JPS5724028A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5724028A
JPS5724028A JP9801280A JP9801280A JPS5724028A JP S5724028 A JPS5724028 A JP S5724028A JP 9801280 A JP9801280 A JP 9801280A JP 9801280 A JP9801280 A JP 9801280A JP S5724028 A JPS5724028 A JP S5724028A
Authority
JP
Japan
Prior art keywords
supporter
coating material
lubricant
recording medium
magnetic recording
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
JP9801280A
Other languages
Japanese (ja)
Other versions
JPS6346491B2 (en
Inventor
Kaoru Nakajima
Kunio Kobayashi
Yoshiaki Kugen
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 JP9801280A priority Critical patent/JPS5724028A/en
Priority to DE19803029820 priority patent/DE3029820A1/en
Priority to GB8025718A priority patent/GB2057298B/en
Priority to FR8017396A priority patent/FR2463478B1/en
Priority to NL8004484A priority patent/NL8004484A/en
Publication of JPS5724028A publication Critical patent/JPS5724028A/en
Publication of JPS6346491B2 publication Critical patent/JPS6346491B2/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
    • G11B5/71—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

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

Abstract

PURPOSE:To obtain a magnetic recording medium which has a reduced fluctuation of coefficient of friction regardless of a number of times of use, by coating a coating material containing a pigment, binder and a specific acrylic lubricant onto a supporter and then irradiating the radioactive rays to the supporter to harden the coating material. CONSTITUTION:A lubricant, which contains a molecule chain shown by formulas I, II, etc. [R: alkyl (containing fluorine)] and showing the lubricity plus acrylic double connection, is used. In other words, a coating material containing a pigment [such as gamma-Fe2O3 (when applied to a magnetic layer), the carbon black (when applied to a back coat layer)], a binder (such as vinyl chloridevinyl acetate copolymer, polyurethane, etc.) and the above-mentioned lubricant is applied on a supporter. Then the ionizing radioactive rays of >= about 100kV energy of irradiation are irradiated on the supporter by about 1-10M rad to harden the coating material.
JP9801280A 1979-08-06 1980-07-17 Magnetic recording medium Granted JPS5724028A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP9801280A JPS5724028A (en) 1980-07-17 1980-07-17 Magnetic recording medium
DE19803029820 DE3029820A1 (en) 1979-08-06 1980-08-06 MAGNETIC RECORDING MEDIUM
GB8025718A GB2057298B (en) 1979-08-06 1980-08-06 Magnetic recording media
FR8017396A FR2463478B1 (en) 1979-08-06 1980-08-06 MAGNETIC RECORDING ELEMENT
NL8004484A NL8004484A (en) 1979-08-06 1980-08-06 MAGNETIC REGISTRATION MATERIAL.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9801280A JPS5724028A (en) 1980-07-17 1980-07-17 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5724028A true JPS5724028A (en) 1982-02-08
JPS6346491B2 JPS6346491B2 (en) 1988-09-16

Family

ID=14207878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9801280A Granted JPS5724028A (en) 1979-08-06 1980-07-17 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5724028A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5982628A (en) * 1982-11-01 1984-05-12 Toyo Ink Mfg Co Ltd Magnetic recording medium and its manufacture
JPS59188832A (en) * 1983-04-11 1984-10-26 Sony Corp Magnetic recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5982628A (en) * 1982-11-01 1984-05-12 Toyo Ink Mfg Co Ltd Magnetic recording medium and its manufacture
JPH0413765B2 (en) * 1982-11-01 1992-03-10 Toyo Inki Seizo Kk
JPS59188832A (en) * 1983-04-11 1984-10-26 Sony Corp Magnetic recording medium

Also Published As

Publication number Publication date
JPS6346491B2 (en) 1988-09-16

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