JPH11273214A - Disk player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure of a shutter sliding mechanism and to provide a disk player which is made so as to be placed at an information reproducing position or an information recording position whilst a shutter due to a shutter opening and closing mechanism at the time of conveying a disk cartridge is made from a closed state to an opened stated. SOLUTION: In a disk player capable of loading a disk cartridge 40 in which a disk shaped recording medium 41 is housed and on which a shutter 42 performing a slide in order to expose the information surface of the medium 41 is attached, this device is provided with a conveying mechanism 61 conveying the disk cartridge 40 to the information reproducing position and the information recording position and a shutter sliding mechanism 50 sliding the shutter 42 being on the cartridge 40 and the shutter 42 is made so as to be placed at a slide intermediate position when the cartridge 40 is placed at the information reproducing position or the information recording position and so as to be placed at a slide terminal position when the cartridge 40 is placed at other positions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk player for reproducing information from a disk-shaped recording medium or recording information on the disk-shaped recording medium, and more particularly to a disk player provided on a disk cartridge for accommodating the disk-shaped recording medium. The present invention relates to a disc player in which the relationship between the shutter opening / closing timing and the information reproduction position or recording position is improved.

[0002]

2. Description of the Related Art As is well known, a disk cartridge accommodating a disk-shaped recording medium is provided with a slidable shutter for appropriately exposing the information surface of the disk-shaped recording medium. Normally, this shutter is closed to protect the disk-shaped recording medium in the disk cartridge from the external environment. for that reason,
In a conventional disk player, when reproducing information from the information surface of the disk-shaped recording medium as described above, or when recording information on the information surface, the disk cartridge is transported to a predetermined position by a transport mechanism, and The shutter is opened by a shutter opening / closing mechanism attached to the disc player to make it fully open, the information surface of the disc-shaped recording medium is exposed, and the information surface exposed by the optical pickup provided in the disc player is Information has been reproduced or information has been recorded on an information surface exposed by an optical pickup and a magnetic head.

[0003]

The above-mentioned disc player has the following disadvantages. First, when the disc cartridge is positioned at the information reproducing position in the disc player, the shutter is fully opened by the shutter opening / closing mechanism of the disc player, and the disc cartridge is further moved from the position to the information recording position in the disc player. Accordingly, in the case of a disk player in which the above-mentioned magnetic head is slid into contact with the information surface of the disk-shaped recording medium to record information in conjunction with the movement, the disk is moved from the information reproducing position to the information recording position. When the cartridge is further moved, the shutter opening / closing mechanism of the disk player is moved together with the movement of the disk cartridge, or the shutter opening / closing mechanism is detached from the disk cartridge in the above-described state, and another shutter opening state is maintained. Configuration required It was. Therefore, the structure for moving or detaching the transport mechanism and the shutter opening / closing mechanism causes the disc player to become complicated and large,
As a result, the size of the disc player has been increased, and the number of components has increased, resulting in an increase in manufacturing costs.

On the other hand, separately from the above, the information reproducing position and the information recording position in the disk player are set to the same position, the shutter is fully opened at that position, and the magnetic head is attached to the information surface of the disk-shaped recording medium. In the case of a disc player in which information is recorded by sliding contact, the transport mechanism and the disk cartridge are separated from each other, and then the magnetic head is driven by the transport mechanism so as to slide on the information surface of the disk cartridge. Or
It was necessary to newly provide a magnetic head drive mechanism for driving the magnetic head. Therefore, if the transport mechanism is further moved or a magnetic head drive mechanism for driving the magnetic head is newly adopted, the structure of the disk player is further complicated or enlarged. With the increase in the number of parts, an increase in the manufacturing cost of the disk player was inevitable.

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the conventional disk player, the object of the present invention is to simplify the structure of a shutter slide mechanism, and to change a shutter by a shutter opening and closing mechanism from a closed state to an open state when transporting a disk cartridge. It is another object of the present invention to provide a disc player in which an information reproducing position and an information recording position are set during the recording.

