GB1248433A - Improvements in gapless magnetic transducers and apparatus utilizing the same - Google Patents

Improvements in gapless magnetic transducers and apparatus utilizing the same

Info

Publication number
GB1248433A
GB1248433A GB4781068A GB4781068A GB1248433A GB 1248433 A GB1248433 A GB 1248433A GB 4781068 A GB4781068 A GB 4781068A GB 4781068 A GB4781068 A GB 4781068A GB 1248433 A GB1248433 A GB 1248433A
Authority
GB
United Kingdom
Prior art keywords
winding
film
substrate
magnetic
field
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
GB4781068A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1248433A publication Critical patent/GB1248433A/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
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/332—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using thin films
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/06—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using magneto-optical elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

1,248,433. Magnetic transducers. GENERAL ELECTRIC CO. 9 Oct., 1968 [8 Nov., 1967], No. 47810/68. Heading G5R. A gapless magnetic transducer has an anisotropic thin magnetic film 64 on a substrate 62, a read/write winding 54 wrapped around both film and substrate, and an auxiliary winding 66 also wrapped around both film and substrate so as to produce a magnetic field having no direct effect on the read/write winding. Interrogating pulses fed to the winding 66 cause wall motion or rotation of the film domains and in the presence of a recorded field 37 allow that field to be sensed by the winding 54. A variety of configurations are described (Figs. 4 to 9, not shown).
GB4781068A 1967-11-08 1968-10-09 Improvements in gapless magnetic transducers and apparatus utilizing the same Expired GB1248433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68132667A 1967-11-08 1967-11-08

Publications (1)

Publication Number Publication Date
GB1248433A true GB1248433A (en) 1971-10-06

Family

ID=24734798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4781068A Expired GB1248433A (en) 1967-11-08 1968-10-09 Improvements in gapless magnetic transducers and apparatus utilizing the same

Country Status (5)

Country Link
DE (2) DE6805536U (en)
FR (1) FR1604401A (en)
GB (1) GB1248433A (en)
NL (1) NL6815894A (en)
SE (1) SE358762B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023390A1 (en) * 1979-06-27 1981-02-04 Matsushita Electric Industrial Co., Ltd. Magnetic head arrangement
EP0031216A1 (en) * 1979-12-13 1981-07-01 Fujitsu Limited A magnetic head for a perpendicular magnetic recording system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5459915A (en) * 1977-10-20 1979-05-15 Sony Corp Method and apparatus for reading of magnetic recording signal
US4242710A (en) * 1979-01-29 1980-12-30 International Business Machines Corporation Thin film head having negative magnetostriction
FR2502375B1 (en) * 1981-03-20 1989-08-18 Cii Honeywell Bull MAGNETORESISTANT TRANSDUCER FOR READING INFORMATION AT VERY HIGH DENSITY
NL192546C (en) * 1982-07-19 1997-09-02 Nippon Telegraph & Telephone Reading head for high-density magnetic recording.
FR2549271B1 (en) * 1983-07-13 1989-05-26 Cii Honeywell Bull HIGHLY INTEGRATED MAGNETIC TRANSDUCER FOR WRITING INFORMATION ON A MAGNETIC MEDIUM

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023390A1 (en) * 1979-06-27 1981-02-04 Matsushita Electric Industrial Co., Ltd. Magnetic head arrangement
EP0031216A1 (en) * 1979-12-13 1981-07-01 Fujitsu Limited A magnetic head for a perpendicular magnetic recording system

Also Published As

Publication number Publication date
NL6815894A (en) 1969-05-12
DE6805536U (en) 1969-07-17
FR1604401A (en) 1971-11-08
SE358762B (en) 1973-08-06
DE1807184A1 (en) 1969-06-19

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