FR2362465B1 - - Google Patents

Info

Publication number
FR2362465B1
FR2362465B1 FR7724487A FR7724487A FR2362465B1 FR 2362465 B1 FR2362465 B1 FR 2362465B1 FR 7724487 A FR7724487 A FR 7724487A FR 7724487 A FR7724487 A FR 7724487A FR 2362465 B1 FR2362465 B1 FR 2362465B1
Authority
FR
France
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
Application number
FR7724487A
Other versions
FR2362465A1 (fr
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 JP9802076A external-priority patent/JPS5322725A/ja
Priority claimed from JP458377A external-priority patent/JPS5389719A/ja
Priority claimed from JP1696877A external-priority patent/JPS53102014A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of FR2362465A1 publication Critical patent/FR2362465A1/fr
Application granted granted Critical
Publication of FR2362465B1 publication Critical patent/FR2362465B1/fr
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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/23—Gap features
    • G11B5/235—Selection of material for gap filler
    • 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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G11B5/11—Shielding of head against electric or magnetic fields
    • 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
    • G11B5/21—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being of ferrous sheet metal or other magnetic 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/255—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for protection against wear
    • 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
    • Y10T29/49034—Treating to affect magnetic properties
    • 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
    • Y10T29/49041—Fabricating head structure or component thereof including measuring or testing with significant slider/housing shaping or treating

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Soft Magnetic Materials (AREA)
FR7724487A 1976-08-16 1977-08-09 Tete magnetique et procede pour sa fabrication Granted FR2362465A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP9802076A JPS5322725A (en) 1976-08-16 1976-08-16 Magnetic head and its production
JP458377A JPS5389719A (en) 1977-01-18 1977-01-18 Magnetic head
JP1696877A JPS53102014A (en) 1977-02-17 1977-02-17 Magnetic head and its manufacture

Publications (2)

Publication Number Publication Date
FR2362465A1 FR2362465A1 (fr) 1978-03-17
FR2362465B1 true FR2362465B1 (fr) 1984-07-27

Family

ID=27276356

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724487A Granted FR2362465A1 (fr) 1976-08-16 1977-08-09 Tete magnetique et procede pour sa fabrication

Country Status (4)

Country Link
US (1) US4251297A (fr)
CA (1) CA1103800A (fr)
FR (1) FR2362465A1 (fr)
GB (1) GB1587882A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT365804B (de) * 1977-12-20 1982-02-25 Bogen Wolfgang Abriebfester magnetkopf
NL8006715A (nl) * 1980-12-11 1982-07-01 Philips Nv Magneetkop en werkwijze voor het vervaardigen van een magneetkop.
US4777068A (en) * 1984-08-10 1988-10-11 Canon Kabushiki Kaisha Optical recording medium
US4863809A (en) 1988-03-10 1989-09-05 Magnetic Peripherals, Inc. Surface treatment for sliders and carbon coated magnetic media
US5118577A (en) * 1988-03-10 1992-06-02 Magnetic Peripherals Inc. Plasma treatment for ceramic materials
US4885650A (en) * 1988-04-25 1989-12-05 Unisys Corporation Magnetic head having boron carbide surfaces
US5001589A (en) * 1989-05-31 1991-03-19 Seagate Technology, Inc. Tungsten and tantalum diffusion barriers for Metal-In-Gap magnetic heads
JPH06325322A (ja) * 1993-03-16 1994-11-25 Sharp Corp 薄膜磁気ヘッドおよびその製造方法
WO1995019884A1 (fr) * 1994-01-21 1995-07-27 The Regents Of The Universtiy Of California Traitement de surface d'articles ceramiques
US5476691A (en) * 1994-01-21 1995-12-19 International Business Machines, Inc. Surface treatment of magnetic recording heads
US6236537B1 (en) * 1997-10-28 2001-05-22 Hewlett-Packard Co. Wear resistant magnetic write head

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA713972A (en) * 1965-07-20 L. Hill Vernon Method and apparatus for boronizing
US2866011A (en) * 1954-07-13 1958-12-23 Clevite Corp Magnetic transducer head
GB950767A (en) 1961-09-12 1964-02-26 Lucas Industries Ltd Surface hardening of ferrous materials or nickel-base or cobalt-base alloys
US3787245A (en) * 1970-10-26 1974-01-22 Inst Haertereitechn Method for the boration of titanium and titanium alloys
US3886025A (en) * 1972-08-24 1975-05-27 Ibm Ferrite head
US3922038A (en) * 1973-08-10 1975-11-25 Hughes Tool Co Wear resistant boronized surfaces and boronizing methods
US4011107A (en) * 1974-06-17 1977-03-08 Howmet Corporation Boron diffusion coating process
FR2284159A1 (fr) * 1974-09-06 1976-04-02 Thomson Csf Methode de fabrication de tetes magnetiques de lecture, d'ecriture et d'effacement pour memoires a support defilant, et tete obtenue par ladite methode
JPS51122417A (en) * 1975-04-18 1976-10-26 Furukawa Electric Co Ltd:The Wear-proof magnetic head core
JPS5214516A (en) * 1975-07-26 1977-02-03 Furukawa Electric Co Ltd:The Wear resistant alloys with a high permeability

Also Published As

Publication number Publication date
GB1587882A (en) 1981-04-08
US4251297A (en) 1981-02-17
FR2362465A1 (fr) 1978-03-17
CA1103800A (fr) 1981-06-23

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Legal Events

Date Code Title Description
ST Notification of lapse