JPS57176538A - Magnetic disc - Google Patents

Magnetic disc

Info

Publication number
JPS57176538A
JPS57176538A JP6010581A JP6010581A JPS57176538A JP S57176538 A JPS57176538 A JP S57176538A JP 6010581 A JP6010581 A JP 6010581A JP 6010581 A JP6010581 A JP 6010581A JP S57176538 A JPS57176538 A JP S57176538A
Authority
JP
Japan
Prior art keywords
magnetic
density
disc
high density
position information
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.)
Pending
Application number
JP6010581A
Other languages
Japanese (ja)
Inventor
Masao Fujiki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6010581A priority Critical patent/JPS57176538A/en
Publication of JPS57176538A publication Critical patent/JPS57176538A/en
Pending 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

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To realize the high density and large capacity of data storage areas, by making recording bits toward linear direction with the vertical magnetic recording and high density of tracks accompanied with the head alignment control caused by stable position information with high accuracy on a disc base. CONSTITUTION:On a nonmagnetic substance disc base 1 (such as polyester) the 1st magnetic substance layer 2 having easy magnetization axis within the surface and the 2nd magnetic substance layer 3 having the easy magnetization axis vertically are laminated. With this construction, the data per area can be increased by the product of the track density and the line bit density. A magnetic head 11 of a magnetic disc 10 is accurately controlled with an arm 12 positioned on a track and a discriminator 14 (filter circuit) discriminating position information and data, and an amplifier 13. That is, at write/read, the magnetic disc controlled with high accuracy, high density and large capacity can be constituted.
JP6010581A 1981-04-21 1981-04-21 Magnetic disc Pending JPS57176538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6010581A JPS57176538A (en) 1981-04-21 1981-04-21 Magnetic disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6010581A JPS57176538A (en) 1981-04-21 1981-04-21 Magnetic disc

Publications (1)

Publication Number Publication Date
JPS57176538A true JPS57176538A (en) 1982-10-29

Family

ID=13132484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6010581A Pending JPS57176538A (en) 1981-04-21 1981-04-21 Magnetic disc

Country Status (1)

Country Link
JP (1) JPS57176538A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5085306A (en) * 1973-10-31 1975-07-09
JPS5189701A (en) * 1974-12-31 1976-08-06 Katoseinotaso jikikirokutantai
JPS5485007A (en) * 1977-12-19 1979-07-06 Hitachi Maxell Magnetic recording medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5085306A (en) * 1973-10-31 1975-07-09
JPS5189701A (en) * 1974-12-31 1976-08-06 Katoseinotaso jikikirokutantai
JPS5485007A (en) * 1977-12-19 1979-07-06 Hitachi Maxell Magnetic recording medium

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