JPS56117331A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS56117331A
JPS56117331A JP1989980A JP1989980A JPS56117331A JP S56117331 A JPS56117331 A JP S56117331A JP 1989980 A JP1989980 A JP 1989980A JP 1989980 A JP1989980 A JP 1989980A JP S56117331 A JPS56117331 A JP S56117331A
Authority
JP
Japan
Prior art keywords
recording medium
magnetic recording
low
binder components
magnetic powder
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
JP1989980A
Other languages
Japanese (ja)
Inventor
Osamu Saito
Fumio Togawa
Takezo Shimizu
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 JP1989980A priority Critical patent/JPS56117331A/en
Publication of JPS56117331A publication Critical patent/JPS56117331A/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
    • G11B5/702—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
    • G11B5/7023—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 containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins

Abstract

PURPOSE:To improve the durability of a recording medium and the dispersiblity, etc., of magnetic powder by using as binder components of a magnetic recording medium a specific vinyl chloride-vinyl acetate copolymer, low-molecular-weight polyol and alkyl sulfosuccinate in combination. CONSTITUTION:For a magnetic recording medium obtained by coating the base with magnetic powder together with binder components, vinyl chloride-vinyl acetate copolymer (A) containing a >=10wt% vinyl alcohol unit, low-moleculer-weight polyol (B) by about 5-50wt% of the total weight of component A, and dialkyl sulfosuccinate (C) expressed by the formula (where R1 and R2 are alkyl and M is univalent metal) by about 0.1-10wt% of magnetic powder are used as binder components. Further, low-molecular-weight polyisocyanate (D) (e.g. m-phenylenediisocyanate) is preferably used.
JP1989980A 1980-02-20 1980-02-20 Magnetic recording medium Pending JPS56117331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989980A JPS56117331A (en) 1980-02-20 1980-02-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989980A JPS56117331A (en) 1980-02-20 1980-02-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS56117331A true JPS56117331A (en) 1981-09-14

Family

ID=12012040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989980A Pending JPS56117331A (en) 1980-02-20 1980-02-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56117331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8689642B2 (en) 2011-10-07 2014-04-08 Li-Ho Yao Torque sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8689642B2 (en) 2011-10-07 2014-04-08 Li-Ho Yao Torque sensor

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