GB1439869A - Magnetic record carriers - Google Patents

Magnetic record carriers

Info

Publication number
GB1439869A
GB1439869A GB4305873A GB4305873A GB1439869A GB 1439869 A GB1439869 A GB 1439869A GB 4305873 A GB4305873 A GB 4305873A GB 4305873 A GB4305873 A GB 4305873A GB 1439869 A GB1439869 A GB 1439869A
Authority
GB
United Kingdom
Prior art keywords
magnetic record
magnetic
record carriers
substrate
intermediate layer
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
GB4305873A
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
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1439869A publication Critical patent/GB1439869A/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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • G11B5/722—Protective coatings, e.g. anti-static or antifriction containing an anticorrosive material
    • 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
    • H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)

Abstract

1439869 Vapour depositing magnetic record carriers INTERNATIONAL BUSINESS MACHINES CORP 13 Sept 1973 [14 Oct 1972] 43058/73 Heading C7F [Also in Division B2] A magnetic record carrier comprises a metal substrate, e.g. Al-Mg5, an intermediate layer of Cr, Ti, Mn or V, a magnetic layer, e.g. Fe-Co and an outer non-magnetic layer, which may be formed by oxidizing the Fe-Co. The intermediate layer may be partly oxidized by vapour depositing in the presence of oxygen. The Fe-Co may be deposited at an angle of 60 degrees to the substrate normal. The substrate may be pre-heated to 100 to 250‹C, and the source materials evaporated by electron beam.
GB4305873A 1972-10-14 1973-09-13 Magnetic record carriers Expired GB1439869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2250460A DE2250460C3 (en) 1972-10-14 1972-10-14 Magnetic recording medium

Publications (1)

Publication Number Publication Date
GB1439869A true GB1439869A (en) 1976-06-16

Family

ID=5859045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4305873A Expired GB1439869A (en) 1972-10-14 1973-09-13 Magnetic record carriers

Country Status (3)

Country Link
JP (1) JPS5433523B2 (en)
DE (1) DE2250460C3 (en)
GB (1) GB1439869A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430387A (en) 1979-11-14 1984-02-07 Hitachi, Ltd. Base plate for magnetic recording disc
US4610911A (en) * 1983-11-03 1986-09-09 Hewlett-Packard Company Thin film magnetic recording media
US4657814A (en) * 1982-11-22 1987-04-14 Fuji Photo Film Co., Ltd. Magnetic recording medium
EP0227069A2 (en) * 1985-12-25 1987-07-01 Hitachi, Ltd. Middle layer material for magnetic disc

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2608022C2 (en) 1976-02-27 1984-03-29 Basf Ag, 6700 Ludwigshafen Process for the production of magnetic recording media with a wear-resistant surface
JPS56124118A (en) * 1980-03-06 1981-09-29 Nec Corp Magnetic recording material
JPS5814318A (en) * 1981-07-17 1983-01-27 Fujitsu Ltd Medium for vertically magnetized recording
US5993956A (en) * 1997-04-22 1999-11-30 Carnegie Mellon University Manganese containing layer for magnetic recording media

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1054247B (en) * 1956-11-24 1959-04-02 Basf Ag Process for reducing the friction between magnetogram carriers and magnetic heads
US3719525A (en) * 1969-01-09 1973-03-06 Control Data Corp Magnetic record members having a protective recording surface and method of making
DE2113399C3 (en) * 1971-03-19 1973-10-04 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Roller cutting machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430387A (en) 1979-11-14 1984-02-07 Hitachi, Ltd. Base plate for magnetic recording disc
US4657814A (en) * 1982-11-22 1987-04-14 Fuji Photo Film Co., Ltd. Magnetic recording medium
US4610911A (en) * 1983-11-03 1986-09-09 Hewlett-Packard Company Thin film magnetic recording media
EP0227069A2 (en) * 1985-12-25 1987-07-01 Hitachi, Ltd. Middle layer material for magnetic disc
EP0227069A3 (en) * 1985-12-25 1989-06-14 Hitachi, Ltd. Middle layer material for magnetic disc

Also Published As

Publication number Publication date
JPS5433523B2 (en) 1979-10-22
JPS4974912A (en) 1974-07-19
DE2250460C3 (en) 1981-09-10
DE2250460B2 (en) 1980-12-04
DE2250460A1 (en) 1974-04-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee