DE3068960D1 - Magnetic recording disc and method for forming a protective overcoating thereon - Google Patents

Magnetic recording disc and method for forming a protective overcoating thereon

Info

Publication number
DE3068960D1
DE3068960D1 DE8080105944T DE3068960T DE3068960D1 DE 3068960 D1 DE3068960 D1 DE 3068960D1 DE 8080105944 T DE8080105944 T DE 8080105944T DE 3068960 T DE3068960 T DE 3068960T DE 3068960 D1 DE3068960 D1 DE 3068960D1
Authority
DE
Germany
Prior art keywords
forming
magnetic recording
recording disc
protective overcoating
overcoating
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
DE8080105944T
Other languages
English (en)
Inventor
Carl W Nelson
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.)
Datapoint Corp
Original Assignee
Datapoint 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
Application filed by Datapoint Corp filed Critical Datapoint Corp
Application granted granted Critical
Publication of DE3068960D1 publication Critical patent/DE3068960D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • G11B5/727—Inorganic carbon protective coating, e.g. graphite, diamond like carbon or doped carbon
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
DE8080105944T 1979-10-01 1980-10-01 Magnetic recording disc and method for forming a protective overcoating thereon Expired DE3068960D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8048179A 1979-10-01 1979-10-01

Publications (1)

Publication Number Publication Date
DE3068960D1 true DE3068960D1 (en) 1984-09-20

Family

ID=22157657

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080105944T Expired DE3068960D1 (en) 1979-10-01 1980-10-01 Magnetic recording disc and method for forming a protective overcoating thereon

Country Status (2)

Country Link
EP (1) EP0026496B1 (de)
DE (1) DE3068960D1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588653A (en) * 1983-08-29 1986-05-13 Dynamic Disk, Inc. Magnetic memory disk
DE3546325C2 (de) * 1985-01-17 1994-06-01 Hitachi Metals Ltd Magnetisches Aufzeichnungsmedium
JPS61210518A (ja) * 1985-03-13 1986-09-18 Matsushita Electric Ind Co Ltd 磁気記録媒体の製造方法
JPS61289530A (ja) * 1985-06-17 1986-12-19 Hitachi Ltd 磁気記録媒体
US4647494A (en) * 1985-10-31 1987-03-03 International Business Machines Corporation Silicon/carbon protection of metallic magnetic structures
GB8815235D0 (en) * 1988-06-27 1988-08-03 Plasmon Data Systems Inc Improvements relating to optical data storage disks
US5226033A (en) * 1990-03-27 1993-07-06 Sony Corporation Magneto-optical disk hub in which the inner peripheral edge portion of the spindle opening is strengthened and made abrasion resistant
US8492053B2 (en) * 2008-07-29 2013-07-23 GM Global Technology Operations LLC Surface treated carbon coatings for flow field plates

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1054247B (de) * 1956-11-24 1959-04-02 Basf Ag Verfahren zur Verkleinerung der Reibung zwischen Magnetogrammtraegern und Magnetkoepfen
JPS576177B2 (de) * 1974-08-22 1982-02-03

Also Published As

Publication number Publication date
EP0026496B1 (de) 1984-08-15
EP0026496A1 (de) 1981-04-08

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee