DE69608489D1 - Magnetisches Aufzeichnungsmedium - Google Patents

Magnetisches Aufzeichnungsmedium

Info

Publication number
DE69608489D1
DE69608489D1 DE69608489T DE69608489T DE69608489D1 DE 69608489 D1 DE69608489 D1 DE 69608489D1 DE 69608489 T DE69608489 T DE 69608489T DE 69608489 T DE69608489 T DE 69608489T DE 69608489 D1 DE69608489 D1 DE 69608489D1
Authority
DE
Germany
Prior art keywords
recording medium
magnetic recording
magnetic
medium
recording
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
DE69608489T
Other languages
English (en)
Other versions
DE69608489T3 (de
DE69608489T2 (de
Inventor
Akihiko Seki
Akira Saitoh
Satoru Tsuchida
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.)
TDK Corp
Original Assignee
TDK 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=13994612&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69608489(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by TDK Corp filed Critical TDK Corp
Publication of DE69608489D1 publication Critical patent/DE69608489D1/de
Application granted granted Critical
Publication of DE69608489T2 publication Critical patent/DE69608489T2/de
Publication of DE69608489T3 publication Critical patent/DE69608489T3/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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/708—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer
    • G11B5/7085—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer non-magnetic abrasive particles
    • 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
    • Y10S428/90—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]
    • Y10T428/24967—Absolute thicknesses specified
    • Y10T428/24975—No layer or component greater than 5 mils thick
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined 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
    • 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
DE69608489T 1995-03-23 1996-03-21 Magnetisches Aufzeichnungsmedium Expired - Fee Related DE69608489T3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9029795 1995-03-23
JP7090297A JPH08263826A (ja) 1995-03-23 1995-03-23 磁気記録媒体

Publications (3)

Publication Number Publication Date
DE69608489D1 true DE69608489D1 (de) 2000-06-29
DE69608489T2 DE69608489T2 (de) 2001-01-25
DE69608489T3 DE69608489T3 (de) 2005-03-03

Family

ID=13994612

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69608489T Expired - Fee Related DE69608489T3 (de) 1995-03-23 1996-03-21 Magnetisches Aufzeichnungsmedium

Country Status (4)

Country Link
US (1) US5712028A (de)
EP (1) EP0734015B2 (de)
JP (1) JPH08263826A (de)
DE (1) DE69608489T3 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5922454A (en) * 1995-03-17 1999-07-13 Fuji Photo Film Co., Ltd. Magnetic recording medium
JP3698540B2 (ja) * 1998-01-23 2005-09-21 Ｔｄｋ株式会社 磁気記録媒体およびその製造方法
JPH11339252A (ja) * 1998-05-25 1999-12-10 Dowa Mining Co Ltd 塗布型磁気記録媒体の下層用粉末およびこれを用いた磁気記録媒体
JP3869209B2 (ja) * 1998-07-15 2007-01-17 東邦チタニウム株式会社 積層セラミックコンデンサの内部電極用金属ニッケル粉末の製造方法
US6652953B2 (en) * 1998-07-22 2003-11-25 Fuji Photo Film Co., Ltd. Magnetic recording medium
US6194058B1 (en) 1998-07-31 2001-02-27 Quantegy, Inc. Multi-layer magnetic recording medium, method and system of manufacture
EP1073041A1 (de) * 1999-07-28 2001-01-31 TDK Corporation Magnetisches Aufzeichnungsmedium
US6586086B1 (en) 1999-09-13 2003-07-01 Tdk Corporation Magnetic recording medium and making method
JP4090642B2 (ja) * 1999-09-13 2008-05-28 Ｔｄｋ株式会社 磁気記録媒体
JP2003059027A (ja) * 2001-08-13 2003-02-28 Sony Corp 磁気記録媒体
JP2003323710A (ja) * 2002-04-30 2003-11-14 Tdk Corp 磁気記録媒体
JP2004185713A (ja) * 2002-12-03 2004-07-02 Fuji Photo Film Co Ltd 磁気記録媒体
US6753192B1 (en) * 2003-02-20 2004-06-22 Academia Sinica Preparation of ultrathin magnetic layer on semiconductors
JP4116487B2 (ja) * 2003-03-31 2008-07-09 Ｔｄｋ株式会社 磁気記録テープ
JP4534574B2 (ja) * 2004-04-23 2010-09-01 富士フイルム株式会社 磁気記録媒体
JP2005350652A (ja) * 2004-05-12 2005-12-22 Matsushita Electric Ind Co Ltd 潤滑剤、ならびに磁気記録媒体および磁気記録媒体の製造方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6124022A (ja) † 1984-07-13 1986-02-01 Sony Corp 磁気記録媒体の製造方法
JPH03214417A (ja) † 1990-01-18 1991-09-19 Fuji Photo Film Co Ltd 磁気記録媒体
JPH04319523A (ja) † 1991-04-19 1992-11-10 Fuji Photo Film Co Ltd 磁気記録媒体及びその製造方法
SG42857A1 (en) † 1991-10-14 1997-10-17 Ibm A method of servowriting a magnetic disk drive
JPH05290361A (ja) * 1992-04-13 1993-11-05 Fuji Photo Film Co Ltd フレキシブル磁気ディスク及びその製造方法
JP2566096B2 (ja) † 1992-04-14 1996-12-25 富士写真フイルム株式会社 磁気記録媒体
WO1994008336A1 (en) * 1992-09-30 1994-04-14 Tdk Corporation Magnetic recording medium
JP3470154B2 (ja) * 1992-11-16 2003-11-25 コニカミノルタホールディングス株式会社 磁気記録媒体
US5458948A (en) † 1992-12-18 1995-10-17 Konica Corporation Magnetic recording medium
JP3106271B2 (ja) † 1993-01-13 2000-11-06 富士写真フイルム株式会社 磁気記録媒体
JP3669520B2 (ja) * 1995-03-17 2005-07-06 富士写真フイルム株式会社 磁気記録媒体

Also Published As

Publication number Publication date
DE69608489T3 (de) 2005-03-03
EP0734015B2 (de) 2004-08-25
JPH08263826A (ja) 1996-10-11
DE69608489T2 (de) 2001-01-25
US5712028A (en) 1998-01-27
EP0734015A2 (de) 1996-09-25
EP0734015A3 (de) 1997-04-09
EP0734015B1 (de) 2000-05-24

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8320 Willingness to grant licences declared (paragraph 23)
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee