DE3573482D1 - Vertical magnetic recording medium and process for preparation thereof - Google Patents

Vertical magnetic recording medium and process for preparation thereof

Info

Publication number
DE3573482D1
DE3573482D1 DE8585301944T DE3573482T DE3573482D1 DE 3573482 D1 DE3573482 D1 DE 3573482D1 DE 8585301944 T DE8585301944 T DE 8585301944T DE 3573482 T DE3573482 T DE 3573482T DE 3573482 D1 DE3573482 D1 DE 3573482D1
Authority
DE
Germany
Prior art keywords
preparation
recording medium
magnetic recording
vertical magnetic
vertical
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
DE8585301944T
Other languages
English (en)
Inventor
Tetsuo Oka
Kenji Hayashi
Takayoshi Akamatsu
Satoshi Horiuchi
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 JP5517084A external-priority patent/JPS60201520A/ja
Priority claimed from JP21441284A external-priority patent/JPS6194237A/ja
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Application granted granted Critical
Publication of DE3573482D1 publication Critical patent/DE3573482D1/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • 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
    • G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
    • 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
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249955—Void-containing component partially impregnated with adjacent component
    • Y10T428/249956—Void-containing component is inorganic
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/268—Monolayer with structurally defined element
    • 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]
    • Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
    • Y10T428/31544—Addition polymer is perhalogenated

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
DE8585301944T 1984-03-22 1985-03-20 Vertical magnetic recording medium and process for preparation thereof Expired DE3573482D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5517084A JPS60201520A (ja) 1984-03-22 1984-03-22 垂直磁気記録媒体
JP21441284A JPS6194237A (ja) 1984-10-15 1984-10-15 垂直磁気記録媒体の製造方法

Publications (1)

Publication Number Publication Date
DE3573482D1 true DE3573482D1 (en) 1989-11-09

Family

ID=26396034

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585301944T Expired DE3573482D1 (en) 1984-03-22 1985-03-20 Vertical magnetic recording medium and process for preparation thereof

Country Status (4)

Country Link
US (2) US4726988A (de)
EP (1) EP0156625B1 (de)
CA (1) CA1235808A (de)
DE (1) DE3573482D1 (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62208412A (ja) * 1986-03-07 1987-09-12 Hitachi Ltd 磁気記録媒体およびその製造方法
DE3789271T2 (de) * 1986-10-21 1994-07-14 Matsushita Electric Ind Co Ltd Magnetische Eisenoxydfilme und ihre Herstellung.
JPH0654533B2 (ja) * 1987-02-04 1994-07-20 富士写真フイルム株式会社 磁気記録媒体
US5244751A (en) * 1988-03-11 1993-09-14 Hitachi, Ltd. Perpendicular magnetic recording medium, its fabrication method and read-write machine using it
JPH01248312A (ja) * 1988-03-29 1989-10-03 Kanegafuchi Chem Ind Co Ltd 垂直磁気記録媒体
NL8802960A (nl) * 1988-12-01 1990-07-02 Philips Nv Systeem omvattende een magneetkop en een verplaatsbare magnetische informatiedrager, alsmede een magneetkop en een magnetische informatiedrager geschikt voor toepassing in het systeem.
US5320881A (en) * 1991-08-27 1994-06-14 Northeastern University Fabrication of ferrite films using laser deposition
US5227204A (en) * 1991-08-27 1993-07-13 Northeastern University Fabrication of ferrite films using laser deposition
DE4443530A1 (de) * 1993-12-16 1995-06-22 Basf Magnetics Gmbh Magnetisches Aufzeichnungsmedium und Verfahren zur Herstellung desselben
JP3491942B2 (ja) * 1994-01-31 2004-02-03 富士写真フイルム株式会社 磁気記録媒体
US5650889A (en) * 1994-02-07 1997-07-22 Hitachi, Ltd. Magnetic recording medium containing heavy rare gas atoms, and a magnetic transducing system using the medium
EP0713598A1 (de) * 1994-06-09 1996-05-29 Koninklijke Philips Electronics N.V. Magneto-optisches aufzeichnungsmedium
JPH08102034A (ja) * 1994-09-19 1996-04-16 Minnesota Mining & Mfg Co <3M> 磁気記録媒体
JPH103638A (ja) * 1996-06-18 1998-01-06 Sony Corp 磁気記録媒体
US6231968B1 (en) * 1997-09-04 2001-05-15 Matsushita Electric Industrial Co., Ltd. Magnetic thin film and magnetic device using the same
JPH11189874A (ja) * 1997-12-25 1999-07-13 Tdk Corp 薄膜形成方法および装置
US6428848B1 (en) * 1998-08-06 2002-08-06 Toray Industries, Inc. Method for producing a metal evaporated article
WO2001027689A1 (fr) * 1999-10-15 2001-04-19 Hitachi, Ltd. Element a fonctionnalite optique, son procede de production et son application
EP1174526A1 (de) * 2000-07-17 2002-01-23 Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO Kontinuierliches Abscheiden aus der Gasphase
JP4234338B2 (ja) * 2001-12-21 2009-03-04 Ｔｄｋ株式会社 フィルムの蒸着方法
KR20060120588A (ko) * 2003-08-20 2006-11-27 다우 코닝 코포레이션 카바졸릴 작용성 사이클로실록산, 실리콘 조성물 및 유기발광 다이오드
WO2005019309A1 (en) * 2003-08-20 2005-03-03 Dow Corning Corporation Carbazolyl-functional polysiloxane resins, silicone composition, and organic light-emitting diode
KR20060065700A (ko) * 2003-08-20 2006-06-14 다우 코닝 코포레이션 카바졸릴-관능성 직쇄 폴리실록산, 실리콘 조성물 및 유기발광 다이오드
US20050181239A1 (en) * 2004-02-12 2005-08-18 Seagate Technology Llc Granular magnetic recording media with improved corrosion resistance by pre-carbon overcoat ion etching
US20070087227A1 (en) * 2005-10-14 2007-04-19 Seagate Technology Llc Granular magnetic recording media with improved corrosion resistance by cap layer + pre-covercoat etching
US7691499B2 (en) * 2006-04-21 2010-04-06 Seagate Technology Llc Corrosion-resistant granular magnetic media with improved recording performance and methods of manufacturing same
JP4288297B1 (ja) * 2008-01-09 2009-07-01 三菱重工業株式会社 圧力制御装置および圧力制御方法
KR101451607B1 (ko) * 2008-03-26 2014-10-16 다우 코닝 코포레이션 실리콘 조성물 및 유기 발광 다이오드
US20100092802A1 (en) * 2008-10-15 2010-04-15 Seagate Technology Llc Multi-step etch process for granular media
GB2559685B (en) 2015-03-10 2019-06-12 Bobst Manchester Ltd Vacuum Coater For Coating A Web

Family Cites Families (23)

* 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
JPS54124708A (en) * 1978-03-20 1979-09-27 Hitachi Maxell Magnetic record medium
DE2839378B1 (de) * 1978-09-11 1979-11-15 Basf Ag Magnetischer Aufzeichnungstraeger
DE2906787A1 (de) * 1979-02-22 1980-09-04 Hoechst Ag Ueberzugsmittel auf basis eines copolymeren aus tetrafluorethylen und einem perfluor(alkylvinyl)-ether
DE3024918A1 (de) * 1979-07-02 1981-01-22 Fuji Photo Film Co Ltd Magnetisches aufzeichnungsmaterial und verfahren zu dessen herstellung
US4452857A (en) * 1981-01-12 1984-06-05 Shunpei Yamazaki Magnetic medium
JPS57143729A (en) * 1981-02-27 1982-09-06 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57143728A (en) * 1981-02-27 1982-09-06 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57152517A (en) * 1981-03-17 1982-09-20 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS57152521A (en) * 1981-03-17 1982-09-20 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5834903A (ja) * 1981-08-27 1983-03-01 Tdk Corp 磁気記録媒体
US4477489A (en) * 1981-09-03 1984-10-16 Fuji Photo Film Co., Ltd. Method of making magnetic recording medium
US4405677A (en) * 1981-09-28 1983-09-20 Xerox Corporation Post treatment of perpendicular magnetic recording media
US4388367A (en) * 1981-09-28 1983-06-14 Xerox Corporation Perpendicular magnetic recording medium and fabrication
JPS5883328A (ja) * 1981-11-12 1983-05-19 Fuji Photo Film Co Ltd 磁気記録媒体
JPS59119538A (ja) * 1982-12-25 1984-07-10 Tdk Corp 磁気記録媒体
JPS59160828A (ja) * 1983-03-01 1984-09-11 Fuji Photo Film Co Ltd 磁気記録媒体
EP0122030B1 (de) * 1983-03-08 1987-08-26 Nihon Shinku Gijutsu Kabushiki Kaisha Magnetisches Aufzeichnungsmedium und Herstellungsverfahren für ein derartiges Medium
JPH0766528B2 (ja) * 1983-03-18 1995-07-19 富士写真フイルム株式会社 磁気記録媒体
JPS59203238A (ja) * 1983-04-30 1984-11-17 Tdk Corp 磁気記録媒体の製造方法
US4526833A (en) * 1983-10-03 1985-07-02 Minnesota Mining And Manufacturing Company Magnetic recording medium having a perfluoropolyether polymer protective coating
GB2149320B (en) * 1983-10-18 1988-02-10 Tdk Corp Magnetic recording medium
JPS60154323A (ja) * 1984-01-20 1985-08-14 Sony Corp 磁気記録媒体

Also Published As

Publication number Publication date
EP0156625A2 (de) 1985-10-02
US4726988A (en) 1988-02-23
EP0156625A3 (en) 1986-12-30
US4888211A (en) 1989-12-19
CA1235808A (en) 1988-04-26
EP0156625B1 (de) 1989-10-04

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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