JPS57152532A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57152532A
JPS57152532A JP3984581A JP3984581A JPS57152532A JP S57152532 A JPS57152532 A JP S57152532A JP 3984581 A JP3984581 A JP 3984581A JP 3984581 A JP3984581 A JP 3984581A JP S57152532 A JPS57152532 A JP S57152532A
Authority
JP
Japan
Prior art keywords
magnetic
salt
powder
magnetic powder
paint
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
JP3984581A
Other languages
Japanese (ja)
Inventor
Shigeo Aoyama
Takezo Shimizu
Fumio Togawa
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 JP3984581A priority Critical patent/JPS57152532A/en
Publication of JPS57152532A publication Critical patent/JPS57152532A/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
    • G11B5/7013—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

Landscapes

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

Abstract

PURPOSE:To evade a decrease in heat resistance by improving the dispersibility and wear resistance of magnetic powder by adding a salt of dialkyl sulfosuccinate to a magnetic layer which uses cellulose resin and an urethane prepolymer as binder components. CONSTITUTION:A magnetic layer formed by binding magnetic powder with a binder which contains cellulose resin and an urethane prepolymer contains a salt of dialkyl sulfosuccinate. As said salt, alkali metallic salt, for example, is used by preferably about 0.1-10wt% to the magnetic powder. For adding this salt to the magnetic layer, it is added and mixed together with another paint component into magnetic paint to be applied over a base, or adhered to the surface of the magnetic powder previously in an adequate means to apply the magnetic paint, made of the powder, over the base.
JP3984581A 1981-03-18 1981-03-18 Magnetic recording medium Pending JPS57152532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3984581A JPS57152532A (en) 1981-03-18 1981-03-18 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3984581A JPS57152532A (en) 1981-03-18 1981-03-18 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57152532A true JPS57152532A (en) 1982-09-20

Family

ID=12564293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3984581A Pending JPS57152532A (en) 1981-03-18 1981-03-18 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57152532A (en)

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