JPS5517816A - Magnetic recording media - Google Patents

Magnetic recording media

Info

Publication number
JPS5517816A
JPS5517816A JP8872878A JP8872878A JPS5517816A JP S5517816 A JPS5517816 A JP S5517816A JP 8872878 A JP8872878 A JP 8872878A JP 8872878 A JP8872878 A JP 8872878A JP S5517816 A JPS5517816 A JP S5517816A
Authority
JP
Japan
Prior art keywords
magnetic
higher fatty
lubricant
coating material
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
JP8872878A
Other languages
Japanese (ja)
Inventor
Kunio Mizushima
Taku Yamase
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 JP8872878A priority Critical patent/JPS5517816A/en
Publication of JPS5517816A publication Critical patent/JPS5517816A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve the wear proof of a magnetic layer and increase its durability by using the lubricant consisting of higher fatty acid ester and higher fatty alcohol together with the non-magnetic powder with Mohs' hardness of 6 and over.
CONSTITUTION: A magnetic layer is formed by the magnetic coating material made by mixing the non-magnetic power with Mohs' hardness of 6 and over and, desirably, average particle size of 0.5 to 2μ, such as α-iron oxide, together with magnetic powder, binder components, conductive submaterials, and solvents. The lubricant solution consisting of the higher fatty acid ester with desirable melting point of 10 to 40°C and the higher fatty alcohol with C12W20 in the weight ratio 99/1 to 80/20 is coated on the magnetic layer. Or, the lubricant may be added to the magnetic coating material. It is desirable that the quantity of addition of the non-magnetic powder to the magnetic powder is 1 to 3wt% and that of the lubricant to the total quantity of coating material is 0.1 to 20wt%.
COPYRIGHT: (C)1980,JPO&Japio
JP8872878A 1978-07-19 1978-07-19 Magnetic recording media Pending JPS5517816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8872878A JPS5517816A (en) 1978-07-19 1978-07-19 Magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8872878A JPS5517816A (en) 1978-07-19 1978-07-19 Magnetic recording media

Publications (1)

Publication Number Publication Date
JPS5517816A true JPS5517816A (en) 1980-02-07

Family

ID=13950969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8872878A Pending JPS5517816A (en) 1978-07-19 1978-07-19 Magnetic recording media

Country Status (1)

Country Link
JP (1) JPS5517816A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57179945A (en) * 1981-04-28 1982-11-05 Fuji Photo Film Co Ltd Magnetic recording medium
JPS5975432A (en) * 1982-10-22 1984-04-28 Fuji Photo Film Co Ltd Magnetic recording body
US4584243A (en) * 1982-11-01 1986-04-22 Sumitomo Chemical Company, Limited Abrasive, production thereof and use thereof in magnetic recording medium
US4590127A (en) * 1982-11-02 1986-05-20 Sumitomo Chemical Company, Limited Abrasive used in magnetic recording medium and production thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57179945A (en) * 1981-04-28 1982-11-05 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0353687B2 (en) * 1981-04-28 1991-08-15 Fuji Photo Film Co Ltd
JPS5975432A (en) * 1982-10-22 1984-04-28 Fuji Photo Film Co Ltd Magnetic recording body
JPH0479059B2 (en) * 1982-10-22 1992-12-14 Fuji Photo Film Co Ltd
US4584243A (en) * 1982-11-01 1986-04-22 Sumitomo Chemical Company, Limited Abrasive, production thereof and use thereof in magnetic recording medium
US4590127A (en) * 1982-11-02 1986-05-20 Sumitomo Chemical Company, Limited Abrasive used in magnetic recording medium and production thereof

Similar Documents

Publication Publication Date Title
JPS5586103A (en) High density magnetic recording unit
JPS54140504A (en) Magnetic recording lubricant
JPS5517816A (en) Magnetic recording media
JPS55117736A (en) Magnetic recording medium
JPS5517815A (en) Magnetic recording media
JPS5570936A (en) Magnetic recording media
JPS5315802A (en) High density magnetic recording material
JPS5413997A (en) Magnetic recording medium and its manufacture
JPS5517813A (en) Magnetic recording media
JPS5517814A (en) Magnetic recording media
JPS5517835A (en) Magnetic recording media
JPS5517834A (en) Magnetic recording media
JPS5517811A (en) Magnetic recording media
JPS5315803A (en) Magnetic recording material
JPS5651025A (en) Magnetic recording medium
JPS5383707A (en) Magnetic recording medium composition and preparation thereof
JPS5528555A (en) Magnetic recording medium
JPS5658134A (en) Magnetic recording medium
JPS55117738A (en) Magnetic recording medium
JPS5528562A (en) Magnetic recording medium
JPS5528559A (en) Magnetic recording medium
JPS5528553A (en) Magnetic recording medium
JPS5528560A (en) Magnetic recording medium
JPS5249803A (en) Magnetic recording medium
JPS5584035A (en) Manufacture of magnetic recording medium