JPH0793864A - Recording medium drive - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide an optical disk device capable of fixing a recording medium at a predetermined position and capable of reliably ejecting the recording medium. According to the optical disk device 10 of the present invention, the disk cartridge 2 accommodating the optical disk 4 has a predetermined reference surface via a spring member 26 arranged in the drive motor 22.
Pressed against 20a. This spring member 26 is
Is disposed integrally with the motor 22 that is retracted when the cartridge 2 is moved, so that when the cartridge 2 is ejected, it does not provide an undesired pressure to the cartridge 2 and
When the cartridge 2 is inserted, the cartridge 2 can be securely fixed to the reference surface 20a of the holder 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus,
In particular, the present invention relates to an optical disc device that records information on a storage medium by reproducing information from a disc-shaped optical information storage medium (optical disc) and / or irradiating the storage medium with light.

[0002]

2. Description of the Related Art An information recording / reproducing apparatus, for example, an optical disk apparatus, has a disk holding portion for holding an optical disk, a disk drive motor for rotating the optical disk at a predetermined speed, an information recorded on the optical disk and an information on the optical disk. And an optical head for recording the data, a control unit for controlling the positions of the optical head and the optical disk, and the rotation speed of the drive motor.

An optical disc as a recording medium is detachably formed in the main body of the apparatus. Also, most optical discs
In order to protect the recording surface of the optical disk and to facilitate storage or movement, it is housed in an outer case, that is, a cartridge. Further, the disc holding unit holds the optical disc so that the optical disc (in the cartridge) can be provided with a predetermined space by holding the cartridge at a predetermined position. On the other hand, the drive motor (and the optical head) is formed so as to be retractable to a position where it does not come into contact with the cartridge when the cartridge is inserted into the disc holding portion.

By the way, since the optical disk in the cartridge is rotated at a high speed, the church ridge must be fixed so as not to be vibrated undesirably. Therefore, in many optical disk devices, an elastic body such as a leaf spring is arranged on the wall surface of the device main body, and the drive motor (or the disk holding portion) is an optical disk.
(Or, even before being combined with the cartridge), a method has been used in which the cartridge is constantly pressed against a reference position with a predetermined pressure.

The leaf spring functions as a guide path when the cartridge is inserted (in the apparatus body), and when the cartridge is ejected (in the apparatus body), the cartridge is removed from the apparatus body. It is also used as a friction member that regulates the amount of protrusion of the cartridge so that only a fixed amount can escape.

When information is reproduced (or recorded) from the optical disc, the target optical disc, that is, the disc cartridge, is loaded into the main body of the apparatus through the insertion port. In this case, when the cartridge is pulled to the predetermined position, the retracted drive motor is moved toward the optical disc, and the rotation shaft of the drive motor and the central hole of the optical disc are coupled.

During the loading operation, that is, before the combining operation, the disc cartridge is constantly pressed against a predetermined position of the disc holding portion, that is, the cartridge positioning portion, through a leaf spring arranged on the wall surface of the main body of the apparatus so as to be connected to the optical head. Are fixed so that the distance between them is almost constant.

[0008]

However, since it is relatively difficult to control the spring pressure of the elastic body, that is, the leaf spring, there is a problem that the spring pressure cannot be provided within a certain range. This causes a problem that the ejection amount (ejection amount) of the cartridge varies when the cartridge is ejected.

Further, there is a problem that the leaf spring is inserted into the apparatus main body or the cartridge discharged from the apparatus main body is provided with an undesired pressure, thereby causing scratches on the surface of the cartridge.

An object of the present invention is to provide an optical disk device capable of securely fixing (positioning) a cartridge and not causing an undesired pressure on the cartridge when the cartridge is inserted and ejected. Especially.

[0011]

SUMMARY OF THE INVENTION The present invention has been made based on the above-mentioned problems, and is a conveying means for conveying a cartridge containing a recording medium, and the cartridge is conveyed to a predetermined position via the conveying means. Drive means for rotating the recording medium at this time, the drive means is retracted outside the area where the cartridge is transported when the cartridge is transported via the transport means, and When the cartridge is conveyed to the position, it is disposed integrally with the moving means for coupling with the recording medium and the driving means, and when the driving means is coupled with the recording medium through the moving means, the cartridge is removed. The present invention provides a recording medium driving device having a pressure contact means that presses toward a reference position.

Further, according to the present invention, a transporting means for transporting the cartridge containing the recording medium, and a driving means for rotating the recording medium when the cartridge is transported to a predetermined position via the transporting means. When the cartridge is transported via the transporting means, the driving means is retracted to the outside of the area where the cartridge is transported, and at the time when the cartridge is transported to the predetermined position, the recording medium And a moving means to be combined with the cartridge, the cartridge being arranged outside the region where the cartridge is conveyed, and arranged in the vicinity of the cartridge when the cartridge is conveyed to the predetermined position through the conveying means. And a pressing means for pressing the cartridge toward the reference position when the driving means is connected to the recording medium. A recording medium drive device that is arranged integrally with the drive means, and has a pressurizing means that provides a predetermined pressure to the pressure contact means when the drive means is coupled to the recording medium via the moving means. Provided.

[0013]

According to the present invention, the pressure contact means for fixing the cartridge by pressing it against the reference surface is retracted to the outside of the area where the cartridge is transferred when the cartridge is transferred,
When the cartridge is conveyed to a predetermined position, it is moved integrally with a driving unit that rotates the recording medium, and fixes the recording medium in the cartridge to the reference surface. In addition, the pressure contact means,
The cartridge is arranged at a position where it can come into contact with the cartridge when the cartridge is conveyed to a predetermined position, and the cartridge is fixed to the reference surface when the recording medium in the cartridge is fixed by the driving means.

Therefore, when the cartridge is moved from the predetermined position, the pressure contact means, together with the drive means,
The cartridge is evacuated outside the area where it is transported. Therefore, when the cartridge is transported, it is prevented that an undesired pressure is applied to the cartridge.

[0015]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an outline of an optical disk device according to a first embodiment of the present invention.

The optical disk device 10 has a base 14 extending in the horizontal direction, and has a device main body 12 for accommodating a motor and a head mounted on the base 14 (described later).
The cartridge 2 to be described later is inserted into the apparatus main body 12,
Alternatively, the cartridge insertion / removal opening 16 for discharging is arranged.

The base 14 has a cartridge holder 20 for holding the cartridge 2 inserted from the insertion / removal opening 16,
A loading mechanism 18 for retracting the cartridge 2 to a predetermined position on the base 14 is provided. In addition, a notch (hole) (not shown) for inserting a spindle motor 22 described later is formed substantially in the center of the base 14.

Below the base 14, a spindle motor (driving means) 22 for rotating an optical disk 4 (described later) housed in the cartridge 2 is provided in a notch (hole) not shown through a motor moving mechanism 24. It is movably arranged at the corresponding position.

The upper surface (reference surface) of the cartridge holder 20
An identification pin (not shown), which is connected to an identification hole (not shown) formed in the cartridge 2 in advance, determines the type of the optical disk 4 in the cartridge 2, the front and back of the recording surface, and the like. A positioning pin or the like (not shown) for accurately positioning the cartridge 2 by being brought into contact with is disposed.

A cartridge pressing spring for contacting the cartridge 2 (held at a predetermined position by the cartridge holder 20) to the reference surface 20a of the cartridge holder 20 with a predetermined pressure on a motor base (described later) of the spindle motor 22. 26 are arranged.

The base 14 is further provided with a cartridge 2
An optical head 28 that faces the information storage surface of the optical disc 4 through a window 6a (described later) is provided. The optical head 28 is formed to be movable in the radial direction of the optical disc 4 (direction of arrow B) by an access mechanism including a double-acting linear motor (not shown).

FIG. 2 schematically shows the cartridge 2 to be inserted into the optical disk device 10 of FIG. According to FIG. 2, the cartridge 2 has a window 6a for making the recording surface of the optical disc 4 and the optical head 24 face each other, and has a housing 6 for rotatably housing the optical disc 4 therein. There is.

A hub 4a which is in close contact with a turntable 60 (described later) of the spindle motor 22, and a center which is formed at the center of the hub 4a and through which a spindle 62 of the spindle motor described later penetrates are formed at approximately the center of the optical disk 4. The hole 4b is arranged.

The window 6a of the housing 6 is closed when the cartridge 2 is outside the optical disk device 10,
A shutter 8 that is slid to be inserted into the optical disc device 10 to expose the recording surface of the optical disc 4 via an opening / closing mechanism (not shown) is arranged.

The housing 6 also has a positioning hole (not shown) for fixing the housing 6 at a predetermined position via a positioning mechanism (not shown). The cartridge 2 is an optical disc device along the direction of arrow A.
Through the cartridge insertion / removal opening 16 of the optical disk device 10
It is attached to and detached from.

Next, referring to FIG. 3, the loading mechanism 18
Will be described. The loading mechanism 18 is located at a position where the spindle 2 of the spindle motor 22, which will be described later, can connect the cartridge 2 (that is, the holder 20) inserted from the cartridge insertion / removal opening 16 to the center hole 4b of the disk 4. , That is, the cartridge holder 20
The cartridge 2 is conveyed in a substantially parallel manner to a predetermined position for positioning.

At a position in the direction in which the cartridge holder 20 is moved and corresponding to a predetermined position where the cartridge 2 is to be conveyed, a position at which the cartridge holder 20 or the cartridge 2 is stopped, that is, a spindle of the spindle motor 22 is set. A microswitch 30 for detecting a position where 62 can be coupled to the central hole 4b of the disk 4 is arranged.

The cartridge holder 20 is positioned between a pair of guide plates 32 (only one of which is shown) extending in a direction parallel to the moving direction of the cartridge holder 20 and parallel to the recording surface of the optical disk 4. To be done.

The guide plate 32 has a plurality of guide rollers 34a extending from the cartridge holder 20 in a direction orthogonal to the direction in which the cartridge holder 20 itself is moved and in a direction parallel to the recording surface of the optical disk 4. And a plurality of horizontal guide holes 32a and 32b in which 34b are inserted are arranged.

Guide plate 32 and cartridge holder 20
A guide plate 34a and a guide plate 34b are provided between and, and a cam plate 36 for guiding the spindle motor 22 moved by the motor moving mechanism 24 is arranged.

Below one end of the cam plate 36 (only one of which is shown), a cam plate 36 as a motor moving mechanism 24 is used to move the cam plate 36 along the direction in which the cartridge 2 (that is, the cartridge holder 20) is moved. 42 and gear 42
A rack 44 that is meshed with is arranged. The pinion gear 42 is rotated in a predetermined direction via the motor 40.

4 and 5, the motor moving mechanism 24 moves the spindle motor 22 toward the cartridge 2 (that is, the optical disk 4) which has been conveyed to a predetermined position via the cartridge holder 20 (loading mechanism 18). The state in which it is caused is shown. 4 and 5 show the state in which the motor moving mechanism 24 is viewed from the side, and it goes without saying that the same structure as the illustrated structure is formed in a pair. That is, with the cartridge holder 20 interposed,
The same structure is located behind the page.

The motor moving mechanism 24 is moved via a rack 44 that meshes with the pinion gear 42 (see FIG. 3).
A plurality of cam holes 52a, 52b formed by two stepped horizontal portions formed in 6 and an inclined portion connecting them are formed.

A spindle motor 22 is mounted in a plurality of cam holes 52a and 52b formed by two stepped horizontal portions formed on the cam plate 36 and an inclined portion connecting these horizontal portions (described later).
Guide rollers 54a and 54b that are formed integrally with the motor base 72 (described later) and project from a motor housing 78 are inserted.

By rotating the pinion gear 42 in the direction of arrow C, the cam plate 36 is moved in the direction of arrow D, and the motor housing 78 on which the spindle motor 22 is mounted is raised in the direction of arrow J.

The ascending distance in this case is the distance required for the turntable 60 to come into contact with the optical disc 4 through the window 6a of the cartridge 2. As a result, the spindle motor 22 is moved from the position shown in FIG. 5 to the recordable / reproducible position mounted on the spindle motor 22 shown in FIG.

By rotating the pinion gear 42 in the direction opposite to the arrow C, the spindle motor 22 is moved from the recordable / reproducible position to a position avoiding interference with the cartridge 2.

