WO1999016055A1 - Systeme de disque - Google Patents

Systeme de disque Download PDF

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Publication number
WO1999016055A1
WO1999016055A1 PCT/JP1998/004182 JP9804182W WO9916055A1 WO 1999016055 A1 WO1999016055 A1 WO 1999016055A1 JP 9804182 W JP9804182 W JP 9804182W WO 9916055 A1 WO9916055 A1 WO 9916055A1
Authority
WO
WIPO (PCT)
Prior art keywords
disk
head
sliding contact
disk device
arm
Prior art date
Application number
PCT/JP1998/004182
Other languages
English (en)
Japanese (ja)
Inventor
Junichi Mizukami
Takao Tanishima
Original Assignee
Teac Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teac Corporation filed Critical Teac Corporation
Priority to JP51880599A priority Critical patent/JP3752551B2/ja
Publication of WO1999016055A1 publication Critical patent/WO1999016055A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/12—Raising and lowering; Back-spacing or forward-spacing along track; Returning to starting position otherwise than during transducing operation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
    • G11B21/20—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier
    • G11B21/21—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider

Definitions

  • the present invention relates to a disk device, and more particularly to a disk device that reads and writes information by bringing a head portion into sliding contact with the surface of a disk-shaped recording medium.
  • a disk cartridge (hereinafter, referred to as a “cartridge”) containing a disk-shaped recording medium (hereinafter, referred to as a “disk”) is mounted on the disk device.
  • the head arm supporting the magnetic head at the tip rotates, and the magnetic head comes into contact with the upper surface of the disk.
  • the optical pickup is moved to a position facing the lower surface of the disk.
  • the magnetic head and the optical pickup are moved in the radial direction of the disc so that they face each other with the disc interposed at the same track position of the disc.
  • a laser beam is irradiated from an optical pickup to raise the temperature of the recording area to a temperature of one or more points.
  • a magnetic field is applied to the recording area of the disk by the magnetic head to magnetize the recording area.
  • the magnetization direction of the applied magnetic field is stored in the recording area.
  • the disc is irradiated with laser light from an optical pickup.
  • the vibration direction of the polarization plane of the reflected light is detected, and it is determined whether or not the vibration direction is rotated once by the magnetic Kerr effect according to the magnetization direction of the recording area.
  • the optical pickup does not contact the disk, but the magnetic head contacts the disk surface.
  • a transparent resin layer is coated on the upper and lower surfaces of the magneto-optical recording film of the disk.
  • the disk surface is not damaged in a normal use.
  • the foreign material may scratch the disk surface and damage the disk surface.
  • the surface of the recording area of the disk may be deeply scratched.
  • an object of the present invention is to provide a new and useful disk device that solves the above-mentioned problems.
  • a more specific object of the present invention is to provide a disk device in which foreign matter is not caught between the head and the recording medium by moving the head over the recording medium while maintaining a predetermined distance from the recording medium.
  • a disk drive having a head for reading and / or writing information from / to a recording area of a rotating disk-shaped recording medium
  • a head support guide that is supported by the sliding portion and holds the head movably in a predetermined direction with respect to the disk-shaped recording medium with the head separated from the surface of the disk-shaped recording medium by a predetermined distance.
  • the head is movably supported by the head support and guide mechanism supported by the sliding contact portion that comes into contact with the recording medium. Therefore, the sliding portion and the head that come into contact with the recording medium are separated from each other, and the sliding portion can be brought into contact with a portion other than the recording area of the recording medium. Further, since the position of the head and the recording medium can be determined based on the contact of the sliding portion with the recording medium, the distance between the head and the recording medium can be always kept constant. Therefore, the distance between the head and the recording medium can be kept very small. As a result, even when a magnetic head is used, it is possible to maintain a small distance between the head and the recording medium while maintaining an appropriate magnetic recording / reproducing function. Therefore, it is possible to prevent foreign matter from being caught between the head and the recording medium.
  • a disc-shaped recording medium has a non-recording area in which no information is recorded. Therefore, by making the sliding contact portion slide into contact with the non-recording area, the recording area is not damaged even if foreign matter enters between the sliding contact portion and the recording medium.
  • the non-recording area exists on the outer peripheral portion of the disk of the recording medium, and the sliding contact portion comes into contact with the outer peripheral portion, it is possible to prevent the disk from swinging during rotation.
  • FIG. 1 is an exploded perspective view of an embodiment of the disk drive of the present invention.
  • FIG. 2 is an enlarged plan view of the magnetic head mechanism shown in FIG.
  • FIG. 3 is a side view of the magnetic head mechanism in a state where the sliding portion is in sliding contact with the non-recording area of the disk.
  • FIG. 4 is a front view of the magnetic head mechanism in a state where the sliding portion is in sliding contact with the non-recording area of the disk.
  • FIG. 5 is an exploded perspective view of the disk device.
  • FIG. 6 is a side view showing the inside of the disk device when the cartridge is not mounted.
  • FIG. 7 is a side view showing the inside of the disk device in a playback mode state after the attachment of the cartridge.
  • FIG. 8 is a side view showing the inside of the disk device in the recording mode after the attachment of the cartridge.
  • FIG. 9 is a perspective view of a first modification of the magnetic head support mechanism according to the present invention.
  • FIG. 10 is a plan view of a magnetic head mechanism having a first modification of the magnetic head support mechanism.
  • FIG. 11 is a side view of a magnetic head mechanism having a first modification of the magnetic head support mechanism.
  • FIG. 12 is a front view of a magnetic head mechanism having a first modification of the magnetic head support mechanism.
  • FIG. 13 is a plan view of a magnetic head mechanism having a second modification of the magnetic head support mechanism.
  • FIG. 14 is a side view of a magnetic head mechanism having a second modification of the magnetic head support mechanism.
  • FIG. 15 is a front view of a magnetic head mechanism having a second modification of the magnetic head support mechanism.
  • FIG. 1 is an exploded perspective view of a magneto-optical disk drive according to one embodiment of the present invention.
  • the magneto-optical disk device 11 has a turntable 13 on which a magneto-optical disk (not shown) is mounted on a base 12.
  • the evening table 13 has a magneto-optical disk hub.
  • a magnet for magnet fishing 14 is buried.
  • the base 12 has a pickup opening 15 on the side of the turntable 13. Behind the pickup opening 15 (in the direction indicated by the arrow B), a pair of head arm support portions 16 is provided upright.
  • the base 12 between the pair of head arm supports 16 is provided with a head arm passage opening 17.
  • each of the head arm support portions 16 is provided with a shaft hole 16a through which the shaft 29 is inserted.
  • a magnetic head mechanism 18 is disposed on the upper surface side of the base 12 between the head arm support portions 16.
  • the magnetic head mechanism 18 has a first head arm 19 that rotates vertically and a second head arm 20 that moves in the disk radial direction.
  • the first head arm 19 is rotatably supported by a pair of head room supports 16.
  • the first head arm 19 includes a pair of arms 21 and 22 extending in the directions indicated by arrows A and B, and a beam 23 and a beam extending between the arms 21 and 22. 24, and arms 25, 26 projecting downward from the rear ends of the arms 21, 22.
  • the arm portions 25, 26 of the first head arm 19 have bearings 25a, 26a on the upper portion thereof, and the shaft 25 mounted between the head arm support portion 16 is provided. Is inserted.
  • the lower portions of the arms 25 and 26 are inserted into the head arm opening openings 17 and protrude from the lower surface of the base 12.
  • engagement holes 25b and 26b are provided below the arms 25 and 26, respectively.
  • the ends of the arms 21 and 22 are provided with sliding portions 27 and 28 which are in sliding contact with the surface of the disk.
  • the sliding portions 27 and 28 are formed of a low-friction material so that they can slide on the surface of the disk with low friction.
  • the lower surfaces of the sliding portions 27 and 28 have arcuate curved surfaces.
