JP4124364B2 - Recording / playback device - Google Patents

Description

  The present invention relates to a recording / reproducing apparatus using a disk-type recording medium, and more particularly, a front that enables loading and unloading of a recording medium to and from a disk drive unit provided inside the housing from the front surface of the housing. The present invention relates to a loading type recording / reproducing apparatus.

  A recording / reproducing apparatus using a disk-type recording medium such as an optical disk or a magnetic disk is mounted on a disk drive unit and rotated around a central axis, and moves in a radial direction so as to face and face one surface of the recording medium. The recording / reproducing head is configured to perform one or both of recording and reproducing information on the one surface.

  In this type of recording / reproducing apparatus, it is necessary to attach / detach the recording medium from the outside of the housing to the disk drive unit arranged inside the housing together with the recording / reproducing head, and this attachment / detachment (loading and unloading) Has been put to practical use in a front loading type recording / reproducing apparatus in which the above is performed from the front of the housing (for example, see Patent Document 1).

In this type of recording / reproducing apparatus, for example, a recording medium insertion / ejection port is formed on the front surface of the housing, a transport roller is provided on the inner side of the housing, facing the insertion / ejection port, and a disk is positioned above the disk drive unit. The holder and disk clamper are arranged respectively. Loading of the recording medium is performed by feeding the recording medium inserted from the insertion / ejection port into the housing by the forward rotation of the transfer roller that holds both sides and delivering it to the disk holder. After that, the disk holder is moved on the rotating spindle of the disk drive unit by the downward movement of the disk holder, and finally held on the rotating spindle by the disk clamper that is moved downward. The unloading of the recording medium is performed by first releasing the holding on the rotating spindle by moving the disk clamper, and then Passing the transfer roller by lifting the recording medium by the upward movement of Sukuhoruda carried out feeding outside the housing through the insertion outlet by the reverse rotation of said transfer roller.
JP 2000-113555 A

  In the front loading system as described above, the communication part that communicates the inside and outside of the housing is substantially only the insertion / extraction port for the recording medium, and it is possible to effectively prevent the entry of foreign matter such as dust into the inside of the housing. In addition, there is an advantage that the influence on the internal devices of the housing such as the disk drive unit and the recording / reproducing head can be suppressed to a small extent, while the presence or absence of loading of the recording medium cannot be confirmed from the outside, so that it was loaded first. It is necessary to take measures to prevent the phenomenon that the next recording medium is erroneously loaded without unloading the recording medium, so-called double loading.

  As countermeasures, conventionally, an insertion sensor for detecting whether or not a recording medium is inserted into the insertion / ejection port and a loading sensor for detecting whether or not the recording medium is attached to a disk drive unit are provided. When the first recording medium is detected, double loading is prevented by prohibiting the series of loading operations executed as described above using the detection of the second recording medium by the insertion sensor as a trigger. It is like that.

  However, in such a recording / reproducing apparatus equipped with such a countermeasure for preventing double loading, there is a possibility that a user who tries to insert a recording medium while leaving the previous recording medium may be mistaken for loading failure. In addition, there is a possibility that an unreasonable operation of inserting the recording medium is repeated, leading to problems such as scratches and bending of the recording medium.

  On the other hand, in order to cancel this prohibited state even when it is correctly recognized as being in the loading prohibited state, the recording medium inserted into the insertion / ejection port is once removed and the previously loaded recording medium is discharged. It is necessary to carry out the operation separately, and there is a problem that usability is bad.

  The present invention has been made in view of such circumstances, and an unloading operation for discharging a recording medium left on the disk drive unit is a loading operation for mounting the recording medium inserted into the insertion slot on the disk drive unit. The present invention aims to provide a recording / reproducing apparatus capable of preventing double loading and obtaining good usability without requiring an additional operation.

The recording / reproducing apparatus according to the present invention is a recording / reproducing apparatus in which loading and unloading of a disk-shaped recording medium to and from a disk drive unit provided in the housing can be performed from the front surface of the housing. A first holding groove and a second holding groove which are opened with a width capable of inserting the recording medium on one surface opposed to the insertion / discharge port; A disk holder that moves in a direction in contact with and away from the insertion / discharge port and a direction in which the disk drive unit contacts / separates inside the housing; and an insertion detection unit that detects whether a recording medium is inserted into the insertion / discharge port. , A loading detection means for detecting whether or not the recording medium is mounted on the disk drive unit, and a first recording medium detected by the loading detection means and before Said disc holder moves controlled in response to the detection of the second recording medium by the insertion detection means, said first recording medium is held by the first holding groove, it sent out to the outside of the housing through the insertion outlet Control means for performing an unloading operation and a loading operation for holding the second recording medium in the second holding groove and mounting the disk on the disk drive unit.

