DE3850824D1 - Magnetplatte für waagerechte Aufnahme. - Google Patents

Magnetplatte für waagerechte Aufnahme.

Info

Publication number
DE3850824D1
DE3850824D1 DE3850824T DE3850824T DE3850824D1 DE 3850824 D1 DE3850824 D1 DE 3850824D1 DE 3850824 T DE3850824 T DE 3850824T DE 3850824 T DE3850824 T DE 3850824T DE 3850824 D1 DE3850824 D1 DE 3850824D1
Authority
DE
Germany
Prior art keywords
magnetic plate
horizontal recording
recording
horizontal
magnetic
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 - Fee Related
Application number
DE3850824T
Other languages
English (en)
Other versions
DE3850824T2 (de
Inventor
Ryuishi C O Central Rese Kuzuo
Atsushi C O Central R Kawamoto
Junya C O Central Researc Tada
Kenji C O Central Resea Ohmori
Hiroko C O Central Rese Sekiya
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.)
Sumitomo Metal Mining Co Ltd
Original Assignee
Sumitomo Metal Mining Co Ltd
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
Priority claimed from JP17914188A external-priority patent/JPH01232522A/ja
Application filed by Sumitomo Metal Mining Co Ltd filed Critical Sumitomo Metal Mining Co Ltd
Application granted granted Critical
Publication of DE3850824D1 publication Critical patent/DE3850824D1/de
Publication of DE3850824T2 publication Critical patent/DE3850824T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • 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
    • G11B5/7373—Non-magnetic single underlayer comprising chromium
    • 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
    • Y10S428/90—Magnetic feature
    • 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
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
    • 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
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other
DE3850824T 1987-08-06 1988-08-02 Magnetplatte für waagerechte Aufnahme. Expired - Fee Related DE3850824T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP19533987 1987-08-06
JP19533887 1987-08-06
JP20417787 1987-08-19
JP17914188A JPH01232522A (ja) 1987-08-06 1988-07-20 磁気ディスク

Publications (2)

Publication Number Publication Date
DE3850824D1 true DE3850824D1 (de) 1994-09-01
DE3850824T2 DE3850824T2 (de) 1995-01-19

Family

ID=27474872

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3850824T Expired - Fee Related DE3850824T2 (de) 1987-08-06 1988-08-02 Magnetplatte für waagerechte Aufnahme.

Country Status (3)

Country Link
US (1) US5006388A (de)
EP (1) EP0302706B1 (de)
DE (1) DE3850824T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082750A (en) * 1988-10-21 1992-01-21 Kubota Ltd. Magnetic recording medium of thin metal film type
JPH02226515A (ja) * 1989-02-28 1990-09-10 Hitachi Ltd 磁気記録媒体
JP2513893B2 (ja) * 1989-04-26 1996-07-03 日立金属株式会社 磁気記録媒体
US5614329A (en) * 1991-03-05 1997-03-25 Fuji Photo Film Co., Ltd. Soft-magnetic thin film
JPH0573881A (ja) * 1991-09-17 1993-03-26 Hitachi Ltd 磁気記録媒体およびその製造方法
JPH05274644A (ja) * 1992-01-29 1993-10-22 Mitsubishi Kasei Corp 磁気記録媒体及びその製造方法
US5580667A (en) * 1992-06-30 1996-12-03 Hmt Technology Corporation Multilayered medium with gradient isolation layer
US5900324A (en) * 1994-10-27 1999-05-04 Hoya Corporation Magnetic recording media, methods for producing the same and magnetic recorders
JP3589762B2 (ja) * 1995-11-20 2004-11-17 ストアメディア インコーポレーテッド 金属薄膜型磁気記録媒体
US7087325B2 (en) * 2000-02-23 2006-08-08 Showa Denko Kabushiki Kaisha Magnetic recording medium and production process thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150939A (en) * 1961-07-17 1964-09-29 Ibm High density record carrier
JPS6012690B2 (ja) * 1977-07-12 1985-04-03 富士写真フイルム株式会社 磁気記録媒体の製法
JPS57183004A (en) * 1981-05-07 1982-11-11 Fuji Photo Film Co Ltd Magnetically recording medium
JPS6056414B2 (ja) * 1982-05-24 1985-12-10 三菱マテリアル株式会社 磁気記録媒体用Ｃｏ基合金
JPS5974606A (ja) * 1982-10-21 1984-04-27 Fuji Photo Film Co Ltd 磁気記録媒体
JP2539349B2 (ja) * 1983-10-14 1996-10-02 株式会社日立製作所 垂直磁気記録媒体
US4631202A (en) * 1983-11-03 1986-12-23 Hewlett-Packard Company Thin film magnetic recording film
US4552820A (en) * 1984-04-25 1985-11-12 Lin Data Corporation Disc media
DE3664011D1 (en) * 1985-07-18 1989-07-20 Toshiba Kk Magnetic recording medium
US4657824A (en) * 1985-10-28 1987-04-14 International Business Machines Corporation Vertical magnetic recording medium with an intermetallic compound nucleating layer
EP0227069A3 (de) * 1985-12-25 1989-06-14 Hitachi, Ltd. Material für die Mittelschicht einer Magnetplatte
DE3762052D1 (de) * 1986-03-31 1990-05-03 Unisys Corp Abscheidung einer vanadin-unterlage fuer magnetische filme.
US4654276A (en) * 1986-04-29 1987-03-31 International Business Machines Corporation Magnetic recording medium with an underlayer and a cobalt-based magnetic layer
US4652499A (en) * 1986-04-29 1987-03-24 International Business Machines Magnetic recording medium with a chromium alloy underlayer and a cobalt-based magnetic layer

Also Published As

Publication number Publication date
US5006388A (en) 1991-04-09
EP0302706B1 (de) 1994-07-27
DE3850824T2 (de) 1995-01-19
EP0302706A2 (de) 1989-02-08
EP0302706A3 (en) 1990-03-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee