IT1074193B - Supporto di registrazione magnetica - Google Patents

Supporto di registrazione magnetica

Info

Publication number
IT1074193B
IT1074193B IT30277/76A IT3027776A IT1074193B IT 1074193 B IT1074193 B IT 1074193B IT 30277/76 A IT30277/76 A IT 30277/76A IT 3027776 A IT3027776 A IT 3027776A IT 1074193 B IT1074193 B IT 1074193B
Authority
IT
Italy
Prior art keywords
registration support
magnetic registration
magnetic
support
registration
Prior art date
Application number
IT30277/76A
Other languages
English (en)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT1074193B publication Critical patent/IT1074193B/it

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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier layers
    • 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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/733—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the addition of non-magnetic particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/923—Physical dimension
    • Y10S428/924—Composite
    • Y10S428/926—Thickness of individual layer specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12556—Organic component
    • Y10T428/12569—Synthetic resin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12611—Oxide-containing component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12611—Oxide-containing component
    • Y10T428/12618—Plural oxides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component
IT30277/76A 1975-12-17 1976-12-10 Supporto di registrazione magnetica IT1074193B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2556755A DE2556755C2 (de) 1975-12-17 1975-12-17 Mehrschichtiger magnetischer Aufzeichnungsträger

Publications (1)

Publication Number Publication Date
IT1074193B true IT1074193B (it) 1985-04-17

Family

ID=5964595

Family Applications (1)

Application Number Title Priority Date Filing Date
IT30277/76A IT1074193B (it) 1975-12-17 1976-12-10 Supporto di registrazione magnetica

Country Status (8)

Country Link
US (1) US4074016A (it)
JP (1) JPS5274307A (it)
CA (1) CA1103098A (it)
DE (1) DE2556755C2 (it)
FR (1) FR2335906A1 (it)
GB (1) GB1530197A (it)
IT (1) IT1074193B (it)
NL (1) NL7613903A (it)

Families Citing this family (14)

* 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 Industrial Co Ltd Magnetic recording medium and method of making the same
US4079169A (en) * 1976-11-15 1978-03-14 International Business Machines Corporation Cobalt base alloy as protective layer for magnetic recording media
DE2909891A1 (de) * 1979-03-14 1980-09-25 Basf Ag Magnetischer aufzeichnungstraeger
DE3014718A1 (de) * 1980-04-17 1981-10-22 Ibm Deutschland Gmbh, 7000 Stuttgart Mehrschichtige magnetische duennfilmplatte mit kunstharzschicht sowie verfahren zur herstellung derselben
JPS57164420A (en) * 1981-03-31 1982-10-09 Hitachi Maxell Ltd Magnetic recording medium
JPS57167123A (en) * 1981-04-03 1982-10-14 Hitachi Maxell Ltd Magnetic recording medium
JPS57167124A (en) * 1981-04-03 1982-10-14 Hitachi Maxell Ltd Magnetic recording medium
JPS61217925A (ja) * 1985-03-23 1986-09-27 Victor Co Of Japan Ltd 磁気記録媒体
US4880514A (en) * 1985-05-03 1989-11-14 Akshic Memories Corporation Method of making a thin film magnetic disk
US5082747A (en) * 1985-11-12 1992-01-21 Hedgcoth Virgle L Magnetic recording disk and sputtering process and apparatus for producing same
US4894133A (en) * 1985-11-12 1990-01-16 Virgle L. Hedgcoth Method and apparatus making magnetic recording disk
DE3601438C1 (de) * 1986-01-20 1987-04-09 Glyco Metall Werke Schichtverbundwerkstoff mit Diffusionssperrschicht,insbesondere fuer Gleit- und Reibelemente,sowie Verfahren zu seiner Herstellung
JP2547651B2 (ja) * 1989-05-22 1996-10-23 日本板硝子株式会社 磁気記録媒体
TW342136U (en) * 1993-12-14 1998-10-01 Ibm Thin film magnetic transducer having a stable soft film for reducing asymmetry variations

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL265011A (it) * 1960-05-19 1900-01-01
US3150939A (en) * 1961-07-17 1964-09-29 Ibm High density record carrier
GB1023150A (en) * 1962-09-18 1966-03-23 Gevaert Photo Prod Nv Magnetic signal carrier
US3520664A (en) * 1966-11-10 1970-07-14 Ibm Magnetic thin-film device
US3738818A (en) * 1971-06-03 1973-06-12 Control Data Corp High recording density magnetic media with square b-h loop
US3730852A (en) * 1971-11-09 1973-05-01 Basf Ag Manufacture of abrasion-resistant magnetic recording media

Also Published As

Publication number Publication date
NL7613903A (nl) 1977-06-21
JPS5274307A (en) 1977-06-22
US4074016A (en) 1978-02-14
FR2335906B1 (it) 1978-12-22
DE2556755C2 (de) 1982-04-15
JPS5615044B2 (it) 1981-04-08
GB1530197A (en) 1978-10-25
DE2556755A1 (de) 1977-07-07
CA1103098A (en) 1981-06-16
FR2335906A1 (fr) 1977-07-15

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