GB2153581B - Magnetic transducer heads - Google Patents

Magnetic transducer heads

Info

Publication number
GB2153581B
GB2153581B GB08432443A GB8432443A GB2153581B GB 2153581 B GB2153581 B GB 2153581B GB 08432443 A GB08432443 A GB 08432443A GB 8432443 A GB8432443 A GB 8432443A GB 2153581 B GB2153581 B GB 2153581B
Authority
GB
United Kingdom
Prior art keywords
magnetic transducer
transducer heads
heads
magnetic
transducer
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
GB08432443A
Other versions
GB2153581A (en
GB8432443D0 (en
Inventor
Tomio Kobayashi
Heikichi Sato
Makoto Kubota
Shoichi Kano
Tatsuo Kumura
Kazushi Yamauchi
Yoshimi Takahashi
Junichi Saito
Seiki Konno
Osamu Maniwa
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.)
Sony Corp
Original Assignee
Sony Corp
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 JP58250988A external-priority patent/JPS60229210A/en
Priority claimed from JP59078242A external-priority patent/JPS60223012A/en
Priority claimed from JP9975184A external-priority patent/JPS60243810A/en
Application filed by Sony Corp filed Critical Sony Corp
Publication of GB8432443D0 publication Critical patent/GB8432443D0/en
Publication of GB2153581A publication Critical patent/GB2153581A/en
Application granted granted Critical
Publication of GB2153581B publication Critical patent/GB2153581B/en
Expired 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
    • 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
    • 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
    • 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
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
GB08432443A 1983-12-30 1984-12-21 Magnetic transducer heads Expired GB2153581B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP58250988A JPS60229210A (en) 1983-12-30 1983-12-30 Magnetic head
JP59078242A JPS60223012A (en) 1984-04-18 1984-04-18 Magnetic head
JP9975184A JPS60243810A (en) 1984-05-18 1984-05-18 Magnetic head

Publications (3)

Publication Number Publication Date
GB8432443D0 GB8432443D0 (en) 1985-02-06
GB2153581A GB2153581A (en) 1985-08-21
GB2153581B true GB2153581B (en) 1988-05-25

Family

ID=27302650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08432443A Expired GB2153581B (en) 1983-12-30 1984-12-21 Magnetic transducer heads

Country Status (8)

Country Link
AT (1) AT393566B (en)
AU (1) AU582736B2 (en)
CA (1) CA1236212A (en)
DE (1) DE3447700A1 (en)
FR (1) FR2558000B1 (en)
GB (1) GB2153581B (en)
IT (1) IT1182707B (en)
NL (1) NL194772C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654527B2 (en) * 1984-11-26 1994-07-20 ソニー株式会社 Magnetic head
DE3634305A1 (en) * 1985-10-09 1987-04-16 Canon Kk MAGNETIC HEAD
DE3687217D1 (en) * 1985-11-29 1993-01-14 Grundig Emv METHOD FOR PRODUCING MAGNETIC HEADS.
JPH0654528B2 (en) * 1986-04-23 1994-07-20 株式会社日立製作所 Magnetic head
JPS62266712A (en) * 1986-05-14 1987-11-19 Mitsubishi Electric Corp Composite magnetic head
DE3769844D1 (en) * 1986-05-21 1991-06-13 Philips Nv MAGNETIC HEAD WITH CLOTHED CORE SURFACES.
JPS6370912A (en) * 1986-09-12 1988-03-31 Hitachi Ltd Glass for joining magnetic head gap
JPS63146202A (en) * 1986-12-09 1988-06-18 Canon Electronics Inc Magnetic head and its production
JP2513205B2 (en) * 1987-02-04 1996-07-03 ソニー株式会社 Composite magnetic head
GB2268309B (en) * 1992-06-16 1996-09-11 Samsung Electro Mech Composite magnetic head

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL263324A (en) * 1961-04-07
US4219855A (en) * 1978-12-21 1980-08-26 International Business Machines Corporation Thin film magnetic head
JPS56124111A (en) * 1980-03-06 1981-09-29 Matsushita Electric Ind Co Ltd Production of magnetic head
JPS56124112A (en) * 1980-03-06 1981-09-29 Matsushita Electric Ind Co Ltd Magnetic head
JPS56169214A (en) * 1980-06-02 1981-12-25 Nippon Hoso Kyokai <Nhk> Magnetic head
KR850001445B1 (en) * 1981-03-10 1985-10-05 이우에 가오루 Magnetic head
JPS58155513A (en) * 1982-03-10 1983-09-16 Hitachi Ltd Composite magnetic head and its manufacture
JPS58175122A (en) * 1982-04-07 1983-10-14 Hitachi Ltd Compound magnetic head and its production
JPS598120A (en) * 1982-07-05 1984-01-17 Sharp Corp Production of magnetic head
JPS59207415A (en) * 1983-05-11 1984-11-24 Hitachi Ltd Compound magnetic head and its preparation

Also Published As

Publication number Publication date
NL194772C (en) 2003-02-04
NL194772B (en) 2002-10-01
AT393566B (en) 1991-11-11
GB2153581A (en) 1985-08-21
FR2558000B1 (en) 1994-02-25
DE3447700A1 (en) 1985-07-25
DE3447700C2 (en) 1993-02-18
GB8432443D0 (en) 1985-02-06
FR2558000A1 (en) 1985-07-12
AU3707484A (en) 1985-07-04
NL8403971A (en) 1985-07-16
CA1236212A (en) 1988-05-03
IT8449363A1 (en) 1986-06-27
IT1182707B (en) 1987-10-05
IT8449363A0 (en) 1984-12-27
ATA412784A (en) 1991-04-15
AU582736B2 (en) 1989-04-13

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20041220