GB1379360A - Manufacture of magnetic record carriers - Google Patents

Manufacture of magnetic record carriers

Info

Publication number
GB1379360A
GB1379360A GB4306073A GB4306073A GB1379360A GB 1379360 A GB1379360 A GB 1379360A GB 4306073 A GB4306073 A GB 4306073A GB 4306073 A GB4306073 A GB 4306073A GB 1379360 A GB1379360 A GB 1379360A
Authority
GB
United Kingdom
Prior art keywords
magnetic
magnetic record
layer
record carriers
manufacture
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
GB4306073A
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 GB1379360A publication Critical patent/GB1379360A/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • 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
    • H01F10/26—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers
    • H01F10/28—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers characterised by the composition of the substrate

Landscapes

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

Abstract

1379360 Vapour deposition of magnetic record carriers INTERNATIONAL BUSINESS MACHINES CORP 13 Sept 1973 [14 Oct 1972] 43060/73 Heading C7F A magnetic record carrier is formed by depositing a non-magnetic oxide or nitride layer of e.g. Ti, V, Cr, Al, Mo, W, Mn, Fe or Si on a substrate of e.g. Al-Mg (heated to 100 to 250‹C) and then vapour depositing at an angle of 50 to 75 degrees to the normal to the substrate a magnetic layer of e.g. Fe-Co. The surface of the Fe-Co layer may be subsequently oxidized. The oxide or nitride layer may be vapour deposited in an oxygen or nitrogen atmosphere. The materials may be evaporated by electron beams.
GB4306073A 1972-10-14 1973-09-13 Manufacture of magnetic record carriers Expired GB1379360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722250481 DE2250481C3 (en) 1972-10-14 1972-10-14 Process for the production of a magnetic recording medium

Publications (1)

Publication Number Publication Date
GB1379360A true GB1379360A (en) 1975-01-02

Family

ID=5859060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4306073A Expired GB1379360A (en) 1972-10-14 1973-09-13 Manufacture of magnetic record carriers

Country Status (4)

Country Link
JP (1) JPS5433522B2 (en)
DE (1) DE2250481C3 (en)
FR (1) FR2203131B1 (en)
GB (1) GB1379360A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008328A1 (en) * 1978-08-28 1980-03-05 International Business Machines Corporation Amorphous magnetic films and a method of making such films
EP0010626A1 (en) * 1978-10-30 1980-05-14 International Business Machines Corporation A magnetic recording medium
US4287225A (en) 1979-03-14 1981-09-01 Basf Aktiengesellschaft Process of making a magnetic recording medium
EP0054640B1 (en) * 1980-12-19 1985-06-12 International Business Machines Corporation Composite magnetic recording disk
US5316631A (en) * 1989-02-16 1994-05-31 Victor Company Of Japan, Ltd. Method for fabricating a magnetic recording medium

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1599161A (en) * 1976-07-15 1981-09-30 Matsushita Electric Ind Co Ltd Magnetic recording medium and method of making the same
JPS5389000A (en) * 1977-01-18 1978-08-04 Mitsubishi Metal Corp Abrasionnresisting magnetic alloy laminating sheet
JPS5847738Y2 (en) * 1980-05-07 1983-10-31 松下電工株式会社 Structure of small electrical equipment
CA1188796A (en) * 1981-04-14 1985-06-11 Kenji Yazawa Magnetic recording medium
JPS57191830A (en) * 1981-05-22 1982-11-25 Sony Corp Magnetic recording medium
JPS6080117A (en) * 1983-10-11 1985-05-08 Hitachi Condenser Co Ltd Magnetic recording medium
JPH07118075B2 (en) * 1986-09-01 1995-12-18 株式会社日立製作所 Magnetic recording medium for magnetic disk and manufacturing method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228307B (en) * 1961-07-17 1966-11-10 Ibm Magnetic recording medium with a magnetic layer with low surface roughness and high coercive force
US3342632A (en) * 1964-08-05 1967-09-19 Ibm Magnetic coating
DE1439443B2 (en) * 1964-09-16 1972-01-13 Siemens AG, 1000 Berlin u. 8000 München METHOD OF MANUFACTURING MAGNETIC STORAGE MATRIX
JPS4414770Y1 (en) * 1966-10-24 1969-06-24

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008328A1 (en) * 1978-08-28 1980-03-05 International Business Machines Corporation Amorphous magnetic films and a method of making such films
EP0010626A1 (en) * 1978-10-30 1980-05-14 International Business Machines Corporation A magnetic recording medium
US4287225A (en) 1979-03-14 1981-09-01 Basf Aktiengesellschaft Process of making a magnetic recording medium
EP0054640B1 (en) * 1980-12-19 1985-06-12 International Business Machines Corporation Composite magnetic recording disk
US5316631A (en) * 1989-02-16 1994-05-31 Victor Company Of Japan, Ltd. Method for fabricating a magnetic recording medium

Also Published As

Publication number Publication date
FR2203131B1 (en) 1976-11-19
JPS4974911A (en) 1974-07-19
JPS5433522B2 (en) 1979-10-22
FR2203131A1 (en) 1974-05-10
DE2250481B2 (en) 1980-10-30
DE2250481C3 (en) 1981-08-27
DE2250481A1 (en) 1974-04-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee