JPS56153533A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS56153533A
JPS56153533A JP5589080A JP5589080A JPS56153533A JP S56153533 A JPS56153533 A JP S56153533A JP 5589080 A JP5589080 A JP 5589080A JP 5589080 A JP5589080 A JP 5589080A JP S56153533 A JPS56153533 A JP S56153533A
Authority
JP
Japan
Prior art keywords
magnetic powder
magnetic
coated
glyceride
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
JP5589080A
Other languages
Japanese (ja)
Inventor
Masaharu Nishimatsu
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP5589080A priority Critical patent/JPS56153533A/en
Publication of JPS56153533A publication Critical patent/JPS56153533A/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
    • G11B5/71—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 lubricant

Landscapes

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

Abstract

PURPOSE:To prevent the running noise like tape squeaking, by decreasing the dynamic friction coefficient, by coating the surface of magnetic powder by use of glyceride and phosphate and providing the magnetic recording layer dispersed the coated magnetic powder to the coupling agent. CONSTITUTION:Glyceride which is fatty acid ester of glucerine and whose fatty acid has saturated hydrocarbon residual radical of 12-20C or 1-2 double bonds in hydorcabon residual radical of C18, and a solution containing phosphate of alkylphenol or higher alochol of <=10 parts by weight to the magnetic powder 100pts.wt. and <=10pts.wt. in total, are mixed with the magnetic powder. After both the agents are adsorbed on the surface of magnetic powder, the coated magnetic powder is manufactured by heating and drying. Next a magnetic paint is prpared by adding the bonding agent resin and curing agent, if required, to this magnetic powder. This paint is coated and dried on the base like polyester to obtain the tape having good dispering property of magnetic powder, small dynamic friction coefficient, excellent characteristics of recording and playback and good durability.
JP5589080A 1980-04-25 1980-04-25 Magnetic recording medium Pending JPS56153533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5589080A JPS56153533A (en) 1980-04-25 1980-04-25 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5589080A JPS56153533A (en) 1980-04-25 1980-04-25 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS56153533A true JPS56153533A (en) 1981-11-27

Family

ID=13011697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5589080A Pending JPS56153533A (en) 1980-04-25 1980-04-25 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56153533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647502A (en) * 1984-09-18 1987-03-03 Hitachi Maxell, Ltd. Magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647502A (en) * 1984-09-18 1987-03-03 Hitachi Maxell, Ltd. Magnetic recording medium

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