JPS52153708A - Magnetic disc and its manufacture - Google Patents

Magnetic disc and its manufacture

Info

Publication number
JPS52153708A
JPS52153708A JP7053176A JP7053176A JPS52153708A JP S52153708 A JPS52153708 A JP S52153708A JP 7053176 A JP7053176 A JP 7053176A JP 7053176 A JP7053176 A JP 7053176A JP S52153708 A JPS52153708 A JP S52153708A
Authority
JP
Japan
Prior art keywords
manufacture
magnetic disc
disc
magnetic
proximity
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
JP7053176A
Other languages
Japanese (ja)
Other versions
JPS5921088B2 (en
Inventor
Morimasa Nagao
Kozo Nishimoto
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.)
JAPAN ELECTRONIC IND DEV ASSOC<JEIDA>
NIPPON DENSHI KOGYO SHINKO
NEC Corp
Original Assignee
JAPAN ELECTRONIC IND DEV ASSOC<JEIDA>
NIPPON DENSHI KOGYO SHINKO
NEC Corp
Nippon Electric Co 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 JAPAN ELECTRONIC IND DEV ASSOC<JEIDA>, NIPPON DENSHI KOGYO SHINKO, NEC Corp, Nippon Electric Co Ltd filed Critical JAPAN ELECTRONIC IND DEV ASSOC<JEIDA>
Priority to JP7053176A priority Critical patent/JPS5921088B2/en
Publication of JPS52153708A publication Critical patent/JPS52153708A/en
Publication of JPS5921088B2 publication Critical patent/JPS5921088B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture a magnetic disc of uniform recording/regeneration properties over an extensive range by increasing the residual magnetic flux density and reducing the magnetic resisting force proportional to the proximity to the external circumference of a disc.
COPYRIGHT: (C)1977,JPO&Japio
JP7053176A 1976-06-16 1976-06-16 Magnetic disk manufacturing method Expired JPS5921088B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7053176A JPS5921088B2 (en) 1976-06-16 1976-06-16 Magnetic disk manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7053176A JPS5921088B2 (en) 1976-06-16 1976-06-16 Magnetic disk manufacturing method

Publications (2)

Publication Number Publication Date
JPS52153708A true JPS52153708A (en) 1977-12-21
JPS5921088B2 JPS5921088B2 (en) 1984-05-17

Family

ID=13434200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7053176A Expired JPS5921088B2 (en) 1976-06-16 1976-06-16 Magnetic disk manufacturing method

Country Status (1)

Country Link
JP (1) JPS5921088B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101032A (en) * 1982-11-30 1984-06-11 Hitachi Condenser Co Ltd Manufacture of magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101032A (en) * 1982-11-30 1984-06-11 Hitachi Condenser Co Ltd Manufacture of magnetic recording medium

Also Published As

Publication number Publication date
JPS5921088B2 (en) 1984-05-17

Similar Documents

Publication Publication Date Title
JPS52122213A (en) Production of ferromagnetic metal powder
JPS51147312A (en) Magnetic head
JPS52153708A (en) Magnetic disc and its manufacture
JPS51129202A (en) Magnetic recording medium
JPS52140304A (en) Magnetic record/reproduce device
JPS5226815A (en) Magnetic head
JPS5376803A (en) Turntable sheet
JPS5378807A (en) Magnetic recorder and preparation thereof
JPS5216202A (en) Manufacturing method of magnetic recording medium
JPS5330800A (en) Peparing magnetic thin film
JPS51123113A (en) Medium for magnetic recording
JPS5295097A (en) Magnetic recording material
JPS5233713A (en) Thin film magnetic head
JPS5233512A (en) Film magnetic head
JPS534895A (en) Manufacture of needle-shaped magnetic iron particles
JPS528807A (en) Magnetic recording medium
JPS5249500A (en) Mnbi alloy magnetic material with excellent oxidation stability
JPS51149007A (en) Magnetic recording medium
JPS52153407A (en) Magnetic recording medium
JPS5236519A (en) Magnetic alloy
JPS5350816A (en) Floating type magnetic head
JPS5236517A (en) Magnetic alloy
JPS5223909A (en) Magnetic recording reproducing device
JPS51115803A (en) Magnetic recording material
JPS5245096A (en) Magnetic material of mnbi alloy with excellent oxidation stability