JPS54100769A - Aurface accuracy meter for magnetic disc substrate - Google Patents

Aurface accuracy meter for magnetic disc substrate

Info

Publication number
JPS54100769A
JPS54100769A JP692178A JP692178A JPS54100769A JP S54100769 A JPS54100769 A JP S54100769A JP 692178 A JP692178 A JP 692178A JP 692178 A JP692178 A JP 692178A JP S54100769 A JPS54100769 A JP S54100769A
Authority
JP
Japan
Prior art keywords
substrate
position detecting
magnetic disc
disc substrate
signals
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
JP692178A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6257922B2 (cs
Inventor
Hidekazu Takizawa
Toshimi Kuno
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 JP692178A priority Critical patent/JPS54100769A/ja
Publication of JPS54100769A publication Critical patent/JPS54100769A/ja
Publication of JPS6257922B2 publication Critical patent/JPS6257922B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
JP692178A 1978-01-25 1978-01-25 Aurface accuracy meter for magnetic disc substrate Granted JPS54100769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP692178A JPS54100769A (en) 1978-01-25 1978-01-25 Aurface accuracy meter for magnetic disc substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP692178A JPS54100769A (en) 1978-01-25 1978-01-25 Aurface accuracy meter for magnetic disc substrate

Publications (2)

Publication Number Publication Date
JPS54100769A true JPS54100769A (en) 1979-08-08
JPS6257922B2 JPS6257922B2 (cs) 1987-12-03

Family

ID=11651697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP692178A Granted JPS54100769A (en) 1978-01-25 1978-01-25 Aurface accuracy meter for magnetic disc substrate

Country Status (1)

Country Link
JP (1) JPS54100769A (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63105010U (cs) * 1986-12-26 1988-07-07
JPS63204110A (ja) * 1987-02-18 1988-08-23 Hitachi Zosen Gijutsu Kenkyusho:Kk 平面形状精度計測方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02113462A (ja) * 1988-10-21 1990-04-25 Matsushita Electric Ind Co Ltd テープレコーダのリール機構のブレーキ装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63105010U (cs) * 1986-12-26 1988-07-07
JPS63204110A (ja) * 1987-02-18 1988-08-23 Hitachi Zosen Gijutsu Kenkyusho:Kk 平面形状精度計測方法

Also Published As

Publication number Publication date
JPS6257922B2 (cs) 1987-12-03

Similar Documents

Publication Publication Date Title
JPS5564662A (en) Self-compensator for magnetic disk memory unit
BE874543A (fr) Dispositif pour detecter l'etat de rotation d'un arbre, en particulier pour des enregistreurs sur bande
GB1245954A (en) Device for the detection of the rotational motion of a shaft
JPS54100769A (en) Aurface accuracy meter for magnetic disc substrate
JPS5646426A (en) Volumetric device of powder/grain substance
Smoot et al. Measurement of discharge by the moving-boat method
JPS5542362A (en) Automatic measuring instrument for tape-recorder rotational characteristics
JPS57138074A (en) Detector for tape winding amount
JPS5210720A (en) Tape residue notification device
JPS54123969A (en) Rotary type sectional shape measuring apparatus
JPS5793236A (en) Data analyzing apparatus for super centrifugal machine
GB1506397A (en) Shaft encoders
JPS55140117A (en) Measuring apparatus for vibration of rotating vane
SU125894A1 (ru) Способ проверки кинематической точности зубофрезерных станков
Korzunin et al. Accuracy of Texture Determinations With a Magnetic Texturometer
JPS54100706A (en) Reference signal writing device for magnetic tape
FI83454B (fi) Foerfarande foer bestaemning av vridmoment och effekt hos axlar genom att maeta intervall beroende pao varvtalet och vridmomentet.
US3559295A (en) Device for measuring inclination
JPS6459101A (en) Eccentricity value measuring apparatus for rotor
JPS5612506A (en) Method and apparatus for gauging long line object
GB844731A (en) An instrument for measuring and recording fluctuations in the speed of revolution of rotating shafts or linear speed of material having a linear movement
JPS56118610A (en) Digital length measuring machine by spiral locus
JPS5764133A (en) Method for measuring quantity of static unbalance
JPS57128809A (en) Length measuring device for steel material
JPS56122961A (en) Rotation speed detecting device