SE7409316L - - Google Patents

Info

Publication number
SE7409316L
SE7409316L SE7409316A SE7409316A SE7409316L SE 7409316 L SE7409316 L SE 7409316L SE 7409316 A SE7409316 A SE 7409316A SE 7409316 A SE7409316 A SE 7409316A SE 7409316 L SE7409316 L SE 7409316L
Authority
SE
Sweden
Prior art keywords
magnetic
erase
core
middle layer
outer layers
Prior art date
Application number
SE7409316A
Other languages
English (en)
Other versions
SE400402B (sv
Inventor
W W Childers
K H Elser
P J Peterson
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of SE7409316L publication Critical patent/SE7409316L/xx
Publication of SE400402B publication Critical patent/SE400402B/xx

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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/03—Biasing
    • 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
    • G11B5/1272—Assembling or shaping of elements
    • 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
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • 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
    • Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic
    • Y10T29/49057—Using glass bonding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
SE7409316A 1973-08-10 1974-07-17 Magnethuvud SE400402B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00387564A US3846840A (en) 1973-08-10 1973-08-10 Read/write and longitudinal edge erase head assembly having multiple similarly shaped layers

Publications (2)

Publication Number Publication Date
SE7409316L true SE7409316L (ja) 1975-02-11
SE400402B SE400402B (sv) 1978-03-20

Family

ID=23530425

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7409316A SE400402B (sv) 1973-08-10 1974-07-17 Magnethuvud

Country Status (10)

Country Link
US (1) US3846840A (ja)
JP (1) JPS5331763B2 (ja)
BE (1) BE818701A (ja)
CA (1) CA1031861A (ja)
DE (1) DE2437094C3 (ja)
FR (1) FR2240495B1 (ja)
GB (1) GB1422509A (ja)
IT (1) IT1015220B (ja)
NL (1) NL7410455A (ja)
SE (1) SE400402B (ja)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5118519A (ja) * 1974-08-06 1976-02-14 Matsushita Electric Ind Co Ltd Jikihetsudosochi
US4115827A (en) * 1975-09-22 1978-09-19 Ampex Corporation Magnetic transducer for narrow track recording and playback
US4058846A (en) * 1976-06-21 1977-11-15 International Business Machines Corporation Grounded transducer for magnetic record disks
US4110804A (en) * 1977-07-21 1978-08-29 International Business Machines Corporation Read/write and tunnel erase magnetic head assembly
NL7803231A (nl) * 1978-03-28 1979-10-02 Philips Nv Magnetische wiskop.
US4300179A (en) * 1979-09-04 1981-11-10 Minnesota Mining And Manufacturing Co. Composite magnetic head with multitrack support structure
US4276574A (en) * 1979-12-06 1981-06-30 International Business Machines Corporation Read/write and tunnel erase magnetic head assembly
JPS56156920A (en) * 1980-04-30 1981-12-03 Toshiba Corp Composite magnetic head and its production
JPS5769524A (en) * 1980-10-17 1982-04-28 Ricoh Co Ltd Magnetic head
JPS57120309A (en) * 1981-01-19 1982-07-27 Canon Inc Manufacture of magnetic core
US4368548A (en) * 1981-01-26 1983-01-18 Glass Henry P Nestable undercut bedpan
JPS57181424A (en) * 1981-04-30 1982-11-08 Hitachi Metals Ltd Magnetic head device
JPS5965922A (ja) * 1982-10-07 1984-04-14 Sumitomo Special Metals Co Ltd 磁気ヘツド組立体
EP0110513A3 (en) * 1982-10-19 1985-09-18 EASTMAN KODAK COMPANY (a New Jersey corporation) Common reluctance path multi-gap magnetic transducer
JPS59185015A (ja) * 1983-04-04 1984-10-20 Hitachi Ltd 磁気ヘツドおよびその製造方法
JPS60226455A (ja) * 1984-04-19 1985-11-11 日立金属株式会社 磁気ヘツド用非磁性セラミツクス
DE3586990T2 (de) * 1984-10-05 1993-04-29 Olympus Optical Co Kombinierter magnetkopf.
JPS61196412A (ja) * 1985-02-27 1986-08-30 Mitsubishi Electric Corp 磁気ヘツドとその製造方法
JPS61227209A (ja) * 1985-03-30 1986-10-09 Toshiba Corp 磁気ヘツド
US4686596A (en) * 1985-06-27 1987-08-11 Minnesota Mining And Manufacturing Company Recording head core yoke and method of manufacture
US4750071A (en) * 1985-08-28 1988-06-07 Canon Denshi Kabushiki Kaisha Magnetic head assembly including a pair of heads disposed in the vicinity of each other
JPH0249207A (ja) * 1988-08-09 1990-02-19 Nec Corp 磁気ヘッド
US20080074227A1 (en) * 2006-09-21 2008-03-27 Ford Global Technologies, Llc Inductor topologies with substantial common-mode and differential-mode inductance

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557445A (en) * 1968-01-02 1971-01-26 Honeywell Inc Method of fabricating slant cores
NL157442B (nl) * 1968-08-22 1978-07-17 Philips Nv Werkwijze voor het vervaardigen van een poolschoeneenheid voor een magneetkop, alsmede poolschoeneenheid vervaardigd volgens deze werkwijze.

Also Published As

Publication number Publication date
BE818701A (fr) 1974-12-02
IT1015220B (it) 1977-05-10
JPS5331763B2 (ja) 1978-09-05
FR2240495B1 (ja) 1976-06-25
DE2437094B2 (ja) 1979-07-12
FR2240495A1 (ja) 1975-03-07
DE2437094A1 (de) 1975-03-20
US3846840A (en) 1974-11-05
JPS5040118A (ja) 1975-04-12
SE400402B (sv) 1978-03-20
GB1422509A (en) 1976-01-28
NL7410455A (nl) 1975-02-12
DE2437094C3 (de) 1980-03-06
CA1031861A (en) 1978-05-23

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