IT1030640B - Testina magnetica di cancellazione - Google Patents

Testina magnetica di cancellazione

Info

Publication number
IT1030640B
IT1030640B IT7428017A IT2801774A IT1030640B IT 1030640 B IT1030640 B IT 1030640B IT 7428017 A IT7428017 A IT 7428017A IT 2801774 A IT2801774 A IT 2801774A IT 1030640 B IT1030640 B IT 1030640B
Authority
IT
Italy
Prior art keywords
erasing head
magnetic erasing
magnetic
head
erasing
Prior art date
Application number
IT7428017A
Other languages
English (en)
Original Assignee
Sony Corp
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
Priority claimed from JP11086673A external-priority patent/JPS531645B2/ja
Priority claimed from JP11504173U external-priority patent/JPS5329134Y2/ja
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of IT1030640B publication Critical patent/IT1030640B/it

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
    • 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
IT7428017A 1973-10-02 1974-10-02 Testina magnetica di cancellazione IT1030640B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11086673A JPS531645B2 (it) 1973-10-02 1973-10-02
JP11504173U JPS5329134Y2 (it) 1973-10-02 1973-10-02

Publications (1)

Publication Number Publication Date
IT1030640B true IT1030640B (it) 1979-04-10

Family

ID=26450389

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7428017A IT1030640B (it) 1973-10-02 1974-10-02 Testina magnetica di cancellazione

Country Status (7)

Country Link
US (1) US3947891A (it)
CA (1) CA1030655A (it)
DE (1) DE2446866C2 (it)
FR (1) FR2246924B1 (it)
GB (1) GB1478179A (it)
IT (1) IT1030640B (it)
NL (1) NL7413029A (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52121310A (en) * 1976-04-06 1977-10-12 Olympus Optical Co Ltd Erase head using permanent magnet and its magnetizing method
JPS5577025A (en) * 1978-12-01 1980-06-10 Tdk Corp Erasing head
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
US5959812A (en) * 1997-07-25 1999-09-28 Imation Corp. Fringe field compensation system for multi-track servo recording head
JP2010277624A (ja) * 2009-05-26 2010-12-09 Toshiba Storage Device Corp 磁気記録装置、ヘッド評価装置、スピンスタンド装置およびライトポールイレーズ評価方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546927A (en) * 1947-09-13 1951-03-27 Indiana Steel Products Co Polarizing head for magnetic recorders
NL78443C (it) * 1950-01-20
US2784259A (en) * 1952-12-17 1957-03-05 Armour Res Found Recording and erase head for magnetic recorders
US2908768A (en) * 1955-04-13 1959-10-13 Steinegger Giovanni Device for demagnetizing the magnetized wire of a sound recording and reproducing apparatus
JPS549044B1 (it) * 1970-05-21 1979-04-20

Also Published As

Publication number Publication date
FR2246924A1 (it) 1975-05-02
NL7413029A (nl) 1975-04-04
US3947891A (en) 1976-03-30
DE2446866C2 (de) 1985-11-07
CA1030655A (en) 1978-05-02
FR2246924B1 (it) 1978-06-09
GB1478179A (en) 1977-06-29
DE2446866A1 (de) 1975-04-10

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