JPH08306180A - Disk device - Google Patents

Abstract

PURPOSE: To properly place wiring between lines in a small space and by a signal line according to a current regarding a disk device for executing recording/reproducing of information from a loaded disk medium by an optical head. CONSTITUTION: In an optical head 45 provided in a driving unit as a part of a drive unit installed in a disk device, FPC 57 for transmitting/receiving a recording/reproducing signal between a mounted pickup part 45b is formed so as to be freely flexibly by providing the specified number of signal patterns 67 and openings 68a and 68b. Wiring is performed in a two laminated manner, being bent from a bending line A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device for recording / reproducing information on / from a mounted disk medium by an optical head.

[0002]

2. Description of the Related Art In recent years, FD (floppy disk) and C have been used as disk media as recording media.
D (Compact disc), LD (Laser disc),
MO (magneto-optical disk) and MD (mini disk) have been generalized, and disk devices using these are generally required to be thin. Further, there is a write-once type of CD, and a disk device for driving the CD is required to be thin, and it is desired that the wiring process therefor be performed in a small space and with an appropriate signal line. There is.

Here, FIG. 7 shows an exploded structural view of a conventional disk device. FIG. 7 shows a write-once optical disc (hereinafter referred to as C
A disk device 11 for driving a D.R) is shown. In the disk device 11, a printed circuit board 13 for control is arranged in a lower part of a main body case 12, and a drive unit 14 is arranged on the printed circuit board 13. The cover 15 is attached.

A front bezel 21 is attached to the front surface of the main body case 12, and an opening / closing insertion opening 22 and an eject button 23 are provided in the front bezel 21 and an eject hole 2 for manually ejecting.
4 are provided. The drive unit 14 is the drive unit 2
5, a slider 26, and a disc holder 27. A disc case 29 for accommodating the CD-R 28 is inserted into the disc holder 27, and a shutter 29a of the disc case 29 slides when the disc case 29 is inserted.
Show part of 28.

The drive unit 25 includes an optical head 3 on the chassis 31.
2 is attached, and the optical head 32 is guided in the radial direction of the CD-R 28 to be inserted into the guide rods 33a and 33b.
A head drive mechanism (32a, 32b) configured by, for example, a linear motor that moves along the track, an eject motor 26a that ejects the disk case 29 by sliding the slider 26, an eject mechanism including a gear 26b, and the like are provided.

In this case, electrical connection to the head drive mechanisms 32a and 32b for driving the movable optical head 32 is performed from both guide rods 33a and 33b side via a flexible printed board (FPC) 34a, and
Electrical connection of the signal processing system between the optical head 32 and the printed circuit board 13 is performed via the flat cable 34b (described in FIG. 8).

The slider 26 is for raising and lowering the disc holder 27, and has cam guides 35a, 35b having tapered grooves on cam plates 35 on both sides (one side is not shown) in the disc case insertion direction. Formed,
Correspondingly, it engages with a predetermined number of protrusions 36a, 36b formed on both side surfaces of the disc holder 27. Further, the disc holder 27 is provided with a turning lever 37 for sliding a shutter 29a of the disc case 29 when the disc case 29 is inserted.

In such a drive unit 14, when the disc holder 27 is not inserted into the disc case 29, the disc holder 27 is positioned above, and when the disc case 29 is inserted into the disc holder 27, the loading mechanism ( Slider 26 (not shown)
Slides forward (in the direction opposite to the disc case insertion direction), the disc holder 27 descends and enters the recording / reproducing state.

Then, the optical head 32 makes the disk medium 28
Information is recorded / reproduced by being moved and positioned by the head drive mechanisms 32a and 32b in the radial direction. Further, the disk case 29 (disk medium 28) is taken out by pushing the eject button 23 to rotate the eject motor 26a and slide the slider 26 in the depth direction.

Reference numeral 27a is a guide member for guiding the disc holder 27 when it is moved up and down, and 38 is an eject lever for manually moving the slider 26 in the depth direction to take out the disc case 27. Here, FIG.
7 shows a schematic bottom view of the drive unit shown in FIG. FIG.
In FIG. 7, as shown in FIG.
Head drive mechanism (linear motor) 32, 32 on both sides of
b is provided and the FPC 34 for energizing this
a extends from the bottom side and is electrically connected to the printed circuit board 13.

On the other hand, the optical head 32 is connected to the printed circuit board 13 via the flat cable 34b for transmitting / receiving signals for recording / reproducing, and has at least 20 signal lines (patterns) for signal processing. Are required, and these signal lines (patterns) are formed on the flat cable 34b.

On the back surface of the chassis 31 of the drive unit 25, insulators 39a and 39b formed of elastic members such as rubber are provided on both sides in the depth direction. The insulators 39a and 39b serve to reduce the impact on the drive unit 14 in the main body case during vibration.

[0013]

However, the optical head 32
Signals are transmitted and received via a flat cable 34b, and in the case of reproduction only such as a CD or a CD-ROM disk medium, the number of signal lines (patterns) is small and a straight FPC can be connected. There is a CD-R
In a disk medium such as 28, the number of signal lines (patterns) is increased for recording and reproduction to form two FPCs,
Alternatively, the above-mentioned flat cable 34b must be used, which causes a problem that a space for wiring increases.

That is, when a single FPC is used, the pattern through which a large current flows must be wide, and if 20 or more patterns including this pattern are formed, the FPC can be used in a thin apparatus. This is because they cannot be routed straightly, and because the intervals between the formed patterns are narrowed, the electrostatic capacitance is large, and they are easily affected by noise.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a disk device capable of appropriately performing a wiring process between lines by a signal line suitable for a small space and current.

[0016]

In order to explain the above-mentioned problems, in claim 1, when recording / reproducing information to / from a head with respect to a removable disk medium, a recording / reproducing signal is transmitted / received to / from the head. In the disc device in which the printed board is formed by a printed circuit board, a predetermined number of signal patterns are formed on the printed circuit board so that the printed circuit board is flexible, and the printed circuit board is wired in a bent state in the width direction.

According to a second aspect of the present invention, the head according to the first aspect is movable in the radial direction of the disk medium by being guided by a guide means, and a predetermined number of openings for penetrating the guide means are formed in the printed board. It According to a third aspect of the present invention, in the printed board according to the first or second aspect, the signal pattern to be formed has the same folding curve direction, and the predetermined signal patterns that are brought close to each other by the bending should be in an intersecting state. Form with an inclination.

[0018]

As described above, according to the first or second aspect of the invention, the guide means is appropriately passed through the printed board which is connected to the head and on which a predetermined number of signal patterns for transmitting and receiving the recording and reproducing signals are formed. The opening is formed and the wiring is bent in the width direction. As a result, the printed board can be arranged in a small space, and even if the pattern forming area of the printed board is enlarged to form a wide pattern for large current, a wide space can be secured between the patterns, and the static pattern can be maintained. Appropriate wiring can be performed by reducing the capacitance and improving the noise resistance.

According to the third aspect of the invention, the predetermined signal pattern on the printed board is formed to be inclined, and the signal patterns that are close to each other at the time of bending are made to intersect with each other. This makes it possible to further reduce the electrostatic capacitance and improve the noise resistance.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a block diagram of an embodiment of the present invention.
FIG. 1 is a perspective view of a drive unit 42 of a drive unit included in the disk device 41 of the present invention.
In FIG. 1, the drive unit 42 includes a spindle 44 provided with a spindle motor (not shown) for rotating a disk medium (described in FIG. 5) housed in a disk case in a resin chassis 43, for example. The chucking portion 44a attached to the tip of the is exposed and provided. Further, an optical head 45 for performing recording / reproducing with respect to the disk medium is provided, and the optical head 45 has guide rods 46a,
It is guided by 46b so as to be movable in the radial direction of the disk medium.

A rack 47 is provided on the optical head 45 and meshes with a gear 48. The gear 48 is integrated with a worm wheel 48a which meshes with a worm 49a provided on a rotation shaft of a carrier motor 49. . That is, as the carrier motor 49 rotates, the optical head 45 moves via the worm 49a, the worm wheel 48a, the gear 48, and the rack 47.

Further, an eject motor 50 is provided in the chassis 43, and the worm 5 provided on the rotating shaft of the eject motor 50.
0a meshes with the main gear 51 via a predetermined number of gears, and a cam 51a is formed on the main gear 51.
This cam 51a engages with a locking piece of a slider described later,
This is for sliding the slider in the depth direction by the rotation of the eject motor 50. A detection switch 52 for detecting the position of the cam 51a is provided near the cam 51a.

Further, a relay printed board 53, which is a relay board, is arranged on one side of the chassis 43. Electronic components such as a pickup amplifier 54 that amplifies a reproduction signal of the optical head 45 are mounted on the relay printed circuit board 53, and at least five connectors 55 _{1 to} 55 ₅ for connecting cords are mounted.

Then, the spindle motor (spindle 4
4 position (below 4) for rotating the disk medium.
Connector via flexible printed board (FPC) 56
55 ₁Connected to the optical head 45 for recording and reproduction.
Through the FPC 57, which is a printed board for
₂(Described in FIG. 2).

The carrier motor 49 and the eject motor 50 are connected to the connector 55 ₃ via the cord 58, and the detection switch 52 is connected to the connector 53 ₄ via the cord 59. From the relay printed circuit board 53, a connector 55 ₅ is connected to a main printed circuit board, which is a control board described later, through an FPC (or flat cable) 60.

In this way, the electrical wiring inside the chassis 43 of the drive unit 42 is concentrated on the relay printed circuit board 53, and the connection from the relay printed circuit board 53 to the main printed circuit board is made only by the FPC 60. A damper 61 is provided near one corner in the chassis 43, and the damper 61 is provided with a gear 61a. The gear 61a meshes with a rack formed on the slider, which will be described later, and buffers the sliding speed of the slider. The chassis 4 near the damper 61
An elevating guide member 62 is provided on the back wall of the disc 3, and the elevating guide member 62 is loosely fitted in a hole formed in a disc holder described later to guide the elevating and lowering of the disc holder.

Insulators 63 made of, for example, a rubber elastic member are provided at the four corners of the chassis 43, and holes are formed in the vertical direction. The insulator 63 is attached to mounting members (bosses) of a predetermined height that are integrally provided upright at four corners in the main body case, which will be described later, and is arranged in the main body case. In addition, the chassis 43 does not contact the bottom surface of the main body case and is in a floating state, and plays a role of buffering the vertical vibration of the drive unit 53.

In the vicinity of each of the insulators 63, horizontal insulators 64 made of, for example, a rubber elastic member are further provided, and a long hole is formed in the horizontal direction. In the hole of the horizontal insulator 64, a rod member (boss) having a predetermined height which is integrally erected with the main body case in the vicinity of a mounting member of the main body case, which will be described later, is loosely fitted, and a horizontal vibration of the drive unit is generated. Plays a buffering role against.

A predetermined number of locking pieces 65 are formed on both sides of the chassis 43 in the outward direction (described later). here,
FIG. 2 shows an explanatory view of the optical head of FIG. 2A is a perspective view of an optical head portion, and FIG. 2B is a plan view of an FPC connected to the optical head. In the optical head 45 shown in FIG. 2A, a pickup portion 45b is mounted on a base 45a that engages with the guide rods 46a and 46b, and the FPC 57 is bent on the pickup portion 45b so that one terminal portion is formed. Are connected.

Incidentally, the pickup section 46b is provided with a laser diode, a beam splitter, a mirror, a light receiving element, and the like, and an objective lens 45c is arranged on the surface thereof. The objective lens 45c is used for tracking and focusing. Each actuator is provided. Then, one terminal portion of the FPC 57 is connected to a terminal plate (not shown in the figure) for transmitting and receiving control signals for driving the laser diode, the light receiving element, and each actuator.

Therefore, as shown in FIG. 2B, the FPC 57 is a flexible one in which a signal pattern is formed on the film, and has a terminal portion 66a connected to the terminal plate of the optical head 45. A signal pattern 67 having a width as required is formed between the end portion 66b connected to the connector 55 ₂ of the relay printed board 53 described above. This FPC57 is
In the direction perpendicular to the width direction (the same direction as the signal pattern of the central portion), the bending is made at the folding curve A at the substantially central portion of the width.

Further, the FPC 57 has a polygonal curve A and the F
Two openings 68 that overlap when the PC 57 is bent
A and 68b are formed, and a mounting portion 69 is integrally formed near one of the terminal portions 66a, and an adhesive is applied to the mounting portion 69. A thin opening 68c for facilitating bending is formed in a portion where the signal pattern 67 corresponding to the folding curve A is not formed.

The FPC 57 shown in FIG.
The terminal portion 66a is connected to the terminal plate of the optical head 45 in the state of being bent by, and the mounting portion 69 is adhered and fixed to the optical head 45, whereby the wiring state shown in FIG. That is, the optical head 45 to which the FPC 57 is attached
Means that one guide rod 46b is penetrated through the openings 68a and 68b of the FPC 57 so as not to affect the movement of the head 45, and the other terminal portion 66b is connected to the connector 55 ₂ of the relay printed circuit board 53. It is what is done.

