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FR2402270A1 - METHOD OF MANUFACTURING A MAGNETIC TRANSDUCER HEAD AND A HEAD OBTAINED BY THIS PROCESS - Google Patents

METHOD OF MANUFACTURING A MAGNETIC TRANSDUCER HEAD AND A HEAD OBTAINED BY THIS PROCESS

Info

Publication number
FR2402270A1
FR2402270A1 FR7825348A FR7825348A FR2402270A1 FR 2402270 A1 FR2402270 A1 FR 2402270A1 FR 7825348 A FR7825348 A FR 7825348A FR 7825348 A FR7825348 A FR 7825348A FR 2402270 A1 FR2402270 A1 FR 2402270A1
Authority
FR
France
Prior art keywords
magnetic
magnetic transducer
write
head
read
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.)
Granted
Application number
FR7825348A
Other languages
French (fr)
Other versions
FR2402270B1 (en
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.)
Magnex Corp
Original Assignee
Magnex Corp
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 US05/830,104 external-priority patent/US4489484A/en
Application filed by Magnex Corp filed Critical Magnex Corp
Publication of FR2402270A1 publication Critical patent/FR2402270A1/en
Application granted granted Critical
Publication of FR2402270B1 publication Critical patent/FR2402270B1/en
Expired 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
    • G11B5/33—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
    • G11B5/3903—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 using magnetic thin film layers or their effects, the films being part of integrated structures
    • 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface
    • 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
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
    • 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
    • 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
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • 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
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic 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
    • G11B5/33—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
    • G11B5/3903—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 using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3967—Composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read
    • 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
    • G11B5/40—Protective measures on heads, e.g. against excessive temperature 

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)

Abstract

L'invention concerne un procédé de fabrication de têtes de transducteurs magnétiques de lecture/écriture rapide et les têtes obtenues. Le procédé consiste à disposer un substrat, d'épaisseur égale à la longueur du curseur souhaité, dans un milieu permettant de déposer par dépôts et attaques successives une formation de lecture/écriture magnétique avec des conducteurs associés en une zone d'un ensemble de zones de coordonnées prédéterminé sur la surface du substrat suivant lesquelles la surface est découpée pour former des assemblages curseur-tête de transducteur magnétique chaque tête comprenant un détecteur en couche mince magnétique, des conducteurs électriques de lecture et d'écriture, et, un blindage, un pôle de blindage et un pôle de bord arrière constitués de paires de films minces, de matériau magnétique et de matériau isolant, couplés magnétostatiquement ; en outre, une passivation de la surface mobile du curseur permet de stabiliser le transducteur magnétique. Application à la fabrication de têtes de lecture et d'enregistrement rapide.The invention relates to a method of manufacturing fast read / write magnetic transducer heads and the heads obtained. The method consists in placing a substrate, of thickness equal to the length of the desired cursor, in a medium making it possible to deposit by successive deposits and attacks a magnetic read / write formation with associated conductors in one zone of a set of zones. of predetermined coordinates on the surface of the substrate from which the surface is cut to form slider-magnetic transducer head assemblies each head including a magnetic thin film detector, electrical read and write conductors, and, a shield, a shield pole and a trailing edge pole made of pairs of thin films, magnetic material and insulating material, magnetostatically coupled; furthermore, passivation of the moving surface of the cursor makes it possible to stabilize the magnetic transducer. Application to the manufacture of rapid reading and recording heads.

FR7825348A 1977-09-02 1978-09-01 METHOD FOR MANUFACTURING A MAGNETIC TRANSDUCER HEAD AND HEAD OBTAINED BY THIS METHOD Expired FR2402270B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/830,104 US4489484A (en) 1977-09-02 1977-09-02 Method of making thin film magnetic recording heads
US90925878A 1978-05-24 1978-05-24

Publications (2)

Publication Number Publication Date
FR2402270A1 true FR2402270A1 (en) 1979-03-30
FR2402270B1 FR2402270B1 (en) 1987-11-20

Family

ID=27125321

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7825348A Expired FR2402270B1 (en) 1977-09-02 1978-09-01 METHOD FOR MANUFACTURING A MAGNETIC TRANSDUCER HEAD AND HEAD OBTAINED BY THIS METHOD

Country Status (6)

Country Link
JP (1) JPS5449109A (en)
CA (1) CA1134945A (en)
DE (1) DE2838263A1 (en)
FR (1) FR2402270B1 (en)
GB (1) GB2003647B (en)
NL (1) NL7809047A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019693A1 (en) * 1979-06-01 1980-12-10 International Business Machines Corporation A magnetic head slider assembly
FR2471019A1 (en) * 1979-11-28 1981-06-12 Philips Nv INTEGRATED MAGNETIC HEAD AND METHOD FOR MAKING THE HEAD

