JPH0520802B2 - - Google Patents

Info

Publication number
JPH0520802B2
JPH0520802B2 JP57179854A JP17985482A JPH0520802B2 JP H0520802 B2 JPH0520802 B2 JP H0520802B2 JP 57179854 A JP57179854 A JP 57179854A JP 17985482 A JP17985482 A JP 17985482A JP H0520802 B2 JPH0520802 B2 JP H0520802B2
Authority
JP
Japan
Prior art keywords
magnetic
magnetic layer
layer
thickness
recording
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 - Lifetime
Application number
JP57179854A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5971115A (ja
Inventor
Hitoshi Nakamura
Kazuo Shiiki
Isamu Yuhito
Yoshihiro Shiroishi
Hideo Fujiwara
Kiminari Shinagawa
Akyoshi Iijima
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 JP57179854A priority Critical patent/JPS5971115A/ja
Priority to US06/539,386 priority patent/US4636897A/en
Priority to EP83306171A priority patent/EP0107443B1/en
Priority to DE8383306171T priority patent/DE3380677D1/de
Publication of JPS5971115A publication Critical patent/JPS5971115A/ja
Publication of JPH0520802B2 publication Critical patent/JPH0520802B2/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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
JP57179854A 1982-10-15 1982-10-15 磁気ヘッド Granted JPS5971115A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP57179854A JPS5971115A (ja) 1982-10-15 1982-10-15 磁気ヘッド
US06/539,386 US4636897A (en) 1982-10-15 1983-10-06 Perpendicular magnetic recording and reproducing thin film head
EP83306171A EP0107443B1 (en) 1982-10-15 1983-10-12 Magnetic recording and reproducing thin film head
DE8383306171T DE3380677D1 (en) 1982-10-15 1983-10-12 Magnetic recording and reproducing thin film head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57179854A JPS5971115A (ja) 1982-10-15 1982-10-15 磁気ヘッド

Publications (2)

Publication Number Publication Date
JPS5971115A JPS5971115A (ja) 1984-04-21
JPH0520802B2 true JPH0520802B2 (en]) 1993-03-22

Family

ID=16073073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57179854A Granted JPS5971115A (ja) 1982-10-15 1982-10-15 磁気ヘッド

Country Status (4)

Country Link
US (1) US4636897A (en])
EP (1) EP0107443B1 (en])
JP (1) JPS5971115A (en])
DE (1) DE3380677D1 (en])

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940004986B1 (ko) * 1984-08-27 1994-06-09 가부시기가이샤 히다찌세이사꾸쇼 자성막의 제조방법 및 그것을 사용한 자기헤드
EP0186032B1 (de) * 1984-12-21 1989-05-24 Siemens Aktiengesellschaft Dünnfilm-Magnetkopf für ein senkrecht zu magnetisierendes Aufzeichnungsmedium
US4943879A (en) * 1986-08-22 1990-07-24 Hitachi, Ltd. Thin film magnetic head including magnetic layers having high saturation magnetic flux density and metal film for avoiding deterioration during manufacturing
JPS63177311A (ja) * 1987-01-19 1988-07-21 Hitachi Ltd 薄膜磁気ヘツド
JPS63195818A (ja) * 1987-02-09 1988-08-12 Fujitsu Ltd 薄膜磁気ヘツド
US5159511A (en) * 1987-04-01 1992-10-27 Digital Equipment Corporation Biasing conductor for MR head
US4982301A (en) * 1987-10-30 1991-01-01 Seagate Technology, Inc. Magnetic head for perpendicular magnetic recording system and process
US5108837A (en) * 1987-12-04 1992-04-28 Digital Equipment Corporation Laminated poles for recording heads
US5075956A (en) * 1988-03-16 1991-12-31 Digital Equipment Corporation Method of making recording heads with side shields
JPH073685B2 (ja) * 1989-03-20 1995-01-18 ヤマハ株式会社 薄膜磁気ヘッド
US5126907A (en) * 1989-05-24 1992-06-30 Hitachi, Ltd. Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density
EP0459426B1 (en) * 1990-05-31 1996-12-11 Sony Corporation Thin film magnetic head
JP3364511B2 (ja) * 1993-06-29 2003-01-08 株式会社日立製作所 薄膜磁気ヘッドの製造方法、および、薄膜磁気ヘッドの製造に用いる研磨用砥粒
US5452166A (en) * 1993-10-01 1995-09-19 Applied Magnetics Corporation Thin film magnetic recording head for minimizing undershoots and a method for manufacturing the same
US5617273A (en) * 1995-06-07 1997-04-01 International Business Machines Corporation Thin film slider with protruding R/W element formed by chemical-mechanical polishing
US5798897A (en) * 1996-10-21 1998-08-25 International Business Machines Corporation Inductive write head with insulation stack configured for eliminating reflective notching
US5805391A (en) * 1996-10-28 1998-09-08 International Business Machines Corporation Write head with recessed stitched yoke on a planar portion of an insulation layer defining zero throat height
US6181514B1 (en) * 1998-12-04 2001-01-30 International Business Machines Corporation Scaled write head with high recording density and high data rate
US6204999B1 (en) * 1998-12-23 2001-03-20 Read-Rite Corporation Method and system for providing a write head having a conforming pole structure
US6353511B1 (en) 1999-06-15 2002-03-05 Read-Rite Corporation Thin film write head for improved high speed and high density recording
US6496334B1 (en) 2000-05-26 2002-12-17 Read-Rite Corportion Data storage and retrieval apparatus with thin film read head having planarized extra gap and shield layers and method of fabrication thereof
US6801408B1 (en) 2000-11-02 2004-10-05 Western Digital (Fremont), Inc. Data storage and retrieval apparatus with thin film read head having a planar sensor element and an extra gap and method of fabrication thereof
JP3875020B2 (ja) 2000-12-26 2007-01-31 アルプス電気株式会社 垂直磁気記録ヘッドの製造方法
JP3875019B2 (ja) * 2000-12-26 2007-01-31 アルプス電気株式会社 垂直磁気記録ヘッドおよびその製造方法
JP3889222B2 (ja) * 2000-12-26 2007-03-07 アルプス電気株式会社 垂直磁気記録ヘッドの製造方法
JP3593312B2 (ja) * 2000-12-26 2004-11-24 アルプス電気株式会社 垂直磁気記録ヘッドおよびその製造方法
US7199973B2 (en) * 2003-09-26 2007-04-03 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording head with trailing shield throat height less than shaping layer distance from ABS
US7369358B2 (en) * 2004-02-05 2008-05-06 Seagate Technology Llc Grounded writer core
US7212379B2 (en) * 2004-03-31 2007-05-01 Hitachi Global Storage Technologies Netherlands B.V. Perpendicular magnetic recording head with flare and taper configurations
US7296337B2 (en) * 2004-05-25 2007-11-20 Hitachi Global Storage Technologies Netherlands B.V. Notched trailing shield for perpendicular write head
US7296339B1 (en) 2004-09-08 2007-11-20 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording head
US7343667B2 (en) * 2004-09-30 2008-03-18 Hitachi Global Storage Technologies Netherlands B.V. Methods of making a side-by-side read/write head with a self-aligned trailing shield structure
US7552523B1 (en) 2005-07-01 2009-06-30 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducer
US8333008B1 (en) 2005-07-29 2012-12-18 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducer
US7508627B1 (en) 2006-03-03 2009-03-24 Western Digital (Fremont), Llc Method and system for providing perpendicular magnetic recording transducers
US8141235B1 (en) 2006-06-09 2012-03-27 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducers
US8015692B1 (en) 2007-11-07 2011-09-13 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) head
US9099118B1 (en) 2009-05-26 2015-08-04 Western Digital (Fremont), Llc Dual damascene process for producing a PMR write pole
US8486285B2 (en) 2009-08-20 2013-07-16 Western Digital (Fremont), Llc Damascene write poles produced via full film plating