In the present invention, when the second recording medium is inserted into the insertion / ejection port in a state where the first recording medium is mounted on the disk drive unit, the second recording medium in which the disk holder is inserted was retained in the second retaining groove, is moved in the interior of the housing by the control operation of the control means, whereas taking no the second recording medium in the interior of the housing, a first that is instrumentation wearing disk drive unit An unloading operation in which the recording medium is held and removed in the first holding groove, and sent to the outside of the housing through the insertion / ejection port, and loading in which the second recording medium previously held in the second holding groove is mounted on the disk drive unit. The operation is performed together. Holding the disc holder of the first and second recording media is simply realized by inserting the first and second recording media into the first and second holding grooves by the respective movements or movements of the disc holder. Is done.

In the recording / reproducing apparatus according to the present invention, when the second recording medium is inserted into the insertion / ejection port while the first recording medium is mounted in the disk drive unit, the disk holder is triggered by this insertion. navigate in the interior of the housings, the second recording medium held in the second holding grooves, holding the first recording medium in the first holding groove removed from the disk drive unit, the housing through the insertion outlet and output feeding to the outside, a series of operations up to the second recording medium held by the second holding groove for mounting the disk drive unit is an inherent problem in because performed without front-loading interfering with each other The prevention of double loading can be realized with good usability without requiring any additional operation. The first and second recording media are securely held without requiring a complicated holding structure by being inserted into the first and second holding grooves formed on one surface of the disc holder, and have a simple structure. The present invention has excellent effects, such as achieving the above.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a side sectional view schematically showing the structure of a recording / reproducing apparatus according to the present invention. This recording / reproducing apparatus has a disk drive unit 2 in a rectangular box-shaped housing 1 partially shown in the figure. And an optical disk apparatus that includes the recording / reproducing head 3 and uses the optical disk D as a recording medium.

  On the front surface of the housing 1 (left side surface in the figure), an insertion / discharge port 10 is provided for inserting the optical disk D into the housing 1 and discharging the optical disk D to the outside. Inside the housing 1, a feed roller 11 is placed horizontally along the upper edge of the inner opening of the insertion / discharge port 10. The feed roller 11 is a drive roller that rotates around an axis by transmission from a drive motor (not shown). A driven roller 12 that is parallel to the feed roller 11 and is opposed to the feed roller 11 with an appropriate gap therebetween. Is laid horizontally.

  An insertion sensor 13 for detecting whether or not the optical disk D is inserted into the insertion / ejection port 10 is disposed on the rear side of the feed roller 11. This insertion sensor 13 can be constituted by, for example, an optical sensor that projects light toward the existence area of the target optical disc D and captures reflected light from the optical disc D. It can also be constituted by a microswitch that is turned on by direct contact.

  The disk drive unit 2 includes a drive motor 20 fixed to the bottom surface of the housing 1 and a rotary spindle 21 fixed to the output end of the drive motor 20, and is coaxial with the upper surface of the rotary spindle 21. The optical disk D mounted on the optical disk D is rotated at a predetermined speed by the rotation of the drive motor 20. The recording / reproducing head 3 is close to and opposed to the recording surface (lower surface) of the optical disk D mounted on the rotary spindle 21, and is moved in the radial direction along the recording surface by the operation of a driving means (not shown). It has a known configuration in which information is recorded or reproduced by irradiating the recording track of the recording surface positioned by the rotation of D with light.

  In addition, a disc holder 4 for transferring the optical disc D between the insertion / ejection port 10 and the disc drive unit 2 is disposed inside the housing 1. The disk holder 4 moves in a direction (front-rear direction) in contact with and away from the insertion / discharge port 10 opened in the front surface of the housing 1 and in a direction (up-down direction) in contact with and away from the disk drive unit 2 disposed on the bottom surface of the housing 1 ) Is a rectangular block supported so that it can be moved, and has a stepped surface on the opposite side of the insertion / discharge port 10 with the lower half protruding toward the insertion / discharge port 10. A first holding groove 40 and a second holding groove 41 having a width capable of inserting the optical disk D are formed at the lower and upper portions of the surface.