[0006]

According to a first aspect of the present invention, a disk-shaped recording medium is accommodated and the information surface of the disk-shaped recording medium is exposed. What is claimed is: 1. A disc player capable of loading a disc cartridge with a sliding shutter mounted thereon, comprising: a transport mechanism for transporting the disc cartridge to an information reproducing position and an information recording position; and a shutter sliding mechanism for sliding a shutter on the disc cartridge. Wherein the shutter is at a slide intermediate position when the disk cartridge is at one of the information reproducing position and the information recording position, and is at a slide end position when the disk cartridge is at the other position.

According to a second aspect of the present invention, the disc player includes a disc rotating mechanism for rotating the disc-shaped recording medium, and the disc-shaped recording medium is moved before the shutter of the disc cartridge reaches the intermediate position. It is characterized by being loaded into the disk rotation mechanism.

According to a third aspect of the present invention, the disc player includes information reading means for reading information from the disc-shaped recording medium, and information recording means for recording information on the disc-shaped recording medium, The shutter is at a slide intermediate position when the disc cartridge is at the information reproducing position, and reads information from the disc-shaped recording medium by the information reading means, and the shutter slides when the disc cartridge is at the information recording position. At the end position, information is recorded on a disk-shaped recording medium by the information recording means.

[0009]

According to the first aspect of the present invention, there is provided a disk player capable of loading a disk cartridge in which a disk-shaped recording medium is accommodated and a shutter is mounted to slide to expose an information surface of the disk-shaped recording medium, A transport mechanism for transporting the disk cartridge to an information reproducing position and an information recording position; and a shutter sliding mechanism for sliding a shutter on the disk cartridge. When the disc is in one of the positions, it is at the slide intermediate position, and when it is in the other, it is at the slide end position. And information recording position It can become. Then, the information surface of the disc-shaped recording medium can be exposed only when the information on the information surface of the disc-shaped recording medium is reproduced or when the information is recorded on the information surface. The information side can be protected. Further, the number of transport components of the disk player can be reduced, and the size and cost can be reduced.

In the invention according to claim 2, the disk player has a disk rotating mechanism for rotating the disk-shaped recording medium, and the disk-shaped recording medium is moved before the shutter of the disk cartridge reaches the intermediate position. Since the disc cartridge is loaded in the disc rotating mechanism, the disc-shaped recording medium in the disc cartridge can be already driven to rotate when the shutter of the disc cartridge is at the intermediate slide position. Therefore, when the shutter of the disk cartridge is at the slide intermediate position, the disk-shaped recording medium can take either the information reproduction position or the information recording position.

[0011] In the invention according to claim 3, the disc player comprises information reading means for reading information from the disc-shaped recording medium, and information recording means for recording information on the disc-shaped recording medium, The shutter is at a slide intermediate position when the disc cartridge is at the information reproducing position, and reads information from the disc-shaped recording medium by the information reading means, and the shutter slides when the disc cartridge is at the information recording position. At the end position, information is recorded on the disc-shaped recording medium by the information recording means, so when the disc cartridge is located at the information reproducing position, the shutter of the disc cartridge is half-opened, that is,
The information surface of the disc-shaped recording medium can be exposed only in a necessary range when reproducing the information on the information surface of the disc-shaped recording medium, and the information surface of the disc-shaped recording medium can be protected. When the disc cartridge is located at the information recording position, the shutter of the disc cartridge can be fully opened. Further, it is not necessary to employ complicated transport operation components for operating the transport mechanism, and the transport mechanism can be simply operated with simple components.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to illustrated embodiments. FIGS. 1 to 5 are explanatory views for explaining a disc player according to an embodiment of the present invention. In FIG. 1, the disc player 10 is provided inside the cartridge holder 20 on one side of the cartridge holder 20. A servo mechanism 30 that can move back and forth along the plurality of guide grooves 21 is mounted. Further, on one side of the cartridge holder 20, a shutter slide mechanism 50 for sliding a shutter 42 of the disk cartridge 40 described later is attached. On the other side of the cartridge holder 20, the disc cartridge 40 is transported in the front-rear direction, and the servo mechanism 30 is moved up and down and moved back and forth to move the disc cartridge 40 to the information reproducing position and the information recording position. A transport mechanism 60 for transport and a drive motor 70 as a drive source for driving the transport mechanism 60 are provided.

