DE69118671D1 - Magnetischer Aufzeichnungsträger - Google Patents

Magnetischer Aufzeichnungsträger

Info

Publication number
DE69118671D1
DE69118671D1 DE69118671T DE69118671T DE69118671D1 DE 69118671 D1 DE69118671 D1 DE 69118671D1 DE 69118671 T DE69118671 T DE 69118671T DE 69118671 T DE69118671 T DE 69118671T DE 69118671 D1 DE69118671 D1 DE 69118671D1
Authority
DE
Germany
Prior art keywords
record carrier
magnetic record
magnetic
carrier
record
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.)
Revoked
Application number
DE69118671T
Other languages
English (en)
Other versions
DE69118671T2 (de
Inventor
Kunitsuna Sasaki
Narita Goto
Katsuyuki Takeda
Nobuyuki Sekiguchi
Hideki Takahashi
Ryousuke Isobe
Takahiro Mori
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=18525631&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69118671(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Application granted granted Critical
Publication of DE69118671D1 publication Critical patent/DE69118671D1/de
Publication of DE69118671T2 publication Critical patent/DE69118671T2/de
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • 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
    • G11B5/714—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 the dimension of the magnetic 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
    • G11B5/68—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
    • G11B5/716—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 two or more magnetic layers
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
DE69118671T 1990-12-28 1991-12-24 Magnetischer Aufzeichnungsträger Revoked DE69118671T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2417542A JPH04251434A (ja) 1990-12-28 1990-12-28 磁気記録媒体

Publications (2)

Publication Number Publication Date
DE69118671D1 true DE69118671D1 (de) 1996-05-15
DE69118671T2 DE69118671T2 (de) 1996-10-31

Family

ID=18525631

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69118671T Revoked DE69118671T2 (de) 1990-12-28 1991-12-24 Magnetischer Aufzeichnungsträger

Country Status (4)

Country Link
EP (1) EP0493114B1 (de)
JP (1) JPH04251434A (de)
KR (1) KR100288348B1 (de)
DE (1) DE69118671T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0566378B2 (de) † 1992-04-14 2001-05-09 Konica Corporation Magnetisches Aufzeichnungsmedium
JP3474706B2 (ja) * 1996-06-10 2003-12-08 富士写真フイルム株式会社 磁気ディスク及び磁気記録再生方法
DE19838799A1 (de) * 1998-08-26 2000-03-02 Emtec Magnetics Gmbh Magnetischer Aufzeichnungsträger mit hoher Aufzeichnungsdichte
US6746508B1 (en) * 1999-10-22 2004-06-08 Chrysalis Technologies Incorporated Nanosized intermetallic powders

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4851289A (en) * 1987-01-30 1989-07-25 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPH0690786B2 (ja) 1987-01-30 1994-11-14 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
EP0493114B1 (de) 1996-04-10
JPH04251434A (ja) 1992-09-07
KR920013284A (ko) 1992-07-28
DE69118671T2 (de) 1996-10-31
EP0493114A2 (de) 1992-07-01
EP0493114A3 (en) 1993-04-21
KR100288348B1 (ko) 2001-05-02

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation