FR2093778A5 - - Google Patents

Info

Publication number
FR2093778A5
FR2093778A5 FR7119128A FR7119128A FR2093778A5 FR 2093778 A5 FR2093778 A5 FR 2093778A5 FR 7119128 A FR7119128 A FR 7119128A FR 7119128 A FR7119128 A FR 7119128A FR 2093778 A5 FR2093778 A5 FR 2093778A5
Authority
FR
France
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
FR7119128A
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.)
Fujitsu Services Ltd
Original Assignee
Fujitsu Services 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 Fujitsu Services Ltd filed Critical Fujitsu Services Ltd
Application granted granted Critical
Publication of FR2093778A5 publication Critical patent/FR2093778A5/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • 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
    • G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
FR7119128A 1970-05-26 1971-05-26 Expired FR2093778A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25231/70A GB1291615A (en) 1970-05-26 1970-05-26 Improvements in or relating to magnetic recording apparatus

Publications (1)

Publication Number Publication Date
FR2093778A5 true FR2093778A5 (fr) 1972-01-28

Family

ID=10224329

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7119128A Expired FR2093778A5 (fr) 1970-05-26 1971-05-26

Country Status (4)

Country Link
US (1) US3725607A (fr)
FR (1) FR2093778A5 (fr)
GB (1) GB1291615A (fr)
ZA (1) ZA712603B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5953482A (en) * 1995-10-18 1999-09-14 Matsushita Electric Industrial Co., Ltd. Magnetic recording/reproducing apparatus with the recording/reproducing heads preceding the erasing heads
JP3443982B2 (ja) * 1994-10-20 2003-09-08 松下電器産業株式会社 磁気記録再生装置
US5959812A (en) * 1997-07-25 1999-09-28 Imation Corp. Fringe field compensation system for multi-track servo recording head

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE884871C (de) * 1950-06-25 1953-07-30 Ursula Kuerzeder Anordnung zur magnetischen Aufzeichnung mechanischer, insbesondere akustischer Schwingungen
GB943558A (en) * 1960-05-13 1963-12-04 Sperry Rand Corp Magnetic recorder head assembly
US3156919A (en) * 1960-12-30 1964-11-10 Ibm Electromagnetic transducer head
FR1405084A (fr) * 1963-09-13 1965-07-02 Ampex Structure de tête magnétique
GB1134319A (en) * 1966-09-15 1968-11-20 Philips Electronic Associated Heads for magnetic-recording apparatus
FR1577046A (fr) * 1967-08-24 1969-08-01
FR2009467A1 (fr) * 1968-05-28 1970-02-06 Bogen Wolfgang

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987582A (en) * 1955-08-12 1961-06-06 Sperry Rand Corp Multichannel magnetic erasing heads
US3155949A (en) * 1961-11-24 1964-11-03 Ibm Tunnel erase magnetic transducer
US3480935A (en) * 1966-09-07 1969-11-25 Honeywell Inc Electromagnetic transducer having a variable gap width for recording and checking said recording
NL156528B (nl) * 1966-09-15 1978-04-17 Philips Nv Magnetische schrijf-lees-wiskop.
AT274416B (de) * 1967-02-28 1969-09-25 Philips Nv Permanentmagnetische Löscheinrichtung für magnetisierbare Aufzeichnungsträger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE884871C (de) * 1950-06-25 1953-07-30 Ursula Kuerzeder Anordnung zur magnetischen Aufzeichnung mechanischer, insbesondere akustischer Schwingungen
GB943558A (en) * 1960-05-13 1963-12-04 Sperry Rand Corp Magnetic recorder head assembly
US3156919A (en) * 1960-12-30 1964-11-10 Ibm Electromagnetic transducer head
FR1405084A (fr) * 1963-09-13 1965-07-02 Ampex Structure de tête magnétique
GB1134319A (en) * 1966-09-15 1968-11-20 Philips Electronic Associated Heads for magnetic-recording apparatus
FR1577046A (fr) * 1967-08-24 1969-08-01
FR2009467A1 (fr) * 1968-05-28 1970-02-06 Bogen Wolfgang

Also Published As

Publication number Publication date
GB1291615A (en) 1972-10-04
US3725607A (en) 1973-04-03
ZA712603B (en) 1972-01-26

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Legal Events

Date Code Title Description
ST Notification of lapse