CA2025497A1 - Magnetic disk storage apparatus - Google Patents

Magnetic disk storage apparatus

Info

Publication number
CA2025497A1
CA2025497A1 CA2025497A CA2025497A CA2025497A1 CA 2025497 A1 CA2025497 A1 CA 2025497A1 CA 2025497 A CA2025497 A CA 2025497A CA 2025497 A CA2025497 A CA 2025497A CA 2025497 A1 CA2025497 A1 CA 2025497A1
Authority
CA
Canada
Prior art keywords
vibration
enclosure
magnetic disk
disk storage
storage apparatus
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2025497A
Other languages
French (fr)
Other versions
CA2025497C (en
Inventor
Masaharu Sugimoto
Keiji Aruga
Tomoyoshi Yamada
Takahiro Imamura
Yoshifumi Mizoshita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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
Priority claimed from JP1240198A external-priority patent/JP2777917B2/en
Priority claimed from JP27045089A external-priority patent/JP2754413B2/en
Priority claimed from JP2037196A external-priority patent/JP2777922B2/en
Priority claimed from JP5642290A external-priority patent/JP2725071B2/en
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CA2025497A1 publication Critical patent/CA2025497A1/en
Application granted granted Critical
Publication of CA2025497C publication Critical patent/CA2025497C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5582—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for working during or after external perturbation, e.g. in the presence of a mechanical oscillation caused by a shock
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/08—Insulation or absorption of undesired vibrations or sounds

Abstract

A magnetic disk storage apparatus comprising a rotary actuator which prevents head positioning error resulting from vibration and impact is described. Since head positioning error is generated when the enclosure makes a rotating movement due to translational vibration input due to vibration, a vibration proof mechanism consisting of a several vibration proof supporting members is provided between the enclosure and frame. The vibration proof supporting members are disposed so that the linear moment around the center of gravity of the enclosure is balanced against translational external force applied to the enclosure.
CA002025497A 1989-09-18 1990-09-17 Magnetic disk storage apparatus Expired - Fee Related CA2025497C (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP1-240198 1989-09-18
JP1240198A JP2777917B2 (en) 1989-09-18 1989-09-18 Magnetic disk drive
JP27045089A JP2754413B2 (en) 1989-10-19 1989-10-19 Magnetic disk drive
JP1-270450 1989-10-19
JP2-37196 1990-02-20
JP2037196A JP2777922B2 (en) 1990-02-20 1990-02-20 Magnetic disk drive
JP2-56422 1990-03-09
JP5642290A JP2725071B2 (en) 1990-03-09 1990-03-09 Magnetic disk drive

Publications (2)

Publication Number Publication Date
CA2025497A1 true CA2025497A1 (en) 1991-03-19
CA2025497C CA2025497C (en) 1996-05-28

Family

ID=27460375

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002025497A Expired - Fee Related CA2025497C (en) 1989-09-18 1990-09-17 Magnetic disk storage apparatus

Country Status (5)

Country Link
US (1) US5349486A (en)
EP (1) EP0419345B1 (en)
KR (1) KR950001611B1 (en)
CA (1) CA2025497C (en)
DE (1) DE69029496T2 (en)

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US8041449B2 (en) 2008-04-17 2011-10-18 Teradyne, Inc. Bulk feeding disk drives to disk drive testing systems
US8095234B2 (en) 2008-04-17 2012-01-10 Teradyne, Inc. Transferring disk drives within disk drive testing systems
US7848106B2 (en) 2008-04-17 2010-12-07 Teradyne, Inc. Temperature control within disk drive testing systems
US8102173B2 (en) 2008-04-17 2012-01-24 Teradyne, Inc. Thermal control system for test slot of test rack for disk drive testing system with thermoelectric device and a cooling conduit
US8305751B2 (en) 2008-04-17 2012-11-06 Teradyne, Inc. Vibration isolation within disk drive testing systems
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US8238099B2 (en) 2008-04-17 2012-08-07 Teradyne, Inc. Enclosed operating area for disk drive testing systems
US8160739B2 (en) 2008-04-17 2012-04-17 Teradyne, Inc. Transferring storage devices within storage device testing systems
US20090262455A1 (en) 2008-04-17 2009-10-22 Teradyne, Inc. Temperature Control Within Disk Drive Testing Systems
US8086343B2 (en) 2008-06-03 2011-12-27 Teradyne, Inc. Processing storage devices
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US8466699B2 (en) 2009-07-15 2013-06-18 Teradyne, Inc. Heating storage devices in a testing system
US8547123B2 (en) 2009-07-15 2013-10-01 Teradyne, Inc. Storage device testing system with a conductive heating assembly
US8628239B2 (en) 2009-07-15 2014-01-14 Teradyne, Inc. Storage device temperature sensing
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Also Published As

Publication number Publication date
EP0419345A2 (en) 1991-03-27
DE69029496T2 (en) 1997-04-10
KR950001611B1 (en) 1995-02-27
US5349486A (en) 1994-09-20
EP0419345B1 (en) 1996-12-27
CA2025497C (en) 1996-05-28
KR910006966A (en) 1991-04-30
DE69029496D1 (en) 1997-02-06
EP0419345A3 (en) 1992-11-25

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