JPH0533448B2 - - Google Patents

Info

Publication number
JPH0533448B2
JPH0533448B2 JP58184403A JP18440383A JPH0533448B2 JP H0533448 B2 JPH0533448 B2 JP H0533448B2 JP 58184403 A JP58184403 A JP 58184403A JP 18440383 A JP18440383 A JP 18440383A JP H0533448 B2 JPH0533448 B2 JP H0533448B2
Authority
JP
Japan
Prior art keywords
magnetic
back coat
weight
polyurethane resin
coat layer
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
JP58184403A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6079522A (ja
Inventor
Koji Kaneda
Masayoshi Sugyama
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
Priority to JP58184403A priority Critical patent/JPS6079522A/ja
Priority to US06/656,227 priority patent/US4612244A/en
Priority to DE3436262A priority patent/DE3436262A1/de
Publication of JPS6079522A publication Critical patent/JPS6079522A/ja
Publication of JPH0533448B2 publication Critical patent/JPH0533448B2/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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
    • G11B5/7356—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
    • G11B5/7358—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2 specially adapted for achieving a specific property, e.g. average roughness [Ra]
    • 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
    • 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
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
    • 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.]
    • 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.]
    • Y10T428/31565—Next to polyester [polyethylene terephthalate, 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]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31598—Next to silicon-containing [silicone, cement, etc.] layer
    • 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
    • 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]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]

Landscapes

  • Paints Or Removers (AREA)
  • Lubricants (AREA)
  • Magnetic Record Carriers (AREA)
JP58184403A 1983-10-04 1983-10-04 磁気記録媒体 Granted JPS6079522A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP58184403A JPS6079522A (ja) 1983-10-04 1983-10-04 磁気記録媒体
US06/656,227 US4612244A (en) 1983-10-04 1984-10-01 Magnetic recording medium
DE3436262A DE3436262A1 (de) 1983-10-04 1984-10-03 Magnetisches aufzeichnungsmedium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58184403A JPS6079522A (ja) 1983-10-04 1983-10-04 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS6079522A JPS6079522A (ja) 1985-05-07
JPH0533448B2 true JPH0533448B2 (OSRAM) 1993-05-19

Family

ID=16152554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58184403A Granted JPS6079522A (ja) 1983-10-04 1983-10-04 磁気記録媒体

Country Status (3)

