it is difficult to compare, and the case where the positional deviation in the front-rear direction is large is assumed.

[Experimental result]
As shown in FIG. 14, when the disk 10 is shifted in the front-rear direction, the turn table state J1, J2 where the claw portion 222C exists on the imaginary line D1, and the turn where the claw portion 222C does not exist on the imaginary line D1. It was confirmed that the peak loads in the table states J3 and J4 were small.
Further, as shown in FIG. 15, it was confirmed that when the disk 10 was shifted in the left-right direction, there was no significant difference in peak load between the turntable states J1 to J4.
Furthermore, it was confirmed from FIGS. 14 and 15 that the peak load increases as the shift amount increases.
From the above, in the configuration in which the transport position of the disk 10 is highly likely to be shifted in the front-rear direction, the claw portion 222C does not exist on the virtual line D1, and the angle formed by the line D3 and the virtual line D1 is approximately 30 °. By positioning the turntable 222 in such a manner, it was confirmed that the peak load at the time of chucking can be reduced and the occurrence of problems when holding the disk 10 can be minimized.

[Effect of the embodiment]
As described above, the disk device 100 performs the turntable positioning process before starting the disk carry-in operation to position each claw portion 222C at a preset position.
For this reason, the transport position of the disk 10 by the transport means 500 may be greatly deviated only from the appropriate position in a predetermined direction. Thus, the amount of loaded disk can be made substantially constant at each disk holding opportunity. Therefore, it is possible to minimize the occurrence of problems when the disc 10 is held by the three claw portions 222C.

The present invention can be used as a disk device.

Claims

A transport means for moving a disc-shaped recording medium having a center hole into the case body and carrying it out of the case body;
A turntable capable of holding the recording medium;
Pressing means for pressing and holding the recording medium against the turntable;
Relative movement means for relatively moving the turntable and the pressing means;
A rotation control means for controlling the rotation of the turntable, and a disk device comprising:
The turntable is
A substantially cylindrical table rotating shaft portion inserted through the center hole;
A table mounting portion on which the recording medium is mounted, protruding in a bowl shape from the side surface of the table rotation shaft portion;
A plurality of claw portions that are provided so as to protrude and retract from the side surface of the table rotation shaft portion and hold the recording medium by the table placement portion,
The rotation control means positions the turntable so that the plurality of claw portions exist at preset positions along the rotation direction of the turntable before the operation of carrying in is performed. Disk unit to be used.
The disk device according to claim 1,
The rotation control means is arranged so that the claw portion does not exist at a position on a virtual line passing through the center of the table rotation shaft portion and parallel to the carry-in direction and on the side of the carry-out direction from the center of the table rotation shaft portion. A disk device characterized by positioning the turntable.
The disk device according to claim 2,
Comprising a recording medium positioning means for positioning the recording medium along a surface direction of the recording medium and in a direction orthogonal to the carry-in direction;
The turntable is provided with three claw portions arranged at substantially equal intervals along the rotation direction,
The rotation control means positions the turntable such that an angle formed by a line connecting one claw portion and the center of the table rotation shaft portion and the imaginary line is approximately 30 °. Disk unit to be used.