JPS6446220A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS6446220A
JPS6446220A JP20127387A JP20127387A JPS6446220A JP S6446220 A JPS6446220 A JP S6446220A JP 20127387 A JP20127387 A JP 20127387A JP 20127387 A JP20127387 A JP 20127387A JP S6446220 A JPS6446220 A JP S6446220A
Authority
JP
Japan
Prior art keywords
fine
coated layer
particles
ferromagnetic metallic
particle diameter
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
JP20127387A
Other languages
Japanese (ja)
Inventor
Koichi Shinohara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP20127387A priority Critical patent/JPS6446220A/en
Publication of JPS6446220A publication Critical patent/JPS6446220A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To improve C/N in short wavelength recording by forming a fine particle coated layer on a high-polymer film and disposing a fine ferromagnetic metallic film consisting of fine columnar particles having the particle diameter of <=2 times the particle diameter of the fine particles of the fine particle coated layer on said layer. CONSTITUTION:The fine particle coated layer 2 is formed on the high-polymer film 1 consisting of polyethylene terephtalate, polyethylene naphthalate, polyphenylene sulfide, etc. The fine particle coated layer 2 is formed by fixing the fine particles 3 of SiO2, CaCO3, BaSO4, etc., having diameter do(Angstrom ) by a resin 4 such as polyester, polyurethane or epoxy. The fin ferromagnetic metallic film 5 is provided on this fine particle coated layer 2. The fine ferromagnetic metallic film 5 is formed of the fine columnar particles 6. The particle diameter (d) of the fine columnar particles 6 is required to be <=2 times the particle diameter do of the fine particles 3. The diagonally vapor deposited film of Co-Cr, Co-Ti, Co-Ta, etc., is exemplified as the fine ferromagnetic metallic film 5. The C/N in short wavelength recording and reproduction is thereby improved.
JP20127387A 1987-08-12 1987-08-12 Magnetic recording medium Pending JPS6446220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20127387A JPS6446220A (en) 1987-08-12 1987-08-12 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20127387A JPS6446220A (en) 1987-08-12 1987-08-12 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS6446220A true JPS6446220A (en) 1989-02-20

Family

ID=16438225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20127387A Pending JPS6446220A (en) 1987-08-12 1987-08-12 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS6446220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03144912A (en) * 1989-10-30 1991-06-20 Matsushita Electric Ind Co Ltd Thin-film magnetic recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61104420A (en) * 1984-10-24 1986-05-22 Tdk Corp Medium and method for magnetic recording

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61104420A (en) * 1984-10-24 1986-05-22 Tdk Corp Medium and method for magnetic recording

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03144912A (en) * 1989-10-30 1991-06-20 Matsushita Electric Ind Co Ltd Thin-film magnetic recording medium

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