By the way, the short land 67a is formed between the predetermined signal patterns of the FPC 57. The signal pattern on which the short land 67a is formed is for the laser diode, and is used to prevent the laser diode from being damaged by static electricity by attaching solder to the short land 67a during assembly to create a short circuit state. The solder is removed after assembly.

By overlapping the two FPCs 57 in this way, the entire pattern is widened and the pattern forming space is expanded. Therefore, it is possible to widen the space between the signal patterns 67 and reduce the influence of noise. In addition, it is possible to secure a space for forming a wide signal pattern, for example, a laser diode system that requires a large current. Further, the power supply system and the signal system can be separated by utilizing the openings 68a and 68b, and the noise resistance can be further improved. Further, the formation position of the short land 67a can be formed so as to be arranged in the vicinity of the mechanical component after assembly, and the optical head 4 can be formed.
Therefore, the laser diode of No. 5 can be more surely prevented from being damaged by static electricity.

Next, FIG. 3 shows an overall exploded structural view of a disk device equipped with the drive unit shown in FIG. FIG. 3 shows, as the disc device 41, a device for recording and reproducing information on, for example, a write-once optical disc (disc medium). In FIG. 3, the disk device 41 is roughly composed of a main body case 71, a drive unit 72, a main printed circuit board 73 which is a control board, and a cover 74. The disk medium used is housed in the disk case 75 and mounted in the drive unit 72. Further, the stopper member 76 is used as a separate body.

The main body case 71 is formed in a box shape by, for example, aluminum die casting, and the inside thereof is integrally formed with the drive unit 72, the printed circuit board 73, the above-mentioned mounting member 81 for mounting the stopper member 76, the rod member 82 and the like. It is formed. Further, the front bezel 83 is attached to an open portion which is the front of the main body case 71. The front bezel 83 is provided with an opening / closing insertion opening 84 and an eject button 85 for mounting / dismounting the disk case 75, and an ejection hole 86 is provided in the substantially central portion immediately below the opening / closing insertion opening 84.

The eject button 85 is used to automatically take out the mounted disc case 75 by an eject mechanism using the eject motor 50, and the eject hole 86 is inserted with a shaft or the like for sliding a slider described later. This is for manually taking out the disk case 75 which cannot be taken out automatically when the motor fails or the power supply is stopped.

Further, the front bezel 83 is appropriately provided with an indicator light, a volume, a horn terminal and the like. In addition,
The main body case 71 is provided with a printed circuit board (not shown) on the back surface of the front bezel 83 on which electrical components such as the eject button 85 are mounted. The drive unit 72 is
The drive unit 42 is roughly divided into a drive unit 42 shown in FIG. 1, a slider 91 which is an elevating means, and a disk holder 92 which is a holding means (described in FIG. 4), and is first mounted in the main body case 71. At this time, the drive unit 72
A stopper member 76 is arranged behind the. The stopper member 76 is attached to the disc holder 92 and the disc case 75.
This is to prevent the drive unit 72 from moving rearward when the disc is inserted, and to reduce the stroke of the disc holder 92 when moving up and down.

The main printed circuit board 73 is a portion for performing signal processing for driving and recording / reproducing each mechanism of the drive unit 72. The printed circuit board for the drive unit 72 and the above-described front bezel 83 and corresponding connectors, etc. Thus, the electrical connection is made with a flat cable or the like, and the host side and a predetermined number of connectors 93 are electrically connected. The printed circuit board 73 is arranged above the drive unit 72 of the main body case 71.

Then, the main body case 71 is covered by the cover 74.
By covering the device, it is possible to prevent dust and the like from entering the device. Subsequently, FIG. 4 shows an exploded configuration diagram of the drive unit in FIG. As shown in FIG. 4, the drive unit 72
Is a drive unit 42, a slider 91 as an elevating means,
It is composed of a disc holder 92 which is a holding means.
The drive unit 42 has the configuration shown in FIG.

The slider 91 provided on the drive unit 42 has two cam pieces 101a and 101b on one side.
The cam plate 101 is formed, and the cam piece 101
The a and 101b are formed with a horizontal portion for guiding a guide portion, which will be described later, to move the disc holder up and down, and a taper portion with a downward slope. In addition to the taper portion, the cam piece 101b is formed with a taper portion for pressing a predetermined guide portion described later when the disc holder 92 is at the lower position.

