DE3788295D1 - Magnetischer Aufzeichnungsträger. - Google Patents

Magnetischer Aufzeichnungsträger.

Info

Publication number
DE3788295D1
DE3788295D1 DE87103988T DE3788295T DE3788295D1 DE 3788295 D1 DE3788295 D1 DE 3788295D1 DE 87103988 T DE87103988 T DE 87103988T DE 3788295 T DE3788295 T DE 3788295T DE 3788295 D1 DE3788295 D1 DE 3788295D1
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.)
Expired - Fee Related
Application number
DE87103988T
Other languages
English (en)
Other versions
DE3788295T2 (de
Inventor
Akira Miyake
Mikio Kishimoto
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Application granted granted Critical
Publication of DE3788295D1 publication Critical patent/DE3788295D1/de
Publication of DE3788295T2 publication Critical patent/DE3788295T2/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
    • G11B5/706—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 composition of the magnetic 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
    • G11B5/706—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 composition of the magnetic material
    • G11B5/70626—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 composition of the magnetic material containing non-metallic substances
    • G11B5/70642—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 composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • 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
    • 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
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
DE3788295T 1986-03-20 1987-03-18 Magnetischer Aufzeichnungsträger. Expired - Fee Related DE3788295T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61063172A JPS62219324A (ja) 1986-03-20 1986-03-20 磁気記録媒体

Publications (2)

Publication Number Publication Date
DE3788295D1 true DE3788295D1 (de) 1994-01-13
DE3788295T2 DE3788295T2 (de) 1994-06-16

Family

ID=13221573

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3788295T Expired - Fee Related DE3788295T2 (de) 1986-03-20 1987-03-18 Magnetischer Aufzeichnungsträger.

Country Status (5)

Country Link
US (1) US4792483A (de)
EP (1) EP0238068B1 (de)
JP (1) JPS62219324A (de)
KR (1) KR870009341A (de)
DE (1) DE3788295T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0792907B2 (ja) * 1986-05-09 1995-10-09 日立マクセル株式会社 磁気記録媒体
JPS63229616A (ja) * 1987-03-18 1988-09-26 Toshiba Corp 磁気記録媒体
US5126215A (en) * 1988-04-13 1992-06-30 Fuji Photo Film Co., Ltd. Magnetic recording medium having a surface with pores of specified average inlet diameter and wide pore size distribution controlled by calender treatment
JPH01300420A (ja) * 1988-05-30 1989-12-04 Hitachi Maxell Ltd 磁気記録媒体
KR900002242A (ko) * 1988-07-14 1990-02-28 나가이 아쯔시 자기디스크 카트리지
JP6635216B1 (ja) 2019-08-16 2020-01-22 ソニー株式会社 磁気記録媒体、磁気記録再生装置および磁気記録媒体カートリッジ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113859A1 (de) * 1980-04-07 1982-01-28 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa Magnetisches aufzeichnungsmaterial
JPS58203625A (ja) * 1982-05-24 1983-11-28 Toshiba Corp 磁気記録媒体
JPS6070518A (ja) * 1983-09-28 1985-04-22 Toshiba Corp 磁気記録媒体
JPS60119625A (ja) * 1983-12-01 1985-06-27 Fuji Photo Film Co Ltd 磁気記録媒体
JPS60143429A (ja) * 1983-12-29 1985-07-29 Fuji Photo Film Co Ltd 磁気記録媒体
US4626463A (en) * 1984-09-26 1986-12-02 Minnesota Mining And Manufacturing Company Diskette having wear-resistant magnetizable layer
US4567096A (en) * 1985-03-21 1986-01-28 Piltingsrud Douglas H Hydrated alumina binder system

Also Published As

Publication number Publication date
EP0238068B1 (de) 1993-12-01
KR870009341A (ko) 1987-10-26
JPS62219324A (ja) 1987-09-26
DE3788295T2 (de) 1994-06-16
EP0238068A3 (en) 1989-08-30
US4792483A (en) 1988-12-20
EP0238068A2 (de) 1987-09-23

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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