FR1266821A - Magnetic disc device for recording and restoring information - Google Patents

Magnetic disc device for recording and restoring information

Info

Publication number
FR1266821A
FR1266821A FR837721A FR837721A FR1266821A FR 1266821 A FR1266821 A FR 1266821A FR 837721 A FR837721 A FR 837721A FR 837721 A FR837721 A FR 837721A FR 1266821 A FR1266821 A FR 1266821A
Authority
FR
France
Prior art keywords
recording
magnetic disc
disc device
restoring information
restoring
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
FR837721A
Other languages
French (fr)
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 DES64696A external-priority patent/DE1098746B/en
Priority claimed from DES65038A external-priority patent/DE1098736B/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to FR837721A priority Critical patent/FR1266821A/en
Application granted granted Critical
Publication of FR1266821A publication Critical patent/FR1266821A/en
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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • G11B5/825—Disk carriers flexible discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/038—Centering or locking of a plurality of discs in a single cartridge
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • 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
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
FR837721A 1959-09-01 1960-09-01 Magnetic disc device for recording and restoring information Expired FR1266821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR837721A FR1266821A (en) 1959-09-01 1960-09-01 Magnetic disc device for recording and restoring information

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DES64696A DE1098746B (en) 1959-09-01 1959-09-01 Magnetic foil storage
DES65038A DE1098736B (en) 1959-09-22 1959-09-22 Magnetic foil storage
FR837721A FR1266821A (en) 1959-09-01 1960-09-01 Magnetic disc device for recording and restoring information

Publications (1)

Publication Number Publication Date
FR1266821A true FR1266821A (en) 1961-07-17

Family

ID=27212666

Family Applications (1)

Application Number Title Priority Date Filing Date
FR837721A Expired FR1266821A (en) 1959-09-01 1960-09-01 Magnetic disc device for recording and restoring information

Country Status (1)

Country Link
FR (1) FR1266821A (en)

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