JPH0232687B2 - - Google Patents

Info

Publication number
JPH0232687B2
JPH0232687B2 JP55046312A JP4631280A JPH0232687B2 JP H0232687 B2 JPH0232687 B2 JP H0232687B2 JP 55046312 A JP55046312 A JP 55046312A JP 4631280 A JP4631280 A JP 4631280A JP H0232687 B2 JPH0232687 B2 JP H0232687B2
Authority
JP
Japan
Prior art keywords
magnetic
pigment
binder
dispersion
water
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 - Lifetime
Application number
JP55046312A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55139631A (en
Inventor
Kooreru Rooberuto
Shirufuaruto Karurukurisuteiaan
Kooberu Hainritsuhi
Nitsupe Burukuharuto
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert 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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of JPS55139631A publication Critical patent/JPS55139631A/ja
Publication of JPH0232687B2 publication Critical patent/JPH0232687B2/ja
Granted 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
    • 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
    • G11B5/7013—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 dispersing agent
    • 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
    • Y10T428/254—Polymeric or resinous material
    • 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
    • Y10T428/31504—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)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP4631280A 1979-04-11 1980-04-10 Magnetic record medium and method of producing same Granted JPS55139631A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792914659 DE2914659A1 (de) 1979-04-11 1979-04-11 Magnetisches speichermedium und verfahren zu dessen herstellung

Publications (2)

Publication Number Publication Date
JPS55139631A JPS55139631A (en) 1980-10-31
JPH0232687B2 true JPH0232687B2 (enExample) 1990-07-23

Family

ID=6068065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4631280A Granted JPS55139631A (en) 1979-04-11 1980-04-10 Magnetic record medium and method of producing same

Country Status (4)

Country Link
US (1) US4404253A (enExample)
EP (1) EP0017834B1 (enExample)
JP (1) JPS55139631A (enExample)
DE (2) DE2914659A1 (enExample)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920334A1 (de) * 1979-05-19 1980-12-04 Basf Ag Magnetische aufzeichnungstraeger
DE3064620D1 (en) * 1979-05-28 1983-09-29 Hitachi Maxell Magnetic recording medium and process for its preparation
JPS5812131A (ja) * 1981-07-13 1983-01-24 Sony Corp 磁気記録媒体
JPS5815573A (ja) * 1981-07-22 1983-01-28 Toyo Ink Mfg Co Ltd 放射線硬化性磁性塗料および該塗料を用いて得られた磁気記録媒体
JPS5864627A (ja) * 1981-10-15 1983-04-18 Sony Corp 磁気記録媒体
US4554214A (en) * 1982-01-08 1985-11-19 Seikoh Chemicals Co., Ltd. Casting coating
JPS595424A (ja) * 1982-07-01 1984-01-12 Sony Corp 磁気記録媒体
JPS595423A (ja) * 1982-07-01 1984-01-12 Sony Corp 磁気記録媒体
US4454282A (en) * 1983-03-21 1984-06-12 International Business Machines Corporation Water-based chromium dioxide magnetic recording media
GB2188641B (en) * 1983-04-22 1988-02-10 Ici Plc Article having magnetic properties and production thereof
JPS6057527A (ja) * 1983-09-08 1985-04-03 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6095722A (ja) * 1983-10-28 1985-05-29 Sony Corp 磁気記録媒体
JPS6142733A (ja) * 1984-08-07 1986-03-01 Konishiroku Photo Ind Co Ltd 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
JPS62501661A (ja) * 1985-02-06 1987-07-02 メモレックス・コ−ポレ−ション 水性熱硬化性磁気被覆組成物および製造方法
JPH0715738B2 (ja) * 1985-02-27 1995-02-22 花王株式会社 磁気記録媒体
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
US4668415A (en) * 1986-02-12 1987-05-26 E. I. Du Pont De Nemours And Company Facilitation of orientation of thermotropic polymers in a magnetic field
NL8600421A (nl) * 1986-02-20 1987-09-16 Pd Magnetics Bv Magnetisch registratie-element.
JPH0743818B2 (ja) * 1986-05-07 1995-05-15 松下電器産業株式会社 磁気記録媒体
JPH0785305B2 (ja) * 1986-08-05 1995-09-13 富士写真フイルム株式会社 磁気記録媒体
DE3629606A1 (de) * 1986-08-30 1988-03-03 Agfa Gevaert Ag Verfahren zur herstellung von magnetischen aufzeichnungstraegern
US5188891A (en) * 1987-12-25 1993-02-23 Diafoil Company, Limited Magnetic recording medium comprising a polyester film substrate, a magnetic coating and a specified back coat layer
US5064720A (en) * 1988-08-25 1991-11-12 Konica Corporation Magnetic recording medium containing a polyurethane binder resin having a betaine group in the form of an intermolecular salt
JPH02302929A (ja) * 1989-05-17 1990-12-14 Fuji Photo Film Co Ltd 磁気記録媒体
ZA933185B (en) 1992-05-08 1994-05-23 Dick Co Ab Encapsulated magnetic particles pigments and carbon black compositions and methods related thereto
US5371166A (en) * 1993-12-22 1994-12-06 The B. F. Goodrich Company Polyurethane composition for use as a dispersing binder
EP0681288B1 (en) * 1994-04-18 2003-06-11 Eastman Kodak Company Photographic elemet with a transparent magnetic film
US5531913A (en) * 1995-03-10 1996-07-02 Eastman Kodak Company Haze-free transparent film-forming aqueous coating compositions for magnetic recording layers
US5707791A (en) * 1995-01-18 1998-01-13 Konica Corporation Silver halide photographic light-sensitive material
JPH08259859A (ja) * 1995-03-24 1996-10-08 Dainippon Ink & Chem Inc 磁性塗料組成物及びその製造方法
US6051060A (en) * 1997-12-04 2000-04-18 Marconi Data Systems, Inc. Method of making pigment with increased hydrophilic properties
DE19811791A1 (de) * 1998-03-18 1999-09-23 Borchers Gmbh Wäßrige Dispersionen mit einer speziellen Dispergiermittelkombination
US6342561B1 (en) * 1999-11-17 2002-01-29 3M Innovative Properties Company Organic particulate-filled adhesive

