DE3789092D1 - Magnetischer Aufzeichnungsträger mit hoher Abriebfestigkeit. - Google Patents

Magnetischer Aufzeichnungsträger mit hoher Abriebfestigkeit.

Info

Publication number
DE3789092D1
DE3789092D1 DE87117740T DE3789092T DE3789092D1 DE 3789092 D1 DE3789092 D1 DE 3789092D1 DE 87117740 T DE87117740 T DE 87117740T DE 3789092 T DE3789092 T DE 3789092T DE 3789092 D1 DE3789092 D1 DE 3789092D1
Authority
DE
Germany
Prior art keywords
recording medium
magnetic recording
abrasion resistance
high abrasion
resistance
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
DE87117740T
Other languages
English (en)
Other versions
DE3789092T2 (de
Inventor
Noboru Koyama
Shu Ishiguro
Ryosuke Isobe
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=26429030&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3789092(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP61288272A external-priority patent/JPS63140421A/ja
Priority claimed from JP62087777A external-priority patent/JPS63253530A/ja
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Publication of DE3789092D1 publication Critical patent/DE3789092D1/de
Application granted granted Critical
Publication of DE3789092T2 publication Critical patent/DE3789092T2/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
    • 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
    • G11B5/708—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
    • 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
    • G11B5/71—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 lubricant
DE19873789092 1986-12-02 1987-12-01 Magnetischer Aufzeichnungsträger mit hoher Abriebfestigkeit. Revoked DE3789092T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61288272A JPS63140421A (ja) 1986-12-02 1986-12-02 走行耐久性磁気記録媒体
JP62087777A JPS63253530A (ja) 1987-04-09 1987-04-09 磁気記録媒体

Publications (2)

Publication Number Publication Date
DE3789092D1 true DE3789092D1 (de) 1994-03-24
DE3789092T2 DE3789092T2 (de) 1994-05-19

Family

ID=26429030

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873789092 Revoked DE3789092T2 (de) 1986-12-02 1987-12-01 Magnetischer Aufzeichnungsträger mit hoher Abriebfestigkeit.

Country Status (2)

Country Link
EP (1) EP0270070B1 (de)
DE (1) DE3789092T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908425C1 (en) * 1989-03-15 1990-08-09 Agfa-Gevaert Ag, 5090 Leverkusen, De Magnetic recording carrier
JP2817070B2 (ja) * 1991-09-06 1998-10-27 富士写真フイルム株式会社 磁気記録媒体

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130435A (ja) * 1982-01-29 1983-08-03 Fuji Photo Film Co Ltd 磁気記録媒体

Also Published As

Publication number Publication date
EP0270070B1 (de) 1994-02-16
EP0270070A2 (de) 1988-06-08
DE3789092T2 (de) 1994-05-19
EP0270070A3 (en) 1990-01-17

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Legal Events

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