JPS5423508A - Magnetic disc medium - Google Patents

Magnetic disc medium

Info

Publication number
JPS5423508A
JPS5423508A JP8836877A JP8836877A JPS5423508A JP S5423508 A JPS5423508 A JP S5423508A JP 8836877 A JP8836877 A JP 8836877A JP 8836877 A JP8836877 A JP 8836877A JP S5423508 A JPS5423508 A JP S5423508A
Authority
JP
Japan
Prior art keywords
magnetic disc
disc medium
contact start
stop
decreasing
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
JP8836877A
Other languages
English (en)
Japanese (ja)
Other versions
JPS578530B2 (enrdf_load_stackoverflow
Inventor
Toshitake Sato
Tomoyuki Toshima
Takuji Nakanishi
Akio Tago
Kenji Kogure
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 JP8836877A priority Critical patent/JPS5423508A/ja
Publication of JPS5423508A publication Critical patent/JPS5423508A/ja
Publication of JPS578530B2 publication Critical patent/JPS578530B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)
JP8836877A 1977-07-25 1977-07-25 Magnetic disc medium Granted JPS5423508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8836877A JPS5423508A (en) 1977-07-25 1977-07-25 Magnetic disc medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8836877A JPS5423508A (en) 1977-07-25 1977-07-25 Magnetic disc medium

Publications (2)

Publication Number Publication Date
JPS5423508A true JPS5423508A (en) 1979-02-22
JPS578530B2 JPS578530B2 (enrdf_load_stackoverflow) 1982-02-17

Family

ID=13940844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8836877A Granted JPS5423508A (en) 1977-07-25 1977-07-25 Magnetic disc medium

Country Status (1)

Country Link
JP (1) JPS5423508A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848227A (ja) * 1981-09-16 1983-03-22 Fujitsu Ltd 磁気デイスク媒体
JPS5884628U (ja) * 1981-12-03 1983-06-08 東京磁気印刷株式会社 円板型磁気記録媒体
US4939614A (en) * 1987-04-03 1990-07-03 Hitachi, Ltd. Magnetic disk medium with circumferentially textured surfaces and varied surface roughness and method of producing the same
JPH03272018A (ja) * 1990-03-12 1991-12-03 Seagate Technol Internatl 選択的に組織化された磁気記録媒体およびその製造方法
US5593341A (en) * 1992-12-30 1997-01-14 International Business Machines Corporation Method for manufacturing a disk drive unit having magnetic disks with textured data areas and head landing zones
US5737150A (en) * 1995-06-14 1998-04-07 Hitachi, Ltd. Magnetic disk unit with an impact force applying mechanism
US7301726B1 (en) * 2004-11-04 2007-11-27 Komag, Inc. Banded LZT CSS zone

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6448630U (enrdf_load_stackoverflow) * 1987-09-18 1989-03-27

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53123906A (en) * 1977-04-05 1978-10-28 Fujitsu Ltd Magnetic disc

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53123906A (en) * 1977-04-05 1978-10-28 Fujitsu Ltd Magnetic disc

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848227A (ja) * 1981-09-16 1983-03-22 Fujitsu Ltd 磁気デイスク媒体
JPS5884628U (ja) * 1981-12-03 1983-06-08 東京磁気印刷株式会社 円板型磁気記録媒体
US4939614A (en) * 1987-04-03 1990-07-03 Hitachi, Ltd. Magnetic disk medium with circumferentially textured surfaces and varied surface roughness and method of producing the same
JPH03272018A (ja) * 1990-03-12 1991-12-03 Seagate Technol Internatl 選択的に組織化された磁気記録媒体およびその製造方法
EP0447025B1 (en) * 1990-03-12 1996-11-06 Seagate Technology International Magnetic recording media and processes for manufacture thereof
US5593341A (en) * 1992-12-30 1997-01-14 International Business Machines Corporation Method for manufacturing a disk drive unit having magnetic disks with textured data areas and head landing zones
US5737150A (en) * 1995-06-14 1998-04-07 Hitachi, Ltd. Magnetic disk unit with an impact force applying mechanism
US7301726B1 (en) * 2004-11-04 2007-11-27 Komag, Inc. Banded LZT CSS zone

Also Published As

Publication number Publication date
JPS578530B2 (enrdf_load_stackoverflow) 1982-02-17

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