More specifically, the cartridge holder 20
Has an opening 22 of an appropriate size on the front side of the cartridge holder 20, and a disk-shaped recording medium 41 is formed through the opening 22.
Is inserted into the cartridge holder 20 or pulled out of the cartridge holder 20. At this time, the shutter 42 for protecting the disk-shaped recording medium 41 in the disk cartridge 40 is located on one side of the cartridge holder 20, and the sliding direction of the shutter 42 is The direction corresponds to the insertion / removal direction 40. Further, a plurality of engagement pins 31 of a servo mechanism 30 to be described later are slidably engaged with a plurality of guide grooves 21 provided in the front-rear direction on one side of the cartridge holder 20, respectively. The servo mechanism 30 can move up and down and reciprocate inside the cartridge holder 20.

As shown in FIG. 2, the servo mechanism 30 has a frame shape, and a plurality of engaging pins having a shape insertable into each guide groove 21 of the cartridge holder 20 are provided on one side of the servo mechanism 30. 31 is provided so as to protrude in the horizontal direction. On the other side, an elevating pin 32 that moves up and down along an inclined groove 63 described later is provided so as to protrude outward in the horizontal direction. The above servo mechanism 3
A turntable 33 as a disk rotation mechanism for rotatably holding the disk-shaped recording medium 41 in the inserted cartridge 40 is mounted at the center of the cartridge 0.
The turntable 33 is rotationally driven by a spindle shaft 33a of a rotational drive spindle motor 33A attached to the lower surface of the servo mechanism 30 (see FIG. 3).

In the servomechanism 30, a guide shaft 35 whose one end is pivotally supported by a fixing member 34 and a worm gear 36 are arranged so as to be substantially parallel from one side to the other side. I have. The worm gear 36
A driven gear 36a meshes with the other end of the driven gear 36a. The driven gear 36a is driven to rotate by meshing with a driving gear 36b that is driven to rotate by a small motor (not shown) mounted on the servo mechanism 30. The other end of the guide shaft 35 is fitted and supported by a fitting part (not shown) of the servo mechanism 30. A pickup 37 is mounted on the guide shaft 35 and the worm gear 36 as information reading means for reciprocating between one side and the turntable 33 side. The pickup 37 can reciprocate by sliding on the guide shaft 35 while meshing with the worm gear 36 that is driven to rotate. In addition, at the position of the pickup 37 which is on the normal line of the spindle shaft 33a,
A lens 37a for irradiating an information reading laser beam is mounted.

At the rear end of the pickup 37,
As information recording means for recording information on the disk-shaped recording medium 41, a recording mechanism 38 having a magnetic head 38a capable of moving up and down as the servo mechanism 30 moves back and forth is mounted. The recording mechanism 38 is provided with an information recording surface direction of the disk-shaped recording medium 41 by an elastic member (not shown), that is, a downward movement behavior, and is used when the cartridge holder 40 is not loaded in the servo mechanism 30. Is maintained in an upright state by a head lifter 39 which comes into contact with the recording mechanism 38. The head lifter 39 is rotatably attached to the back side of the servo mechanism 30 by a rotation shaft 39a, and applies a force in a rising direction against the downward movement of the recording mechanism 38 by a spring (not shown). Have been. When a disk cartridge 40 is loaded in the servo mechanism 30 and the servo mechanism 30 moves to the rear end of the cartridge holder 20, the head lifter 39
The head lifter 39 is rotated by the sliding pin 39b provided at the lower part of the recording mechanism 38 being moved upward along the inclined portion 20a provided on the cartridge holder 20. Depart from.
Then, the standing state of the recording mechanism 38 is released, and the magnetic head 38a is urged to the information recording surface of the disk-shaped recording medium 41.

At an appropriate position on one side of the cartridge holder 20, a shutter slide mechanism 5 for sliding a shutter 42 of the disc cartridge 40 is provided.
0 is provided. This shutter slide mechanism 50
The mounting position is such that when the conveyed disc cartridge 40 is at either the information reproducing position or the information recording position, the shutter 42 of the disc cartridge 40 is set to the slide intermediate position, and When it is present, it is provided at a position to be the slide end position. As shown in FIG. 5, the shutter slide mechanism 50 includes a shutter slide mechanism main body 51 formed by bending a plate-like member and a side hole 51a and an overhang plate 52 provided. One end of a bent leaf spring 53 that slides and engages with the concave portion 42a provided in the shutter 42 is appropriately projected from the side hole 51a, and the other end is fixed to the shutter slide mechanism main body 51. The overhang plate 52 has a flat plate shape and can be inserted into a guide groove 40 a provided in the disk cartridge 40. And
The overhang plate 52 allows the shutter 42 to slide by pushing a not-shown pressing spring of the disk cartridge 40 that pushes the shutter 42 so as not to open while inserting through the guide groove 40a. It is.

A transport mechanism 60 mounted on the other side of the cartridge holder 20 transports the disk cartridge 40 in a direction substantially parallel to the sliding direction of the shutter 42 of the disk cartridge 40. The disc cartridge 40 is transported to an information reproducing position and an information recording position by a carrier 61 which is attached to the cartridge holder 20 so as to be able to move back and forth in the front-rear direction. The carrier 61 is formed of a substrate 61a and side plates 61b and 61c having a horizontal F-shape, and can reciprocate along a transport groove 23 provided in the front-rear direction on the upper surface of the cartridge holder 20. It has become.

As shown in FIG. 4, a side plate 61b of the carrier 61 is formed downward along the other side surface of the cartridge holder 20, and an upper portion of the side plate 61b is provided with the cartridge holder 20. A side plate 61c inserted into the cartridge holder 20 from the side opening 24 provided on the other side, a carrier lock (not shown) and a locking hook are mounted. The carrier lock locks the carrier 61 into the cartridge holder 20.
When the disk cartridge 40 is inserted into the cartridge holder 20, the lock is released and the carrier 61 can be moved.
The locking hook engages a part of one side surface of the cartridge holder 20 to lock the cartridge holder 20 to the carrier 61.

By the way, the side plate 61b of the carrier 61
On the lower surface of the rack portion 6 in an appropriate range in the front-rear direction.
2 is formed and can be engaged with a drive gear 75 described later, so that the carrier 61 can be moved in the front-rear direction by rotating the drive gear 75. On the other hand, the carrier 61
The side plate 61c is located inside the other side surface of the cartridge holder 20, and the side surface of the side plate 61c includes a parallel groove 63a in which the elevating pin 32 of the servo mechanism 30 is slidably engaged. A groove 63 is provided. When the carrier 61 moves in the front-rear direction, the servo mechanism 3 moves along the inclined groove 63.
The 0 lifting pin 32 can be moved up and down so that one side (the lifting pin 32) of the servo mechanism 30 can be moved toward and away from the cartridge holder 20.
In addition, the carrier 61 further moves even after the elevating pin 32 comes into contact with the upper end of the inclined groove 63, so that the carrier 61 and the servo mechanism 30 can be integrally moved. The servo mechanism 30 can be moved in the front-rear direction along the guide groove 21 of the cartridge holder 20.

At the rear end position of the other side of the cartridge holder 20, a drive motor 70 as a drive source for driving the transport mechanism 60 is mounted. A drive pulley 71 is attached to a drive shaft 70a of the drive motor 70. A V-belt 72 is stretched between the cartridge holder 20 and a driven pulley 73 supported on the other side of the cartridge holder 20. The small gear 73a formed integrally with the driven pulley 73 is
It is arranged so as to mesh with the reduction gear 74 which is pivotally supported on the other side. A drive gear 75 is mounted coaxially with the inside of the reduction gear 74 so as to be able to mesh with the rack portion 62 provided on the lower surface of the side plate of the carrier 61. Also, on the inner peripheral side of the reduction gear 74,
A semi-circular groove (not shown) is provided, and a projection 75a that is locked at the groove end of the semi-circular groove is provided on the drive gear 75. Then, the drive gear 75 is driven to rotate after the reduction gear 74 is driven about half a turn (see FIGS. 1 and 4).

