JPS6413227A - Magnetic disk and its working method - Google Patents

Magnetic disk and its working method

Info

Publication number
JPS6413227A
JPS6413227A JP17017287A JP17017287A JPS6413227A JP S6413227 A JPS6413227 A JP S6413227A JP 17017287 A JP17017287 A JP 17017287A JP 17017287 A JP17017287 A JP 17017287A JP S6413227 A JPS6413227 A JP S6413227A
Authority
JP
Japan
Prior art keywords
disk
magnetic
film
protective film
thickness
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
JP17017287A
Other languages
Japanese (ja)
Inventor
Masanari Mihashi
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP17017287A priority Critical patent/JPS6413227A/en
Publication of JPS6413227A publication Critical patent/JPS6413227A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To prevent the attraction of a magnetic head and the deterioration of a magnetic characteristic by forming an abrasive pad specified with the concentric ruggedness whose depth is larger than the thickness of a lubrication film and smaller than the thickness of a protective film on the protective film of a magnetic recording medium, by using a specified grinding pad. CONSTITUTION:The magnetic recording medium 22 is formed on a magnetic disk substrate 21, and further, the protective film 23 is formed by spin-coating silicon dioxide in 500Angstrom thickness, and next, the concentric fine ruggedness is formed on the protection film 23. The fine ruggedness of the protective film is worked as follows. A working liquid tank 33 is arranged under a disk supporting tool 32 to support the magnetic disk 31 vertically, and a part of the disk plate of the disk 31 existing below the supporting tool 32 is immersed in the working liquid 34 and the disk 31 is rotated. Grinding grains harder than the material of the protection film 23 and the abrasive pad 35 which has a nap and is of vertical Young's modulus of 10<3>g/mm<2>, are used for working. Further the lubrication film 24 is formed on the protection film 23 worked by such a way and the attraction of the magnetic head and the deterioration of the magnetic characteristic can be prevented.
JP17017287A 1987-07-07 1987-07-07 Magnetic disk and its working method Pending JPS6413227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17017287A JPS6413227A (en) 1987-07-07 1987-07-07 Magnetic disk and its working method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17017287A JPS6413227A (en) 1987-07-07 1987-07-07 Magnetic disk and its working method

Publications (1)

Publication Number Publication Date
JPS6413227A true JPS6413227A (en) 1989-01-18

Family

ID=15900025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17017287A Pending JPS6413227A (en) 1987-07-07 1987-07-07 Magnetic disk and its working method

Country Status (1)

Country Link
JP (1) JPS6413227A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04113516A (en) * 1990-08-31 1992-04-15 Nec Corp Surface smoothing method and device for magnetic disk substrate
JPH04360017A (en) * 1991-06-07 1992-12-14 Fujitsu Ltd Metallic thin film type magnetic disk and production thereof
JPH0869621A (en) * 1994-12-27 1996-03-12 Itochu Corp Production of magnetic recording disk

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04113516A (en) * 1990-08-31 1992-04-15 Nec Corp Surface smoothing method and device for magnetic disk substrate
JPH04360017A (en) * 1991-06-07 1992-12-14 Fujitsu Ltd Metallic thin film type magnetic disk and production thereof
JPH0869621A (en) * 1994-12-27 1996-03-12 Itochu Corp Production of magnetic recording disk

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