On the other side, the three cam pieces 102a-1.
The cam plate 102 of 02c is formed, and the cam 1
02a and 102b are provided with a horizontal portion for guiding a guide portion of a disc holder 92 described later and a taper portion having a downward inclination, and the cam piece 102c is provided with a disc holder 92 described later.
A downwardly sloping taper portion is formed to hold a predetermined guide portion of the disk holder 92 at a position below the disk holder 92.

Further, the cam plate 10 of the slider 91 is
A rack 103 is formed on one rear side of 1 and meshes with a gear 61 a on a damper 61 of the drive unit 42. Further, the eject hole 86 of the front bezel 83 shown in FIG.
A locking portion 104 for manual ejection formed by cut-and-raising is formed at a position corresponding to, and a cam 51a on the main gear 51 of the drive unit 42 is provided near the rear substantially in the center. A locking portion 105 that engages is formed.

The locking portion 105 is a disk case 75.
The main gear 51 is rotated by the rotation of the eject motor 50 to be engaged with the cam 51a at the time of ejecting, so that the slider 91 is slid backward (backward) and the disc holder 72 is raised. These sliders 91 are integrally formed of a single metal plate member.

Subsequently, the disc holder 92 provided on the slider 91 has a holding portion 111 for holding the disc case 75 at least on both sides formed of a metal plate member, and is used for opening and closing the shutter of the disc case 75. A loading mechanism (not shown) for attaching and detaching the disk case 75 including the lever 112 and the like is provided.

Guide portions 113 corresponding to the cam pieces 101a, 101b, 102a to 102c of the cam plates 101, 102 of the slider 91 are formed on both side surfaces of the disc holder 92. In FIG. Guide portions 113a to 113c corresponding to the cam pieces 101a and 101b of 101 (the same applies to the guide portion on the opposite surface).

Further, a predetermined number of locking portions 114 are provided above the both side surfaces of the disc holder 92 so as to correspond to the locking portions 65 of the drive unit 42. That is, when the drive unit 42, the slider 91, and the disk holder 92 are combined, the respective locking pieces 114 and the locking portions 65 are respectively.
Spring springs 115 are respectively suspended between and to urge the disc holder 92 toward the drive unit 42 side.

A guide hole 116 is formed behind the disc holder 92. The lift guide member 62 of the drive unit 42 is loosely fitted in the guide hole 116 to guide the lift of the disk holder 92. Next, FIG.
FIG. 1 shows a block diagram of the disk case used in the present invention. FIG. 5A is a plan view and FIG. 5B is a bottom view.
The disc case 75 shown in FIGS. 5A and 5B accommodates, for example, a write-once disc medium 121, and has an opening 122 for exposing a partial area in the radial direction of the disc medium 121. , The opening 122 is the shutter 1
It can be opened and closed by 23. This shutter 123
It is slidable in a direction perpendicular to the insertion direction of the disc case 75, and its tip portion 123a is slid by the lever 112 when the disc case 75 is inserted into the disc holder 92 so that the opening 122 is exposed.

Here, the write-once type disk medium 121 is
It is an optical disc that can record information only once, and allows the user to record and reproduce various information such as video information and code information. Video file system, document file system, computer file system, ultra large capacity library It is used in systems and the like. In this disk medium 121, a signal is recorded with a mark of a predetermined shape by the presence or absence (drilling) of a reflection film, deformation (bulge, etc.), and refractive index (reflectance) change in a heat mode by heating laser light, and a laser light spot Is emitted to detect the change in the reflected diffracted light with a strong and weak signal to reproduce.

Therefore, the raising / lowering operation of the disc holder 92 will be briefly described. Now, when the slider 91 is at a predetermined position (the position where the disc holder 92 is at the upper position and the disc case 75 is attached / detached), the guide portions 113a and 113c of the disc holder 92 have the cam plate 10
1, 102 cam pieces 101a, 101b, 102a, 1
When the disc case 75 is inserted into the disc holder 92, the slider is slid forward by the loading mechanism, so that the guide portions 113a and 113c are guided by the tapered portions and the disc holder 92 descends. To do. When the disc holder 92 is at the lower position, the guide portion 113b causes the cam pieces 101b, 1b to
The taper portion 02c is pressed to prevent it from coming off due to vibration or the like.