Next, the operation state of the disk player 10 of the present invention having the above configuration will be described with reference to FIGS. In FIG. 6 and subsequent figures, a part of the configuration is omitted to explain the operation state of the disc player 10, and thus the omitted part is shown in FIGS.
Please refer to. First, FIG. 6A shows the cartridge holder 2 mounted on the disc player 10.
0 is a schematic top view showing a state in which a disc cartridge 40 is inserted into an opening 22 provided on the front surface of the disc cartridge 0.
FIG. 1B shows a schematic side view. The carrier 61 is in front of the cartridge holder 20, that is,
It is located at the left end in the figure. In this state, the carrier 61
The rack portion 62 and the drive gear 75 have not yet engaged. The leaf spring 53 and the overhang plate 52 projecting from the side hole 51a of the shutter slide mechanism main body 51 have not yet contacted the disk cartridge 40.

When the cartridge 40 is inserted into the cartridge holder 20 to some extent,
The carrier lock (not shown) is released, and the carrier 61
Can be moved, and the disk cartridge 4
The engaging hook is engaged with an engaging hole (not shown) on the side surface of No. 0,
The disk cartridge 40 and the carrier 61 move integrally. At this time, the carrier 6
1 has a guide groove 2 behind the cartridge holder 20.
3 along with the carrier 61
And the drive gear 75 are engaged with each other, a rotation switch (not shown) of the drive motor 70 is turned on, and the drive motor 70 is driven to rotate. The rotation of the drive motor 70 due to the start is performed by the drive pulley 71, the V belt 72, the driven pulley 73, the small gear 73a, and the reduction gear 74.
Is transmitted to. Then, the drive gear 75 starts rotating after the reduction gear 74 has been rotated about half a turn.

The disk cartridge 40 is conveyed to the rear of the cartridge holder 20 as the carrier 61 moves rearward by the rotation of the drive motor 70. Then, the disk cartridge 4
Until the center position of the turntable 0 and the center position of the turntable 33 on the servo mechanism 30 substantially coincide with each other, the parallel groove 6 provided in the side plate 61c of the carrier 61 is not used.
Since the lift pins 32 in 3a only slide in the parallel grooves 63a, there is no change in the position of the lift pins 32 even if the carrier 61 moves backward. Nor. At this time, the leaf spring 53 projecting from the side hole 51a of the shutter slide mechanism main body 51 is slidably contacted with the disk cartridge 40 and is pressed inside the side hole 51a. The overhang plate 52 is inserted through the guide groove 40a of the disk cartridge 40 (see FIG. 7).

The center position of the disk cartridge 40 and the turntable 33 on the servo mechanism 30
The disk cartridge 40 and the servo mechanism 30 start moving together when the center position of the disk cartridge 40 substantially coincides with the center position. That is, the cartridge holder 20 and the disk cartridge 40 are transported rearward as the carrier 61 moves rearward due to the rotational drive of the drive motor 70. At this point, the lift pins 32 in the parallel grooves 63 a of the side plate 61 c of the servo mechanism 30 move into the inclined grooves 63 with the movement of the carrier 61. Then, the lifting pin 32 starts moving upward along the inclined groove 63, thereby raising one side (elevating pin 32) of the servo mechanism 30, and thereafter the elevating pin 32 is moved to the upper end of the inclined groove 63. The carrier 61 and the servomechanism 30 start moving as a single body by contact, so that the guide groove 2 of the cartridge holder 20 is moved.
When the engaging pin 31 of the servo mechanism 30 engaged with the first member 1 starts moving along the guide groove 21, the other side (engaging pin 31) side moves while the servo mechanism 30 moves backward. Make a rise. Then, the disk-shaped recording medium 41 of the disk cartridge 40 is placed on the turntable 33 of the servo mechanism 30 in proximity to the cartridge holder 20. At this time, the leaf spring 53 projecting from the side hole 51a of the shutter slide mechanism main body 51 abuts and engages with the concave portion 42a of the disk cartridge 40, and the overhang plate 52 is moved to the guide groove 40a in the disk cartridge 40. The pressurizing spring (not shown) of the disc cartridge 40 which pushes the shutter 42 so as not to open by pressing the shutter 42 is pushed in.
2 is slidable.

