JPS5792422A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5792422A
JPS5792422A JP16547380A JP16547380A JPS5792422A JP S5792422 A JPS5792422 A JP S5792422A JP 16547380 A JP16547380 A JP 16547380A JP 16547380 A JP16547380 A JP 16547380A JP S5792422 A JPS5792422 A JP S5792422A
Authority
JP
Japan
Prior art keywords
hydrophilic group
magnetic
recording medium
magnetic recording
molecular weight
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.)
Granted
Application number
JP16547380A
Other languages
Japanese (ja)
Other versions
JPS6346886B2 (en
Inventor
Masashi Somezawa
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 JP16547380A priority Critical patent/JPS5792422A/en
Publication of JPS5792422A publication Critical patent/JPS5792422A/en
Publication of JPS6346886B2 publication Critical patent/JPS6346886B2/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

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To improve the dispersibility of magnetic powder by providing a magnetic layer which contains polyurethane resin having >=1 hydrophilic group selected among specific hydrophilic groups and also having molecular weight within specific range for one hydrophilic group. CONSTITUTION:Polyurethane resin or polyester resin which has >=1 hydrophilic group selected among groups shown by the formula and 200-50,000 molecular weight per hydrophilic group is contained as a binding agent in a magnetic layer to obtain a magnetic recording medium. Using the said resin disperses magnetic powder uniformly, obtaining a magnetic tape, etc., which has superior electromagnetic characteristics, and excellent wear resistance and damp resistance, etc.
JP16547380A 1980-11-25 1980-11-25 Magnetic recording medium Granted JPS5792422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16547380A JPS5792422A (en) 1980-11-25 1980-11-25 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16547380A JPS5792422A (en) 1980-11-25 1980-11-25 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5792422A true JPS5792422A (en) 1982-06-09
JPS6346886B2 JPS6346886B2 (en) 1988-09-19

Family

ID=15813071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16547380A Granted JPS5792422A (en) 1980-11-25 1980-11-25 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5792422A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595424A (en) * 1982-07-01 1984-01-12 Sony Corp Magnetic recording medium
JPS598127A (en) * 1982-07-05 1984-01-17 Sony Corp Magnetic recording medium
WO1984000240A1 (en) * 1982-07-01 1984-01-19 Sony Corp Magnetic recording medium
JPS5940320A (en) * 1982-08-30 1984-03-06 Sony Corp Magnetic recording medium
JPS5979427A (en) * 1982-10-29 1984-05-08 Sony Corp Magnetic recording medium
JPS6015473A (en) * 1983-07-06 1985-01-26 Toyo Tire & Rubber Co Ltd Magnetic paint
JPS6159623A (en) * 1984-08-29 1986-03-27 Hitachi Maxell Ltd Magnetic recording medium
US5424132A (en) * 1992-10-12 1995-06-13 Basf Magnetics Gmbh Magnetic recording media
EP0691644A1 (en) 1994-07-09 1996-01-10 BASF Magnetics GmbH Magnetic recording medium
US5543226A (en) * 1991-12-18 1996-08-06 Basf Magnetics Gmbh Magnetic recording media
EP0742238A1 (en) * 1995-05-11 1996-11-13 BASF Magnetics GmbH Polymer compositions suitable for use as dispersing resins
US6132880A (en) * 1997-08-12 2000-10-17 Emtec Magnetics Gmbh EMTEC magnetics GmbH

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840889A (en) * 1971-09-27 1973-06-15
JPS50112004A (en) * 1974-02-12 1975-09-03
JPS523815A (en) * 1975-06-24 1977-01-12 Yoshinari Hirosaki A process for preparing a health promotive agent for men and cattle
JPS52141207A (en) * 1976-05-19 1977-11-25 Hitachi Maxell Magnetic recording media
JPS5338760A (en) * 1976-09-16 1978-04-10 Nakagawa Orimono Kk Method of fitting pattern for shift woven fabric with splashed patterns
JPS5428603A (en) * 1977-08-05 1979-03-03 Toyo Boseki Magnetic recording medium
JPS5483406A (en) * 1977-12-15 1979-07-03 Hitachi Maxell Method of fabricating magnetic record medium
JPS5484707A (en) * 1977-12-19 1979-07-05 Hitachi Maxell Magnetic recording medium
JPS54143117A (en) * 1978-04-27 1979-11-08 Toyo Boseki Magnetic recording medium
JPS54148504A (en) * 1978-05-15 1979-11-20 Tdk Corp Magnetic recording medium
JPS54151411A (en) * 1978-05-20 1979-11-28 Hitachi Maxell Magnetic recording medium
JPS54151417A (en) * 1978-05-19 1979-11-28 Toyo Boseki Magnetic recording medium
JPS54157603A (en) * 1978-06-01 1979-12-12 Toyo Boseki Magnetic recording medium
JPS5538693A (en) * 1978-09-13 1980-03-18 Toyo Tire & Rubber Co Ltd Magnetic recording medium
JPS55147570A (en) * 1979-05-07 1980-11-17 Victor Co Of Japan Ltd Magnetic paint
JPS5758227A (en) * 1980-09-25 1982-04-07 Tdk Corp Magnetic recording medium
JPS5841565A (en) * 1981-09-07 1983-03-10 日本ゼオン株式会社 Pulse type blood pump
JPS6346489A (en) * 1986-08-13 1988-02-27 日本電気株式会社 File type display device

