JPS56107373A - Magnetic disc device - Google Patents

Magnetic disc device

Info

Publication number
JPS56107373A
JPS56107373A JP879480A JP879480A JPS56107373A JP S56107373 A JPS56107373 A JP S56107373A JP 879480 A JP879480 A JP 879480A JP 879480 A JP879480 A JP 879480A JP S56107373 A JPS56107373 A JP S56107373A
Authority
JP
Japan
Prior art keywords
magnetic
servo
index
head
magnetic disc
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
JP879480A
Other languages
Japanese (ja)
Other versions
JPS641874B2 (en
Inventor
Nobuyoshi Ushijima
Takuji Ogawa
Shuichi Takanami
Hiroshi Nakanishi
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.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone Corp
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 Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP879480A priority Critical patent/JPS56107373A/en
Publication of JPS56107373A publication Critical patent/JPS56107373A/en
Publication of JPS641874B2 publication Critical patent/JPS641874B2/ja
Granted 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
    • G11B5/48—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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE:To enable to write-in continuous by constituting the head of any positioning device of a magnetic disc device consisting of a plurality of magnetic discs, magnetic heads and magnetic head positioning devices is matched to the start point of the information recording track. CONSTITUTION:A plurality of magnetic discs 1 are fitted to one common rotating shaft 2. Magnetic head positioning devices 3, 4 are provided with 180 deg. opposition, and the servo heads 5, 7 and data heads 6, 8 are provided. The index 11 at the servo information recording surface 9 of the magnetic disc 1 and the index 12 of the servo information recording plane 10 are apart by 180 deg., and when the servo head 7 is matched to the index 11, the servo head 5 is a position to detect the index 12. By using the positioning devices with selection, data can continuously be written in the magnetic disc 1.
JP879480A 1980-01-30 1980-01-30 Magnetic disc device Granted JPS56107373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP879480A JPS56107373A (en) 1980-01-30 1980-01-30 Magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP879480A JPS56107373A (en) 1980-01-30 1980-01-30 Magnetic disc device

Publications (2)

Publication Number Publication Date
JPS56107373A true JPS56107373A (en) 1981-08-26
JPS641874B2 JPS641874B2 (en) 1989-01-12

Family

ID=11702767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP879480A Granted JPS56107373A (en) 1980-01-30 1980-01-30 Magnetic disc device

Country Status (1)

Country Link
JP (1) JPS56107373A (en)

Also Published As

Publication number Publication date
JPS641874B2 (en) 1989-01-12

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