JPS6448222A - Magnetic disk - Google Patents

Magnetic disk

Info

Publication number
JPS6448222A
JPS6448222A JP20405287A JP20405287A JPS6448222A JP S6448222 A JPS6448222 A JP S6448222A JP 20405287 A JP20405287 A JP 20405287A JP 20405287 A JP20405287 A JP 20405287A JP S6448222 A JPS6448222 A JP S6448222A
Authority
JP
Japan
Prior art keywords
film
nickel
phosphorus
zinc
underlying layer
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
JP20405287A
Other languages
Japanese (ja)
Inventor
Kenichi Gomi
Shoichi Sawahata
Yukio Saito
Seiji Takeuchi
Hideaki Tanaka
Hiroshi Miyadera
Akio Honchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP20405287A priority Critical patent/JPS6448222A/en
Publication of JPS6448222A publication Critical patent/JPS6448222A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To obtain a high-quality underlying layer with which the number of defect is small by converting metal zinc to a gaseous phase and sticking metal zinc onto a nonmagnetic substrate, then providing a nickel-phosphorus film formed by a plating method on the zinc layer as a nonmagnetic metallic film. CONSTITUTION:The plating film formed after the zinc particles to constitute the nuclei for film growth in a plating process are stuck in the following manner is used as the nickel-phosphorus film to be used as the underlying layer of a magnetic disk. Namely, the metal zinc is converted to atoms, ions, radicals, etc., by heating in a vacuum, etc., which are then stuck onto the substrate and the nickel-phosphorus film is formed by the plating method. The uniform growth of the nickel-phosphorus film on the substrate surface is thereby enabled and since the formed nickel-phosphorus film has the smaller number of defects, the magnetic disk produced by forming an intermediate film, magnetic film and protective film with the above-mentioned film as the underlying layer is the high-quality disk having less recording errors.
JP20405287A 1987-08-19 1987-08-19 Magnetic disk Pending JPS6448222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20405287A JPS6448222A (en) 1987-08-19 1987-08-19 Magnetic disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20405287A JPS6448222A (en) 1987-08-19 1987-08-19 Magnetic disk

Publications (1)

Publication Number Publication Date
JPS6448222A true JPS6448222A (en) 1989-02-22

Family

ID=16483951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20405287A Pending JPS6448222A (en) 1987-08-19 1987-08-19 Magnetic disk

Country Status (1)

Country Link
JP (1) JPS6448222A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008282432A (en) * 2007-05-08 2008-11-20 Showa Denko Kk Substrate made of aluminum alloy for magnetic recording medium, and its manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008282432A (en) * 2007-05-08 2008-11-20 Showa Denko Kk Substrate made of aluminum alloy for magnetic recording medium, and its manufacturing method

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