GB1319088A - Method of manufacturing multi-element magnetic head - Google Patents

Method of manufacturing multi-element magnetic head

Info

Publication number
GB1319088A
GB1319088A GB2972470A GB2972470A GB1319088A GB 1319088 A GB1319088 A GB 1319088A GB 2972470 A GB2972470 A GB 2972470A GB 2972470 A GB2972470 A GB 2972470A GB 1319088 A GB1319088 A GB 1319088A
Authority
GB
United Kingdom
Prior art keywords
magnetic
magnetic head
june
slots
strips
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
GB2972470A
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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1319088A publication Critical patent/GB1319088A/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
    • G11B5/187—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
    • G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track

Landscapes

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

Abstract

1319088 Magnetic heads MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 18 June 1970 [23 June 1969] 29724/70 Heading G5R A multi-element magnetic head unit is constructed by joining two magnetic oxide core sections 4, 5 through a gap spacer, 6 as in Fig. 1a, removing the lower portions of the sections, and cutting a series of slots 8 extending into the spacer thereby to produce the structure shown in the upper part of Fig. 1b; shielding plates 10 with non-magnetic strips 9 are then fixed in slots 8, yokes 12 with coils 11 are joined to the oxide parts 7, and the arrangement is potted and cased, as in Fig. 1d (not shown). The assembly is then ground/lapped until the plates 10 and strips 9 are exposed and, while observing in the directions A, A<SP>1</SP>, grinding/lapping is continued until the desired reduced gap depth size has been achieved.
GB2972470A 1969-06-23 1970-06-18 Method of manufacturing multi-element magnetic head Expired GB1319088A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5046869A JPS5031818B1 (en) 1969-06-23 1969-06-23

Publications (1)

Publication Number Publication Date
GB1319088A true GB1319088A (en) 1973-05-31

Family

ID=12859702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2972470A Expired GB1319088A (en) 1969-06-23 1970-06-18 Method of manufacturing multi-element magnetic head

Country Status (6)

Country Link
JP (1) JPS5031818B1 (en)
CA (1) CA922097A (en)
DE (1) DE2030712A1 (en)
FR (1) FR2047052B1 (en)
GB (1) GB1319088A (en)
NL (1) NL7009147A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159318A (en) * 1984-05-25 1985-11-27 Alps Electric Co Ltd Floating magnetic head
TWI465330B (en) * 2010-02-02 2014-12-21 Apple Inc Cosmetic co-removal of material for electronic device surfaces

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL112519C (en) * 1959-09-05
US3353261A (en) * 1964-12-30 1967-11-21 Ibm Method of making a multitrack magnetic transducer head

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159318A (en) * 1984-05-25 1985-11-27 Alps Electric Co Ltd Floating magnetic head
TWI465330B (en) * 2010-02-02 2014-12-21 Apple Inc Cosmetic co-removal of material for electronic device surfaces
US9363905B2 (en) 2010-02-02 2016-06-07 Apple Inc. Cosmetic co-removal of material for electronic device surfaces
US10234906B2 (en) 2010-02-02 2019-03-19 Apple Inc. Cosmetic co-removal of material for electronic device surfaces
US10353436B2 (en) 2010-02-02 2019-07-16 Apple Inc. Cosmetic co-removal of material for electronic device surfaces
US11099609B2 (en) 2010-02-02 2021-08-24 Apple Inc. Cosmetic co-removal of material for electronic device surfaces

Also Published As

Publication number Publication date
FR2047052A1 (en) 1971-03-12
FR2047052B1 (en) 1973-01-12
CA922097A (en) 1973-03-06
JPS5031818B1 (en) 1975-10-15
NL7009147A (en) 1970-12-28
DE2030712A1 (en) 1971-01-14

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee