JPS6476528A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS6476528A
JPS6476528A JP23391987A JP23391987A JPS6476528A JP S6476528 A JPS6476528 A JP S6476528A JP 23391987 A JP23391987 A JP 23391987A JP 23391987 A JP23391987 A JP 23391987A JP S6476528 A JPS6476528 A JP S6476528A
Authority
JP
Japan
Prior art keywords
data area
area
smoothness
peak
value
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
JP23391987A
Other languages
Japanese (ja)
Inventor
Toshimitsu Takizawa
Katsuhiko Kaida
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP23391987A priority Critical patent/JPS6476528A/en
Publication of JPS6476528A publication Critical patent/JPS6476528A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To increase recording density and to improve mechanical reliability by providing a surface having the smoothness lower than the smoothness of a data area to a CSS area and forming said surface in such a manner that the peak value of the projecting parts of said surface does not exceed the average value of the gaps between the respective peak values in the rugged parts of the area of the data area. CONSTITUTION:A magnetic film 15 contg. for example, iron oxide, etc., is formed on the surface of a substrate 14. The surface of the magnetic film 15 corresponding to the data area 13 is formed to such high smoothness at which, for example, the max. value of the gap values from the peak to peak of the ruggedness is <=0,01mum. On the other hand, the surface of the magnetic film 15 corresponding to the contact start stop (CSS) area 12 is formed to, for example, about 0.25mum max. value and to the smoothness considerably lower than the smoothness of the data area 13. The peak value of the projecting parts in the CSS area is so set as not to exceed the average value of the gap values in the data area 13. The lower floating of a magnetic head is obtd. at the time of reading/writing in the data area and the higher density recording is enabled; in addition, the mechanical reliability is improved.
JP23391987A 1987-09-18 1987-09-18 Magnetic recording medium Pending JPS6476528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23391987A JPS6476528A (en) 1987-09-18 1987-09-18 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23391987A JPS6476528A (en) 1987-09-18 1987-09-18 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS6476528A true JPS6476528A (en) 1989-03-22

Family

ID=16962652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23391987A Pending JPS6476528A (en) 1987-09-18 1987-09-18 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS6476528A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0636274A (en) * 1992-06-30 1994-02-10 Internatl Business Mach Corp <Ibm> Magnetic disk and magnetic disk device
JPH0757251A (en) * 1993-08-11 1995-03-03 Nec Corp Magnetic disk substrate and its working device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848227A (en) * 1981-09-16 1983-03-22 Fujitsu Ltd Magnetic disk medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848227A (en) * 1981-09-16 1983-03-22 Fujitsu Ltd Magnetic disk medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0636274A (en) * 1992-06-30 1994-02-10 Internatl Business Mach Corp <Ibm> Magnetic disk and magnetic disk device
JPH0757251A (en) * 1993-08-11 1995-03-03 Nec Corp Magnetic disk substrate and its working device

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