DE68914314T2 - Markierung zur Auswertung von der Bearbeitungshöhe und Herstellungsverfahren eines Dünnfilm-Magnetkopfes. - Google Patents

Markierung zur Auswertung von der Bearbeitungshöhe und Herstellungsverfahren eines Dünnfilm-Magnetkopfes.

Info

Publication number
DE68914314T2
DE68914314T2 DE68914314T DE68914314T DE68914314T2 DE 68914314 T2 DE68914314 T2 DE 68914314T2 DE 68914314 T DE68914314 T DE 68914314T DE 68914314 T DE68914314 T DE 68914314T DE 68914314 T2 DE68914314 T2 DE 68914314T2
Authority
DE
Germany
Prior art keywords
marking
evaluating
thin
manufacturing process
magnetic 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 - Lifetime
Application number
DE68914314T
Other languages
English (en)
Other versions
DE68914314D1 (de
Inventor
Naoto Matono
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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
Priority claimed from JP29182388A external-priority patent/JPH02137109A/ja
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Application granted granted Critical
Publication of DE68914314D1 publication Critical patent/DE68914314D1/de
Publication of DE68914314T2 publication Critical patent/DE68914314T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G11B5/313—Disposition of layers
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
    • G11B5/314—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure where the layers are extra layers normally not provided in the transducing structure, e.g. optical layers
    • 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
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • G11B5/3106—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
    • Y10T29/49037—Using reference point/surface to facilitate measuring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
DE68914314T 1988-04-06 1989-04-05 Markierung zur Auswertung von der Bearbeitungshöhe und Herstellungsverfahren eines Dünnfilm-Magnetkopfes. Expired - Lifetime DE68914314T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8443688 1988-04-06
JP29182388A JPH02137109A (ja) 1988-11-16 1988-11-16 薄膜磁気ヘッド

Publications (2)

Publication Number Publication Date
DE68914314D1 DE68914314D1 (de) 1994-05-11
DE68914314T2 true DE68914314T2 (de) 1994-10-27

Family

ID=26425482

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68914314T Expired - Lifetime DE68914314T2 (de) 1988-04-06 1989-04-05 Markierung zur Auswertung von der Bearbeitungshöhe und Herstellungsverfahren eines Dünnfilm-Magnetkopfes.

Country Status (5)

Country Link
US (1) US5056353A (de)
EP (1) EP0336395B1 (de)
KR (1) KR890016509A (de)
CA (1) CA1317672C (de)
DE (1) DE68914314T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331495A (en) * 1990-06-11 1994-07-19 Fuji Photo Film Co., Ltd. Thin film magnetic head and methods for producing same
CA2060956C (en) * 1991-02-12 2000-04-11 Jesse N. Matossian Evaluation of the extent of wear of articles
JPH04301205A (ja) * 1991-03-28 1992-10-23 Ngk Insulators Ltd 磁気ヘッド用コアチップ及びそれを用いた磁気ヘッド用コアスライダの製造法
US5815909A (en) * 1994-08-26 1998-10-06 Aiwa Research And Development, Inc. Method of making a thin film magnetic head including protected via connections through an electrically insulative substrate
US5579717A (en) * 1994-10-13 1996-12-03 International Business Machines Corporation Method of grinding thin-film magnetic heads using optical grinding markers
JPH08304010A (ja) * 1995-04-28 1996-11-22 Sony Corp デプスセンサー
JP3091404B2 (ja) * 1995-11-09 2000-09-25 富士通株式会社 磁気ヘッドの製造方法
US5742995A (en) * 1996-05-24 1998-04-28 Seagate Technology, Inc. Method to predict an accurate MR sensor dimension when viewed from abs
US5956564A (en) * 1997-06-03 1999-09-21 Ultratech Stepper, Inc. Method of making a side alignment mark
JP2005276359A (ja) * 2004-03-25 2005-10-06 Sony Corp 磁気ヘッド装置、回転ヘッド装置、磁気テープ装置、磁気ディスク装置、磁気記録方法
US7996986B2 (en) * 2009-02-13 2011-08-16 Seagate Technology Llc Apparatus for forming magnetic recording heads

