JPS5730124A - Protective film for magnetic recording medium - Google Patents

Protective film for magnetic recording medium

Info

Publication number
JPS5730124A
JPS5730124A JP10382380A JP10382380A JPS5730124A JP S5730124 A JPS5730124 A JP S5730124A JP 10382380 A JP10382380 A JP 10382380A JP 10382380 A JP10382380 A JP 10382380A JP S5730124 A JPS5730124 A JP S5730124A
Authority
JP
Japan
Prior art keywords
protective film
film
recording medium
magnetic recording
chromium
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.)
Granted
Application number
JP10382380A
Other languages
Japanese (ja)
Other versions
JPS6161444B2 (en
Inventor
Takuji Nakanishi
Tsutomu Nishimura
Toshitake Sato
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10382380A priority Critical patent/JPS5730124A/en
Publication of JPS5730124A publication Critical patent/JPS5730124A/en
Publication of JPS6161444B2 publication Critical patent/JPS6161444B2/ja
Granted 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To improve head crushing resistance and weather resistance by using a specific protective film. CONSTITUTION:On a base plate 1, a metallic and magnetic thin film 2 is provided and after a chromium or chromium oxide film 3 is provided on the film 2 as a protective film base material, a silicate film 4 of oxide, nitride, etc., such as SiO2 and Si3N4, is formed favorably to 0.05-0.08mum thickness.
JP10382380A 1980-07-29 1980-07-29 Protective film for magnetic recording medium Granted JPS5730124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10382380A JPS5730124A (en) 1980-07-29 1980-07-29 Protective film for magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10382380A JPS5730124A (en) 1980-07-29 1980-07-29 Protective film for magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5730124A true JPS5730124A (en) 1982-02-18
JPS6161444B2 JPS6161444B2 (en) 1986-12-25

Family

ID=14364127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10382380A Granted JPS5730124A (en) 1980-07-29 1980-07-29 Protective film for magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5730124A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58177528A (en) * 1982-04-10 1983-10-18 Nippon Telegr & Teleph Corp <Ntt> Magnetic disk medium
JPS60138721A (en) * 1983-11-29 1985-07-23 バスフ　アクチェン　ゲゼルシャフト Magnetic recording carrier
EP0175389A2 (en) * 1984-09-21 1986-03-26 Kabushiki Kaisha Toshiba Magnetic recording medium
JPS61204834A (en) * 1985-03-07 1986-09-10 Sony Corp Magnetic disk
JPS61255531A (en) * 1985-05-07 1986-11-13 Matsushita Electric Ind Co Ltd Magnetic recording medium
US5013580A (en) * 1987-10-27 1991-05-07 Thomson-Csf Video recording/play-back head, method for making it and apparatus applying said method
US5162161A (en) * 1988-01-13 1992-11-10 Hitachi, Ltd. Magnetic recording medium and method for fabricating the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127204A (en) * 1976-04-16 1977-10-25 Fuji Photo Film Co Ltd Magnetic recording medium
JPS5330304A (en) * 1976-09-01 1978-03-22 Fujitsu Ltd Formation of protective film of silicon nitride for magnetic recording medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127204A (en) * 1976-04-16 1977-10-25 Fuji Photo Film Co Ltd Magnetic recording medium
JPS5330304A (en) * 1976-09-01 1978-03-22 Fujitsu Ltd Formation of protective film of silicon nitride for magnetic recording medium

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58177528A (en) * 1982-04-10 1983-10-18 Nippon Telegr & Teleph Corp <Ntt> Magnetic disk medium
JPS60138721A (en) * 1983-11-29 1985-07-23 バスフ　アクチェン　ゲゼルシャフト Magnetic recording carrier
EP0175389A2 (en) * 1984-09-21 1986-03-26 Kabushiki Kaisha Toshiba Magnetic recording medium
JPS61204834A (en) * 1985-03-07 1986-09-10 Sony Corp Magnetic disk
JPH0533457B2 (en) * 1985-03-07 1993-05-19 Sony Corp
JPS61255531A (en) * 1985-05-07 1986-11-13 Matsushita Electric Ind Co Ltd Magnetic recording medium
US5013580A (en) * 1987-10-27 1991-05-07 Thomson-Csf Video recording/play-back head, method for making it and apparatus applying said method
US5162161A (en) * 1988-01-13 1992-11-10 Hitachi, Ltd. Magnetic recording medium and method for fabricating the same

Also Published As

Publication number Publication date
JPS6161444B2 (en) 1986-12-25

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