FR1511379A - Procédé de fabrication d'un noyau de tête magnétique et nouveaux produits ainsi obtenus - Google Patents

Procédé de fabrication d'un noyau de tête magnétique et nouveaux produits ainsi obtenus

Info

Publication number
FR1511379A
FR1511379A FR94879A FR94879A FR1511379A FR 1511379 A FR1511379 A FR 1511379A FR 94879 A FR94879 A FR 94879A FR 94879 A FR94879 A FR 94879A FR 1511379 A FR1511379 A FR 1511379A
Authority
FR
France
Prior art keywords
manufacturing
magnetic head
new products
head core
core
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
Application number
FR94879A
Other languages
English (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.)
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 to GB6298/67A priority Critical patent/GB1144285A/en
Priority to US614889A priority patent/US3557266A/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to FR94879A priority patent/FR1511379A/fr
Priority to NL6702239A priority patent/NL6702239A/xx
Priority to DE19671646728 priority patent/DE1646728C3/de
Application granted granted Critical
Publication of FR1511379A publication Critical patent/FR1511379A/fr
Priority to US00341491A priority patent/US3843541A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/32—Burning methods
    • C04B33/326—Burning methods under pressure
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/32—Burning methods
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
    • 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
    • G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
    • H01F1/37—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
    • 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
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Magnetic Heads (AREA)
  • Soft Magnetic Materials (AREA)
  • Ceramic Products (AREA)
FR94879A 1967-02-09 1967-02-14 Procédé de fabrication d'un noyau de tête magnétique et nouveaux produits ainsi obtenus Expired FR1511379A (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB6298/67A GB1144285A (en) 1967-02-09 1967-02-09 Improvements in and relating to magnetic materials and devices
US614889A US3557266A (en) 1967-02-09 1967-02-09 Method of eliminating the porosity and controlling the grain size of a ferrite body by a two stage hot pressing treatment
FR94879A FR1511379A (fr) 1967-02-09 1967-02-14 Procédé de fabrication d'un noyau de tête magnétique et nouveaux produits ainsi obtenus
NL6702239A NL6702239A (fr) 1967-02-09 1967-02-14
DE19671646728 DE1646728C3 (de) 1967-02-14 1967-02-14 Verfahren zur Herstellung eines Magnetkopf kernes aus Ferrit
US00341491A US3843541A (en) 1967-02-09 1973-03-14 Magnetic head core of large grain size and low porosity

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US61488967A 1967-02-09 1967-02-09
GB6298/67A GB1144285A (en) 1967-02-09 1967-02-09 Improvements in and relating to magnetic materials and devices
FR94879A FR1511379A (fr) 1967-02-09 1967-02-14 Procédé de fabrication d'un noyau de tête magnétique et nouveaux produits ainsi obtenus
NL6702239A NL6702239A (fr) 1967-02-09 1967-02-14
DEM0072751 1967-02-14
US00341491A US3843541A (en) 1967-02-09 1973-03-14 Magnetic head core of large grain size and low porosity

Publications (1)

Publication Number Publication Date
FR1511379A true FR1511379A (fr) 1968-01-26

Family

ID=27544888

Family Applications (1)

Application Number Title Priority Date Filing Date
FR94879A Expired FR1511379A (fr) 1967-02-09 1967-02-14 Procédé de fabrication d'un noyau de tête magnétique et nouveaux produits ainsi obtenus

Country Status (4)

Country Link
US (2) US3557266A (fr)
FR (1) FR1511379A (fr)
GB (1) GB1144285A (fr)
NL (1) NL6702239A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433803A1 (fr) * 1978-07-24 1980-03-14 Magnetic Peripherals Inc Noyau de transducteur magnetique et son procede de fabrication