  FIG. 2 is a perspective view showing an example of a support structure for the disc holder 4. In the figure, reference numeral 42 denotes a front / rear feed screw shaft for moving the disc holder 4 back and forth. The front / rear feed screw shaft 42 is installed inside the housing 1 with its axial length direction back and forth, one end is connected to the output end of the front / rear feed motor 43, and the middle part has a front / rear slider 44. Are screwed together. When the longitudinal feed motor 43 is rotationally driven by the above configuration, the longitudinal feed screw shaft 42 is rotated in both forward and reverse directions, and the forward / backward slider 44 is screwed in the screw portion accompanying forward / reverse rotation of the longitudinal feed screw shaft 42. Accordingly, the longitudinal feed screw shaft 42 moves in the axial length direction, that is, the longitudinal direction.

  A vertical feed motor 45 is fixed on the upper surface of the front / rear slider 44 that moves back and forth in this manner. An output end of the vertical feed motor 45 is connected to a vertical feed screw shaft 46 extending upward, and a vertical slider 47 is screwed in the middle of the vertical feed screw shaft 46. When the vertical feed motor 45 is rotationally driven by the above configuration, the vertical feed screw shaft 46 is rotated in both forward and reverse directions, and the vertical slider 47 is threaded by the screw portion accompanying forward and reverse rotation of the vertical feed screw shaft 46. Thus, the vertical feed screw shaft 46 moves in the axial direction, that is, in the vertical direction.

  The disk holder 4 is connected to the upper and lower sliders 47 via a connecting rod 48 projecting from the side surface, and is supported with the stepped surface where the first holding groove 40 and the second holding groove 41 are open facing forward as shown in the figure. ing. The disk holder 4 supported in this manner moves up and down together with the vertical slider 47 according to the forward / reverse drive of the vertical feed motor 45, and together with the front / rear slider 44 and the vertical slider 47 according to the forward / reverse drive of the forward / backward feed motor 43. By the combination of the vertical movement and the forward / backward movement, the housing 1 is appropriately positioned with respect to the insertion / ejection port 10 provided on the front surface and the disk drive unit 2 provided on the bottom surface. be able to.

  The support structure shown in FIG. 2 is an example of a structure for supporting the disc holder 4 so as to be movable up and down and back and forth. The support structure of the disc holder 4 is a combination of various conventionally known linear motion mechanisms. Can be realized.

  FIG. 2 also shows how the first holding groove 40 and the second holding groove 41 of the disc holder 4 are formed. The first holding groove 40 and the second holding groove 41 have openings on the stepped surface of the front portion of the disk holder 4 that have a width that allows insertion of the optical disk D to be held. As shown by a broken line in the figure, it is formed with an arc-shaped bottom corresponding to the outer shape of the optical disk D, and these holding grooves 40 and 41 are formed in the holding grooves 40 and 41 as shown by a two-dot chain line in the figure. The optical disks D and D that are inserted and held are restrained by contact with the bottom surfaces of the respective holding grooves 40 and 41, and are displaced in the front-rear direction so that the upper optical disk D is in front of the lower optical disk D. In the horizontal direction, the upper and lower optical discs D and D are configured to be stably held in a state where they are aligned without positional deviation.

  A disk clamper 5 is disposed inside the housing 1 at an upper position of the disk drive unit 2. This disc clamper 5 is attached to the tip of a clamper arm 50 pivotally supported at one side of the rotary spindle 21 at a slightly upper position, and responds to the swing of the clamper arm 50 by transmission from a driving means (not shown). The optical disk D is configured to move up and down and descend onto the rotating spindle 21 when moving downward, and to hold the optical disk D between the rotating spindle 21 and the rotating spindle 21.

  Further, a loading sensor 14 for detecting whether or not the recording medium D is mounted on the rotary spindle 21 is disposed below the disk drive unit 2. The loading sensor 14 can be constituted by, for example, an optical sensor that projects light toward an existing area of the recording medium D mounted on the rotary spindle 21 and captures reflected light from the optical disk D.

