DE3226011C2 - Magnetisches Aufzeichnungsmedium - Google Patents

Magnetisches Aufzeichnungsmedium

Info

Publication number
DE3226011C2
DE3226011C2 DE3226011A DE3226011A DE3226011C2 DE 3226011 C2 DE3226011 C2 DE 3226011C2 DE 3226011 A DE3226011 A DE 3226011A DE 3226011 A DE3226011 A DE 3226011A DE 3226011 C2 DE3226011 C2 DE 3226011C2
Authority
DE
Germany
Prior art keywords
magnetic
binder
recording medium
magnetic recording
groups
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
DE3226011A
Other languages
German (de)
English (en)
Other versions
DE3226011A1 (de
Inventor
Yoshinobu Ninomiya
Masashi Somezawa
Akira Hashimoto
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.)
Sony Corp
Original Assignee
Sony 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
Application filed by Sony Corp filed Critical Sony Corp
Publication of DE3226011A1 publication Critical patent/DE3226011A1/de
Application granted granted Critical
Publication of DE3226011C2 publication Critical patent/DE3226011C2/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
    • G11B5/702—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 bonding agent
    • G11B5/7021—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 bonding agent containing a polyurethane or a polyisocyanate
    • 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
    • Y10T428/29—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.]
    • Y10T428/2991—Coated
    • Y10T428/2998—Coated including synthetic resin or polymer
    • 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]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31609—Particulate metal or metal compound-containing

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
DE3226011A 1981-07-13 1982-07-12 Magnetisches Aufzeichnungsmedium Expired - Fee Related DE3226011C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56109129A JPS5812131A (ja) 1981-07-13 1981-07-13 磁気記録媒体

Publications (2)

Publication Number Publication Date
DE3226011A1 DE3226011A1 (de) 1983-01-20
DE3226011C2 true DE3226011C2 (de) 1995-10-05

Family

ID=14502304

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3226011A Expired - Fee Related DE3226011C2 (de) 1981-07-13 1982-07-12 Magnetisches Aufzeichnungsmedium

Country Status (5)

Country Link
US (1) US4521486A (enExample)
JP (1) JPS5812131A (enExample)
DE (1) DE3226011C2 (enExample)
FR (1) FR2509504A1 (enExample)
NL (1) NL190709C (enExample)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595424A (ja) * 1982-07-01 1984-01-12 Sony Corp 磁気記録媒体
DE3381028D1 (de) * 1982-07-21 1990-02-01 Basf Ag Magnetische aufzeichnungstraeger.
JPS6057527A (ja) * 1983-09-08 1985-04-03 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6070518A (ja) * 1983-09-28 1985-04-22 Toshiba Corp 磁気記録媒体
US4634633A (en) * 1983-12-15 1987-01-06 Sony Corporation Magnetic recording medium
JPS6126932A (ja) * 1984-07-17 1986-02-06 Tdk Corp 磁気記録媒体
JPS6148503A (ja) * 1984-08-15 1986-03-10 Tdk Corp 金属磁性粉末
US4842942A (en) * 1984-08-15 1989-06-27 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
JPS6190327A (ja) * 1984-10-09 1986-05-08 Sony Corp 磁気記録媒体
JPS61113125A (ja) * 1984-11-06 1986-05-31 Fuji Photo Film Co Ltd 磁気記録媒体
DE3602257C2 (de) * 1985-01-28 1995-06-14 Hitachi Maxell Magnetisches Aufzeichnungsmedium
EP0193084B1 (en) * 1985-03-01 1988-04-20 Sumitomo Bayer Urethane Co.Ltd: Magnetic recording medium, a process for preparing a magnetic recording medium and a binder composition therefor
JPS626429A (ja) * 1985-07-02 1987-01-13 Sony Corp 磁気記録媒体
JPS62103845A (ja) * 1985-07-12 1987-05-14 Fuji Photo Film Co Ltd 磁気記録媒体
US4666784A (en) * 1985-07-26 1987-05-19 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
US4707410A (en) * 1985-09-11 1987-11-17 Nippon Zeon Co., Ltd. Magnetic recording media
US4701372A (en) * 1985-09-18 1987-10-20 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
US4748084A (en) * 1985-11-11 1988-05-31 Nippon Zeon Co., Ltd. Magnetic recording medium
JPS62146433A (ja) * 1985-12-20 1987-06-30 Fuji Photo Film Co Ltd 磁気記録媒体
JPS62146432A (ja) * 1985-12-20 1987-06-30 Fuji Photo Film Co Ltd 磁気記録媒体
US5034271A (en) * 1986-02-28 1991-07-23 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPH0752504B2 (ja) * 1986-04-18 1995-06-05 富士写真フイルム株式会社 磁気記録媒体
JPS62248126A (ja) * 1986-04-19 1987-10-29 Fuji Photo Film Co Ltd 長尺状磁気記録媒体
JPH0743818B2 (ja) * 1986-05-07 1995-05-15 松下電器産業株式会社 磁気記録媒体
DE3718957A1 (de) * 1986-06-07 1987-12-10 Victor Company Of Japan Magnetische aufzeichnungsmedien, umfassend wenigstens in einer magnetischen aufzeichnungsschicht ein modifiziertes vinylchlorid-kunstharzbindemittel
US4732812A (en) * 1986-06-23 1988-03-22 Minnesota Mining And Manufacturing Company Magnetic recording medium
US4791021A (en) * 1986-10-13 1988-12-13 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPH07114013B2 (ja) * 1987-12-28 1995-12-06 富士写真フイルム株式会社 磁気記録媒体
US5185423A (en) * 1989-01-06 1993-02-09 Minnesota Mining And Manufacturing Company Method of making sulfonated hydroxy-functional polyurethane binder for magnetic recording media
US5071578A (en) * 1989-01-06 1991-12-10 Minnesota Mining And Manufacturing Company Sulfonated hydroxy-functional polyurethane binder for magnetic recording media
US5260136A (en) * 1989-01-06 1993-11-09 Minnesota Mining And Manufacturing Company Magnetic recording medium comprising a cured dispersion coating of sulfonated hydroxy-functional polyurethane binder and magnetizable pigment
US5066539A (en) * 1989-03-29 1991-11-19 Sony Corporation Magnetic recording medium wherein the magnetic layer contains components having specified polar groups, particle diameters and surface areas or which are in specific relative ratios
JPH02302929A (ja) * 1989-05-17 1990-12-14 Fuji Photo Film Co Ltd 磁気記録媒体
EP0626678B1 (en) * 1993-03-22 1998-09-30 Union Carbide Chemicals & Plastics Technology Corporation Magnetic recording media
US5371166A (en) * 1993-12-22 1994-12-06 The B. F. Goodrich Company Polyurethane composition for use as a dispersing binder
JP2004046952A (ja) * 2002-07-10 2004-02-12 Sony Corp 磁気記録媒体
US7201978B2 (en) * 2003-11-27 2007-04-10 Tdk Corporation Magnetic recording medium

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1311588A (fr) * 1962-01-03 1962-12-07 Agfa Ag Ruban enregistreur magnétique pour l'enregistrement du son, des images et des impulsions
FR1452994A (fr) * 1965-11-02 1966-04-15 Eastman Kodak Co Nouvelle composition de couchage magnétisable et procédé de préparation de bandes pour enregistrement magnétique
DD96601A1 (enExample) * 1971-09-27 1973-03-20
US4004997A (en) * 1972-01-30 1977-01-25 Seiko Shimada Process of curing a polymerizable composition containing a magnetized powered ferromagnetic material with radioactive rays
DE2442762C2 (de) * 1974-09-06 1983-02-24 Basf Ag, 6700 Ludwigshafen Schichtmagnetogrammträger mit Polyurethanelastomer-Bindemitteln in der Magnetschicht
JPS5836410B2 (ja) * 1978-05-12 1983-08-09 ティーディーケイ株式会社 磁気記録媒体
DE2914659A1 (de) * 1979-04-11 1980-10-23 Agfa Gevaert Ag Magnetisches speichermedium und verfahren zu dessen herstellung
GB2054622B (en) * 1979-07-12 1983-04-07 Tdk Electronics Co Ltd Magnetic recording medium
JPS5753824A (en) * 1980-09-12 1982-03-31 Fuji Photo Film Co Ltd Magnetic recording medium

Also Published As

Publication number Publication date
NL8202831A (nl) 1983-02-01
US4521486A (en) 1985-06-04
JPH0572008B2 (enExample) 1993-10-08
NL190709C (nl) 1994-07-01
JPS5812131A (ja) 1983-01-24
FR2509504B1 (enExample) 1985-02-15
FR2509504A1 (fr) 1983-01-14
DE3226011A1 (de) 1983-01-20
NL190709B (nl) 1994-02-01

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN

8339 Ceased/non-payment of the annual fee