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1276692A (en) * 1968-06-26 1972-06-07 Tokyo Shibaura Electric Co A magnetic head and a method for manufacturing the same
US3999216A (en) * 1970-07-30 1976-12-21 Eastman Kodak Company Material for magnetic transducer heads
US3813693A (en) * 1970-08-28 1974-05-28 Ampex Magnetic head with protective pockets of glass adjacent the corners of the gap
US3761641A (en) * 1971-06-25 1973-09-25 Ampex Magnetic head with demountable face part assembly
US3843968A (en) * 1971-06-25 1974-10-22 Ampex Magnetic head
FR2165011A5 (fr) * 1971-12-14 1973-08-03 Thomson Csf
US3824685A (en) * 1972-02-14 1974-07-23 Bell & Howell Co Method of making a ferrite head
US3976735A (en) * 1974-09-30 1976-08-24 The United States Of America As Represented By The United States Energy Research And Development Administration Fabrication of boron articles
NL7414706A (nl) * 1974-11-12 1976-05-14 Philips Nv Werkwijze voor het vervaardigen van een mangaan-zink-ferrietkern, in het bijzonder voor gebruik in magneetkoppen.
US3943624A (en) * 1975-01-24 1976-03-16 U. S. Philips Corporation Method of manufacturing a magnetic head
USRE29476E (en) * 1975-04-14 1977-11-22 Ampex Corporation Method for fabricating a dielectric filled ferrite toroid for use in microwave devices
US4316923A (en) * 1975-04-14 1982-02-23 Ampex Corporation Precision dielectric filled ferrite toroid for use in microwave devices
US4007541A (en) * 1975-04-14 1977-02-15 Ampex Corporation Method for fabricating a dielectric filled ferrite toroid for use in microwave devices
DE2633597C2 (de) * 1976-07-27 1983-01-13 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von nadel- bis prismenförmigen ferrimagnetischen Eisenoxidpigmenten zur magnetischen Signalaufzeichnung
DE2641319A1 (de) * 1976-09-14 1978-03-16 Siemens Ag Ferritkern sowie verfahren zu seiner herstellung
SE424054B (sv) * 1979-03-01 1982-06-28 Perssons Brdr Sett och anordning for kalibrering av ett betongforemal
US4246128A (en) * 1979-08-08 1981-01-20 Bell Telephone Laboratories, Incorporated Method of making MnZn ferrites
JPS6047240B2 (ja) * 1980-05-16 1985-10-21 ソニー株式会社 フエライト単結晶
NL8200174A (nl) * 1982-01-19 1983-08-16 Philips Nv Magneetkop van zink-ferro-ferriet.
US4435511A (en) 1982-09-13 1984-03-06 Owens-Illinois, Inc. Glasses suitable for sealing ferrites
JPS60138708A (ja) * 1983-12-27 1985-07-23 Ngk Insulators Ltd 磁気ヘッド用コアの製造法
US4552710A (en) * 1984-01-03 1985-11-12 International Business Machines Corporation Process of hot isostatic pressing of ferrite material
GB2241919B (en) * 1990-03-12 1993-06-02 Marconi Electronic Devices Method of manufacture
DE69201579T2 (de) * 1991-03-15 1995-11-02 Sony Corp Polykristalline Ferrite.
EP1030318A4 (fr) * 1998-09-07 2006-03-22 Tdk Corp Ferrite de manganese-zinc et procede de production
JP2000246512A (ja) * 1998-12-28 2000-09-12 Ngk Spark Plug Co Ltd ダイヤモンド類被覆切削工具
US7581859B2 (en) * 2005-09-14 2009-09-01 Donnelly Corp. Display device for exterior rearview mirror

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433803A1 (fr) * 1978-07-24 1980-03-14 Magnetic Peripherals Inc Noyau de transducteur magnetique et son procede de fabrication

Also Published As

Publication number Publication date
NL6702239A (fr) 1968-08-15
DE1646728A1 (de) 1972-04-27
DE1646728B2 (de) 1975-05-28
US3557266A (en) 1971-01-19
GB1144285A (en) 1969-03-05
US3843541A (en) 1974-10-22

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