IT997597B - Procedimento per la fabbricazione di dischi per registrazione magne tica - Google Patents

Procedimento per la fabbricazione di dischi per registrazione magne tica

Info

Publication number
IT997597B
IT997597B IT53607/73A IT5360773A IT997597B IT 997597 B IT997597 B IT 997597B IT 53607/73 A IT53607/73 A IT 53607/73A IT 5360773 A IT5360773 A IT 5360773A IT 997597 B IT997597 B IT 997597B
Authority
IT
Italy
Prior art keywords
procedure
magne tic
manufacturing discs
recording
tic recording
Prior art date
Application number
IT53607/73A
Other languages
English (en)
Original Assignee
Basf Ag
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 Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of IT997597B publication Critical patent/IT997597B/it

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
    • 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
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31511—Of epoxy ether
    • Y10T428/31529—Next to metal
IT53607/73A 1972-11-10 1973-11-09 Procedimento per la fabbricazione di dischi per registrazione magne tica IT997597B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2255028A DE2255028A1 (de) 1972-11-10 1972-11-10 Verfahren zur herstellung von magnetischen aufzeichnungsplatten

Publications (1)

Publication Number Publication Date
IT997597B true IT997597B (it) 1975-12-30

Family

ID=5861339

Family Applications (1)

Application Number Title Priority Date Filing Date
IT53607/73A IT997597B (it) 1972-11-10 1973-11-09 Procedimento per la fabbricazione di dischi per registrazione magne tica

Country Status (9)

Country Link
US (1) US3959553A (it)
JP (1) JPS50804A (it)
BE (1) BE807177A (it)
CA (1) CA1002822A (it)
DE (1) DE2255028A1 (it)
FR (1) FR2206549B1 (it)
GB (1) GB1448594A (it)
IT (1) IT997597B (it)
NL (1) NL7315332A (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2451276C2 (de) * 1974-10-29 1982-12-30 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung starrer magnetischer Aufzeichnungsträger
US4254189A (en) * 1979-07-05 1981-03-03 Memorex Corporation Disc having substrate, intermediate layer and magnetically sensitive layer wherein intermediate layer has melting point less than annealing temperature of substrate but higher than processing temperature of magnetically sensitive layer
JPS5613525A (en) * 1979-07-16 1981-02-09 Tdk Corp Magnetic recording medium
JPS5712421A (en) * 1980-06-23 1982-01-22 Tdk Corp Magnetic recording medium
JPS57179945A (en) * 1981-04-28 1982-11-05 Fuji Photo Film Co Ltd Magnetic recording medium
US4540618A (en) * 1982-08-12 1985-09-10 Matsushita Electric Industrial Co., Ltd. Magnetic recording medium
US4587157A (en) * 1982-10-25 1986-05-06 Verbatim Corp. Wear resisting undercoat for thin film magnetic recording media
EP0126790B1 (de) * 1983-05-27 1986-09-03 Ibm Deutschland Gmbh Zusammengesetzte Magnetplatte
JPH0618067B2 (ja) * 1984-02-13 1994-03-09 日本ビクター株式会社 磁気記録媒体
JPS6148123A (ja) * 1984-08-15 1986-03-08 Sumitomo Special Metals Co Ltd 記録デイスク用基板の製造方法
JPS62120629A (ja) * 1985-11-20 1987-06-01 Sumitomo Special Metals Co Ltd 磁気ディスク及びその製造方法
US5256481A (en) * 1986-03-20 1993-10-26 Hitachi Maxell, Ltd. Magnetic recording medium
US4985295A (en) * 1987-01-23 1991-01-15 Hitachi, Ltd. Magnetic recording medium and method for producing the same
US5180609A (en) * 1988-03-09 1993-01-19 Kabushiki Kaisha Toshiba Method of forming modified portion and magnetic recording member using this method
JP2563711B2 (ja) * 1991-01-24 1996-12-18 松下電器産業株式会社 磁気テープ
US5512363A (en) * 1992-02-13 1996-04-30 Konica Corporation Magnetic recording medium having a magnetic layer containing magnetic powder and an underlayer containing two kinds of non magnetic powder
US9105294B2 (en) 2010-03-16 2015-08-11 Sony Corporation Composite magnetic recording media
US20110244114A1 (en) * 2010-04-02 2011-10-06 Imation Corp. Barium Ferrite Magnetic Storage Media with Uniform Magnetic Particle Distributions
US20110244118A1 (en) * 2010-04-02 2011-10-06 Imation Corp. Method of Forming Barium Ferrite Magnetic Storage Media
US9324354B2 (en) 2010-04-02 2016-04-26 Sony Corporation Barium ferrite magnetic storage media

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819186A (en) * 1956-01-19 1958-01-07 Reeves Soundcraft Corp Magnetic recording tape
US3055770A (en) * 1960-12-23 1962-09-25 Ibm Thin magnetic films
CH506155A (de) * 1969-04-14 1971-04-15 Ibm Magnetische Datenspeichervorrichtung
DE1929171C3 (de) * 1969-06-09 1979-06-07 Basf Ag, 6700 Ludwigshafen Schichtmagnetogrammträger
JPS4815009B1 (it) * 1969-11-26 1973-05-11
GB1371095A (en) * 1970-06-09 1974-10-23 Agfa Gevaert Surface treatment of polyester material

Also Published As

Publication number Publication date
NL7315332A (it) 1974-05-14
CA1002822A (en) 1977-01-04
JPS50804A (it) 1975-01-07
BE807177A (fr) 1974-05-13
DE2255028A1 (de) 1974-06-12
US3959553A (en) 1976-05-25
GB1448594A (en) 1976-09-08
FR2206549B1 (it) 1979-02-23
FR2206549A1 (it) 1974-06-07

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