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8200531A (nl) * 1982-02-12 1983-09-01 Philips Nv Magneetkop met gedeeltelijk uitgeetste wikkelopening.
JPS58177517A (ja) * 1982-04-09 1983-10-18 Trio Kenwood Corp 薄膜磁気ヘツドの製造方法
JPS61267913A (ja) * 1985-05-21 1986-11-27 Toshiba Corp 薄膜磁気ヘツド
JPS6222220A (ja) * 1985-07-22 1987-01-30 Sony Corp 薄膜磁気ヘツド
JPS6222219A (ja) * 1985-07-22 1987-01-30 Sony Corp 薄膜磁気ヘツド
JP2572213B2 (ja) * 1986-04-03 1997-01-16 富士写真フイルム株式会社 薄膜磁気ヘツド

Also Published As

Publication number Publication date
KR890016509A (ko) 1989-11-29
EP0336395A2 (de) 1989-10-11
EP0336395B1 (de) 1994-04-06
CA1317672C (en) 1993-05-11
EP0336395A3 (en) 1990-11-28
US5056353A (en) 1991-10-15
DE68914314D1 (de) 1994-05-11

Similar Documents

Publication Publication Date Title
DE69031136D1 (de) Vorrichtung zur Regelung der Position eines Magnetkopfes
DE69011603T2 (de) Magnetkopf mit magnetowiderstand für longitudinale aufzeichnung und herstellungsverfahren eines derartigen kopfes.
DE69032389T2 (de) Prozess und Gerät zur Erhaltung der Datenintegrität einer Datenbank
DE3578017D1 (de) Verfahren und vorrichtung zur regelung der flughoehe des kopfes in einem magnetspeicher.
DE68920821D1 (de) Magnetische Medien enthaltende Referenzeinrichtung und Verfahren zur Ermittlung einer Magnetkopflage hinsichtlich der Referenzeinrichtung.
DE69019282T2 (de) Herstellungsverfahren eines Magnetaufzeichnungskopfes und nach diesem Verfahren erhaltener Kopf.
DE69025655D1 (de) Herstellungsverfahren eines Mehrspur-Magnetkopfes und Mehrspur-Magnetkopf
DE68925205T2 (de) Methode zur Einstellung der magnetischen Domäne-Struktur eines magnetoresistiven Fühlers
DE69016834D1 (de) Herstellungsverfahren eines Magnetkopfes.
DE3680236D1 (de) Magnetkopf und verfahren zu dessen herstellung.
DE3676145D1 (de) Verfahren und anordnung zur weiterleitung eines kundenauftrags.
DE68914314T2 (de) Markierung zur Auswertung von der Bearbeitungshöhe und Herstellungsverfahren eines Dünnfilm-Magnetkopfes.
DE3855800D1 (de) Magnetkopf und dessen Herstellungsverfahren
KR910001731A (ko) 자기헤드용 서스펜션 및 그 제조방법
DE59008987D1 (de) Verfahren und Anordnung zur Begrenzung des Bewegungsbereichs eines Krans.
DE3870861D1 (de) Vorrichtung mit grossem bereich zur kontrolle der linearen dimensionen eines teiles.
DE3686803T2 (de) Verfahren und vorrichtung zur ablesung eines bandmusters.
DE3884115T2 (de) Verfahren und Anordnung zur Abschätzung der elektromagnetischen Eigenschaften eines dielektrischen oder magnetischen Werkstoffes.
DE68915569D1 (de) Unmagnetisches Substrat eines Magnetkopfs, Magnetkopf und Substratherstellungsverfahren.
AT399410B (de) Einrichtung zur erfassung, speicherung und auswertung der daten eines kontrollvorganges
DE69022352T2 (de) Verfahren zum Aufzeichnen und Nachweisen eines Musters von ionisierender Strahlung.
DE68917507T2 (de) Schwebender Magnetkopf und Herstellungsverfahren.
DE68914741T2 (de) Magnetkopf und Herstellungsverfahren.
DE68912525D1 (de) Magnetmaterial, Verfahren zur Herstellung und Magnetkopf.
DE58904810D1 (de) Spulenkoerper und verfahren zur hestellung eines spulenkoerpers.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee