FR1213217A - Tête magnétique multiple - Google Patents

Tête magnétique multiple

Info

Publication number
FR1213217A
FR1213217A FR1213217DA FR1213217A FR 1213217 A FR1213217 A FR 1213217A FR 1213217D A FR1213217D A FR 1213217DA FR 1213217 A FR1213217 A FR 1213217A
Authority
FR
France
Prior art keywords
magnetic head
multiple magnetic
head
magnetic
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
Other languages
English (en)
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.)
Compagnie des Machines Bull SA
Original Assignee
Compagnie des Machines Bull SA
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 Compagnie des Machines Bull SA filed Critical Compagnie des Machines Bull SA
Application granted granted Critical
Publication of FR1213217A publication Critical patent/FR1213217A/fr
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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G06K7/084—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state
    • 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)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Magnetic Heads (AREA)
FR1213217D 1959-01-06 1958-01-06 Tête magnétique multiple Expired FR1213217A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR783351 1959-01-06

Publications (1)

Publication Number Publication Date
FR1213217A true FR1213217A (fr) 1960-03-29

Family

ID=8709907

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1213217D Expired FR1213217A (fr) 1959-01-06 1958-01-06 Tête magnétique multiple

Country Status (4)

Country Link
US (1) US3166740A (fr)
DE (1) DE1220893B (fr)
FR (1) FR1213217A (fr)
GB (1) GB893805A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237280A (en) * 1959-09-05 1966-03-01 Philips Corp Method of manufacturing magnetic heads

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487391A (en) * 1967-02-03 1969-12-30 Joachim H Todt Magnetic transducing head for photocopy machine
NL7304528A (fr) * 1973-03-31 1974-10-02
US4819107A (en) * 1984-08-29 1989-04-04 Irwin Magnetic Systems, Inc. Magnetic transducer head structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784259A (en) * 1952-12-17 1957-03-05 Armour Res Found Recording and erase head for magnetic recorders
US2689274A (en) * 1953-04-30 1954-09-14 Rca Corp Recording on magnetic tape
GB802481A (en) * 1954-02-23 1958-10-08 Paul Allen Marriott Improvements relating to magnetic sound heads
US2807676A (en) * 1954-07-16 1957-09-24 Rca Corp Magnetic head assemblies
US2732275A (en) * 1954-12-28 1956-01-24 Magnetic recording head
US2840643A (en) * 1955-04-04 1958-06-24 Hughes Aircraft Co Integral transformer electromagnetic transducer
US2872530A (en) * 1955-06-02 1959-02-03 Rca Corp Magnetic record transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237280A (en) * 1959-09-05 1966-03-01 Philips Corp Method of manufacturing magnetic heads

Also Published As

Publication number Publication date
GB893805A (en) 1962-04-11
DE1220893B (de) 1966-07-14
US3166740A (en) 1965-01-19

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