JPS5577037A - Production of magnetic disc medium - Google Patents

Production of magnetic disc medium

Info

Publication number
JPS5577037A
JPS5577037A JP15157478A JP15157478A JPS5577037A JP S5577037 A JPS5577037 A JP S5577037A JP 15157478 A JP15157478 A JP 15157478A JP 15157478 A JP15157478 A JP 15157478A JP S5577037 A JPS5577037 A JP S5577037A
Authority
JP
Japan
Prior art keywords
medium
head
disc medium
magnetic disc
production
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
JP15157478A
Other languages
Japanese (ja)
Other versions
JPS583293B2 (en
Inventor
Kazuo Ogasa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15157478A priority Critical patent/JPS583293B2/en
Publication of JPS5577037A publication Critical patent/JPS5577037A/en
Publication of JPS583293B2 publication Critical patent/JPS583293B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To eliminate protrusions on the medium surface efficiently by detecting tracks, where surface protrusions exist, to perform the varnish process selectively in production of a magnetic disc medium.
CONSTITUTION: In the varnish process for magnetic disc medium 1 where the polish process for the magnetic applied film formed on the disc substrate is completed, acoustic emission element 3 is provided on mimic head 2 which scans rotating disc medium 1 from the outer side to the inner side successively. When head 2 strikes medium 1, flip flop (FF) 6 is set by the signal of element 3 which detects this strike, and voice coil motor 5 is stopped to stop head 2 on the track where protrusions exist, and simultaneously, medium 1 is caused to repeat rotation and stop operations by the signal of FF 6. After continuing the operation above until FF 6 is reset by timer 7 of a prescribed time, scanning to the inner side is started again, and the varnish process is continued similarly in order.
COPYRIGHT: (C)1980,JPO&Japio
JP15157478A 1978-12-07 1978-12-07 Manufacturing method for magnetic disk media Expired JPS583293B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15157478A JPS583293B2 (en) 1978-12-07 1978-12-07 Manufacturing method for magnetic disk media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15157478A JPS583293B2 (en) 1978-12-07 1978-12-07 Manufacturing method for magnetic disk media

Publications (2)

Publication Number Publication Date
JPS5577037A true JPS5577037A (en) 1980-06-10
JPS583293B2 JPS583293B2 (en) 1983-01-20

Family

ID=15521487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15157478A Expired JPS583293B2 (en) 1978-12-07 1978-12-07 Manufacturing method for magnetic disk media

Country Status (1)

Country Link
JP (1) JPS583293B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6935925B1 (en) 2004-06-30 2005-08-30 Hitachi Global Storage Technologies Netherlands B.V. System, method, and apparatus for in-situ acoustic emission monitoring of burnish heads in production during magnetic media cleaning or burnish process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6935925B1 (en) 2004-06-30 2005-08-30 Hitachi Global Storage Technologies Netherlands B.V. System, method, and apparatus for in-situ acoustic emission monitoring of burnish heads in production during magnetic media cleaning or burnish process

Also Published As

Publication number Publication date
JPS583293B2 (en) 1983-01-20

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