IT1064228B - Apparecchiatura per la cancellazione di nastri magnetici registrati - Google Patents

Apparecchiatura per la cancellazione di nastri magnetici registrati

Info

Publication number
IT1064228B
IT1064228B IT22172/76A IT2217276A IT1064228B IT 1064228 B IT1064228 B IT 1064228B IT 22172/76 A IT22172/76 A IT 22172/76A IT 2217276 A IT2217276 A IT 2217276A IT 1064228 B IT1064228 B IT 1064228B
Authority
IT
Italy
Prior art keywords
cancellation
magnetic tapes
registered magnetic
registered
tapes
Prior art date
Application number
IT22172/76A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT1064228B publication Critical patent/IT1064228B/it

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
    • G11B5/024—Erasing
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
IT22172/76A 1975-06-06 1976-04-12 Apparecchiatura per la cancellazione di nastri magnetici registrati IT1064228B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/584,546 US4005482A (en) 1975-06-06 1975-06-06 Asymmetric erase across a rotary transformer to a rotating magnetic head

Publications (1)

Publication Number Publication Date
IT1064228B true IT1064228B (it) 1985-02-18

Family

ID=24337770

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22172/76A IT1064228B (it) 1975-06-06 1976-04-12 Apparecchiatura per la cancellazione di nastri magnetici registrati

Country Status (8)

Country Link
US (1) US4005482A (it)
JP (1) JPS51151112A (it)
CA (1) CA1062803A (it)
DE (1) DE2624833C2 (it)
FR (1) FR2313737A1 (it)
GB (1) GB1492152A (it)
IT (1) IT1064228B (it)
NL (1) NL7604117A (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4717975A (en) * 1984-02-14 1988-01-05 Canon Kabushiki Kaisha Erasing device
JPH061565B2 (ja) * 1984-02-29 1994-01-05 シャープ株式会社 ビデオテ−プレコ−ダ
US4851936A (en) * 1986-08-15 1989-07-25 Fuji Photo Film Co., Ltd. Erasing method for erasing information corrected on a magnetic recording medium
JP2021026785A (ja) 2019-08-01 2021-02-22 株式会社東芝 磁気ディスク装置及びライト処理方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276032A (en) * 1964-09-17 1966-09-27 Ibm Oscillator driving a resonant circuit with a square wave and having negative feedback
US3504116A (en) * 1966-02-25 1970-03-31 Akai Electric Magnetic recording system with a disabled bias oscillator during the vertical synchronization interval
US3610838A (en) * 1968-03-11 1971-10-05 Sony Corp Erasing apparatus for magnetic memory discs using two dc heads
US3723668A (en) * 1970-03-27 1973-03-27 Ampex Method of erasing signals from magnetic discs using dc pulses which persist for one disc revolution
AT318720B (de) * 1972-12-28 1974-11-11 Philips Nv Aufzeichnungs- und gegebenenfalls Wiedergabegerät
US3852812A (en) * 1973-07-25 1974-12-03 Potter Instrument Co Inc Symmetrical direct current tunnel erasing
US3900894A (en) * 1974-10-31 1975-08-19 Ibm Write-erase circuits for rotating head digital magnetic recorders

Also Published As

Publication number Publication date
DE2624833C2 (de) 1983-02-24
FR2313737B1 (it) 1978-05-05
FR2313737A1 (fr) 1976-12-31
CA1062803A (en) 1979-09-18
US4005482A (en) 1977-01-25
DE2624833A1 (de) 1976-12-16
GB1492152A (en) 1977-11-16
JPS574002B2 (it) 1982-01-23
JPS51151112A (en) 1976-12-25
NL7604117A (nl) 1976-12-08

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