GB1533778A - Magnetic test disc - Google Patents

Magnetic test disc

Info

Publication number
GB1533778A
GB1533778A GB1065176A GB1065176A GB1533778A GB 1533778 A GB1533778 A GB 1533778A GB 1065176 A GB1065176 A GB 1065176A GB 1065176 A GB1065176 A GB 1065176A GB 1533778 A GB1533778 A GB 1533778A
Authority
GB
United Kingdom
Prior art keywords
signals
test
head
disc
groups
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.)
Expired
Application number
GB1065176A
Other languages
English (en)
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of GB1533778A publication Critical patent/GB1533778A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • G11B5/016—Recording on, or reproducing or erasing from, magnetic disks using magnetic foils
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/30—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture with provision for auxiliary signals
    • G11B23/36—Signals on record carriers or on containers and recorded by the same method as the main recording
    • 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
    • G11B33/10—Indicating arrangements; Warning arrangements
    • 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
    • G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for heads
    • 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
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5534—Initialisation, calibration, e.g. cylinder "set-up"
    • 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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
GB1065176A 1975-12-02 1976-03-17 Magnetic test disc Expired GB1533778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752554083 DE2554083C2 (de) 1975-12-02 1975-12-02 Magnetplatte, insbesondere flexible Magnetplatte, zur Einstellung und Kontrolle eines Aufzeichnungs- und/oder Wiedergabegeräts

Publications (1)

Publication Number Publication Date
GB1533778A true GB1533778A (en) 1978-11-29

Family

ID=5963217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1065176A Expired GB1533778A (en) 1975-12-02 1976-03-17 Magnetic test disc

Country Status (4)

Country Link
JP (2) JPS597142B2 (enrdf_load_stackoverflow)
CA (1) CA1084621A (enrdf_load_stackoverflow)
DE (1) DE2554083C2 (enrdf_load_stackoverflow)
GB (1) GB1533778A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093886A3 (en) * 1982-06-22 1984-01-18 International Business Machines Corporation Manufacturing method and apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4456938A (en) * 1982-10-12 1984-06-26 International Business Machines Corporation Manufacturing apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4458274A (en) * 1982-06-22 1984-07-03 International Business Machines Corporation Manufacturing method and apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4458398A (en) * 1982-06-30 1984-07-10 International Business Machines Corporation Manufacturing apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4746580A (en) * 1983-03-31 1988-05-24 International Business Machines Corporation Read-only magnetic recording media
AU576859B2 (en) * 1984-05-18 1988-09-08 Basf Aktiengesellschaft Detecting error signals in a disk drive

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157577A (en) * 1977-11-14 1979-06-05 International Business Machines Corporation Rotatable storage apparatus with digitally responsive circuitry for track selection
DE3009548A1 (de) * 1980-03-13 1981-09-24 Ibm Deutschland Gmbh, 7000 Stuttgart Spurnachlaufsteuerung fuer magnetkoepfe sowie verfahren zur kompensation gleichfoermiger stoergroessen
US4542428A (en) * 1982-10-01 1985-09-17 Matsushita Electric Industrial Co., Ltd. Disk for measuring off-track quantity of magnetic head, and measuring apparatus using the disk
US4513331A (en) * 1982-10-12 1985-04-23 Dysan Corporation Method and apparatus for disk drive alignment
JPS59112318U (ja) * 1983-01-13 1984-07-28 アルプス電気株式会社 ヘツド調整用デイスク
JPS60140576A (ja) * 1983-12-28 1985-07-25 Hitachi Ltd 調整用磁気記録媒体
JPS60134733U (ja) * 1984-02-18 1985-09-07 梶田　肇 つまみ等を受容する容器付きの罐、瓶等
JPS62122029U (enrdf_load_stackoverflow) * 1986-01-25 1987-08-03
JPS62201005U (enrdf_load_stackoverflow) * 1986-06-12 1987-12-22

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093886A3 (en) * 1982-06-22 1984-01-18 International Business Machines Corporation Manufacturing method and apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4458274A (en) * 1982-06-22 1984-07-03 International Business Machines Corporation Manufacturing method and apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4458398A (en) * 1982-06-30 1984-07-10 International Business Machines Corporation Manufacturing apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4456938A (en) * 1982-10-12 1984-06-26 International Business Machines Corporation Manufacturing apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4746580A (en) * 1983-03-31 1988-05-24 International Business Machines Corporation Read-only magnetic recording media
AU576859B2 (en) * 1984-05-18 1988-09-08 Basf Aktiengesellschaft Detecting error signals in a disk drive

Also Published As

Publication number Publication date
JPS597142B2 (ja) 1984-02-16
DE2554083C2 (de) 1985-03-28
JPS5269309A (en) 1977-06-09
JPS629571Y2 (enrdf_load_stackoverflow) 1987-03-05
CA1084621A (en) 1980-08-26
JPS61105968U (enrdf_load_stackoverflow) 1986-07-05
DE2554083A1 (de) 1977-06-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930317