  The output of the loading sensor 14 is given together with the output of the insertion sensor 13 to the loading control unit 6 shown as a functional block in the figure. The loading control unit 6 feeds the optical disk D inserted into the insertion / ejection port 10 into the housing 1, removes the loading operation for mounting the disk driving unit 2, and the optical disk D mounted on the disk driving unit 2, An unloading operation for feeding out the housing 1 from the insertion / discharge port 10 is performed. The output of the loading control unit 6 includes a forward / backward feed motor 43 for moving the disk holder 4 back and forth, and a vertical feed motor for moving the disc holder 4 up and down. 45 is provided via a separate drive circuit, and is further provided via a separate drive circuit to the drive motor of the feed roller 11 and the drive means of the clamper arm 50 that moves the disc clamper 5 up and down. ing.

  FIG. 3 is a flowchart showing the operation content of the loading control unit 6. In the following description, the optical disk loaded in the disk drive unit 2 is referred to as the first optical disk D, and the optical disk inserted into the insertion / ejection port 10 is referred to as the second optical disk D ′.

  The loading control unit 6 starts operation in response to power supply when the power switch is turned on, and monitors the output of the insertion sensor 13 given to the input side to determine whether or not the second optical disk D ′ is inserted ( Step 1). As a result, when it is determined that the second optical disc D ′ has not been inserted, the loading control unit 6 performs a standby operation that repeats the determination of the presence / absence of insertion without shifting to the following control operation.

  On the other hand, if it is determined in step 1 that the second optical disc D ′ is inserted, the loading control unit 6 then takes in the output of the loading sensor 14 given to the input side and whether or not the first optical disc D is mounted. Is determined (step 2). In this step 2, when it is determined that the first optical disk D is not mounted, the second optical disk D ′ inserted into the insertion / ejection port 10 is sent into the housing 1 and mounted on the disk drive unit 2. (Step 3), and if it is determined in step 2 that the first optical disk D is mounted, the optical disk D is removed from the disk mounting portion 2 and the outside of the housing 1 through the insertion / discharge port 10 A series of unloading operations sent out to the second optical disk D ′ and the above-described loading operation for the second optical disc D ′ are performed together (step 4). After these operations are completed, it is determined whether or not the power switch is turned off (step 5). If the power switch is not turned off, the process returns to step 1 to monitor whether or not the second optical disc D 'is newly inserted. If the above-described standby operation is continued and an off operation is performed, the series of operations is terminated.

  4 to 9 are explanatory diagrams of the loading and unloading combined operation in the recording / reproducing apparatus according to the present invention. FIG. 1 shows a state during a recording / reproducing operation. A first optical disk D mounted on the disk drive unit 2 includes a rotating spindle 21 and a disk clamper 5 that descends on the rotating spindle 21. Are rotated by transmission from the drive motor 20, and information is recorded or reproduced by light irradiation from the recording / reproducing head 3 onto the recording surface.

  At this time, the second optical disk D ′ does not exist in the detection area of the insertion sensor 13, and the loading control unit 6 continues the standby operation described above for monitoring whether or not the second optical disk D ′ is inserted. . At this time, the first optical disk D is present in the detection area of the loading sensor 14, and the disk holder 4 is inserted and discharged in the front-rear direction as shown in FIG. 10 is positioned close to the feed roller 11 and the driven roller 12 installed inside 10 and in the vertical direction, a position where the second holding groove 41 formed in the upper half is aligned with the gap between the rollers 11 and 12 ( (Positioning position)

  FIG. 4 shows a state in which the second optical disk D ′ is inserted into the insertion / eject port 10 while the first optical disk D remains on the disk drive unit 2 after the recording / reproducing operation as described above is finished. is there. At this time, the feed roller 11 is in a non-driven state in which it can freely rotate, and the second optical disk D ′ inserted into the insertion / ejection port 10 is inserted into the gap between the feed roller 11 and the driven roller 12. As indicated by the arrows in the figure, the rollers 11 and 12 are guided by the rolling of the rollers 11 and pushed into the second holding groove 41 of the disk holder 4, and the tip is abutted against the bottom surface of the second holding groove 41. Is kept in the state. At this time, the feeding roller 11 may be retracted upward as indicated by the white arrow in the drawing so that the resistance associated with the rolling is not added to the second optical disc D ′ being inserted.

  The second optical disk D ′ inserted in this way reaches the detection area of the insertion sensor 13 by the passage of the feed roller 11 and is detected by the insertion sensor 13. Is determined. At this time, since the loading sensor 14 detects the first optical disk D remaining on the disk drive unit 2, the process proceeds to step 4 as a result of the determination in step 2, and the loading control unit 6 performs loading and unloading. The loading merge operation is executed as follows.

