FR2236244A1 - - Google Patents

Info

Publication number
FR2236244A1
FR2236244A1 FR7417750A FR7417750A FR2236244A1 FR 2236244 A1 FR2236244 A1 FR 2236244A1 FR 7417750 A FR7417750 A FR 7417750A FR 7417750 A FR7417750 A FR 7417750A FR 2236244 A1 FR2236244 A1 FR 2236244A1
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.)
Granted
Application number
FR7417750A
Other languages
French (fr)
Other versions
FR2236244B1 (OSRAM
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 US00375989A external-priority patent/US3838462A/en
Priority claimed from US00375986A external-priority patent/US3810243A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2236244A1 publication Critical patent/FR2236244A1/fr
Application granted granted Critical
Publication of FR2236244B1 publication Critical patent/FR2236244B1/fr
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
    • G11B5/48—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
    • G11B5/54—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 into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • 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
    • G11B17/021—Selecting or spacing of record carriers for introducing the heads
    • 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
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements
    • 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
FR7417750A 1973-07-02 1974-05-15 Expired FR2236244B1 (OSRAM)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00375989A US3838462A (en) 1973-07-02 1973-07-02 Partitionable disc memory with flexible discs and conformally suspended head
US00375986A US3810243A (en) 1973-07-02 1973-07-02 Selectively tensioned transducer assembly for operation in compliant relation to individual memory discs of a partitionable aggregate of rotating flexible discs

Publications (2)

Publication Number Publication Date
FR2236244A1 true FR2236244A1 (OSRAM) 1975-01-31
FR2236244B1 FR2236244B1 (OSRAM) 1980-01-04

Family

ID=27007267

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7417750A Expired FR2236244B1 (OSRAM) 1973-07-02 1974-05-15

Country Status (3)

Country Link
BE (1) BE815618A (OSRAM)
CH (1) CH570672A5 (OSRAM)
FR (1) FR2236244B1 (OSRAM)

Also Published As

Publication number Publication date
BE815618A (fr) 1974-09-16
CH570672A5 (OSRAM) 1975-12-15
FR2236244B1 (OSRAM) 1980-01-04

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Legal Events

Date Code Title Description
ST Notification of lapse