When the disc holder 92 is raised, the eject button 85 of the front bezel 83 is pushed, or
Alternatively, by pushing the locking portion 114 of the slider with the shaft or the like through the eject hole 86, the slider 91 slides in the depth direction, and each cam piece 101a, 101b, 102.
Guide portions 113a and 113c by the taper portions of a and 102b
Is guided to raise the disc holder 92.

Next, FIG. 6 is a block diagram of another FPC used in the optical head. The FPC 57 _A shown in FIG. 6 is used similarly to the FPC 57 shown in FIG. The FPC 57 _A is brought closer to the FPC 57 _A when it is bent along the bending curve A in the signal pattern 67 formed.
Signal patterns 67b formed in the two regions,
67c (for example, a signal line for the light receiving element of the optical head 45)
Are formed by inclining in the same direction in the plane state shown in FIG.

Therefore, when the FPC 57 _A is bent along the folding curve A, the tilt signal patterns 67b and 67c are in the intersecting state with their tilt directions reversed. As a result, the capacitance between the signal patterns 67b and 67c can be further reduced.

The signal pattern 67e is for supplying a current for driving an actuator for focusing and tracking control of the objective lens 45c of the optical head 45 shown in FIG. The signal pattern 67f is for supplying the current for driving the laser diode of the optical head 45 as described above,
The above-mentioned short land 67a is formed at a predetermined position.

[0056]

As described above, according to the first or second aspect of the present invention, the printed board, which is connected to the head and on which a predetermined number of signal patterns for transmitting and receiving recording / reproducing signals is formed, is appropriately guided. The printed board can be arranged in a small space by forming an opening for penetrating the means and wiring in a bent state in the width direction, and the pattern forming area of the printed board is enlarged to provide a large current. Even if a wide pattern is formed, it is possible to secure a wide space between patterns,
Appropriate wiring can be performed by reducing the capacitance and improving the noise resistance.

According to the third aspect of the present invention, the predetermined signal pattern on the printed board is formed to be inclined, and the signal patterns adjacent to each other at the time of bending are made to intersect with each other, thereby further reducing the electrostatic capacitance. Small, noise resistance can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the optical head of FIG.

3 is an overall exploded configuration diagram of a disk device including the drive unit of FIG.

FIG. 4 is an exploded configuration diagram of the drive unit of FIG.

FIG. 5 is an explanatory diagram of a disc case used in the present invention.

FIG. 6 is a configuration diagram of another FPC used in the optical head.

FIG. 7 is an exploded configuration diagram of a conventional disk device.

FIG. 8 is a schematic bottom view of the drive unit shown in FIG.

[Explanation of symbols]

41 disk device 42 drive unit 43 chassis 45 optical head 49 carrier motor 50 eject motor 53 relay printed circuit board 56, 57, 57 _A , 60 FPC 66a, 66b terminal portion 67 signal pattern 67a short land 67b, 67c tilt signal pattern 68a to 68c Opening 71 Body case 72 Drive unit 73 Main printed circuit board 74 Cover 75 Disk case 76 Stopper member 83 Front bezel 91 Slider 92 Disholder 111 Holding part 113 Guide part 121 Disk medium

Front page continuation (72) Inventor Satoru Sanabe 1601 Sakai, Atsugi, Kanagawa Prefecture Atsugi Plant, Mitsumi Electric Co., Ltd. (72) Inventor Kenichi Hori 1601, Sakai, Atsugi City, Kanagawa Pref., Atsugi Plant, Mitsumi Electric (72) Inventor 1601 Sakai, Atsugi City, Kanagawa Prefecture Mitsumi Electric Co., Ltd. Atsugi Office

Claims (3)

[Claims] 1. A disk device in which a recording / reproducing signal is transmitted / received to / from a head by a printed board when recording / reproducing information to / from a head which can be mounted / removed by the printed board. The disk device, which is formed by forming the signal pattern, is flexible, and is wired in a bent state in the width direction. 2. The head according to claim 1 is movable by being guided by a guide means in the radial direction of the disk medium, and a predetermined number of openings for penetrating the guide means are formed in the printed board. Characteristic disk device. 3. The printed board according to claim 1 or 2, wherein the signal pattern to be formed has a folding curve in the same direction, and the predetermined signal patterns that are brought close to each other by the bending are made to intersect each other. A disk device characterized by being formed with an inclination.