JPS57158030A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57158030A
JPS57158030A JP56041480A JP4148081A JPS57158030A JP S57158030 A JPS57158030 A JP S57158030A JP 56041480 A JP56041480 A JP 56041480A JP 4148081 A JP4148081 A JP 4148081A JP S57158030 A JPS57158030 A JP S57158030A
Authority
JP
Japan
Prior art keywords
fatty acid
magnetic
recording medium
acid ester
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
JP56041480A
Other languages
Japanese (ja)
Inventor
Fumio Togawa
Haruo Ando
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 JP56041480A priority Critical patent/JPS57158030A/en
Publication of JPS57158030A publication Critical patent/JPS57158030A/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

  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To obtain a high density recording medium by coating a base with magnetic paint formed by adding 10-18C higher saturated fatty acid and polyoxyalkylene fatty acid ester to magnetic powder of iron oxide which contains cobalt. CONSTITUTION:This magnetic recording medium is formed by adding 10-18C higher saturated fatty acid and polyoxyalkylene fatty acid ester by 0.1-5wt% each to magnetic paint which uses magnetic powder of iron oxide containing cobalt, and then coating a base with the resulting paint. Thus, fatty acid and polyoxyalkylene fatty acid ester are used in combination to obtain the high improving effect for dispersibility of the magnetic powder even when the amount of fatty acid is small. In addition, the falling of the powder is reduced and a tape squeaking is eliminated and running performance is improved greatly while a bleed-out phenomenon is suppressed, thus obtaining a medium suitable for high-density recording.
JP56041480A 1981-03-20 1981-03-20 Magnetic recording medium Pending JPS57158030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56041480A JPS57158030A (en) 1981-03-20 1981-03-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56041480A JPS57158030A (en) 1981-03-20 1981-03-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57158030A true JPS57158030A (en) 1982-09-29

Family

ID=12609507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56041480A Pending JPS57158030A (en) 1981-03-20 1981-03-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57158030A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6157035A (en) * 1984-08-28 1986-03-22 Konishiroku Photo Ind Co Ltd Magnetic recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6157035A (en) * 1984-08-28 1986-03-22 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPH0568009B2 (en) * 1984-08-28 1993-09-28 Konishiroku Photo Ind

Similar Documents

Publication Publication Date Title
JPS57130229A (en) Manufacture of magnetic recording material
JPS52122213A (en) Production of ferromagnetic metal powder
JPS5421806A (en) Magnetic recording medium
JPS5668928A (en) Magnetic recording medium
JPS57158030A (en) Magnetic recording medium
JPS5315802A (en) High density magnetic recording material
JPS57158029A (en) Magnetic recording medium
JPS57158031A (en) Magnetic recording medium
JPS57158028A (en) High density magnetic recording medium
JPS5413997A (en) Magnetic recording medium and its manufacture
JPS57130230A (en) Manufacture of magnetic recording material
JPS57158032A (en) Magnetic recording medium
JPS57179943A (en) High-density magnetic recording medium
JPS5584041A (en) Magnetic recording medium
JPS5629840A (en) Magnetic recording medium
JPS5315803A (en) Magnetic recording material
JPS57154627A (en) Magnetic recording medium
JPS54123919A (en) Lubricant for magnetic recording
JPS57154626A (en) Magnetic recording medium
JPS5361306A (en) Magnetic recording medium
JPS5218302A (en) Magnetic sheet recording/playing method
JPS5651025A (en) Magnetic recording medium
JPS57158027A (en) High density magnetic recording medium
JPS57154631A (en) Magnetic recording medium
JPS57154628A (en) Magnetic recording medium