When the mounting of the disk cartridge 40 on the servo mechanism 30 is completed, the lifting pin 32 comes into contact with the upper end of the inclined groove 63, so that the carrier 61 and the servo mechanism 30 move backward integrally. It becomes possible. When the carrier 61 further moves a predetermined distance, the side hole 51 of the shutter slide mechanism main body 51 is moved.
a leaf spring 53 and an overhang plate 52 projecting from
In cooperation with the above, the shutter 42 is slid open, and the information surface of the disc-shaped recording medium 41 is exposed, so that the information reproducing position can be set. At this information reproducing position, the shutter 42 of the disc cartridge 40 is not fully opened, but is opened to the extent that the information reading laser beam from the lens 37a can be applied to the disc-shaped recording medium 41. Then, the rotation of the drive motor 70 is stopped by a switch (not shown), and
1 is also stopped, and the disc-shaped recording medium 41 in the disc cartridge 40 is reproduced (see FIG. 9).

When recording information on the disk-shaped recording medium 41, the stopped drive motor 70 is further rotated to move the carrier 61 further backward, that is, rightward in the drawing. Then, with the further movement of the carrier 61, the servo mechanism 30 and the disk cartridge 40 move rearward, so that the shutter 42 is further opened by the shutter slide mechanism 50 fixed to the cartridge holder 20. Then, it is positioned at the slide end position, and the information surface of the disk-shaped recording medium 41 can be further exposed to set the information recording position. At this information recording position, the shutter 42 of the disc cartridge 40 is fully open. When the servo mechanism 30 and the disc cartridge 40 move together and move to the information recording position, the sliding pin 39b of the head lifter 39 of the servo mechanism 30 rotates to move to a position above the inclined portion 20a. I do. As a result, the head lifter 39 rotates to move the recording mechanism 38 downward. At this time, since the shutter 42 of the disk cartridge 40 is slid and fully opened, information can be recorded by biasing the magnetic head 38a on the disk-shaped recording medium 41 (FIG. 10). reference).

According to such an embodiment, the servo mechanism 30 and the disk cartridge 40 are pressure-bonded only by the linear transport operation of the carrier 61 to the cartridge holder 20, and the recording mechanism 38 is extended upon extending the operation.
Can be performed, and the operating components of the transport mechanism can be reduced in size and integrated. Further, by merely reciprocating the carrier 61, the servo mechanism 30 is moved along the inclined groove 63 provided in the carrier 61.
Since the lifting pin 32 can be moved up and down, it is possible to easily form a structure for bringing the servo mechanism 30 into and out of contact with the cartridge holder 20.

[0029]

As is apparent from the above embodiment, according to the first aspect of the present invention, a shutter for accommodating a disk-shaped recording medium and sliding to expose an information surface of the disk-shaped recording medium is provided. A disc player capable of loading an attached disc cartridge, comprising: a conveyance mechanism for conveying the disc cartridge to an information reproducing position and an information recording position; and a shutter slide mechanism for sliding a shutter on the disc cartridge. The shutter is at the slide intermediate position when the disc cartridge is at one of the information reproducing position and the information recording position, and is at the slide end position when at the other position. While changing the shutter from the closed state to the open state, Te, it is possible to take the information reproducing position and the information recording position. Then, the information surface of the disc-shaped recording medium can be exposed only when the information on the information surface of the disc-shaped recording medium is reproduced or when the information is recorded on the information surface. The information side can be protected. Further, the number of transport components of the disk player can be reduced, and the size and cost can be reduced.

According to the second aspect of the present invention, the disc player has a disc rotating mechanism for rotating the disc-shaped recording medium, and the disc-shaped recording medium is such that the shutter of the disc cartridge reaches the intermediate position. Since it was previously loaded into the disk rotation mechanism,
When the shutter of the disk cartridge is located at the slide intermediate position, the disk-shaped recording medium in the disk cartridge can be driven to rotate. Therefore, when the shutter of the disk cartridge is at the slide intermediate position, the disk-shaped recording medium can take either the information reproduction position or the information recording position.

