JPS5753819A - Composite magnetic head - Google Patents

Composite magnetic head

Info

Publication number
JPS5753819A
JPS5753819A JP12721680A JP12721680A JPS5753819A JP S5753819 A JPS5753819 A JP S5753819A JP 12721680 A JP12721680 A JP 12721680A JP 12721680 A JP12721680 A JP 12721680A JP S5753819 A JPS5753819 A JP S5753819A
Authority
JP
Japan
Prior art keywords
ferrite
magnetic head
magnetic
single crystal
polycrystals
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.)
Pending
Application number
JP12721680A
Other languages
Japanese (ja)
Inventor
Takayuki Kumasaka
Sanehiro Kudo
Hideo Fujiwara
Takeshi Kimura
Yoshihiro Shiroishi
Takeo Yamashita
Nobuo Kobayashi
Sadazou Tamura
Hajime Shinohara
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.)
Hitachi Ltd
Proterial Ltd
Original Assignee
Hitachi Ltd
Hitachi Metals 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
Application filed by Hitachi Ltd, Hitachi Metals Ltd filed Critical Hitachi Ltd
Priority to JP12721680A priority Critical patent/JPS5753819A/en
Publication of JPS5753819A publication Critical patent/JPS5753819A/en
Pending 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
    • G11B5/133—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

Landscapes

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

Abstract

PURPOSE:To obtain a magnetic head which excels particularly in the magnetic recording/reproducing performance, by adhering the Mn-Zn ferrite polycrystals at the side part of a magnetic matter of high magnetic permeability as if the Mn-Zn ferrite polycrystals hold the single crystal part of the Mn-Zn ferrite near the butted surface of the said magnetic matter. CONSTITUTION:The (110) face of at least one of two pieces of single Mn-Zn ferrite that oppose to each other via a working gap 64 at near parts 61 and 61' of the core butting of a magnetic head is set substantially parallel to the surface on with a main magnetic path is formed. At the same time, an angle of 15-40 deg. or 95-120 deg. is secured for the angle theta formed by the <100> direction existing within the (110) face and a butted surface 64 of a core. While Mn-Zn ferrite polycrystals 62 and 62' are joined to each other as if they hold the single crystal parts 61 and 61' between. Thus a composite magnetic head is obtained. At the same time, the glass having the contraction factor lower than that of the Mn-Zn ferrite in case when the glass sticking temperature is reduced down to the room temperature is melted and stuck to the single crystal Mn-Zn ferrite surface at least near the side surface of the gap 64 to complete the composite magnetic head.
JP12721680A 1980-09-16 1980-09-16 Composite magnetic head Pending JPS5753819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12721680A JPS5753819A (en) 1980-09-16 1980-09-16 Composite magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12721680A JPS5753819A (en) 1980-09-16 1980-09-16 Composite magnetic head

Publications (1)

Publication Number Publication Date
JPS5753819A true JPS5753819A (en) 1982-03-31

Family

ID=14954595

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12721680A Pending JPS5753819A (en) 1980-09-16 1980-09-16 Composite magnetic head

Country Status (1)

Country Link
JP (1) JPS5753819A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5868215A (en) * 1981-10-19 1983-04-23 Alps Electric Co Ltd Magnetic head and its manufacture
JPS60138708A (en) * 1983-12-27 1985-07-23 Ngk Insulators Ltd Magnetic head core and its manufacture
JPS60138710A (en) * 1983-12-27 1985-07-23 Ngk Insulators Ltd Magnetic head core and its manufacture
JPS63209014A (en) * 1987-02-25 1988-08-30 Sony Corp Joined magnetic head
EP0703571A3 (en) * 1994-09-21 1996-07-31 Sony Corp Magnetic head
US6660957B1 (en) 2000-05-15 2003-12-09 Mitsubishi Denki Kabushiki Kaisha Apparatus for electric discharge machining

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5868215A (en) * 1981-10-19 1983-04-23 Alps Electric Co Ltd Magnetic head and its manufacture
JPH0432443B2 (en) * 1981-10-19 1992-05-29
JPS60138708A (en) * 1983-12-27 1985-07-23 Ngk Insulators Ltd Magnetic head core and its manufacture
JPS60138710A (en) * 1983-12-27 1985-07-23 Ngk Insulators Ltd Magnetic head core and its manufacture
JPH0355884B2 (en) * 1983-12-27 1991-08-26
JPS63209014A (en) * 1987-02-25 1988-08-30 Sony Corp Joined magnetic head
EP0703571A3 (en) * 1994-09-21 1996-07-31 Sony Corp Magnetic head
US5875081A (en) * 1994-09-21 1999-02-23 Sony Corporation Magnetic head
US6660957B1 (en) 2000-05-15 2003-12-09 Mitsubishi Denki Kabushiki Kaisha Apparatus for electric discharge machining

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