JPS5517815A - Magnetic recording media - Google Patents

Magnetic recording media

Info

Publication number
JPS5517815A
JPS5517815A JP8872778A JP8872778A JPS5517815A JP S5517815 A JPS5517815 A JP S5517815A JP 8872778 A JP8872778 A JP 8872778A JP 8872778 A JP8872778 A JP 8872778A JP S5517815 A JPS5517815 A JP S5517815A
Authority
JP
Japan
Prior art keywords
magnetic
lubricant
magnetic powder
over
magnetic layer
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
JP8872778A
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 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 JP8872778A priority Critical patent/JPS5517815A/en
Publication of JPS5517815A publication Critical patent/JPS5517815A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve the wear proof of a magnetic layer and increases its durability by using the lubricant consisting of higher fatty acid ester and fatty acid amide, which is solid at the normal room temperature, 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 powder with Mohs' hardness of 6 and over, desirably, average particle size of 0.5 to 2μ, such as α-iron oxide, together with magnetic powder, binder components, conductive submaterial, and solvent. The lubricant solution consisting of the higher fatty acide ester with desirable melting point 10 to 40°C and the fatty acide amide whose melting point is 50°C and over in the weight ratio 99/1 to 80/20 is coated on the magnetic layer. Or, the two-component lubricant may be added to magnetic coating material. It is desirable that the quantity of addition of the non-magnetic power to the magnetic powder is 1 to 3wt% and that of the lubricant to the total coating materials is 0.1 to 20wt%.
COPYRIGHT: (C)1980,JPO&Japio
JP8872778A 1978-07-19 1978-07-19 Magnetic recording media Pending JPS5517815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8872778A JPS5517815A (en) 1978-07-19 1978-07-19 Magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8872778A JPS5517815A (en) 1978-07-19 1978-07-19 Magnetic recording media

Publications (1)

Publication Number Publication Date
JPS5517815A true JPS5517815A (en) 1980-02-07

Family

ID=13950939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8872778A Pending JPS5517815A (en) 1978-07-19 1978-07-19 Magnetic recording media

Country Status (1)

Country Link
JP (1) JPS5517815A (en)

Cited By (1)

* 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

Cited By (1)

* 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

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