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096053B (de) * 1958-10-17 1960-12-29 Basf Ag Verfahren zur Herstellung von Tontraegern
US3023123A (en) 1958-12-02 1962-02-27 Burroughs Corp Forming stripes of magnetic material
FR1499121A (enExample) 1964-12-08 1968-01-12
CH1524468D (enExample) * 1967-10-13 1900-01-01
US3725285A (en) * 1970-06-24 1973-04-03 Ibm Magnetic coating compositions
US4000336A (en) * 1971-12-16 1976-12-28 Badische Anilin- & Soda-Fabrik Aktiengesellschaft Production of magnetic recording media
DE2250382C3 (de) 1972-10-13 1978-03-30 Agfa-Gevaert Ag, 5090 Leverkusen Magnetisches Speichermedium
JPS5716640B2 (enExample) 1973-06-30 1982-04-06
JPS50102630A (enExample) 1974-01-17 1975-08-14
DD116248A1 (enExample) 1974-11-08 1975-11-12
DE2457972C3 (de) * 1974-12-07 1980-07-31 Akzo Gmbh, 5600 Wuppertal Anionische Polyurethane
JPS5180998A (enExample) * 1975-01-14 1976-07-15 Fuji Photo Film Co Ltd
JPS5816246B2 (ja) * 1975-12-17 1983-03-30 日立マクセル株式会社 ジキキロクタイ
JPS5274310A (en) * 1975-12-17 1977-06-22 Hitachi Maxell Magnetic recording material
JPS5816245B2 (ja) * 1975-12-17 1983-03-30 日立マクセル株式会社 ジキキロクタイ
US4152485A (en) * 1977-08-05 1979-05-01 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
US4263188A (en) * 1979-05-23 1981-04-21 Verbatim Corporation Aqueous coating composition and method

Also Published As

Publication number Publication date
JPS55139631A (en) 1980-10-31
DE2914659A1 (de) 1980-10-23
US4404253A (en) 1983-09-13
EP0017834A1 (de) 1980-10-29
EP0017834B1 (de) 1982-05-26
DE3060464D1 (en) 1982-07-15

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