JPS5778613A - Thin film magnetic head and its manufacture - Google Patents

Thin film magnetic head and its manufacture

Info

Publication number
JPS5778613A
JPS5778613A JP15139380A JP15139380A JPS5778613A JP S5778613 A JPS5778613 A JP S5778613A JP 15139380 A JP15139380 A JP 15139380A JP 15139380 A JP15139380 A JP 15139380A JP S5778613 A JPS5778613 A JP S5778613A
Authority
JP
Japan
Prior art keywords
magnetic
layer
protective plate
magnetic layer
etching
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.)
Granted
Application number
JP15139380A
Other languages
Japanese (ja)
Other versions
JPS645366B2 (en
Inventor
Akira Niimi
Hirotsugu Takagi
Takeshi Sawada
Hiroshi Yoneda
Shuzo Abiko
Hiroichi Goto
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.)
Canon Inc
Canon Electronics Inc
Original Assignee
Canon Inc
Canon Electronics Inc
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 Canon Inc, Canon Electronics Inc filed Critical Canon Inc
Priority to JP15139380A priority Critical patent/JPS5778613A/en
Publication of JPS5778613A publication Critical patent/JPS5778613A/en
Publication of JPS645366B2 publication Critical patent/JPS645366B2/ja
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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • 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
    • G11B5/312—Details for reducing flux leakage between the electrical coil layers and the magnetic cores or poles or between the magnetic cores or poles
    • 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
    • G11B5/313—Disposition of layers

Landscapes

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

Abstract

PURPOSE:To reduce magnetic leakage, and to improve a magnetic conversion efficiency, by joining in one body a substrate on which a lower magnetic layer, a winding layer and other magnetic head component parts have been formed, and a protective plate on which an upper magnetic layer has been formed. CONSTITUTION:On a substrate 10 cosisting of silicon, etc., a lower magnetic layer 11 and an insulating layer 12 are formed by means of spattering and etching, etc., and also a spiral winding 13 is formed by means of vapor-deposition of a conductive material, and etching. Subsequently, an insulating layer 14 is formed, and on both end parts of this indulating layer 14, an upper magnetic layer 15 of the gap part and an upper magnetic layer 16 of the back-gap part are formed respectively. On the other hand, on a protective plate such as glass, etc., upper magnetic layers 21, 22 are formed in advance by a photoresist process. Thereafter, the substate 10 and the protective plate 17 are joined in one body through an adhesive agent, and the part of line D is ground, by which the sliding surface of a magnetic tape is formed. In this way, each comonent parts can be manufactured with a high accuracy and a distance between the upper and lower magnetic substances ca be secured sufficiently, therefore,magnetic leakage is reduced and the magnetic conversion efficiency is elevated.
JP15139380A 1980-10-30 1980-10-30 Thin film magnetic head and its manufacture Granted JPS5778613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15139380A JPS5778613A (en) 1980-10-30 1980-10-30 Thin film magnetic head and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15139380A JPS5778613A (en) 1980-10-30 1980-10-30 Thin film magnetic head and its manufacture

Publications (2)

Publication Number Publication Date
JPS5778613A true JPS5778613A (en) 1982-05-17
JPS645366B2 JPS645366B2 (en) 1989-01-30

Family

ID=15517596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15139380A Granted JPS5778613A (en) 1980-10-30 1980-10-30 Thin film magnetic head and its manufacture

Country Status (1)

Country Link
JP (1) JPS5778613A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58212616A (en) * 1982-06-03 1983-12-10 Sanyo Electric Co Ltd Magnetic head
JPS6010409A (en) * 1983-06-29 1985-01-19 Fujitsu Ltd Production of thin film magnetic head
JPS60119614A (en) * 1983-11-30 1985-06-27 Nec Kansai Ltd Manufacture of thin film magnetic head
JPS61117715A (en) * 1984-11-13 1986-06-05 Nec Corp Thin film magnetic head
JPS61284814A (en) * 1985-06-11 1986-12-15 Canon Inc thin film magnetic head
US4673999A (en) * 1983-08-29 1987-06-16 Sony Corporation Multi channel magnetic transducer head
US4755898A (en) * 1983-06-13 1988-07-05 Matsushita Electric Industrial Co., Ltd. Amorphous magnetic head
US4782416A (en) * 1984-06-04 1988-11-01 Siemens Aktiengesellschaft Magnetic head having two legs of predetermined saturation magnetization for a recording medium to be magnetized vertically
US6337783B1 (en) 1998-08-12 2002-01-08 International Business Machines Corporation Write head with multi-stitched second pole piece
US7127800B2 (en) 2001-08-31 2006-10-31 Hitachi Global Storage Technologies Netherlands, B.V. Narrow write head pole tip fabricated by sidewall processing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0359965A (en) * 1989-07-28 1991-03-14 Nippon Telegr & Teleph Corp <Ntt> Sheet type secondary battery, charger and charging device for the battery
JPH0367472A (en) * 1989-08-04 1991-03-22 Nippon Telegr & Teleph Corp <Ntt> Thin type secondary battery charger

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5184618A (en) * 1975-01-22 1976-07-24 Nippon Electric Co JIKI HETSUDO

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5184618A (en) * 1975-01-22 1976-07-24 Nippon Electric Co JIKI HETSUDO

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58212616A (en) * 1982-06-03 1983-12-10 Sanyo Electric Co Ltd Magnetic head
US4755898A (en) * 1983-06-13 1988-07-05 Matsushita Electric Industrial Co., Ltd. Amorphous magnetic head
JPS6010409A (en) * 1983-06-29 1985-01-19 Fujitsu Ltd Production of thin film magnetic head
US4673999A (en) * 1983-08-29 1987-06-16 Sony Corporation Multi channel magnetic transducer head
JPS60119614A (en) * 1983-11-30 1985-06-27 Nec Kansai Ltd Manufacture of thin film magnetic head
US4782416A (en) * 1984-06-04 1988-11-01 Siemens Aktiengesellschaft Magnetic head having two legs of predetermined saturation magnetization for a recording medium to be magnetized vertically
JPS61117715A (en) * 1984-11-13 1986-06-05 Nec Corp Thin film magnetic head
JPS61284814A (en) * 1985-06-11 1986-12-15 Canon Inc thin film magnetic head
US6337783B1 (en) 1998-08-12 2002-01-08 International Business Machines Corporation Write head with multi-stitched second pole piece
US6612017B2 (en) 1998-08-12 2003-09-02 Hitachi Global Storage Technologies Netherlands B.V. Method of making a write head with multi-stitched second pole piece
US7127800B2 (en) 2001-08-31 2006-10-31 Hitachi Global Storage Technologies Netherlands, B.V. Narrow write head pole tip fabricated by sidewall processing
US7199972B2 (en) 2001-08-31 2007-04-03 Hitachi Global Storage Technologies Netherlands, B.V. Narrow write head pole tip fabricated by sidewall processing

Also Published As

Publication number Publication date
JPS645366B2 (en) 1989-01-30

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