  In step 4, the loading controller 6 first issues an operation command to the drive means of the disc clamper 5, raises the disc clamper 5 as indicated by an arrow in the figure, and the first optical disc D on the rotating spindle 21. Is released, and an operation command is issued to the forward / backward feed motor 43 of the disk holder 4 at the above-described standby position, and is retracted by a predetermined length as indicated by an arrow in FIG. The held second optical disc D ′ is sent into the housing 1.

  This operation needs to be performed under the condition that the second optical disk D ′ is securely held in the second holding groove 41, for example, a touch sensor provided on the bottom surface of the second holding groove 41 or the like. This can be achieved by adding the detection of the second optical disk D ′ by the detection means or the detection of the pushing force applied to the disk holder 4 via the second optical disk D ′ as a condition for starting the operation.

  FIG. 5 shows a state after the above operation is completed, and the disc holder 4 retreating as described above has the opening edge of the first holding groove 40 and the peripheral edge of the first optical disc D on the disc drive unit 2. Is positioned at a position where a predetermined gap δ is secured. After completion of such backward movement, the loading control unit 6 issues an operation command to the vertical feed motor 45 of the disk holder 4 and lowers the disk holder 4 by a predetermined length as indicated by an arrow in FIG. As indicated by the two-dot chain line, the first optical disk D is positioned so that the opening of the first holding groove 40 is aligned with the peripheral edge. The gap δ is necessary for avoiding the collision of the descending disk holder 4 with the first optical disk D.

  Next, the loading control unit 6 issues an operation command to the forward / backward feed motor 43 of the disc holder 4 and moves the disc holder 4 forward by a predetermined length. FIG. 6 shows the state before and after such movement, and the disk holder 4 positioned as indicated by a two-dot chain line in the drawing advances to the position indicated by the solid line in the drawing by the lowering. The first holding groove 40 of the disc holder 4 is inserted with the peripheral edge of the first optical disk D on the disk drive unit 2 at the matching height position. The optical disk D is connected to the bottom surface of the first holding groove 40. It is stably held in a state where the outer periphery is abutted against. Note that this holding is performed by, for example, detecting the first optical disk by a detecting means such as a touch sensor provided on the bottom surface of the first holding groove 40 or pushing force applied to the disk holder 4 via the first optical disk D. It can also be configured to confirm by detection.

  After the completion of such holding, the loading control unit 6 issues an operation command to the vertical feed motor 45 and the forward / backward feed motor 43 of the disc holder 4 to raise the disc holder 4 by a predetermined length and then move forward by a predetermined length. Eggplant. By this operation, the first optical disk D held by the disk holder 4 is removed by lifting the disk drive unit 2 from the rotary spindle 21 and then moved toward the insertion / ejection port 10.

  FIG. 7 shows the state after the movement. The lifting of the first optical disk D by the upward movement of the disk holder 4 is a high position where the optical disk D is aligned between the feed roller 11 and the driven roller 12. By the advancement in this state, the leading edge of the first optical disc D is inserted between the feed roller 11 and the driven roller 12 as shown in FIG. At this time, the second optical disk D ′ held in the second holding groove 41 also moves forward. As described above, the second optical disk D ′ is held by being displaced forward and backward with respect to the first optical disk D. Therefore, the leading edge of the second optical disk D ′ is as shown in FIG. It stops at a position where it does not interfere with the feed roller 11.

  Next, the loading control unit 6 issues an operation command to the drive motor of the feed roller 11, and rotates the feed roller 11 in the direction indicated by the arrow in FIG. Due to the rotation of the feed roller 11, a forward moving force is applied to the first optical disk D inserted between the driven roller 12 and the optical disk D is pulled out from the first holding groove 41 and inserted. It is sent out of the housing 1 through the discharge port 10. FIG. 8 shows this state. The rotation of the feed roller 11 can be started when the state shown in FIG. 7 is reached, for example, triggered by the detection of the first optical disk D by the insertion sensor 13.

