JP2703079B2 - 磁気デイスク装置および情報の記録・再生方法 - Google Patents

磁気デイスク装置および情報の記録・再生方法

Info

Publication number
JP2703079B2
JP2703079B2 JP1321445A JP32144589A JP2703079B2 JP 2703079 B2 JP2703079 B2 JP 2703079B2 JP 1321445 A JP1321445 A JP 1321445A JP 32144589 A JP32144589 A JP 32144589A JP 2703079 B2 JP2703079 B2 JP 2703079B2
Authority
JP
Japan
Prior art keywords
magnetic
film
thin
magnetic disk
head
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 - Fee Related
Application number
JP1321445A
Other languages
English (en)
Japanese (ja)
Other versions
JPH03185601A (ja
Inventor
勝也 光岡
宏 福井
誠 相原
正則 田辺
盛明 府山
真治 成重
愃 杉田
芳博 城石
基 青井
翼生 斎藤
寛治 川上
義一 辻
将章 林
和夫 中越
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
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1321445A priority Critical patent/JP2703079B2/ja
Priority to DE19904039852 priority patent/DE4039852A1/de
Publication of JPH03185601A publication Critical patent/JPH03185601A/ja
Priority to US08/399,221 priority patent/US5671107A/en
Application granted granted Critical
Publication of JP2703079B2 publication Critical patent/JP2703079B2/ja
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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • 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
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Record Carriers (AREA)
JP1321445A 1989-12-13 1989-12-13 磁気デイスク装置および情報の記録・再生方法 Expired - Fee Related JP2703079B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1321445A JP2703079B2 (ja) 1989-12-13 1989-12-13 磁気デイスク装置および情報の記録・再生方法
DE19904039852 DE4039852A1 (de) 1989-12-13 1990-12-13 Magnetplattenvorrichtung und verfahren zur informationsaufzeichnung und -wiedergabe
US08/399,221 US5671107A (en) 1989-12-13 1995-03-06 Large capacity magnetic disc apparatus with a particular relationship between pole thickness, saturated flux density, and recording wavelength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1321445A JP2703079B2 (ja) 1989-12-13 1989-12-13 磁気デイスク装置および情報の記録・再生方法

Publications (2)

Publication Number Publication Date
JPH03185601A JPH03185601A (ja) 1991-08-13
JP2703079B2 true JP2703079B2 (ja) 1998-01-26

Family

ID=18132638

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1321445A Expired - Fee Related JP2703079B2 (ja) 1989-12-13 1989-12-13 磁気デイスク装置および情報の記録・再生方法

Country Status (2)

Country Link
JP (1) JP2703079B2 (de)
DE (1) DE4039852A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998036410A1 (fr) * 1997-02-17 1998-08-20 Hitachi, Ltd. Tete magnetique a couche mince, tete d'enregistrement/reproduction de type a separation, appareil a disque magnetique et procede de production de tete magnetique a couche mince

Also Published As

Publication number Publication date
JPH03185601A (ja) 1991-08-13
DE4039852A1 (de) 1991-06-20

Similar Documents

Publication Publication Date Title
US5995341A (en) Magnetic disk drive recording a signal with a skew angle
US6954340B2 (en) Perpendicular magnetic recording head with nonmagnetic write gap greater than twice side shield gap distance
US7031121B2 (en) Perpendicular recording magnetic head with a write shield magnetically coupled to a first pole piece
US5590008A (en) Magnetic disc unit having a plurality of magnetic heads which include multilayer magnetic films
US9171555B2 (en) Magnetic flux barrier
US11682418B2 (en) Areal density capability improvement with a main pole skin
JPH02247809A (ja) 磁気ディスク装置及びこれに搭載する薄膜磁気ヘッドとその製造方法並びに情報の書込み・読出方法
JP3172000B2 (ja) 磁気記録再生装置
JP2585400B2 (ja) 磁気デイスク装置
US7057837B2 (en) Flux closed single pole perpendicular head for ultra narrow track
WO1997008687A1 (fr) Tete magnetique et systeme de memoire magnetique faisant appel a cette derniere
JP3367877B2 (ja) 薄膜磁気ヘッド及びその製造方法
US5296979A (en) Magnetic disc apparatus with thin film head suitable for high-density recording
JP2703079B2 (ja) 磁気デイスク装置および情報の記録・再生方法
US10755736B2 (en) Microwave-assisted magnetic recording apparatus and method
US20060001994A1 (en) Method, apparatus and program storage device for dynamically adjusting the write current in each head to compensate for variation in disk drive and environmental parameters
US5671107A (en) Large capacity magnetic disc apparatus with a particular relationship between pole thickness, saturated flux density, and recording wavelength
JPH0476171B2 (de)
US6985322B2 (en) Perpendicular recording and read head assembly with in situ stand alone stabilizer for a magnetic medium underlayer
JP3721167B2 (ja) 磁気ディスク装置
EP1944762A2 (de) Magnetplattenvorrichtung
JP3447845B2 (ja) 磁気ヘッド
JPH05120630A (ja) 磁気デイスク装置
JP2958187B2 (ja) 磁気ディスク装置
JPH0283801A (ja) 薄膜磁気ヘッドとそれを用いた磁気ディスク装置及び情報の記録再生方法

Legal Events

Date Code Title Description
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081003

Year of fee payment: 11

LAPS Cancellation because of no payment of annual fees