Next, the pulling-in and ejecting operations of the disc cartridge in the optical disc device shown in FIGS. 1 to 5 will be described. Disk cartridge 2
Is inserted into the cartridge insertion / removal opening 16 and the disc holder 20
, The motor (not shown) of the loading mechanism 18 is energized, and the disc holder 20 moves to the micro switch 30.
The disc holder 20 is retracted to a position where it comes into contact with the disc holder 20. At this point, a shutter opening / closing mechanism (not shown) is operated, and the shutter 8 of the disc cartridge 2 is slid to expose the recording surface of the optical disc 4.

Subsequently, the motor 40 of the motor moving mechanism 24 is energized and the pinion gear 42 is rotated in the direction of arrow C, the cam plate 36 is moved in the direction of arrow D, and the motor housing 78 is moved in the direction of arrow J. Is raised to the spindle motor 22
The turntable 60 is brought into contact with the hub 4a of the optical disc 4. At the same time, the spindle 62 is inserted into the center hole 4b of the hub 4a, and the disc 4 is rotatably held.

Specifically, the spindle motor 22 is moved by the rotation of the pinion gear 42, so that the motor housing inserted into the cam holes 52a and 52b of the cam plate 36.
By moving the guide rollers 54a and 54b of 78 along the shapes of the cam holes 52a and 52b, the guide rollers 54a and 54b are raised toward the optical disk 4 of the cartridge 2 which has already been pulled into a predetermined position.

Here, the disk cartridge 2 has a cartridge pressing spring 26 arranged on the motor base 72.
Through the, the cartridge holder 20 is accurately pressed from the lower side to the upper side at a predetermined position of the reference surface 20a of the cartridge holder 20.

After that, the head 28 is opposed to the recording surface of the optical disk 4 exposed through the window 6a of the cartridge 6 via an access mechanism (not shown). On the other hand, when the disc cartridge 2 is ejected (ejected), the motor 40 is energized by pressing an eject button (not shown) (or by outputting an eject signal from a host device (not shown)). And pinion gear 42
Is rotated in the opposite direction (that is, the direction opposite to arrow C) from the time of retracting.

Subsequently, the rack 44 of the cam plate 36 is moved by the pinion gear 42, the guide rollers 54a and 54b of the motor housing 78 are moved along the cam holes 52a and 52b of the cam plate 36, and the spindle 62 of the spindle motor 22 is moved. Is removed from the center hole 4b of the disk, and the turntable 60 of the spindle motor 22 and the hub 4a of the optical disk 4 are
And are released from magnetic attraction.

Further, the cartridge pressing spring 26 arranged on the motor base 72 is maintained in a state in which the cartridge 2 is urged upward for a short time after the spindle motor 22 starts to be lowered, and the spindle motor 22 causes the optical disk 4 to move. When it is completely detached from the hub 4a, it is separated from the cartridge 2 together with the motor base 72.

Subsequently, the shutter 8 of the disc cartridge 2 is slid, the window 6a of the cartridge 2 is closed, and the recording surface of the optical disc 4 is protected. Shutter 8
By binding, the loading mechanism 18 is urged,
The cartridge holder 20 is moved toward the cartridge insertion / removal opening 16.

In this case, the cartridge pressing spring 26 is
Without contacting the cartridge 2, the cartridge 2
Since the cartridge 2 is completely retracted, the cartridge 2 is reliably discharged to the outside of the apparatus main body 12 without receiving an undesired pressure.

FIGS. 6 and 7 show a second embodiment different from the first embodiment shown in FIGS. 1 to 5. Incidentally, the same reference numerals are given to the constitutions which are substantially the same as those of the first embodiment already explained, and the detailed explanation thereof will be omitted.

According to FIGS. 6 and 7, the optical disk device 1
00 has a base 14 extending horizontally, and the base 14
It has an apparatus main body 12 that accommodates a motor, a head, and the like (described later).

The base 14 has a loading mechanism 18 for pulling the cartridge 2 inserted from the insertion / removal opening 16 to a predetermined position, and a spindle motor for rotating the disk 4.
A motor pressing mechanism 124 for moving the cartridge 122 to a predetermined position and a cartridge pressing spring 126 for pressing the cartridge 2 against the reference surface 20a of the disk holder 20 are arranged by raising the spindle motor 122.