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840889A (en) * 1971-09-27 1973-06-15
JPS50112004A (en) * 1974-02-12 1975-09-03
JPS523815A (en) * 1975-06-24 1977-01-12 Yoshinari Hirosaki A process for preparing a health promotive agent for men and cattle
JPS52141207A (en) * 1976-05-19 1977-11-25 Hitachi Maxell Magnetic recording media
JPS5338760A (en) * 1976-09-16 1978-04-10 Nakagawa Orimono Kk Method of fitting pattern for shift woven fabric with splashed patterns
JPS5428603A (en) * 1977-08-05 1979-03-03 Toyo Boseki Magnetic recording medium
JPS5483406A (en) * 1977-12-15 1979-07-03 Hitachi Maxell Method of fabricating magnetic record medium
JPS5484707A (en) * 1977-12-19 1979-07-05 Hitachi Maxell Magnetic recording medium
JPS54143117A (en) * 1978-04-27 1979-11-08 Toyo Boseki Magnetic recording medium
JPS54148504A (en) * 1978-05-15 1979-11-20 Tdk Corp Magnetic recording medium
JPS54151417A (en) * 1978-05-19 1979-11-28 Toyo Boseki Magnetic recording medium
JPS54151411A (en) * 1978-05-20 1979-11-28 Hitachi Maxell Magnetic recording medium
JPS54157603A (en) * 1978-06-01 1979-12-12 Toyo Boseki Magnetic recording medium
JPS5538693A (en) * 1978-09-13 1980-03-18 Toyo Tire & Rubber Co Ltd Magnetic recording medium
JPS55147570A (en) * 1979-05-07 1980-11-17 Victor Co Of Japan Ltd Magnetic paint
JPS5758227A (en) * 1980-09-25 1982-04-07 Tdk Corp Magnetic recording medium
JPS5841565A (en) * 1981-09-07 1983-03-10 日本ゼオン株式会社 Pulse type blood pump
JPS6346489A (en) * 1986-08-13 1988-02-27 日本電気株式会社 File type display device

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0159646B2 (en) * 1982-07-01 1989-12-19 Sony Corp
WO1984000241A1 (en) * 1982-07-01 1984-01-19 Sony Corp Magnetic recording medium
WO1984000240A1 (en) * 1982-07-01 1984-01-19 Sony Corp Magnetic recording medium
JPS595424A (en) * 1982-07-01 1984-01-12 Sony Corp Magnetic recording medium
JPS598127A (en) * 1982-07-05 1984-01-17 Sony Corp Magnetic recording medium
JPH0379764B2 (en) * 1982-07-05 1991-12-19 Sonii Kk
JPS5940320A (en) * 1982-08-30 1984-03-06 Sony Corp Magnetic recording medium
JPH0379765B2 (en) * 1982-08-30 1991-12-19 Sony Corp
JPS5979427A (en) * 1982-10-29 1984-05-08 Sony Corp Magnetic recording medium
JPS6358870B2 (en) * 1983-07-06 1988-11-17
JPS6015473A (en) * 1983-07-06 1985-01-26 Toyo Tire & Rubber Co Ltd Magnetic paint
JPS6159623A (en) * 1984-08-29 1986-03-27 Hitachi Maxell Ltd Magnetic recording medium
JPH0470686B2 (en) * 1984-08-29 1992-11-11 Hitachi Maxell
US5543226A (en) * 1991-12-18 1996-08-06 Basf Magnetics Gmbh Magnetic recording media
US5424132A (en) * 1992-10-12 1995-06-13 Basf Magnetics Gmbh Magnetic recording media
EP0691644A1 (en) 1994-07-09 1996-01-10 BASF Magnetics GmbH Magnetic recording medium
EP0742238A1 (en) * 1995-05-11 1996-11-13 BASF Magnetics GmbH Polymer compositions suitable for use as dispersing resins
US6132880A (en) * 1997-08-12 2000-10-17 Emtec Magnetics Gmbh EMTEC magnetics GmbH

Also Published As

Publication number Publication date
JPS6346886B2 (en) 1988-09-19

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