JPS5350805A - Production of high recording density magnetic disc - Google Patents

Production of high recording density magnetic disc

Info

Publication number
JPS5350805A
JPS5350805A JP12497976A JP12497976A JPS5350805A JP S5350805 A JPS5350805 A JP S5350805A JP 12497976 A JP12497976 A JP 12497976A JP 12497976 A JP12497976 A JP 12497976A JP S5350805 A JPS5350805 A JP S5350805A
Authority
JP
Japan
Prior art keywords
recording density
high recording
production
magnetic disc
density magnetic
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
JP12497976A
Other languages
Japanese (ja)
Inventor
Yoshio Nakagawa
Yoshiyuki Tsujita
Kenji Nakamura
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 JP12497976A priority Critical patent/JPS5350805A/en
Publication of JPS5350805A publication Critical patent/JPS5350805A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To lower the cost of underlying plating films necessary for obtaining magnetic discs of high quality and high recording density by using flat and smooth electric copper-zinc alloy plating films.
COPYRIGHT: (C)1978,JPO&Japio
JP12497976A 1976-10-20 1976-10-20 Production of high recording density magnetic disc Pending JPS5350805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12497976A JPS5350805A (en) 1976-10-20 1976-10-20 Production of high recording density magnetic disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12497976A JPS5350805A (en) 1976-10-20 1976-10-20 Production of high recording density magnetic disc

Publications (1)

Publication Number Publication Date
JPS5350805A true JPS5350805A (en) 1978-05-09

Family

ID=14898931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12497976A Pending JPS5350805A (en) 1976-10-20 1976-10-20 Production of high recording density magnetic disc

Country Status (1)

Country Link
JP (1) JPS5350805A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61168121A (en) * 1985-01-18 1986-07-29 Denka Himaku Kogyo Kk Disk for magnetic recording

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4720803U (en) * 1971-03-19 1972-11-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4720803U (en) * 1971-03-19 1972-11-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61168121A (en) * 1985-01-18 1986-07-29 Denka Himaku Kogyo Kk Disk for magnetic recording

Similar Documents

Publication Publication Date Title
JPS52122213A (en) Production of ferromagnetic metal powder
JPS5385403A (en) Manufacture of magnetic recording medium
JPS51135521A (en) Magnetic recording reproduction device
JPS5350805A (en) Production of high recording density magnetic disc
JPS51123510A (en) Degree recording method
JPS5367406A (en) Magnetic recording medium and its production
JPS5226815A (en) Magnetic head
JPS51124904A (en) Magnetic recording medium
JPS5326103A (en) Production of high recording density magnet ic discs
JPS5233713A (en) Thin film magnetic head
JPS5217811A (en) Floating type magnetic head
JPS52146202A (en) Magnetic recording film
JPS52141609A (en) Magnetic recording medium and its production
JPS51115728A (en) Method of recroding and reproducing the color image
JPS5234616A (en) Magnetic video recording reproduction equipment
JPS5333527A (en) Adjustment of magnetic recording/reproducing unit
JPS5336205A (en) Manufacture of magnetic disk of high recording density
JPS5342805A (en) Tape recorder for appreciation and practice at music and tape used in that tape recorder
JPS51138409A (en) Magnetic recording medium
JPS5350816A (en) Floating type magnetic head
JPS51115803A (en) Magnetic recording material
JPS5373118A (en) Positioning system for magnetic disk apparatus
JPS522536A (en) Method of recording by passage of an electric current and a medium the refor
JPS5310413A (en) Magnetic head of thin film type
JPS53128307A (en) Production of magnetic disc of high recording density