Country Link
US (1) US4612244A (OSRAM)
JP (1) JPS6079522A (OSRAM)
DE (1) DE3436262A1 (OSRAM)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60160022A (ja) * 1984-01-31 1985-08-21 Tdk Corp 磁気記録媒体
JPH0650563B2 (ja) * 1984-07-24 1994-06-29 ティーディーケイ株式会社 磁気記録媒体
JPS6159623A (ja) * 1984-08-29 1986-03-27 Hitachi Maxell Ltd 磁気記録媒体
US4798755A (en) * 1985-05-01 1989-01-17 Fuji Photo Film Co., Ltd. Magnetic recording medium
CA1297738C (en) * 1986-01-09 1992-03-24 Hirofumi Kondo Magnetic recording medium
JPS62227745A (ja) * 1986-03-31 1987-10-06 ダイアホイルヘキスト株式会社 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
US4868046A (en) * 1986-06-07 1989-09-19 Victor Company Of Japan, Ltd. Magnetic recording mediums comprising a modified vinyl chloride resin binder in at least a magnetic recording layer
JPS63229612A (ja) * 1987-03-19 1988-09-26 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0695380B2 (ja) * 1987-03-19 1994-11-24 富士写真フイルム株式会社 磁気記録媒体
US5153063A (en) * 1987-04-22 1992-10-06 Fuji Photo Film Co., Ltd. Magnetic recording medium having a vinyl-chloride resin and a urethane resin binder system each of which resins contain three percent or less of a low molecular weight resin fraction
JPH0644345B2 (ja) * 1987-04-30 1994-06-08 富士写真フイルム株式会社 磁気記録媒体の製造方法
DE3714783A1 (de) * 1987-05-04 1988-11-24 Rainer Kuenstler Druckfarbe und verwendung derselben
JPH0727629B2 (ja) * 1987-07-08 1995-03-29 富士写真フイルム株式会社 磁気記録媒体
JPH0393032A (ja) * 1989-09-04 1991-04-18 Kao Corp 磁気記録媒体
US5096627A (en) * 1990-09-17 1992-03-17 Minnesota Mining And Manufacturing Company Method of molding optical recording drums
DE4216847A1 (de) * 1992-05-21 1993-11-25 Basf Magnetics Gmbh Flexible magnetische Aufzeichnungsträger mit Rückschicht
EP0626678B1 (en) * 1993-03-22 1998-09-30 Union Carbide Chemicals & Plastics Technology Corporation Magnetic recording media
US5498685A (en) * 1993-04-27 1996-03-12 Minnesota Mining And Manufacturing Company Carboxylic-acid functional polyurethane polymers and their use in magnetic recording media
JP3405812B2 (ja) * 1993-05-14 2003-05-12 ティーディーケイ株式会社 磁気記録媒体
GB9320711D0 (en) * 1993-10-07 1993-11-24 Minnesota Mining & Mfg Binder for magnetic media
US5705253A (en) * 1994-06-13 1998-01-06 Minnesota Mining And Manufacturing Company Video recording tapes suitable for high speed contact duplication
US5759666A (en) * 1995-12-21 1998-06-02 Minnesota Mining And Manufacturing Company Carboxylic acid functional polyurethane polymers and blends thereof used in magnetic recording media
US5512651A (en) * 1994-07-29 1996-04-30 Minnesota Mining And Manufacturing Company Strong carboxylic acid functional polyurethane polymers and blends thereof used in magnetic recording media
US5501903A (en) * 1994-07-29 1996-03-26 Minnesota Mining And Manufacturing Company Magnetic recording medium having a binder system including a non halogenated vinyl polymer and a polyurethane polymer each with specified pendant groups
US5674604A (en) * 1995-03-31 1997-10-07 Minnesota Mining And Manufacturing Company Magnetic recording medium comprising magnetic particles, binder, and a non halogenated vinyl oligomer dispersant
US6139982A (en) * 1998-11-06 2000-10-31 Imation Corp. Magnetic recording medium having a binder system including a polyurethane polymer having both phosphonate and quaternary ammonium pendant groups

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841565B2 (ja) * 1978-06-01 1983-09-13 東洋紡績株式会社 磁気記録媒体
US4152485A (en) * 1977-08-05 1979-05-01 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
JPS5841564B2 (ja) * 1978-05-19 1983-09-13 東洋紡績株式会社 磁気記録媒体
JPS5528507A (en) * 1978-08-16 1980-02-29 Tdk Corp Magnetic recording tape
GB2054622B (en) * 1979-07-12 1983-04-07 Tdk Electronics Co Ltd Magnetic recording medium
US4328935A (en) * 1980-06-12 1982-05-11 Minnesota Mining And Manufacturing Company Flexible magnetic recording tape having low-friction backside coating
JPS5758227A (en) * 1980-09-25 1982-04-07 Tdk Corp Magnetic recording medium
JPS57152540A (en) * 1981-03-18 1982-09-20 Hitachi Maxell Ltd Magnetic recording medium
JPS57169929A (en) * 1981-04-13 1982-10-19 Tdk Corp Magnetic recording medium and its manufacture
JPS595423A (ja) * 1982-07-01 1984-01-12 Sony Corp 磁気記録媒体
JPS5837840A (ja) * 1982-07-20 1983-03-05 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6059527A (ja) * 1983-09-12 1985-04-05 Tdk Corp 磁気記録媒体

Also Published As

Publication number Publication date
US4612244A (en) 1986-09-16
DE3436262A1 (de) 1985-05-02
JPS6079522A (ja) 1985-05-07

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