GB1257281A - - Google Patents

Info

Publication number
GB1257281A
GB1257281A GB1257281DA GB1257281A GB 1257281 A GB1257281 A GB 1257281A GB 1257281D A GB1257281D A GB 1257281DA GB 1257281 A GB1257281 A GB 1257281A
Authority
GB
United Kingdom
Prior art keywords
skin
density
brass
heading
april
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
Other languages
English (en)
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 filed Critical
Publication of GB1257281A publication Critical patent/GB1257281A/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
    • 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

Landscapes

  • Magnetic Record Carriers (AREA)
  • Rotational Drive Of Disk (AREA)
  • Paints Or Removers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
GB1257281D 1969-04-08 1970-02-24 Expired GB1257281A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81438469A 1969-04-08 1969-04-08

Publications (1)

Publication Number Publication Date
GB1257281A true GB1257281A (enExample) 1971-12-15

Family

ID=25214908

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1257281D Expired GB1257281A (enExample) 1969-04-08 1970-02-24

Country Status (8)

Country Link
US (1) US3646533A (enExample)
JP (1) JPS4842489B1 (enExample)
BE (1) BE748680A (enExample)
CA (1) CA925613A (enExample)
DE (1) DE2016178C3 (enExample)
FR (1) FR2043026A5 (enExample)
GB (1) GB1257281A (enExample)
NL (1) NL7005043A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131895A1 (en) * 1983-07-19 1985-01-23 Hitachi Metals, Ltd. Magnetic disk substrate

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964101A (en) * 1973-06-15 1976-06-15 Tetsuo Hino Magnetic recording disc
EP0047330B1 (de) * 1980-09-06 1984-06-13 Ibm Deutschland Gmbh Magnetplatten-Trägerkern aus faserverstärktem Kunststoff
ATE27663T1 (de) * 1981-07-23 1987-06-15 Ibm Magnetplattensubstrat mit aus kunststoff bestehendem kern.
US4558383A (en) * 1983-06-30 1985-12-10 International Business Machines Corporation Information storage disk transducer position control system using a prerecorded servo pattern requiring no alignment with the storage disk
US4680211A (en) * 1985-07-25 1987-07-14 The Dow Chemical Company Recording disks
JP3935976B2 (ja) * 1995-02-08 2007-06-27 ヒューレット・パッカード・カンパニー 半導体層構造および大容量メモリ装置の記録媒体
US6055140A (en) * 1997-07-25 2000-04-25 Seagate Technology, Inc. Rigid disc plastic substrate with high stiffness insert
US7227717B1 (en) * 2001-06-18 2007-06-05 Seagate Technology Llc Asymmetric disk surface properties in one head disk drives
FR2845512A1 (fr) * 2002-10-03 2004-04-09 Commissariat Energie Atomique Dispositif d'enregistrement de donnees comportant un support de memoire en forme de membrane
FR2845513B1 (fr) * 2002-10-03 2006-08-11 Commissariat Energie Atomique Dispositif d'enregistrement de donnees comportant un support de memoire en forme de membrane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131895A1 (en) * 1983-07-19 1985-01-23 Hitachi Metals, Ltd. Magnetic disk substrate

Also Published As

Publication number Publication date
DE2016178A1 (de) 1970-11-12
NL7005043A (enExample) 1970-10-12
DE2016178C3 (de) 1974-07-25
JPS4842489B1 (enExample) 1973-12-13
FR2043026A5 (enExample) 1971-02-12
DE2016178B2 (de) 1973-12-20
US3646533A (en) 1972-02-29
CA925613A (en) 1973-05-01
BE748680A (fr) 1970-09-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee