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公开(公告)号：JP2000090639A
公开(公告)日：2000-03-31
申请号：JP25560898
申请日：1998-09-09
Applicant: SONY CORP
Inventor： YAMAMOTO KAZUYUKI , TAKAHASHI KAZUO , MAMIYA TOSHIO , YAMADA TAKASHI , SANADA YOTARO
Abstract: PROBLEM TO BE SOLVED: To obtain a disk device which reduces the outflow of air from the inside of a case body for a disk cartridge and which reduces the entrance dust particles into the case body from the outside. SOLUTION: In a disk device 1, an actuator 8 which is provided with recording/reproducing heads 12, 12 arranged movably. A disklike recording medium 33 is housed inside a case body 32 rotatably. A disk cartridge 31 wherein an opening part 37, for disk placement, into which a disk placement part 30a in which the disklike recording medium 33 is placed on the case body 32 is formed and an insertion hole 36 into which the heads 12, 12 at the actuator 8 are inserted are formed is used. In the disk device 1, an air-outflow regulation means 23b which can be moved in a direction in which the disk cartridge 8 is separated from, and brought close to, the insertion hole 36 is installed. When the disklike recording medium 33 is placed on the disk placement part 30a, the air-outflow regulation means 23b moved in a direction in which it is brought close to the insertion hole 36, the insertion hole 36 is closed, and the outflow of air from the insertion hole 36 is regulated.
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公开(公告)号：JPH11306594A
公开(公告)日：1999-11-05
申请号：JP10664298
申请日：1998-04-16
Applicant: SONY CORP
Inventor： YAMAMOTO KAZUYUKI , TAKAHASHI KAZUO , MAMIYA TOSHIO , YAMADA TAKASHI , SANADA YOTARO
Abstract: PROBLEM TO BE SOLVED: To achieve an excellent recording and/or reproducing characteristic from a state of a disk excellent in the strength, stable in the form, and in a highly smoothed state by using liquid crystal polymer as a material forming a base plate, molding it into almost a disk-like form, and by the fact that a molecular axis direction of an extended molecular chain is almost the same as the radius direction of a base plate. SOLUTION: To mold liquid crystal polymer by injection into almost a disk- like form with a hole formed at the center part, a molecular axis direction of an extended molecular chain is almost the same as the radius direction of a base plate 3. Moreover, a rugged pattern is deposited on the base plate 3, and substrates 4, magnetic layers 5, protective layers 6, and lubricating layers 7 are deposited on both main surfaces 3a, 3b in this order by a thin film deposition method, therefore, the magnetic layers 5 are also deposited in a rugged pattern. This magnetic disk has obtained such properties as a very small post- deposition contraction coefficient, an excellent dimension stability, a high Young' s modulus, and a good rigidity. These prevent the disk from thermal deformation and secure recording and/or reproducing.
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公开(公告)号：JPH11185362A
公开(公告)日：1999-07-09
申请号：JP34810297
申请日：1997-12-17
Applicant: SONY CORP
Inventor： YAMAMOTO KAZUYUKI , TAKAHASHI KAZUO , MAMIYA TOSHIO , YAMADA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide the disk cleaning device in which dust on a disk is easily removed and sticking of dust to a slider is prevented. SOLUTION: A slider 120A supported by a head actuator 20A is moved close to the surface of the disk rotated by a spindle motor 30A, a seek operation is conducted for the slider 120A so that the dust stuck on a disk is stuck on the slider 120A. During the above operation, the slider 120A is floated up to the portion, which is closer to the surface of the disk than a normal recording and reproducing position, and a seek operation is conducted. The dust stuck on the slider 120A is re-stuck on the inner peripheral section, which is the non-recording region of the disk that is cleaned, and is removed from the slider 120A. The dust stuck on the slider 120A is eliminated by sticking on a dedicated dust cleaning disk. Note that the number of revolutions of the disk is reduced so as to stick the dust stuck on the slider 120A to the disk.
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公开(公告)号：JPH11167761A
公开(公告)日：1999-06-22
申请号：JP33434197
申请日：1997-12-04
Applicant: SONY CORP
Inventor： YAMADA TAKASHI , YAMAMOTO KAZUYUKI , TAKAHASHI KAZUO , MAMIYA TOSHIO , OSHIMA EIJI
Abstract: PROBLEM TO BE SOLVED: To provide a disk storage device, wherein the device is made thin after a disk cartridge is loaded and handleability is improved by simplifying the loading process of the disk cartridge. SOLUTION: A cartridge holder 23 is moved in a roughly horizontal state in a vertical direction orthogonal to the horizontal direction only when a disk cartridge 1 is loaded in a cartridge loading part or the disk cartridge 1 is ejected from the cartridge loading part, and the thickness of a device including the cartridge holder 23 at the time of loading the same is set larger than that of the device other than the loading or ejecting time.
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公开(公告)号：JPH10289545A
公开(公告)日：1998-10-27
申请号：JP9621397
申请日：1997-04-14
Applicant: SONY CORP
Inventor： OSHIMA EIJI , MAMIYA TOSHIO , YAMADA TAKASHI , TAKAHASHI KAZUO , YAMAMOTO KAZUYUKI
IPC: G11B21/02
Abstract: PROBLEM TO BE SOLVED: To provide a head actuator with improved tracking ability of a head. SOLUTION: This actuator consists of a turning arm 6 which turns centering a pivot 5, a floating slider 12 having a magnetic head provided via a suspension 2 on tip part, a 1st driving part 4 for turning the turning arm provided on the side of the pivot of the turning arm, and a 2nd driving part 13 provided on the curved actuator side. The 2nd actuator part 13 is fitted in the neighborhood of the tip part of the turning arm. The 1st and 2nd driving parts 4, 13 are configured as voice coil motors. The 2nd driving part permits a precise tracking servo.
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Patent Agency Ranking
公开(公告)号：JPH10288223A
公开(公告)日：1998-10-27
申请号：JP9621097
申请日：1997-04-14
Applicant: SONY CORP
Inventor： YAMAMOTO KAZUYUKI , MAMIYA TOSHIO , YAMADA TAKASHI , TAKAHASHI KAZUO , OSHIMA EIJI , KAWAZOE KAZUSHIGE , YOTSUYA MICHIO , OUCHI HIRONOBU
Abstract: PROBLEM TO BE SOLVED: To prevent the occurrence of operational failure due to the leakage of a lubricating fluid. SOLUTION: In a spindle motor 3 of a disc device, perfluoropolyether is sealed between a rotary shaft 106 and a bearing surface 113 as a lubricating fluid. The perfluoropolyether is the same type as the fluid applied to the disc of the hard disc device as a liquid lubricant. When the rotary shaft 106 is rotated, dynamic pressure of the lubricating fluid is generated by herringbone grooves 111 to support radial load. Even when the lubricating fluid leaks, operational failure of the disc device does not occur, since the fluid is the same type as the liquid lubricant for the disc.
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公开(公告)号：JPH10241277A
公开(公告)日：1998-09-11
申请号：JP4123497
申请日：1997-02-25
Applicant: SONY CORP
Inventor： TAKAHASHI KAZUO , MAMIYA TOSHIO , YAMADA TAKASHI , YAMAMOTO KAZUYUKI , OSHIMA EIJI , KAWAZOE KAZUSHIGE , YOTSUYA MICHIO , OUCHI HIRONOBU
IPC: G11B19/20
Abstract: PROBLEM TO BE SOLVED: To grasp a magnetic fluid in utilizing a leakage magnetic flux of a disk chucking magnet and to confine the magnetic fluid in its position. SOLUTION: A shaft 16 is inserted into a cylindrical body 30, and a viscous fluid 32 is sealed between this shaft and the cylindrical body to form a fluid bearing part 40. A fluid sealing 50 is provided on an upper end side of the fluid bearing part. This means is composed of recessed annular parts 54 and 55 and a magnetic fluid 61 sealed in a gap between them. Magnetic flux passing through a cylinder body 21 by the recessed annular parts becomes easily leakable in these parts, and the leakage magnetic flux is grasped to be confined in the recessed annular parts. A passage for passing the recessed annular parts is interrupted by the confinement of the fluid in virtue of this magnetic flux, so that the fluid 32 and the magnetic fluid itself are never leaked to the outside. Since a magnet to be exclusively used for attracting the magnetic fluid is not required, the structure can be miniaturized and thin structive by a space for this magnet.
