JPS5584037A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5584037A
JPS5584037A JP15957678A JP15957678A JPS5584037A JP S5584037 A JPS5584037 A JP S5584037A JP 15957678 A JP15957678 A JP 15957678A JP 15957678 A JP15957678 A JP 15957678A JP S5584037 A JPS5584037 A JP S5584037A
Authority
JP
Japan
Prior art keywords
silicone oil
powder
recording medium
magnetic recording
soaked
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
JP15957678A
Other languages
Japanese (ja)
Inventor
Akira Miyake
Nariyuki Hosoo
Akinari Hayashi
Shigeo Hirai
Yoshinori Yamamoto
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 JP15957678A priority Critical patent/JPS5584037A/en
Publication of JPS5584037A publication Critical patent/JPS5584037A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a magnetic recording medium featuring the narrow magnetism keeping power distribution width and small aging of the characteristics by coating the secific ferromagneic metal powder with the silicone oil film formed on the surface onto the substrate via the binder of the mixture of the isocyanate and the functional group content vinyl chloride - vinyl acetate copolymer.
CONSTITUTION: The iron oxide powder (such as the α-Fe2O3 powder obtained by heating and dehydrating the α-oxy-iron hydroxide obtained from the alkaline solution) is soaked into the silicone oil solution to receive the heat reduction to obtain the ferromagnetic metal powder. This magnetic powder is soaked into the silicone oil solution and then dried at about 200W300°C to form the silicone oil film on the surface of the magnetic powder to be then coated on the substrate along with the mixture of the isocyanate compound and the vinyl chloride-vinyl acetate copolymer containing the hydroxyl group or the carboxyl group in the molecule. Thus the magnetic recording medium is obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP15957678A 1978-12-20 1978-12-20 Magnetic recording medium Pending JPS5584037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15957678A JPS5584037A (en) 1978-12-20 1978-12-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15957678A JPS5584037A (en) 1978-12-20 1978-12-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5584037A true JPS5584037A (en) 1980-06-24

Family

ID=15696723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15957678A Pending JPS5584037A (en) 1978-12-20 1978-12-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5584037A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52154607A (en) * 1976-05-20 1977-12-22 Hitachi Maxell Magnetic recording media
JPS52155398A (en) * 1976-05-20 1977-12-23 Hitachi Maxell Metallic magneticcpowder for magnetic recording which has excellent oxidation stability and method of manufacture thereof
JPS535797A (en) * 1976-07-05 1978-01-19 Hitachi Maxell Metallic magnetic powder for magnetic recording which has excellent oxidation stability and method of manufacture thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52154607A (en) * 1976-05-20 1977-12-22 Hitachi Maxell Magnetic recording media
JPS52155398A (en) * 1976-05-20 1977-12-23 Hitachi Maxell Metallic magneticcpowder for magnetic recording which has excellent oxidation stability and method of manufacture thereof
JPS535797A (en) * 1976-07-05 1978-01-19 Hitachi Maxell Metallic magnetic powder for magnetic recording which has excellent oxidation stability and method of manufacture thereof

Similar Documents

Publication Publication Date Title
JPS5744227A (en) Magnetic recording medium
JPS5584037A (en) Magnetic recording medium
JPS5584035A (en) Manufacture of magnetic recording medium
JPS5613526A (en) Magnetic recording medium
JPS5583209A (en) Ferromagnetic powder and preparing the same
JPS54162666A (en) Manufacture of needlelike magnetic alloy particle
JPS5654637A (en) Magnetic recording medium
JPS5584036A (en) Manufacture of magnetic recording medium
JPS5584033A (en) Manufacture of magnetic recording medium
JPS5584041A (en) Magnetic recording medium
JPS56117336A (en) Manufacture of magnetic recording medium
JPS5253945A (en) Method for top coating with coating compounds which contain metallic p owder and pigments in non-aqueous dispersion with a high solid content
JPS5517816A (en) Magnetic recording media
JPS5532252A (en) Magnetic recording medium
JPS5341202A (en) Novel magnetic recording medium
JPS5522247A (en) Magnetic recording medium
JPS5597029A (en) Magnetic tape
JPS5515281A (en) Processing method for magnetic powder
JPS5651025A (en) Magnetic recording medium
JPS5629840A (en) Magnetic recording medium
JPS5485397A (en) Magnetic powder
JPS5625905A (en) Ferromagnetic powder and its preparation
JPS5468206A (en) Magnetic recording medium
JPS5517811A (en) Magnetic recording media
JPS5584043A (en) Magnetic recording medium