  • the sliding portions 27 and 28 are provided with shaft holes 27 a and 28 a for supporting the magnetic head guide rod 30.
  • the guide rod 30 moves between the tips of the arms 21 and 22 (indicated by arrows C and D). Direction).
  • the second head arm 20 that supports the magnetic head 31 has a sliding portion 32 that is slidably fitted to the guide rod 30.
  • the height of the magnetic head 31 with respect to the disk surface is regulated by the guide rod 30 so as not to contact the disk. That is, the magnetic head 31 is guided by the guide rod 31 so that it can move while maintaining the same height with respect to the disk surface.
  • the distance L between the sliding portions 27 and 28 of the first head arm 19 is larger than the width of the recording area of the disc.
  • the first head arm 19 is mounted such that a pair of sliding portions 27 and 28 slide against a non-recording area of the disk. That is, one sliding contact portion 27 slides on the inner non-recording area and the other sliding contact portion 28 slides on the outer non-recording area.
  • a slider 35 for a head arm for driving the first head arm 19 is slidably provided in the directions indicated by arrows A and B. I have.
  • the head arm slider 35 is provided with shafts 36, 37 fitted to the engagement holes 25 b, 26 b provided in the arms 25, 26 of the first head arm 19. Have. Therefore, the first head arm 19 rotates up and down around the shafts 36 and 37.
  • an engaging pin 41 that stands through an elongated hole 38 of the base 12 and engages with the cam groove 40 of the cam gear 39 for mounting the cartridge stands upright. are doing. Therefore, when the cartridge mounting cam gear 39 is rotated, the engaging pin 41 moves along the cam groove 40, and the head arm slider 35 slides. As a result, the first head arm 19 can be rotated.
  • An optical pickup mechanism 42 is provided on the lower surface side of the base 12.
  • the optical pickup mechanism 42 includes an optical head 44 supporting the optical head 43, a rack 45 extending laterally from the optical head 44, and a rack. And a driving gear 46 for driving the optical head 44 in the directions indicated by arrows C and D.
  • a leaf spring 20a is fixed to the rear end of the second head room 20 supporting the magnetic head 31.
  • the leaf spring 20a is screwed to the upper end of a vertical support 44a from the rear of the optical head arm 44. Therefore, the second head 20 is moved in the direction indicated by arrows C and D integrally with the optical head arm 44 with the magnetic head 31 facing the optical head 43. Can be moved to.
  • the end of the first head 19 is displaced downward (in the direction indicated by the arrow E), and the sliding portions 27 and 28 hit the non-recording area of the disk 53. Touch In this state, the leaf spring 20a bends, so that the magnetic head 31 approaches the disk upper surface.
  • a driving mechanism 47 for driving the force cartridge for driving the cam gear 39 for mounting the force cartridge is attached.
  • the rotation shaft 48 of the cartridge mounting drive motor 47 passes through the hole 49 of the base 12 and protrudes toward the upper surface of the base 12.
  • a pulley 50 for transmitting rotation is fitted to the upper end of the rotating shaft 48.
  • FIG. 2 is an enlarged plan view of the magnetic head mechanism 18 according to the present invention.
  • FIG. 3 is a side view of the magnetic head mechanism 18 in a state where the sliding portions 27 and 28 are in sliding contact with the non-recording area of the disk.
  • FIG. 4 is a front view of the magnetic head mechanism 18 in a state where the sliding portions 27 and 28 are in sliding contact with the non-recording area of the disk.
  • the disk cartridge 51 is inserted into the force-holder 56 and moved to the mounting position in the disk device.
  • the first head arm 19 and the second head arm 20 rotate downward (in the direction indicated by the arrow E).
  • the sliding portions 27 and 28 of the first head arm 19 are in sliding contact with the upper surface of the disk 53 stored in the disk cartridge 51.
  • the arms 20 and 21 of the first head arm 19 have flexibility, and the first head arm 19 is moved in the direction indicated by the arrow E.
  • it rotates it bends and presses the sliding portions 27 and 28 against the upper surface of the disk 53.
  • the disk 53 is chucked by the magnet 14 on the turntable 13 and is rotating together with the evening table 13.
  • the sliding portions 27 and 28 of the first head arm 19 slide into contact with the non-recording areas 53 a and 53 b formed on the inner and outer peripheral sides of the disc 53, respectively, and guide rods 30. Height position is specified.
