IT1166458B - Metodo e dispositivo per collaudare unita per il trattamento di dische magnetici - Google Patents

Metodo e dispositivo per collaudare unita per il trattamento di dische magnetici

Info

Publication number
IT1166458B
IT1166458B IT67377/80A IT6737780A IT1166458B IT 1166458 B IT1166458 B IT 1166458B IT 67377/80 A IT67377/80 A IT 67377/80A IT 6737780 A IT6737780 A IT 6737780A IT 1166458 B IT1166458 B IT 1166458B
Authority
IT
Italy
Prior art keywords
treatment
test unit
magnetic discs
discs
magnetic
Prior art date
Application number
IT67377/80A
Other languages
English (en)
Other versions
IT8067377A0 (it
Inventor
Alberto Monti
Original Assignee
Olivetti Tecnost Spa
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 Olivetti Tecnost Spa filed Critical Olivetti Tecnost Spa
Priority to IT67377/80A priority Critical patent/IT1166458B/it
Publication of IT8067377A0 publication Critical patent/IT8067377A0/it
Priority to US06/242,136 priority patent/US4458275A/en
Priority to DE8181301012T priority patent/DE3164266D1/de
Priority to EP81301012A priority patent/EP0035915B1/en
Application granted granted Critical
Publication of IT1166458B publication Critical patent/IT1166458B/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
    • G11B5/48—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
    • G11B5/58—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 provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation
IT67377/80A 1980-03-11 1980-03-11 Metodo e dispositivo per collaudare unita per il trattamento di dische magnetici IT1166458B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT67377/80A IT1166458B (it) 1980-03-11 1980-03-11 Metodo e dispositivo per collaudare unita per il trattamento di dische magnetici
US06/242,136 US4458275A (en) 1980-03-11 1981-03-09 Method and device for testing units for processing magnetic disks
DE8181301012T DE3164266D1 (en) 1980-03-11 1981-03-11 Method and device for testing units for processing magnetic disks, modified disk therefor and device for recording that disk
EP81301012A EP0035915B1 (en) 1980-03-11 1981-03-11 Method and device for testing units for processing magnetic disks, modified disk therefor and device for recording that disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67377/80A IT1166458B (it) 1980-03-11 1980-03-11 Metodo e dispositivo per collaudare unita per il trattamento di dische magnetici

Publications (2)

Publication Number Publication Date
IT8067377A0 IT8067377A0 (it) 1980-03-11
IT1166458B true IT1166458B (it) 1987-05-06

Family

ID=11301884

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67377/80A IT1166458B (it) 1980-03-11 1980-03-11 Metodo e dispositivo per collaudare unita per il trattamento di dische magnetici

Country Status (4)

Country Link
US (1) US4458275A (it)
EP (1) EP0035915B1 (it)
DE (1) DE3164266D1 (it)
IT (1) IT1166458B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513333A (en) * 1982-02-24 1985-04-23 Dymek Corporation Diagnostic recording
US4513331A (en) * 1982-10-12 1985-04-23 Dysan Corporation Method and apparatus for disk drive alignment
US4562494A (en) * 1983-04-07 1985-12-31 Verbatim Corporation Disk drive alignment analyzer
DE3418526A1 (de) * 1984-05-18 1985-11-21 Basf Ag, 6700 Ludwigshafen Verfahren und anordnung zur fehlersignalermittlung in einem magnetplattenspeicher und testmagnetplatte dafuer
US4608618A (en) * 1984-10-25 1986-08-26 Verbatim Corporation Digital alignment diagnostic disk
US4992893A (en) * 1986-02-19 1991-02-12 Hitachi, Ltd. Alignment disk for magnetic disk driving apparatus and method and apparatus for verifying tracking error of the magnetic disk driving apparatus
IE60167B1 (en) * 1987-06-10 1994-06-15 Benares Limited Method and apparatus for testing characteristics of a flop disc and floppy disc drive
US5383070A (en) * 1990-11-21 1995-01-17 Bond; Charles R. Method and device for measuring disk drive alignment
US5936789A (en) * 1996-07-30 1999-08-10 Hitachi Electronics Engineering Co., Ltd. Off-track tester for testing MR head and method of testing the same
US7573259B1 (en) * 2008-04-15 2009-08-11 Globe Motors, Inc. Multi-track sense magnet with reduced cross-talk

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497484B1 (it) * 1968-04-30 1974-02-20
US3641278A (en) * 1968-05-29 1972-02-08 Victor Company Of Japan Magnetic disc recording and reproducing time indicator
US3742470A (en) * 1971-12-30 1973-06-26 Information Storage Systems Memory disc pack drive having accurate read/write head positioning
BG18369A1 (it) * 1973-01-17 1974-10-25
US4084201A (en) * 1975-12-02 1978-04-11 Basf Aktiengesellschaft Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control
US4164764A (en) * 1977-07-11 1979-08-14 Pericomp Corporation Magnetic head position reference system
JPS5562565A (en) * 1978-10-30 1980-05-12 Hitachi Ltd Positional slippage detection method of magnetic head

Also Published As

Publication number Publication date
DE3164266D1 (en) 1984-07-26
IT8067377A0 (it) 1980-03-11
EP0035915B1 (en) 1984-06-20
US4458275A (en) 1984-07-03
EP0035915A1 (en) 1981-09-16

Similar Documents

Publication Publication Date Title
IT1055166B (it) Metodo e dispositivo per il dosaggio di anticoagulante
JPS5436092A (en) Method of and device for purifying liquid medium
JPS54116859A (en) Method of and device for identifying record
IT1148234B (it) Metodo di saggio biologico
JPS56119853A (en) Specimen testing method and device
JPS5418303A (en) Method of reproducing halfftone and its device
JPS5550162A (en) Method and device for testing agglutination of platelets
BE887806A (fr) Appareil et procede de photometrie
JPS5372639A (en) Method of fixing specimen and fixing device
PL206867A1 (pl) Sposob ciaglego wytwarzania plyt wiorowych i urzadzenie do ciaglego wytwarzania plyt wiorowych
IT1145876B (it) Metodo e dispositivo per pulire registratori riproduttori video
ES505808A0 (es) Metodo de mejorar las propiedades magneticas de las aleacio-nes magneticas
IT8112404A0 (it) Metodo e dispositivo per la cottura di pellets
JPS5417702A (en) Device for and method of reproducing sound
NO834690L (no) Fremgangsmaate og anordning for rekonsentrering av flytende absorbent
IT1139944B (it) Metodo e apparato per esami ultrasonici
IT1142050B (it) Apparecchiatura per rilevare e localizzare vibrazioni
IT8067377A0 (it) Metodo e dispositivo per collaudare unita per il trattamento di dischi magnetici
IT8348644A0 (it) Metodo e dispositivo per la provadi funzionamento di calcolatori
IT1095711B (it) Dispositivo magnetico commutabile e metodo per la sua fabbricazione
AT384485B (de) Vorrichtung zum herstellen von blaehton und blaehschiefer
IT1145127B (it) Procedimento ed apparato per il trattamento di soluzioni mediante filtrazione magnetica
IT1144421B (it) Unita per il trattamento di dischi magnetici
PL207400A1 (pl) Sposob odymiania i urzadzenie do odymiania
FR2318108A1 (fr) Procede et appareil de preparation