DE3368792D1 - Perpendicular magnetic recording floppy disk - Google Patents

Perpendicular magnetic recording floppy disk

Info

Publication number
DE3368792D1
DE3368792D1 DE8383106124T DE3368792T DE3368792D1 DE 3368792 D1 DE3368792 D1 DE 3368792D1 DE 8383106124 T DE8383106124 T DE 8383106124T DE 3368792 T DE3368792 T DE 3368792T DE 3368792 D1 DE3368792 D1 DE 3368792D1
Authority
DE
Germany
Prior art keywords
magnetic recording
floppy disk
perpendicular magnetic
recording floppy
disk
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
DE8383106124T
Other languages
German (de)
English (en)
Inventor
Masayuki Sagoi
Reiji Nishikawa
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE3368792D1 publication Critical patent/DE3368792D1/de
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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/656—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
DE8383106124T 1982-06-25 1983-06-22 Perpendicular magnetic recording floppy disk Expired DE3368792D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57109528A JPS592230A (ja) 1982-06-25 1982-06-25 フロッピー磁気ディスク記録媒体の製造方法

Publications (1)

Publication Number Publication Date
DE3368792D1 true DE3368792D1 (en) 1987-02-05

Family

ID=14512539

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383106124T Expired DE3368792D1 (en) 1982-06-25 1983-06-22 Perpendicular magnetic recording floppy disk

Country Status (4)

Country Link
US (2) US4801481A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0099006B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS592230A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3368792D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2772520B2 (ja) * 1984-08-22 1998-07-02 日本電気株式会社 カラーテレビ信号符号化復号化装置
US4868070A (en) * 1984-11-29 1989-09-19 Fuji Photo Film Co., Ltd. Vertical magnetization type recording medium and manufacturing method therefor
US4717592A (en) * 1984-12-24 1988-01-05 Fuji Photo Film Co., Ltd. Vertical magnetization type recording medium and manufacturing method therefor
JP2524198B2 (ja) * 1988-07-13 1996-08-14 日立マクセル株式会社 可撓性磁気ディスク
JP2809528B2 (ja) * 1991-05-31 1998-10-08 富士写真フイルム株式会社 可撓性磁気ディスクの製造方法
US5968627A (en) * 1998-01-15 1999-10-19 Flextor, Inc. Metal foil disk for high areal density recording in environments of high mechanical shock
US6274233B1 (en) * 1998-03-26 2001-08-14 Showa Denko Kabushiki Kaisha Magnetic recording medium
AU2514900A (en) * 1999-01-27 2000-08-18 United States Of America As Represented By The Secretary Of The Navy, The Fabrication of conductive/non-conductive nanocomposites by laser evaporation
MY154004A (en) * 2007-05-23 2015-04-30 Southwest Res Inst Plasma immersion ion processing fro coating of hollow substrates
US9175381B2 (en) * 2008-07-09 2015-11-03 Southwest Research Institute Processing tubular surfaces using double glow discharge
US8753725B2 (en) 2011-03-11 2014-06-17 Southwest Research Institute Method for plasma immersion ion processing and depositing coatings in hollow substrates using a heated center electrode
US9121540B2 (en) 2012-11-21 2015-09-01 Southwest Research Institute Superhydrophobic compositions and coating process for the internal surface of tubular structures

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725611A (en) * 1971-09-30 1973-04-03 P Smaller Double coated storage medium for contact transfer recording
GB1530911A (en) * 1976-01-22 1978-11-01 Emi Ltd Magnetisable recording tapes
JPS5611622A (en) * 1979-07-02 1981-02-05 Tdk Corp Magnetic recording medium
DE2928096A1 (de) * 1979-07-12 1981-02-05 Basf Ag Magnetischer aufzeichnungstraeger
JPS5616939A (en) * 1979-07-20 1981-02-18 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5654635A (en) * 1979-10-08 1981-05-14 Nippon Telegr & Teleph Corp <Ntt> Vertical magnetic recording medium
JPS56165932A (en) * 1980-05-26 1981-12-19 Tdk Corp Production of magnetic recording medium
JPS56169220A (en) * 1980-05-29 1981-12-25 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5720921A (en) * 1980-07-15 1982-02-03 Fujitsu Ltd Vertically magnetized recording medium
JPS5724022A (en) * 1980-07-16 1982-02-08 Toshiba Corp Production of magnetic recording substance
JPS5778627A (en) * 1980-11-04 1982-05-17 Teijin Ltd Magnetic recording medium
JPS57100627A (en) * 1980-12-12 1982-06-22 Teijin Ltd Manufacture of vertical magnetic recording medium

Also Published As

Publication number Publication date
JPS592230A (ja) 1984-01-07
US4801481A (en) 1989-01-31
US4680197A (en) 1987-07-14
JPH0373054B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-11-20
EP0099006B1 (en) 1986-12-30
EP0099006A1 (en) 1984-01-25

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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