JPS57154627A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57154627A
JPS57154627A JP56041471A JP4147181A JPS57154627A JP S57154627 A JPS57154627 A JP S57154627A JP 56041471 A JP56041471 A JP 56041471A JP 4147181 A JP4147181 A JP 4147181A JP S57154627 A JPS57154627 A JP S57154627A
Authority
JP
Japan
Prior art keywords
recording medium
magnetic recording
magnetic
powder
5pts
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
JP56041471A
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 JP56041471A priority Critical patent/JPS57154627A/en
Publication of JPS57154627A publication Critical patent/JPS57154627A/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

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

Abstract

PURPOSE:To improve the dispersibility and the running smoothness and to suppress dropping-out of powder, by allowing a magnetic paint, where iron oxide powder containing Co is used, to contain a higher saturated fatty acid and lecithin. CONSTITUTION:A magnetic paint where 0.1-5pts.wt. higher saturated fatty acid having carbon number 10-18 such as lauric acid and stearic acid and 0.1- 5pts.wt. lecithin are added to 100pts.wt. iron oxide magnetic powder, where gamma- Fe2O3, Fe3O4, or an intermediate compound between these compounds is allowed to contain Co, is applied on a base material to obtain a magnetic recording medium.
JP56041471A 1981-03-20 1981-03-20 Magnetic recording medium Pending JPS57154627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56041471A JPS57154627A (en) 1981-03-20 1981-03-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56041471A JPS57154627A (en) 1981-03-20 1981-03-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57154627A true JPS57154627A (en) 1982-09-24

Family

ID=12609274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56041471A Pending JPS57154627A (en) 1981-03-20 1981-03-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57154627A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260542A2 (en) * 1986-09-17 1988-03-23 Bayer Ag Dispersions of magnetic lacquer, process for their production and their use
JPH01138763A (en) * 1987-07-22 1989-05-31 Matsushita Electric Works Ltd Manufacture of static induction semiconductor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260542A2 (en) * 1986-09-17 1988-03-23 Bayer Ag Dispersions of magnetic lacquer, process for their production and their use
JPH01138763A (en) * 1987-07-22 1989-05-31 Matsushita Electric Works Ltd Manufacture of static induction semiconductor device

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