JPS57167135A - Magnetic disc - Google Patents

Magnetic disc

Info

Publication number
JPS57167135A
JPS57167135A JP5010681A JP5010681A JPS57167135A JP S57167135 A JPS57167135 A JP S57167135A JP 5010681 A JP5010681 A JP 5010681A JP 5010681 A JP5010681 A JP 5010681A JP S57167135 A JPS57167135 A JP S57167135A
Authority
JP
Japan
Prior art keywords
region
magnetic disc
information recording
landing
magnetic
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
JP5010681A
Other languages
Japanese (ja)
Inventor
Yoshihiko Sato
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5010681A priority Critical patent/JPS57167135A/en
Publication of JPS57167135A publication Critical patent/JPS57167135A/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
    • G11B5/48—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
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion

Abstract

PURPOSE:To prevent the attraction phenomenon to set a magnetic head slider to a normal floating state in a short time when the rotation of a magnetic disc is started, by making the surface finish of a landing region rougher than that of an information recording region. CONSTITUTION:An information recording region 2 and a landing region 3 are provided on the surface of a magnetic disc, and the surface finish of the landing region 3 of the magnetic disc 1 is made rougher than that of the information recording region 2. For example, a recording layer 8 consisting of magnetic materials is formed on the surface of a magnetic disc blank plate 7 by the plating method or the like. The information recording region 2 and the landing region 3 are provided on this recording layer 8, and the information recording region 2 is worked precisely to <=0.015mum surface finish. The landing region 3 is worked to 0.15-0.2mum surface finish rougher than that of the region 2. When the magnetic disc 1 is not rotated, a magnetic head slider 5 holding a magnetic head 4 is always positioned in the landing region 3.
JP5010681A 1981-04-03 1981-04-03 Magnetic disc Pending JPS57167135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5010681A JPS57167135A (en) 1981-04-03 1981-04-03 Magnetic disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5010681A JPS57167135A (en) 1981-04-03 1981-04-03 Magnetic disc

Publications (1)

Publication Number Publication Date
JPS57167135A true JPS57167135A (en) 1982-10-14

Family

ID=12849825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5010681A Pending JPS57167135A (en) 1981-04-03 1981-04-03 Magnetic disc

Country Status (1)

Country Link
JP (1) JPS57167135A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193580A (en) * 1983-04-18 1984-11-02 Toshiba Corp Magnetic disk device
US5738906A (en) * 1995-03-31 1998-04-14 Ag Technology Co., Ltd. Method for producing a magnetic disk
US5870265A (en) * 1995-07-27 1999-02-09 Seagate Technology, Inc. Magnetic recording disc having an idle fly zone and tapering transition zones on each side thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193580A (en) * 1983-04-18 1984-11-02 Toshiba Corp Magnetic disk device
US5738906A (en) * 1995-03-31 1998-04-14 Ag Technology Co., Ltd. Method for producing a magnetic disk
US5870265A (en) * 1995-07-27 1999-02-09 Seagate Technology, Inc. Magnetic recording disc having an idle fly zone and tapering transition zones on each side thereof
US6075677A (en) * 1995-07-27 2000-06-13 Seagate Technology, Inc. Method for positioning a read/write head to reduce wear for proximity recording in a magnetic disk storage system
US6231801B1 (en) 1995-07-27 2001-05-15 Seagate Technology Llc Method to reduce wear for proximity recording in a magnetic disc storage system

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