According to the third aspect of the present invention, the disc player includes information reading means for reading information from the disc-shaped recording medium and information recording means for recording information on the disc-shaped recording medium. The shutter is at a slide intermediate position when the disc cartridge is at the information reproducing position, and the information is read from the disc-shaped recording medium by the information reading means, and the shutter is at the information recording position. Sometimes, at the slide end position, information is recorded on the disc-shaped recording medium by the information recording means. Therefore, when the disc cartridge is located at the information reproducing position, the shutter of the disc cartridge is half-opened, that is, disc-shaped recording. Only the necessary range for information reproduction on the information side of the medium is displayed. It becomes possible to expose the information surface of Jo recording medium, it is possible to protect the information surface of the disc-shaped recording medium. When the disc cartridge is located at the information recording position, the shutter of the disc cartridge can be fully opened. Further, it is not necessary to employ complicated transport operation components for operating the transport mechanism, and the transport mechanism can be simply operated with simple components.

[Brief description of the drawings]

FIG. 1 is a schematic top view of a disc player to which the present invention is applied.

FIG. 2 is a schematic top view for explaining a main configuration of a servo mechanism in FIG. 1;

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 4 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 5 is a view taken in the direction of arrows CC in FIG. 1;

FIGS. 6A and 6B show a state in which a disk player is loaded with a disk cartridge to which the present invention is applied, wherein FIG. 6A is a schematic top view and FIG. 6B is a schematic side view.

FIGS. 7A and 7B show a state in which a disk cartridge to which the present invention is applied is loaded with a disk cartridge. FIG. 7A is a schematic top view, and FIG. 7B is a schematic side view.

FIGS. 8A and 8B show a state where a disk cartridge is loaded on a disk player to which the present invention is applied, wherein FIG. 8A is a schematic top view and FIG. 8B is a schematic side view.

9A and 9B show a state in which a disk cartridge is positioned at an information reproducing position of a disk player to which the present invention is applied, wherein FIG. 9A is a schematic top view and FIG. 9B is a schematic side view.

FIGS. 10A and 10B show a state in which a disk cartridge is positioned at an information recording position of a disk player to which the present invention is applied, wherein FIG. 10A is a schematic top view and FIG. 10B is a schematic side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Disc player 20 Cartridge holder 30 Servo mechanism 33 Turntable 37 Pickup 38 Recording mechanism 38a Magnetic head 40 Disk cartridge 41 Disk-shaped recording medium 42 Shutter 50 Shutter slide mechanism 60 Transport mechanism 70 Drive motor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masamitsu Ogawara 4-2610 Hanazono, Tokorozawa, Saitama Prefecture Pioneer Corporation Inside the Tokorozawa Plant (72) Inventor Yoshihiro Ichikawa 4-2610 Hanazono, Tokorozawa City, Saitama Pioneer Corporation Inside Tokorozawa Plant (72) Inventor Yuji Morita 4-2610 Hanazono, Tokorozawa City, Saitama Prefecture Pioneer Corporation Tokorozawa Plant

Claims (3)

[Claims] 1. A disc player capable of loading a disc cartridge containing a disc-shaped recording medium and having a shutter mounted to slide to expose an information surface of the disc-shaped recording medium, wherein the disc cartridge has an information reproducing function. A transport mechanism for transporting the disk cartridge to a position and an information recording position; and a shutter slide mechanism for sliding a shutter on the disk cartridge. The shutter is provided when the disk cartridge is at one of the information reproducing position and the information recording position. A disc player which is located at an intermediate position of a slide, and is located at a slide end position when being at the other end. 2. The disk player has a disk rotation mechanism for rotating the disk-shaped recording medium, and the disk-shaped recording medium is loaded on the disk rotation mechanism before the shutter of the disk cartridge reaches the intermediate position. 2. The disc player according to claim 1, wherein 3. The disc player comprises: information reading means for reading information from the disc-shaped recording medium; and information recording means for recording information on the disc-shaped recording medium. When the disc cartridge is at the information recording position, the shutter is at the slide end position when the disc cartridge is at the information recording position. 3. The disc player according to claim 2, wherein information is recorded on the disc-shaped recording medium by the information recording means.