  • a sliding portion 32 provided on the distal end side of the second head arm 20 is suspended between the distal ends of a pair of arms 21 and 22 of the first head arm 19.
  • Guide rod 30 is slidably fitted.
  • the sliding direction of the second head room 20 is guided by the shaft 29 and the guide rod 30.
  • the magnetic head 31 faces the recording area 53 c of the disk 53 at a position separated by the minute gap S. Therefore, the magnetic head 31 can move in the disk radial direction without contacting the disk 53. As a result, even if a foreign substance adheres to the disk 53 or the magnetic head 31, the foreign substance is prevented from being caught between the recording area of the disk and the magnetic head 31. Therefore, it is possible to prevent the recording area on the surface of the disk 53 from being damaged. Further, it is possible to prevent the recording medium film of the disk 53 from being damaged by deep scratches.
  • FIG. 5 is an exploded perspective view of the disk device 11.
  • the disk drive 11 has a gate-shaped frame 54 fixed on a base 12, and A and B directions inside the frame 54. It has a gate-type cartridge mounting slider 55 slidably supported in the opposite direction, and a cartridge holder 56 movably provided inside the force cartridge mounting slider 55.
  • the frame 54 has a top plate 54a and left and right side plates 54b.
  • the side plate portion 54b of the frame 54 has an L-shaped elongated hole 54c.
  • a cam assembly 57 is attached to the side plate portion 54b of the frame 54.
  • a push lever 58 is attached to the top plate 54 a of the frame 54.
  • the cartridge mounting slider 55 has a top plate portion 55a, left and right side plate portions 55b, and an overhang portion 55c that extends in the B direction.
  • the side plate portion 55b has an inclined groove 55d.
  • An L-shaped arm 60 and a leaf spring member 61 are attached to the lower surface of the top plate portion 55a.
  • a plate member 62 is provided on the overhanging portion 55c.
  • the cartridge holder 56 has a bottom plate portion 56a, left and right rising side plate portions 56b, and a force cartridge support portion 56c protruding inward from the side plate portion 56b. Further, a pin 70 protrudes laterally from the cartridge holder 56 on the side plate portion 56b. The pin 70 passes through the inclined groove 55d and the long hole 54c at a point where they intersect. Further, leaf spring members 71 and 72 are attached along the left and right side plate portions 56b.
  • the leaf spring members 71 and 72 have substantially V-shaped leaf spring portions 71a and 72a at the ends in the direction indicated by arrow B.
  • the leaf spring portions 71a and 72a are respectively located on the projecting portions 56 on the side of the direction indicated by the arrow B, and face the bottom plate portion 56a.
  • the leaf spring portions 71 a and 72 a serve to press the disk cartridge 51 inserted into the force cartridge holder 56.
  • the disk cartridge 51 has a shirt 51a for closing an opening provided at a position where the magnetic head 31 and the optical head 43 face each other.
  • the base 12 has a magnetic head mechanism 18 as described above, a module 80 for driving a table 13 driving the module 13, an optical pick-up mechanism 42, and a cartridge mounted.
  • Cam gear 39, cartridge mounting motor 47, printed board 84, head arm slider 35, pulley 82, gear 83, etc. are attached.
  • the rotational driving force of the cartridge mounting motor 47 is transmitted to the pulley 50, the belt (not shown), the pulley 82, the gear 83, the cartridge mounting force, and the gear 39, in that order.
  • the slider 35 is driven in the directions indicated by arrows A and B.
  • FIG. 6 is a side view showing the inside of the disk device when no cartridge is mounted
  • FIG. 7 is a side view showing the inside of the disk device in the playback mode after the cartridge is mounted
  • FIG. 8 is a cartridge mounted.
  • FIG. 6 is a side view showing the inside of the disk device in a recording mode state after the wearing.
  • the cartridge holder 56 has been raised to the insertion / ejection position.
  • the cartridge mounting slider 55 is at a sliding position in the direction indicated by arrow A.
  • the slider 35 for the head arm is located near the direction indicated by the arrow A.
  • the magnetic head mechanism 18 is held in a state where the first head arm 19 and the second head arm 20 are displaced upward. At this time, the magnetic head 31 and the sliding portions 27 and 28 are also displaced above the force cartridge holder 56.
  • the shirt 51a of the disc cartridge 51 opens. And
  • the cartridge insertion detection switch (not shown) is turned on. At this time, the leaf spring portions 71a and 72a of the leaf spring members 71 and 72 press and hold the disk cartridge 51.
