JPS5758235A - Manufacture of magnetic recording medium - Google Patents

Manufacture of magnetic recording medium

Info

Publication number
JPS5758235A
JPS5758235A JP13339680A JP13339680A JPS5758235A JP S5758235 A JPS5758235 A JP S5758235A JP 13339680 A JP13339680 A JP 13339680A JP 13339680 A JP13339680 A JP 13339680A JP S5758235 A JPS5758235 A JP S5758235A
Authority
JP
Japan
Prior art keywords
alloy
gaseous
substrate
vapor
precipitation speed
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
JP13339680A
Other languages
Japanese (ja)
Inventor
Tsunemi Oiwa
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 JP13339680A priority Critical patent/JPS5758235A/en
Publication of JPS5758235A publication Critical patent/JPS5758235A/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/851—Coating a support with a magnetic layer by sputtering

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)

Abstract

PURPOSE:To obtain an excellent magnetic characteristic without decreasing a precipitation speed of Co (alloy), by specifying a gaseous pressure ratio of one of gaseous Ar, N2, Xe and Kr, and He, and the precipitation speed, when Co (alloy) is vacuum vapor-deposited on the base body. CONSTITUTION:An electronic beam heating device consisting of a water-cooled substrate 2, a hearth 3 and a thermion source 4 is provided in a bell jar 1, the substrate 2 is set so as to reduce the vapor-deposition angle alpha to 70 deg., a base body 5 of a polyester film, etc. is placed on the lower surface of the substrate 2, and Co (alloy) 6 is put into the hearth 3. Subsequently, it is exhausted by a rotary pump 7 and a diffusion pump 8, one of gaseous Ar, N2, Xe and Kr, and He are led in from a gas lead-in pipe 9 so as to keep the gaseous pressure ratio of said gas and He within the range of 0.5-10, and Co (alloy) is vapor-deposited so as to keep its precipitation speed/mixing gaseous pressure exists in the system within the range of 5-1,000mu/ min/ torr. In this way, a magnetic recording medium which is excellent in its angular shape ratio and coercive force is obtained.
JP13339680A 1980-09-25 1980-09-25 Manufacture of magnetic recording medium Pending JPS5758235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13339680A JPS5758235A (en) 1980-09-25 1980-09-25 Manufacture of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13339680A JPS5758235A (en) 1980-09-25 1980-09-25 Manufacture of magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5758235A true JPS5758235A (en) 1982-04-07

Family

ID=15103764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13339680A Pending JPS5758235A (en) 1980-09-25 1980-09-25 Manufacture of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5758235A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755535A (en) * 1980-09-20 1982-04-02 Hitachi Maxell Ltd Production of magnetic recording medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755535A (en) * 1980-09-20 1982-04-02 Hitachi Maxell Ltd Production of magnetic recording medium

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