DE69316484D1 - Magnetischer Aufzeichnungsträger und Verfahren zu seiner Herstellung - Google Patents

Magnetischer Aufzeichnungsträger und Verfahren zu seiner Herstellung

Info

Publication number
DE69316484D1
DE69316484D1 DE69316484T DE69316484T DE69316484D1 DE 69316484 D1 DE69316484 D1 DE 69316484D1 DE 69316484 T DE69316484 T DE 69316484T DE 69316484 T DE69316484 T DE 69316484T DE 69316484 D1 DE69316484 D1 DE 69316484D1
Authority
DE
Germany
Prior art keywords
production
recording medium
magnetic recording
magnetic
medium
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
DE69316484T
Other languages
English (en)
Other versions
DE69316484T2 (de
Inventor
Tatsuaki Ishida
Ryuji Sugita
Kiyokazu Tohma
Yasuaki Ban
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69316484D1 publication Critical patent/DE69316484D1/de
Publication of DE69316484T2 publication Critical patent/DE69316484T2/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
    • 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
    • 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
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
    • 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
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
DE69316484T 1992-09-09 1993-09-08 Magnetischer Aufzeichnungsträger und Verfahren zu seiner Herstellung Expired - Fee Related DE69316484T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP24054092 1992-09-09
JP35798192 1992-12-25
JP5085916A JP2988188B2 (ja) 1992-09-09 1993-04-13 磁気記録媒体およびその製造方法

Publications (2)

Publication Number Publication Date
DE69316484D1 true DE69316484D1 (de) 1998-02-26
DE69316484T2 DE69316484T2 (de) 1998-10-01

Family

ID=27304991

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69316484T Expired - Fee Related DE69316484T2 (de) 1992-09-09 1993-09-08 Magnetischer Aufzeichnungsträger und Verfahren zu seiner Herstellung

Country Status (5)

Country Link
US (1) US5554440A (de)
EP (1) EP0587133B1 (de)
JP (1) JP2988188B2 (de)
KR (1) KR0162913B1 (de)
DE (1) DE69316484T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3867544B2 (ja) * 2001-10-16 2007-01-10 ソニー株式会社 磁気記録媒体およびその製造方法
US6855416B2 (en) 2001-10-17 2005-02-15 Victor Company Of Japan, Ltd. Thin film magnetic recording medium
JP2004039195A (ja) * 2002-07-08 2004-02-05 Sony Corp 磁気記録媒体

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59119532A (ja) * 1982-12-25 1984-07-10 Tdk Corp 磁気記録媒体
JPS59119531A (ja) * 1982-12-25 1984-07-10 Tdk Corp 磁気記録媒体
JPS59124035A (ja) * 1982-12-30 1984-07-18 Hitachi Maxell Ltd 磁気記録媒体の製造方法
JPS59185024A (ja) * 1983-04-04 1984-10-20 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPS60201521A (ja) * 1984-03-23 1985-10-12 Sony Corp 磁気記録媒体
JPH0685216B2 (ja) * 1985-04-11 1994-10-26 富士写真フイルム株式会社 磁気記録媒体の製造方法
US5244751A (en) * 1988-03-11 1993-09-14 Hitachi, Ltd. Perpendicular magnetic recording medium, its fabrication method and read-write machine using it
EP0443478A3 (en) * 1990-02-19 1992-03-11 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Magnetic recording medium and method for preparing the same
JP2897840B2 (ja) * 1990-05-10 1999-05-31 ティーディーケイ株式会社 磁気記録媒体
JPH0467433A (ja) * 1990-07-06 1992-03-03 Hitachi Maxell Ltd 磁気記録媒体の製造方法

Also Published As

Publication number Publication date
DE69316484T2 (de) 1998-10-01
JP2988188B2 (ja) 1999-12-06
US5554440A (en) 1996-09-10
JPH06243457A (ja) 1994-09-02
KR0162913B1 (ko) 1999-01-15
KR940007791A (ko) 1994-04-28
EP0587133A1 (de) 1994-03-16
EP0587133B1 (de) 1998-01-21

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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