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8102148A (en) * 1981-05-01 1982-12-01 Philips Nv MAGNETIC TRANSFER ELEMENT AND MAGNETIC PERMEABLE PART FOR A MAGNETIC TRANSFER ELEMENT.
US4418472A (en) * 1981-11-23 1983-12-06 Xerox Corporation Method of delineating thin film magnetic head arrays
US4639806A (en) * 1983-09-09 1987-01-27 Sharp Kabushiki Kaisha Thin film magnetic head having a magnetized ferromagnetic film on the MR element
US4648087A (en) * 1984-06-28 1987-03-03 International Business Machines Corporation Capacitive sensing employing thin film inductors
DE3613619A1 (en) * 1985-04-26 1986-10-30 Sharp K.K., Osaka THICK FILM MAGNETIC HEAD
JPH0778309A (en) * 1993-07-14 1995-03-20 Sony Corp Thin film magnetic head, magneto-resistance effect magnetic head and composite magnetic head
JPH0817020A (en) * 1994-06-30 1996-01-19 Sony Corp Magneto-resistive thin-film magnetic head
US7609478B2 (en) * 2006-03-28 2009-10-27 Seagate Technology Llc Magnetic writer pole with a graded magnetic moment

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2092540A5 (en) * 1970-05-12 1972-01-21 Ibm
FR2165206A5 (en) * 1971-12-22 1973-08-03 Cii
FR2191186A1 (en) * 1972-07-03 1974-02-01 Inf Ci Interna
FR2205701A1 (en) * 1972-11-07 1974-05-31 Cii
FR2264350A1 (en) * 1974-03-11 1975-10-10 Cii
FR2272460A1 (en) * 1974-05-24 1975-12-19 Philips Nv
FR2282689A1 (en) * 1974-08-19 1976-03-19 Ibm MAGNETIC HEAD AND ITS MANUFACTURING PROCESS
JPS51131310A (en) * 1975-05-08 1976-11-15 Nippon Telegr & Teleph Corp <Ntt> Method of manufacturing magnetic field
JPS51151115A (en) * 1975-06-20 1976-12-25 Hitachi Ltd Manufacturing method of thin film integrated magnetic head
JPS5236016A (en) * 1975-09-17 1977-03-19 Hitachi Ltd Manufacturing method for floating magnetic head
FR2386098A1 (en) * 1977-03-31 1978-10-27 Ibm CORROSION RESISTANT THIN FILM MAGNETIC HEAD AND METHOD OF MANUFACTURING

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50143416A (en) * 1974-05-07 1975-11-18
JPS5884636A (en) * 1981-11-16 1983-05-20 Mazda Motor Corp Composition for coated sand
JPS5927195A (en) * 1982-08-06 1984-02-13 Mitsubishi Heavy Ind Ltd Repair of damaged tube

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2092540A5 (en) * 1970-05-12 1972-01-21 Ibm
FR2165206A5 (en) * 1971-12-22 1973-08-03 Cii
FR2191186A1 (en) * 1972-07-03 1974-02-01 Inf Ci Interna
FR2205701A1 (en) * 1972-11-07 1974-05-31 Cii
FR2264350A1 (en) * 1974-03-11 1975-10-10 Cii
FR2272460A1 (en) * 1974-05-24 1975-12-19 Philips Nv
FR2282689A1 (en) * 1974-08-19 1976-03-19 Ibm MAGNETIC HEAD AND ITS MANUFACTURING PROCESS
JPS51131310A (en) * 1975-05-08 1976-11-15 Nippon Telegr & Teleph Corp <Ntt> Method of manufacturing magnetic field
JPS51151115A (en) * 1975-06-20 1976-12-25 Hitachi Ltd Manufacturing method of thin film integrated magnetic head
JPS5236016A (en) * 1975-09-17 1977-03-19 Hitachi Ltd Manufacturing method for floating magnetic head
FR2386098A1 (en) * 1977-03-31 1978-10-27 Ibm CORROSION RESISTANT THIN FILM MAGNETIC HEAD AND METHOD OF MANUFACTURING

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ABJP/77 *
EXBK/70 *
EXBK/75 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019693A1 (en) * 1979-06-01 1980-12-10 International Business Machines Corporation A magnetic head slider assembly
FR2471019A1 (en) * 1979-11-28 1981-06-12 Philips Nv INTEGRATED MAGNETIC HEAD AND METHOD FOR MAKING THE HEAD

Also Published As

Publication number Publication date
FR2402270B1 (en) 1987-11-20
GB2003647B (en) 1982-05-06
JPS5449109A (en) 1979-04-18
GB2003647A (en) 1979-03-14
NL7809047A (en) 1979-03-06
CA1134945A (en) 1982-11-02
DE2838263A1 (en) 1979-03-08

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