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公开(公告)号：JPH10149647A
公开(公告)日：1998-06-02
申请号：JP30634996
申请日：1996-11-18
Applicant: SONY CORP
Inventor： MAMIYA TOSHIO , YAMAMOTO KAZUYUKI , YAMADA TAKASHI , TAKAHASHI KAZUO , OSHIMA EIJI
IPC: G11B23/00
Abstract: PROBLEM TO BE SOLVED: To eliminate various inconveniences caused by adhesives for attaching a center core in a cartridge disk having the center core attached to a disk substrate. SOLUTION: A center core includes first and second cores 13a and 13b, a disk substrate 11 is elastically held from upper and lower sides between these cores and thus the center core is easily attached without using any adhesives different from the conventional case. Various inconveniences caused by timedepending changes in the adhesives are eliminated, and in particular since the disk substrate 11 and the center core are freely extended without being bound against a temperature change, the disk substrate 11 is prevented from being deformed for a long time.
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公开(公告)号：JPH10125032A
公开(公告)日：1998-05-15
申请号：JP33481296
申请日：1996-11-29
Applicant: SONY CORP
Inventor： YAMADA TAKASHI , YAMAMOTO KAZUYUKI , MAMIYA TOSHIO , TAKAHASHI KAZUO , OSHIMA EIJI
IPC: G11B23/03
Abstract: PROBLEM TO BE SOLVED: To prevent the strength of a device body from deteriorating and at the same time make thin and compact a device by placing a shutter that is operated with a cartridge body as a trigger at the time of inserting a disk cartridge into a cartridge holder for holding the disk cartridge. SOLUTION: A cartridge holder 16 is fitted into a mechanical chassis 17, and left and right support brackets 19 for supporting the rear edge part of the cartridge holder 16 rotatably are screwed to a specific position, thus supporting the cartridge holder 16 so that it can be inclined up and down for the mechanical chassis 17 and the cartridge holding part of the cartridge holder 16 is made correspond to the upper part of a spindle motor 12 that is fixed to the mechanical chassis 17. A drive mechanism for performing reading/writing using a disk-shaped storage that is accommodated rotatably can be made thin and a device can be made light, while preventing the strength of the device body from deteriorating.
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公开(公告)号：JPH10125014A
公开(公告)日：1998-05-15
申请号：JP33481096
申请日：1996-11-29
Applicant: SONY CORP
Inventor： YAMAMOTO KAZUYUKI , MAMIYA TOSHIO , YAMADA TAKASHI , TAKAHASHI KAZUO , OSHIMA EIJI
IPC: G11B21/02
Abstract: PROBLEM TO BE SOLVED: To move a read/write head surely and stably for an information receding medium by bending and forming a rotation arm in nearly L shape, and providing a rotation center near a rotation drive part. SOLUTION: A rotation support member for supporting a read/write head is mounted to a rotation arm 55 and the tip of the rotation arm and has a pair of upper and lower sliders 52a and 52b for supporting the read/write head. Also, the rotation arm 55 is bend and formed in nearly L-shaped, dog leg shape, sliders 52a and 52b of an elastic support are fixed to the tip part of the flex before being inserted into a disk cartridge nearly linearly from the tip, thus performing support by a lamp 91. The sliders 52a and 52b move stably to enable an accurate correspondence of the read/write head.
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