  • the cartridge mounting cam gear 39 has an engaging pin 39a that is inserted through the groove 55e of the projecting portion 55c of the cartridge mounting slider 55 and the groove 62a of the plate member 62. Therefore, the cartridge mounting slider 55 slides in the direction indicated by arrow B.
  • the cartridge mounting slider 55 has a pin 70 of the force cartridge holder 56 engaged with an inclined groove 55 d provided in the side plate portion 55 b. Therefore, the force holder 56 moves downward (in the direction indicated by the arrow E) as the slider 55 slides in the B direction. As a result, the force holder 56 holding the disk cartridge 51 is lowered to the mounting position shown in FIG.
  • the force cartridge mounting slider 55 moves in the direction indicated by arrow B.
  • the engaging portion 58d of the push lever 58 is pressed by the pressing piece 61a of the panel member 61.
  • the push lever 58 rotates counterclockwise in conjunction with the movement of the cartridge holder 56 in the direction indicated by the arrow E, and the front side of the disk cartridge 51 inserted into the cartridge holder 56. Continue pressing down on the top.
  • the optical head 43 becomes readable so as to face the lower surface of the disk 53 stored in the disk cartridge 51.
  • the magnetic head 31 is separated above the disk 53. Therefore, the cartridge holder 56 cannot be moved to the mounting position. Thus, a state in which a reproduction operation is possible is established.
  • the optical head 43 and the optical head arm 44 are guided so as to be slidable along guide shafts 85, 86 extending in directions indicated by arrows C, D.
  • the optical head 43 and the optical head arm 44 are moved in the directions indicated by arrows C and D (disc radius) by rotating the gear 46 coupled to the rack 45 of the optical head arm 44.
  • Direction and read the information recorded on the disk 53.
  • the output shaft 48 of the cartridge mounting module 47 is rotated at a predetermined angle by the recording mode setting operation.
  • the slider 35 for the head arm has the engaging pin 41 that engages with the cam groove 40 of the cam gear 39 for mounting the cartridge.
  • the head arm slider 35 has shafts 36, 37 fitted into engagement holes 25b, 26b provided in the arms 25, 26 of the first head arm 19, respectively. Have. Therefore, the head arm slider 35 moves in the direction indicated by the arrow B, and the first head arm 19 rotates counterclockwise.
  • the sliding portions 27 and 28 abut on the upper surface of the disk 53.
  • the second head arm 20 has a sliding portion 32 that slidably fits on a guide rod 30 that is laid across the ends of the arms 21 and 22 of the first head arm 19. For this reason, the leaf spring 20a supporting the second head arm 20 is deflected in conjunction with the rotation operation of the first head arm 19, and the second head arm 20 is also turned counterclockwise. Move. Therefore, the magnetic head 31 provided at the tip of the second head arm 20 is close to the upper surface of the disk 53 and faces the recording area 53c.
  • the sliding portions 27 and 28 of the first head arm 19 are in sliding contact with the non-recording areas 53 a and 53 b of the disk 53 to define the height position of the guide rod 30.
  • the sliding portion 32 of the second head arm 20 is slidably fitted to the guide rod 30.
  • the second head 20 guides the magnetic head 31 to move while maintaining the magnetic head 31 at a height position separated from the upper surface of the disk 53 by a small gap S. . Therefore, the magnetic head 31 can move in the disk radial direction without contacting the upper surface of the disk 53. Therefore, even if foreign matter adheres to the disk 53 or the magnetic head 31, the foreign matter does not get caught between the disk 53 and the magnetic head 31, and adheres to the surface of the disk 53. Damage can be prevented.
  • the ejecting operation is achieved by performing the above cartridge mounting operation in reverse. That is, when the eject operation is performed, the cartridge mounting module 47 is rotated in the reverse direction, and the head slider 35 is slid in the direction indicated by the arrow A. As a result, the first head arm 19 and the second head arm 20 rotate in a direction away from the disk 35. Thereafter, the force cartridge mounting slider 55 moves in the direction indicated by the arrow A, and moves the force cartridge holder 56 up to the insertion / ejection position.
  • FIG. 9 is a perspective view of a first modification of the magnetic head support mechanism according to the present invention.
  • a pair of guide plates 91 and 92 are arranged in parallel at the ends of the arms 21 and 22 of the first head arm 19.
  • the guide plates 91 and 92 have an L-shaped cross section.
  • the guide plates 91 and 92 are fixed to the corners of the sliding portions 93 and 94 provided at the tips of the arms 21 and 22.
  • the sliding portions 93 and 94 have projecting portions 93a and 94a on the lower surface.
  • the protruding portions 93 a and 94 a protrude downward through a slit 95 formed between the guide plates 91 and 92.
  • the magnetic head 96 provided at the end of the second head arm 20 is Sliding surfaces 96a and 96b that abut against the guide plates 91 and 92; and a head portion located below the sliding surfaces 96a and 96b and close to the disk 53. 9 6c.
  • the projecting distance of the head portion 96c from the sliding contact surfaces 96a and 96b is larger than the thickness of the guide plates 91 and 92.
  • the protrusions 93a, 94a of the sliding portions 93, 94 project from the sliding surfaces 96a, 96b so that the projections 93a, 94a project more than the head 96c.
  • the protruding distance of the head part 96c is determined.
  • FIG. 10 is a plan view of a magnetic head mechanism 18 having a first modification of the magnetic head support mechanism
  • FIG. 11 is a magnetic head having a first modification of the magnetic head support mechanism
  • FIG. 12 is a front view of a magnetic head mechanism 18 having a first modification of the magnetic head support mechanism.
  • FIGS. 10, 11 and 12 the same portions as those shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.
  • the projecting portions 93 a and 94 a of the sliding portions 93 and 94 come into sliding contact with the surfaces of the non-recording areas 53 a and 53 b of the disk 53.
  • the head part 96 c is held at a position separated from the surface of the disk 53.
  • the head portion 96 c of the magnetic head 96 is held at a position separated from the recording area 53 c of the disk 53 by the minute gap S. Therefore, the magnetic head 96 can move in the disk radial direction without contacting the disk 53. As a result, even if foreign matter adheres to the head 53 c of the disk 53 or the magnetic head 96, the foreign matter does not get caught between the disk 53 and the magnetic head 96. The surface of the disk 53 can be prevented from being damaged.
  • FIG. 13 is a plan view of a magnetic head mechanism 18 having a second modification of the magnetic head support mechanism
  • FIG. 14 is a side view of a second modification of the magnetic head support mechanism
  • FIG. 5 is a front view of a second modification of the magnetic head support mechanism.
  • the same parts as those shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.
  • the support portion 97 has a contact portion 97 b that comes into contact with the top plate 56 a of the cartridge holder 56, and projects downward from the contact portion 97 b. And a guide plate support portion 97a for supporting the guide plates 91, 92.
  • the sliding contact portions 94 located on the outer peripheral side are disc-shaped.
  • the contact portion 97b of the support portion 97 contacts the upper surface side of the top plate 56a of the cartridge holder 56.
  • the head portion 96 c of the magnetic head 96 is held at a position separated from the recording area 53 c of the disk 53 by the minute gap S.
  • the foreign matter can be trapped between the disk 53 and the magnetic head 96. Therefore, it is possible to prevent the surface of the disk 53 from being damaged.
  • the position of the contact portion 97 is regulated by the contact of the contact portion 97 b with the holder 56, so that only the sliding portion 94 comes into sliding contact with the disk 53. Therefore, the rotational load of the disk due to the sliding contact portion can be reduced.
  • the shape of the sliding portions 27, 28, 93, 94 is not limited to that of the above embodiment, and may be a flat shape, or a rotating body such as a roller may be used as the first head arm 1. It may be configured to be provided at the tip of 9.
  • the present invention is applied to a magneto-optical disk device.
  • the present invention is not limited to this, and a disk device for recording or reproducing information by sliding a head portion on a disk. If so, it can be applied.
  • a pair of sliding portions provided at the leading end of the first head 19 in the non-recording area of the disk are brought into sliding contact with the disk surface.
  • the present invention is not limited to such a configuration.
  • a configuration may be adopted in which a sliding contact portion made of a rotating body such as a roller is slidably contacted with a recording area at a substantially intermediate position between the non-recording areas on the inner peripheral side and the outer peripheral side.

