JPS55129936A - Vanisher - Google Patents

Vanisher

Info

Publication number
JPS55129936A
JPS55129936A JP3689079A JP3689079A JPS55129936A JP S55129936 A JPS55129936 A JP S55129936A JP 3689079 A JP3689079 A JP 3689079A JP 3689079 A JP3689079 A JP 3689079A JP S55129936 A JPS55129936 A JP S55129936A
Authority
JP
Japan
Prior art keywords
disc
force
vanish
vanishing
head
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
JP3689079A
Other languages
Japanese (ja)
Inventor
Makoto Oishi
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 JP3689079A priority Critical patent/JPS55129936A/en
Publication of JPS55129936A publication Critical patent/JPS55129936A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To subject the surface of a recording medium to vanish finishing surely and stably, by controlling rotation drive of the disc-shaped recording medium according to force acted on a vanishing head.
CONSTITUTION: Force corresponding to vanish force is applied to vanishing head 2 incorporated in carriage 9. Force changed by the relative speed between rotating magnetic disc 1 and head 2 is detected by sensor 3 such as a strain gauge, and motor 6 for driving disc 1 is controlled through motor driving circuit 7 according to the detection output, and rotation drive of disc 1 is so controlled that vanish force may be a value within a required proper range, thus vanishing and smoothing always protrusions in the inside part and the outside part of disc 1, which are different in rotation speed, surely and stably independently of heavy and light loads.
COPYRIGHT: (C)1980,JPO&Japio
JP3689079A 1979-03-30 1979-03-30 Vanisher Pending JPS55129936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3689079A JPS55129936A (en) 1979-03-30 1979-03-30 Vanisher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3689079A JPS55129936A (en) 1979-03-30 1979-03-30 Vanisher

Publications (1)

Publication Number Publication Date
JPS55129936A true JPS55129936A (en) 1980-10-08

Family

ID=12482363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3689079A Pending JPS55129936A (en) 1979-03-30 1979-03-30 Vanisher

Country Status (1)

Country Link
JP (1) JPS55129936A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58200432A (en) * 1982-05-19 1983-11-22 Hitachi Ltd Manufacturing method for magnetic disk media

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58200432A (en) * 1982-05-19 1983-11-22 Hitachi Ltd Manufacturing method for magnetic disk media

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