  At the same time, the loading controller 6 issues an operation command to the forward / backward feed motor 43 of the disk holder 4 to move the disk holder 4 backward by a predetermined length, and the second optical disk D ′ held by the disk holder 4 is moved to the position shown in FIG. As shown in FIG. 3, the disk drive unit 2 is positioned coaxially with the rotary spindle 21. Finally, after the completion of the discharge of the first optical disk D, an operation command is issued to the vertical feed motor 45 of the disk holder 4, and the disk holder 4 is moved. After being lowered by a predetermined length, the second optical disk D ′ is placed on the rotating spindle 21 coaxially positioned as shown in FIG. Note that the lowering of the disk holder 4 may be started when the ejection completion state shown in FIG. 9 is reached, for example, triggered by the change of the first optical sensor D to the non-detection by the insertion sensor 13.

  Finally, the loading control unit 6. An operation command is issued to the forward / backward feed motor 43 and the vertical feed motor 45 of the disc holder 4 to return the disc holder 4 to the standby position, and an operation command is issued to the drive means of the disc clamper 5. As indicated by the symbol, the disk clamper 5 is lowered, and the second optical disk D 'on the rotating spindle 21 is clamped and fixed to complete a series of operations.

  As a result of the determination in step 2, the loading operation of the second optical disc D 'performed in step 3 is performed by using the first optical disc D' held by the disc holder 4 as shown in FIG. It is possible to perform the procedure of pulling it back to the front and rear position, lowering it as it is, and transferring it to the rotating spindle 21 of the disk drive unit 2. Further, for example, the unloading operation of the first optical disc D performed in response to the switch operation by the user can be performed by the operations shown in FIGS.

  As described above, in the recording / reproducing apparatus according to the present invention, the second optical disk D is left in the disk drive unit 2 in the housing 1 and a new second is inserted into the insertion / ejection port 10 opened in the front surface of the housing 1. When the second optical disk D ′ is inserted, the loading of the second optical disk D ′ is performed together with the unloading of the first optical disk D mounted on the disk drive unit 2, The first optical disc D is ejected outside the housing 1 without interfering with the second optical disc D ′.

  Therefore, the occurrence of double loading can be reliably prevented without requiring any additional operation, and good usability can be obtained. In addition, since a series of operations are performed using new insertion into the insertion / ejection port 10 as a trigger, there is no possibility that problems such as scratches and bending of the optical disk occur due to repeated repeated insertion operations.

  In the above embodiment, an example of application to an optical disc apparatus using an optical disc as a recording medium has been described. However, the present invention is applied to a recording / reproducing apparatus using another disc-shaped recording medium such as a magnetic disc. It goes without saying that is also applicable.

1 is a side sectional view schematically showing a configuration of a recording / reproducing apparatus according to the present invention. It is a perspective view which shows an example of the support structure of a disc holder. It is a flowchart which shows the operation | movement content of a loading control part. It is explanatory drawing of loading and unloading merge operation | movement in the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of loading and unloading merge operation | movement in the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of loading and unloading merge operation | movement in the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of loading and unloading merge operation | movement in the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of loading and unloading merge operation | movement in the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of loading and unloading merge operation | movement in the recording / reproducing apparatus which concerns on this invention.

Explanation of symbols

1 Housing 2 Disc Drive Unit 4 Disc Holder 5 Disc Clamper 6 Loading Control Unit
10 Insertion outlet
11 Feed roller
13 Insertion sensor
14 Loading sensor
40 First retaining groove
41 2nd holding groove D 1st optical disk D '2nd optical disk

Claims (1)

In a recording / reproducing apparatus configured to perform loading and unloading of a disk-shaped recording medium with respect to a disk drive unit provided in the housing from the front surface of the housing,
An insertion / exhaust port opened in front of the housing;
The first holding groove and the second holding groove that are formed with a width that allows the recording medium to be inserted are provided on one surface facing the insertion / discharge port, and the insertion / discharge port is provided inside the housing. A disc holder that moves in a direction of contact and separation and a direction of contact and separation of the disc drive unit;
An insertion detecting means for detecting whether or not a recording medium is inserted into the insertion / discharge port;
Loading detection means for detecting whether or not a recording medium is attached to the disk drive unit;
The disk holder is moved and controlled in accordance with detection of the first recording medium by the loading detection means and detection of the second recording medium by the insertion detection means, and the first recording medium is held in the first holding groove . The unloading operation for feeding the outside of the housing through the insertion / discharge port and the loading operation for holding the second recording medium in the second holding groove and mounting the disk on the disk drive unit are performed. And a control means.

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