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344237A (en) * 1967-09-26 Desposited film transducing apparatus and method op producing the apparatus
US4036723A (en) * 1975-08-21 1977-07-19 International Business Machines Corporation RF bias sputtering method for producing insulating films free of surface irregularities
JPS5284722A (en) * 1975-12-31 1977-07-14 Fujitsu Ltd Thin film magnetic head and its production
JPS53121608A (en) * 1977-03-31 1978-10-24 Sony Corp Magnetic recording system
FR2428886A1 (fr) * 1978-06-13 1980-01-11 Cii Honeywell Bull Support d'information magnetique a enregistrement perpendiculaire
US4219854A (en) * 1978-12-21 1980-08-26 International Business Machines Corporation Thin film magnetic head assembly
US4190872A (en) * 1978-12-21 1980-02-26 International Business Machines Corporation Thin film inductive transducer
US4295173A (en) * 1979-10-18 1981-10-13 International Business Machines Corporation Thin film inductive transducer
JPS5661018A (en) * 1979-10-19 1981-05-26 Hitachi Ltd Manufacture of thin film magnetic head
IT1129437B (it) * 1980-12-16 1986-06-04 Olivetti & Co Spa Testina magnetica
JPS57126966A (en) * 1981-01-29 1982-08-06 Fujitsu Ltd Formation of thin film using mask
JPS57189320A (en) * 1981-05-15 1982-11-20 Comput Basic Mach Technol Res Assoc Thin film magnetic head
JPS57208618A (en) * 1981-06-19 1982-12-21 Hitachi Ltd Production of thin film magnetic head
JPS5819717A (ja) * 1981-07-30 1983-02-04 Fujitsu Ltd 垂直磁化記録再生用ヘッド
US4423451A (en) * 1981-08-10 1983-12-27 Sperry Corporation Thin film magnetic head having disparate poles for pulse asymmetry compensation
US4458280A (en) * 1982-01-18 1984-07-03 International Business Machines Corporation Servo writing transducer design and writing method
JPS58143414A (ja) * 1982-02-19 1983-08-26 Comput Basic Mach Technol Res Assoc 薄膜磁気ヘツド
JPS59104717A (ja) * 1982-12-08 1984-06-16 Comput Basic Mach Technol Res Assoc 薄膜磁気ヘツドおよびその製造方法

Also Published As

Publication number Publication date
EP0107443A2 (en) 1984-05-02
EP0107443B1 (en) 1989-10-04
DE3380677D1 (en) 1989-11-09
EP0107443A3 (en) 1986-03-26
JPS5971115A (ja) 1984-04-21
US4636897A (en) 1987-01-13

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