JPS56130831A - Manufacture for magnetic recording medium - Google Patents

Manufacture for magnetic recording medium

Info

Publication number
JPS56130831A
JPS56130831A JP3522980A JP3522980A JPS56130831A JP S56130831 A JPS56130831 A JP S56130831A JP 3522980 A JP3522980 A JP 3522980A JP 3522980 A JP3522980 A JP 3522980A JP S56130831 A JPS56130831 A JP S56130831A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic powder
metallic
recording medium
resin
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.)
Pending
Application number
JP3522980A
Other languages
Japanese (ja)
Inventor
Hiroshi Zaitsu
Akira Miyake
Yoshinori Yamamoto
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell Ltd
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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP3522980A priority Critical patent/JPS56130831A/en
Publication of JPS56130831A publication Critical patent/JPS56130831A/en
Pending 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
    • G11B5/712—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 surface treatment or coating of magnetic particles

Landscapes

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

Abstract

PURPOSE:To obtain the magnetic recording medium having the magnetic layer excellent in the oxidation stability of magnetic powder and excellent in the dispersing property, by the surface treatment of metallic and magnetic powder with a specific resin. CONSTITUTION:Polyvinylbutyral resin is dissolved in a suitable solvent such as toluene, methyl isobutyl ketone, and tetrahydrofuran, and after the metallic and magnetic powder is uniformly dispersed in this solution, drying is made in inert gas or under vauum to obtain the metallic and magnetic powder with surface treatment. Next, this surface treated metallic and magnetic powder is mixed and dissolved in the organic solvent dissolving the coupling agent resin to constitute the magnetic piant and then magnetic recording medium through the coating on the base. As polyvinyl butyral resin, about 250-900 average polymerization degree and rich in fluidity is preferable.
JP3522980A 1980-03-19 1980-03-19 Manufacture for magnetic recording medium Pending JPS56130831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3522980A JPS56130831A (en) 1980-03-19 1980-03-19 Manufacture for magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3522980A JPS56130831A (en) 1980-03-19 1980-03-19 Manufacture for magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS56130831A true JPS56130831A (en) 1981-10-14

Family

ID=12435999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3522980A Pending JPS56130831A (en) 1980-03-19 1980-03-19 Manufacture for magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56130831A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008248238A (en) * 2007-03-07 2008-10-16 Hitachi Maxell Ltd Manufacturing method of magnetic coating, and magnetic recording medium using the magnetic coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008248238A (en) * 2007-03-07 2008-10-16 Hitachi Maxell Ltd Manufacturing method of magnetic coating, and magnetic recording medium using the magnetic coating

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