DE1938693C2 - Verfahren zur Herstellung der Polschuheinheit eines Magnetkopfes - Google Patents

Verfahren zur Herstellung der Polschuheinheit eines Magnetkopfes

Info

Publication number
DE1938693C2
DE1938693C2 DE1938693A DE1938693A DE1938693C2 DE 1938693 C2 DE1938693 C2 DE 1938693C2 DE 1938693 A DE1938693 A DE 1938693A DE 1938693 A DE1938693 A DE 1938693A DE 1938693 C2 DE1938693 C2 DE 1938693C2
Authority
DE
Germany
Prior art keywords
grooves
gap
useful
ferrite
magnetic head
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
DE1938693A
Other languages
German (de)
English (en)
Other versions
DE1938693A1 (de
Inventor
Erfinder Wird Nachtra Der
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of DE1938693A1 publication Critical patent/DE1938693A1/de
Application granted granted Critical
Publication of DE1938693C2 publication Critical patent/DE1938693C2/de
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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49053—Multitrack heads having integral holding means

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
DE1938693A 1968-08-22 1969-07-30 Verfahren zur Herstellung der Polschuheinheit eines Magnetkopfes Expired DE1938693C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6811950.A NL157442B (nl) 1968-08-22 1968-08-22 Werkwijze voor het vervaardigen van een poolschoeneenheid voor een magneetkop, alsmede poolschoeneenheid vervaardigd volgens deze werkwijze.

Publications (2)

Publication Number Publication Date
DE1938693A1 DE1938693A1 (de) 1970-02-26
DE1938693C2 true DE1938693C2 (de) 1981-12-17

Family

ID=19804420

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1938693A Expired DE1938693C2 (de) 1968-08-22 1969-07-30 Verfahren zur Herstellung der Polschuheinheit eines Magnetkopfes

Country Status (7)

Country Link
US (1) US3593414A (enExample)
AT (1) AT298101B (enExample)
BE (1) BE737753A (enExample)
DE (1) DE1938693C2 (enExample)
FR (1) FR2016161A1 (enExample)
GB (1) GB1227061A (enExample)
NL (1) NL157442B (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918151A (en) * 1971-03-17 1975-11-11 Philips Corp Method of manufacturing a multiple magnetic head
NL7103549A (enExample) * 1971-03-17 1972-09-19
US3722081A (en) * 1971-03-22 1973-03-27 S Neace Method of making a multi-channel magnetic head assembly
US3750274A (en) * 1971-05-28 1973-08-07 Texas Instruments Inc Method of making glass bonded recording heads
US3862831A (en) * 1973-04-20 1975-01-28 Ibm Glass fabrication process
JPS5029019A (enExample) * 1973-07-18 1975-03-24
US3846840A (en) * 1973-08-10 1974-11-05 Ibm Read/write and longitudinal edge erase head assembly having multiple similarly shaped layers
JPS50112015A (enExample) * 1974-02-12 1975-09-03
JPS5918769B2 (ja) * 1974-05-31 1984-04-28 ティーディーケイ株式会社 磁気ヘツドおよびその製造法
US4372036A (en) * 1974-10-29 1983-02-08 Spin Physics, Inc. Method of manufacturing a single-track video ferrite record/reproduce head
US4084199A (en) * 1976-10-26 1978-04-11 Spin Physics, Inc. High density multitrack magnetic head
US4279102A (en) * 1978-07-24 1981-07-21 Magnetic Peripherals Inc. Method of manufacturing narrow track ferrite head cores
US4425701A (en) 1980-10-17 1984-01-17 Matsushita Electric Industrial Co., Ltd. Methods of making magnetic recording heads
JPS59203210A (ja) * 1983-05-02 1984-11-17 Canon Inc 磁気コアおよびその製造方法
JP2786783B2 (ja) * 1992-07-29 1998-08-13 シャープ株式会社 複合型磁気ヘッド
US6288870B1 (en) 1998-01-13 2001-09-11 Quantum Corporation Self-aligned metal film core multi-channel recording head for tape drives
US20080068752A1 (en) * 2006-09-19 2008-03-20 International Business Machines Corporation Planar Bidirectional Tape Head With Planar Read And Write Elements
US20080068750A1 (en) * 2006-09-19 2008-03-20 International Business Machines Corporation Planar Write Module And Hybrid Planar Write-Vertical Read Bidirectional Tape Head
US7978429B2 (en) * 2006-09-19 2011-07-12 International Business Machines Corporation Low track pitch write module and bidirectional tape head
JP4807217B2 (ja) * 2006-10-18 2011-11-02 セイコーエプソン株式会社 磁気情報処理装置およびノイズ低減方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL149020B (nl) * 1965-01-14 1976-03-15 Philips Nv Werkwijze voor het vervaardigen van een poolschoeneenheid voor een magneetkop, alsmede poolschoeneenheid, vervaardigd volgens deze werkwijze.
DE1474335A1 (de) * 1965-11-12 1969-07-17 Grundig Emv Magnetkopf fuer schmale Spurbreiten,insbesondere Videokopf
US3384954A (en) * 1965-12-07 1968-05-28 Ibm Making multitrack magnetic transducer
NL6600603A (enExample) * 1966-01-18 1967-07-19

Also Published As

Publication number Publication date
NL157442B (nl) 1978-07-17
AT298101B (de) 1972-04-25
FR2016161A1 (enExample) 1970-05-08
GB1227061A (enExample) 1971-03-31
NL6811950A (enExample) 1970-02-24
US3593414A (en) 1971-07-20
BE737753A (enExample) 1970-02-20
DE1938693A1 (de) 1970-02-26

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Legal Events

Date Code Title Description
D2 Grant after examination
8328 Change in the person/name/address of the agent

Free format text: DERZEIT KEIN VERTRETER BESTELLT

8339 Ceased/non-payment of the annual fee