JPS56143523A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS56143523A
JPS56143523A JP4540980A JP4540980A JPS56143523A JP S56143523 A JPS56143523 A JP S56143523A JP 4540980 A JP4540980 A JP 4540980A JP 4540980 A JP4540980 A JP 4540980A JP S56143523 A JPS56143523 A JP S56143523A
Authority
JP
Japan
Prior art keywords
recording medium
magnetic recording
magnetic layer
layer surface
gap rate
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
JP4540980A
Other languages
Japanese (ja)
Inventor
Eiichi Tadokoro
Masaaki Fujiyama
Goro Akashi
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP4540980A priority Critical patent/JPS56143523A/en
Priority to DE19813113859 priority patent/DE3113859A1/en
Priority to US06/251,826 priority patent/US4450199A/en
Publication of JPS56143523A publication Critical patent/JPS56143523A/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

Abstract

PURPOSE:To obtain a magnetic recording medium superior in S/N, head wear resistance, head cleaning effect, etc., by specifying the magnetic layer surface roughness and gap rate of a coating type magnetic recording medium. CONSTITUTION:A magnetic layer of <=0.021mu in the mean center-line roughness of the magnetic layer surface and >=30% in gap rate is provided on a nonmagnetic base to obtain a magnetic recording medium.
JP4540980A 1980-04-07 1980-04-07 Magnetic recording medium Pending JPS56143523A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4540980A JPS56143523A (en) 1980-04-07 1980-04-07 Magnetic recording medium
DE19813113859 DE3113859A1 (en) 1980-04-07 1981-04-06 MAGNETIC RECORDING MATERIAL
US06/251,826 US4450199A (en) 1980-04-07 1981-04-07 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4540980A JPS56143523A (en) 1980-04-07 1980-04-07 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS56143523A true JPS56143523A (en) 1981-11-09

Family

ID=12718450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4540980A Pending JPS56143523A (en) 1980-04-07 1980-04-07 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56143523A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59201218A (en) * 1983-04-28 1984-11-14 Fuji Photo Film Co Ltd Magnetic recording medium
JPS59203224A (en) * 1983-05-02 1984-11-17 Fuji Photo Film Co Ltd Magnetic recording medium
JPS59229739A (en) * 1983-06-10 1984-12-24 Tdk Corp Magnetic recording medium
JPS6289218A (en) * 1985-10-15 1987-04-23 Hitachi Maxell Ltd Magnetic disk
JPH06309649A (en) * 1993-04-28 1994-11-04 Victor Co Of Japan Ltd Magnetic recording medium

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59201218A (en) * 1983-04-28 1984-11-14 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0479063B2 (en) * 1983-04-28 1992-12-14 Fuji Photo Film Co Ltd
JPS59203224A (en) * 1983-05-02 1984-11-17 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0479046B2 (en) * 1983-05-02 1992-12-14 Fuji Photo Film Co Ltd
JPS59229739A (en) * 1983-06-10 1984-12-24 Tdk Corp Magnetic recording medium
JPH0363121B2 (en) * 1983-06-10 1991-09-30 Tdk Electronics Co Ltd
JPS6289218A (en) * 1985-10-15 1987-04-23 Hitachi Maxell Ltd Magnetic disk
JPH0789407B2 (en) * 1985-10-15 1995-09-27 日立マクセル株式会社 Magnetic disk
JPH06309649A (en) * 1993-04-28 1994-11-04 Victor Co Of Japan Ltd Magnetic recording medium

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