FR2676301B1 - MAGNETIC WRITING AND READING HEAD WITH DISSYMMETRIC POLES WIDTH. - Google Patents

MAGNETIC WRITING AND READING HEAD WITH DISSYMMETRIC POLES WIDTH.

Info

Publication number
FR2676301B1
FR2676301B1 FR9105620A FR9105620A FR2676301B1 FR 2676301 B1 FR2676301 B1 FR 2676301B1 FR 9105620 A FR9105620 A FR 9105620A FR 9105620 A FR9105620 A FR 9105620A FR 2676301 B1 FR2676301 B1 FR 2676301B1
Authority
FR
France
Prior art keywords
dissymmetric
reading head
magnetic writing
poles width
poles
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
FR9105620A
Other languages
French (fr)
Other versions
FR2676301A1 (en
Inventor
Cuchet Robert
Fedeli Jean-Marc
Pisella Christian
Sibuet Henri
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR9105620A priority Critical patent/FR2676301B1/en
Publication of FR2676301A1 publication Critical patent/FR2676301A1/en
Application granted granted Critical
Publication of FR2676301B1 publication Critical patent/FR2676301B1/en
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
    • G11B5/33—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
    • G11B5/31—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
    • G11B5/3176—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps
    • G11B5/3179—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps the films being mainly disposed in parallel planes
    • G11B5/3183—Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps the films being mainly disposed in parallel planes intersecting the gap plane, e.g. "horizontal head structure"
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
FR9105620A 1991-05-07 1991-05-07 MAGNETIC WRITING AND READING HEAD WITH DISSYMMETRIC POLES WIDTH. Expired - Fee Related FR2676301B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9105620A FR2676301B1 (en) 1991-05-07 1991-05-07 MAGNETIC WRITING AND READING HEAD WITH DISSYMMETRIC POLES WIDTH.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9105620A FR2676301B1 (en) 1991-05-07 1991-05-07 MAGNETIC WRITING AND READING HEAD WITH DISSYMMETRIC POLES WIDTH.

Publications (2)

Publication Number Publication Date
FR2676301A1 FR2676301A1 (en) 1992-11-13
FR2676301B1 true FR2676301B1 (en) 1993-07-16

Family

ID=9412621

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9105620A Expired - Fee Related FR2676301B1 (en) 1991-05-07 1991-05-07 MAGNETIC WRITING AND READING HEAD WITH DISSYMMETRIC POLES WIDTH.

Country Status (1)

Country Link
FR (1) FR2676301B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724480B1 (en) * 1994-09-13 1996-12-06 Commissariat Energie Atomique MAGNETIC HEAD WITH HORIZONTAL POLAR PIECES
FR2780196B1 (en) * 1998-06-23 2000-09-22 Thomson Csf METHOD FOR PRODUCING A MAGNETIC RECORDING / READING HEAD AND APPLICATION TO A MATRIX HEAD

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01124105A (en) * 1987-11-10 1989-05-17 Nec Corp Magnetic head
EP0390347B1 (en) * 1989-03-28 1996-11-27 Quantum Corporation Recording head to optimize high density recording
FR2645314B1 (en) * 1989-03-29 1991-05-31 Commissariat Energie Atomique MAGNETORESISTANCE HEAD FOR LONGITUDINAL RECORDING AND METHOD FOR PRODUCING SUCH A HEAD

Also Published As

Publication number Publication date
FR2676301A1 (en) 1992-11-13

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Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse