JPS57162116A - Compound magnetic head and its manufacture - Google Patents

Compound magnetic head and its manufacture

Info

Publication number
JPS57162116A
JPS57162116A JP4550181A JP4550181A JPS57162116A JP S57162116 A JPS57162116 A JP S57162116A JP 4550181 A JP4550181 A JP 4550181A JP 4550181 A JP4550181 A JP 4550181A JP S57162116 A JPS57162116 A JP S57162116A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic material
metallic
permeability
ferrite
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
JP4550181A
Other languages
Japanese (ja)
Inventor
Takayuki Kumasaka
Hideo Fujiwara
Moichi Otomo
Takeo Yamashita
Sanehiro Kudo
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
Original Assignee
Hitachi 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 filed Critical Hitachi Ltd
Priority to JP4550181A priority Critical patent/JPS57162116A/en
Publication of JPS57162116A publication Critical patent/JPS57162116A/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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features

Abstract

PURPOSE:To make saturation hard to occur during recording, to increase reproduction efficiency, and to improve wear resistance by usin a high-magnetic- permeability magnetic material such as ferrite and a metallic magnetic material skillfully in combination. CONSTITUTION:The circumferential part of a magnetic head operating gap 11 is composed of a magnetic body 10 which is made of a metallic magnetic material or an amorphous alloy magnetic material and has high magnetic permeability and high saturated magnetic flux density, and part except the part of the metallic material or amorphous alloy magnetic material is formed of a manetic body 12, such as Mn-Zn ferrite, having high magnetic permeability. A cut groove 13 is formed for track-width determination near the operating gap to have necessary track width tw, and is charged with a nonmagnetic material such as glass.
JP4550181A 1981-03-30 1981-03-30 Compound magnetic head and its manufacture Pending JPS57162116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4550181A JPS57162116A (en) 1981-03-30 1981-03-30 Compound magnetic head and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4550181A JPS57162116A (en) 1981-03-30 1981-03-30 Compound magnetic head and its manufacture

Publications (1)

Publication Number Publication Date
JPS57162116A true JPS57162116A (en) 1982-10-05

Family

ID=12721146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4550181A Pending JPS57162116A (en) 1981-03-30 1981-03-30 Compound magnetic head and its manufacture

Country Status (1)

Country Link
JP (1) JPS57162116A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171017A (en) * 1983-03-18 1984-09-27 Hitachi Ltd Manufacture of magnetic head
JPS59193235A (en) * 1983-04-15 1984-11-01 Hitachi Ltd Co-nb-zr type amorphous magnetic alloy and magnetic head using the same
EP0159039A2 (en) * 1984-04-20 1985-10-23 Hitachi, Ltd. Magnetic recording and reproducing system with composite magnetic head
US4631613A (en) * 1984-04-16 1986-12-23 Eastman Kodak Company Thin film head having improved saturation magnetization

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171017A (en) * 1983-03-18 1984-09-27 Hitachi Ltd Manufacture of magnetic head
JPH0468682B2 (en) * 1983-03-18 1992-11-04 Hitachi Ltd
JPS59193235A (en) * 1983-04-15 1984-11-01 Hitachi Ltd Co-nb-zr type amorphous magnetic alloy and magnetic head using the same
JPH0536496B2 (en) * 1983-04-15 1993-05-31 Hitachi Ltd
US4631613A (en) * 1984-04-16 1986-12-23 Eastman Kodak Company Thin film head having improved saturation magnetization
EP0159039A2 (en) * 1984-04-20 1985-10-23 Hitachi, Ltd. Magnetic recording and reproducing system with composite magnetic head

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