The cartridge pressing spring 126 is bent so that both ends of a leaf spring extended in a band shape function as points of action, and is fixed to the base 14 at a substantially central position (length direction). Also, the base 14 has a spring 1
A notch (not shown) is formed along the shape of 26 so as not to prevent the action point of the spring 126 from moving in a predetermined direction.

The spindle motor 122 is a turntable.
60, a spindle 62, and a motor unit 164 for rotating the spindle 62 and the turntable 60. The motor unit 164 includes a motor base 172 having a pressure contact pin 128 and the like for pushing up the action portion of the stator core 94, to which the stator coil 92 is attached, and the cartridge pressing spring 126 toward the cartridge 2 by a predetermined amount, and the rotor magnet 96. Is composed of a fixed rotor 66 and the like. That is, the motor portion 164 is substantially the same motor as the spindle motor 22 having the double spindle shown in FIG.
128 are arranged.

Next, the pull-in and discharge operations of the disc cartridge of the optical disc device shown in FIGS. 6 and 7 will be briefly described. When the disc cartridge 2 is inserted into the cartridge insertion / removal opening 16 and coupled to the disc holder 20, the motor (not shown) of the loading mechanism 18 is energized to the position where the disc holder 20 contacts the micro switch 30. Is drawn in.

Subsequently, the motor 40 of the motor moving mechanism 124 is energized and the pinion gear 42 is rotated in the direction of arrow C, the cam plate 36 is moved in the direction of arrow D, and the motor housing 78 is moved in the direction of arrow J. Is raised to the spindle motor
The turntable 60 of 122 is brought into contact with the hub 4a of the optical disc 4. At the same time, the spindle 62 makes the center hole 4 of the hub 4a
The disk 4 is inserted into the disk b and is rotatably held.

Specifically, the spindle motor 122 is moved by the rotation of the pinion gear 42, so that the cam plate 36 is moved.
Guide rollers 54a and 54b of the motor housing 78 inserted into the cam holes 52a and 52b of the cam holes 52a and 52b.
By being moved along the shape of, the optical disc 4 of the cartridge 2 which has already been pulled into a predetermined position is raised.

Here, in the disk cartridge 2, the action portion of the cartridge pressing spring 126 is directed upward from below to a predetermined position of the reference surface 20a of the cartridge holder 20 via the press contact pin 128 arranged on the motor base 172. Can be pressed accurately.

On the other hand, when the disc cartridge 2 is ejected (ejected), the eject button (not shown) is pressed (or the eject signal is output from the host device (not shown)). Is urged, and the pinion gear 42 is rotated in the direction opposite to that when retracted (that is, the direction opposite to arrow C).

Subsequently, the rack 44 of the cam plate 36 is moved by the pinion gear 42, the guide rollers 54a and 54b of the motor housing 78 are moved along the cam holes 52a and 52b of the cam plate 36, and the spindle 62 of the spindle motor 122 is moved. Is released from the center hole 4b of the disk, and the turntable 60 of the spindle motor 122 and the hub 4a of the optical disk 4 are released from magnetic attraction.

Further, the cartridge pressing spring 126 arranged on the motor base 172 is
For a short time after the start of descending, the state in which the cartridge 2 is laid up by the press contact pin 128 is maintained,
When the spindle motor 122 is completely removed from the hub 4a of the optical disk 4, it is separated from the cartridge 2 together with the motor base 172.

In this case, the cartridge pressing spring 126
Is completely retracted from the cartridge 2 without making contact with the cartridge 2.
Ensures that the device body does not receive undesired pressure.
It is discharged to the outside of 12.

As described above, according to the optical disk device of the present invention, the disk cartridge accommodating the optical disk has the predetermined reference surface through the spring member arranged in the disk drive motor which is lifted from below the cartridge. Is pressed against. Since this spring member is integrated with the motor that is retracted when the cartridge is moved, it does not apply an undesired pressure to the cartridge when the cartridge is ejected, and the cartridge is inserted. If so, the cartridge can be securely fixed to the reference surface of the holder.

Therefore, the surface of the cartridge is not scratched and the protrusion amount of the cartridge when the cartridge is ejected does not vary. The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the scope of the invention.

[0062]

As described above, according to the optical disk device of the present invention, the disk cartridge accommodating the optical disk is pressed against the predetermined reference surface via the spring member arranged in the drive motor. The spring member is moved integrally with a motor that rotates the optical disk when the cartridge is transported to a predetermined position, or is arranged at a position where the cartridge can contact the cartridge when the cartridge is transported to the predetermined position. When is moved and the optical disc in the cartridge is fixed, the optical disc in the cartridge is fixed to the reference surface. Further, the spring member is moved integrally with the motor that is retracted when the cartridge is moved, or is arranged at a position where the pressure is released when the motor is moved.

Therefore, when the cartridge is ejected,
It is possible to securely fix the cartridge to the reference surface of the holder when the cartridge is inserted without providing an undesired pressure to the cartridge.

In this case, the cartridge is not continuously pressed against the disk holding portion even though the drive motor is retracted. Therefore, on the surface of the cartridge,
Problems such as scratches and variations in the protrusion amount of the cartridge when the cartridge is ejected are eliminated.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an optical disk device that is an embodiment of the present invention.

FIG. 2 is a schematic diagram showing an example of a disc cartridge used in the optical disc device shown in FIG.

FIG. 3 is a schematic diagram showing a loading mechanism incorporated in the optical disc device shown in FIG.

4 is a schematic cross-sectional view showing a state before the disc cartridge of the optical disc device shown in FIG. 1 is inserted.

5 is a schematic cross-sectional view showing a state where a disc cartridge is inserted into the optical disc device shown in FIG.

6 is a schematic sectional view of a disc device different from the optical disc device shown in FIG. 1, showing a state before a disc cartridge is inserted.

7 is a schematic cross-sectional view of a disc device different from the optical disc device shown in FIG. 1, showing a state in which a disc cartridge is inserted.

[Explanation of symbols]

2 ... Disc cartridge, 4 ... Optical disc, 4a ... Hub, 4b ... Center hole, 6 ... Housing, 6a ... Window part, 8 ...
Shutter, 10 ... Optical disk device, 12 ... Device body, 14 ... Base, 16 ... Cartridge insertion / ejection opening, 18 ... Loading mechanism, 20 ... Cartridge holder, 20a ... Reference plane, 22 ... Spindle motor, 24 ... Motor moving mechanism, 26 ... Cartridge pressing spring, 28 ... Optical head, 30 ... Micro switch,
32 ... Guide plate, 32a, 32b ... Horizontal guide hole, 34
a, 34b ... Guide roller, 36 ... Cam plate, 38 ..., 40 ... Motor, 42 ... Pinion gear, 44 ... Rack, 52a, 52b ... Cam hole, 54a, 54b ... Guide roller, 60 ... Turntable,
62 ... Spindle, 64 ... Motor part, 72 ... Motor base, 78
… Motor housing, 100… Optical disk device, 122… Spindle motor, 124… Motor moving mechanism, 126… Cartridge pressing spring, 128… Press contact pin, 164… Motor part.

Claims (2)

[Claims] 1. A transport means for transporting a cartridge containing a recording medium, a drive means for rotating the recording medium at the time when the cartridge is transported to a predetermined position via the transport means, and this drive means, When the cartridge is conveyed through the conveying means, the cartridge is retreated outside the area where the cartridge is conveyed, and at the time when the cartridge is conveyed to the predetermined position, it is combined with the recording medium. A press contacting unit that is disposed integrally with the drive unit and presses the cartridge toward a reference position when the drive unit is coupled to the recording medium via the moving unit,
And a recording medium drive device. 2. A transporting means for transporting a cartridge containing a recording medium, a driving means for rotating the recording medium when the cartridge is transported to a predetermined position via the transporting means, and this driving means, When the cartridge is conveyed through the conveying means, the cartridge is retreated outside the area where the cartridge is conveyed, and at the time when the cartridge is conveyed to the predetermined position, it is combined with the recording medium. Outside the region where the cartridge is transported, when the cartridge is transported to the predetermined position via the transport means, the cartridge is arranged in the vicinity of the cartridge, and the drive means is driven via the moving means. A pressure contact means for pressing the cartridge toward the reference position when combined with the recording medium, and an integral unit with the drive means. And a pressurizing unit for providing a predetermined pressure to the press contact unit when the drive unit is coupled to the recording medium via the moving unit.