Abstract

L'invention porte sur un système de disque (11) comportant des têtes de lecture écriture de données sur la zone (53c) d'enregistrement d'un disque tournant (53) et des éléments (27, 28, 93, 94) à contact glissant reposant sur les zones (53a, 53b) du disque (53) ne servant pas à l'enregistrement. Un mécanisme de guidage portant les têtes repose sur les éléments à contact glissant. Ledit mécanisme maintient les têtes (31, 96) à une distance donnée de la surface du disque les têtes (31, 96) qui peuvent se déplacer dans une direction donnée par rapport au disque (53). Les têtes de déplacent au-dessus du disque (53) à la distance donnée de sa surface empêchant ainsi les matières étrangères d'êtres prises entre les têtes et le disque.
PCT/JP1998/004182 1997-09-22 1998-09-17 Systeme de disque WO1999016055A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51880599A JP3752551B2 (ja) 1997-09-22 1998-09-17 ディスク装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9/257091 1997-09-22
JP25709197 1997-09-22

Publications (1)

Publication Number Publication Date
WO1999016055A1 true WO1999016055A1 (fr) 1999-04-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/004182 WO1999016055A1 (fr) 1997-09-22 1998-09-17 Systeme de disque

Country Status (2)

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JP (1) JP3752551B2 (fr)
WO (1) WO1999016055A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007066736A1 (fr) * 2005-12-09 2007-06-14 Pioneer Corporation Dispositif à disque

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01292651A (ja) * 1988-05-19 1989-11-24 Olympus Optical Co Ltd 光磁気記録装置のバイアス磁界移動装置
JPH04358341A (ja) * 1991-06-05 1992-12-11 Sony Corp 光磁気記録装置
JPH06349135A (ja) * 1993-06-11 1994-12-22 Nippon Chemicon Corp 磁界ヘッドの昇降機構

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01292651A (ja) * 1988-05-19 1989-11-24 Olympus Optical Co Ltd 光磁気記録装置のバイアス磁界移動装置
JPH04358341A (ja) * 1991-06-05 1992-12-11 Sony Corp 光磁気記録装置
JPH06349135A (ja) * 1993-06-11 1994-12-22 Nippon Chemicon Corp 磁界ヘッドの昇降機構

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007066736A1 (fr) * 2005-12-09 2007-06-14 Pioneer Corporation Dispositif à disque

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