JPS52149105A - Preparation of magnetic disc with high recording density - Google Patents

Preparation of magnetic disc with high recording density

Info

Publication number
JPS52149105A
JPS52149105A JP6554776A JP6554776A JPS52149105A JP S52149105 A JPS52149105 A JP S52149105A JP 6554776 A JP6554776 A JP 6554776A JP 6554776 A JP6554776 A JP 6554776A JP S52149105 A JPS52149105 A JP S52149105A
Authority
JP
Japan
Prior art keywords
magnetic disc
preparation
recording density
high recording
priming
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
JP6554776A
Other languages
Japanese (ja)
Other versions
JPS5543174B2 (en
Inventor
Kenji Nakamura
Yoshiyuki Tsujita
Yoshio Nakagawa
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 JP6554776A priority Critical patent/JPS52149105A/en
Publication of JPS52149105A publication Critical patent/JPS52149105A/en
Publication of JPS5543174B2 publication Critical patent/JPS5543174B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To provide a disc covered on its entire surface with priming plated film in a uniform thickness, thereby making mechanical polishing easier at low cost, by using in combination a perforated obstructing plate and a supplemental cathode with substrate for magnetic disc at the time of priming plating.
COPYRIGHT: (C)1977,JPO&Japio
JP6554776A 1976-06-07 1976-06-07 Preparation of magnetic disc with high recording density Granted JPS52149105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6554776A JPS52149105A (en) 1976-06-07 1976-06-07 Preparation of magnetic disc with high recording density

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6554776A JPS52149105A (en) 1976-06-07 1976-06-07 Preparation of magnetic disc with high recording density

Publications (2)

Publication Number Publication Date
JPS52149105A true JPS52149105A (en) 1977-12-12
JPS5543174B2 JPS5543174B2 (en) 1980-11-05

Family

ID=13290138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6554776A Granted JPS52149105A (en) 1976-06-07 1976-06-07 Preparation of magnetic disc with high recording density

Country Status (1)

Country Link
JP (1) JPS52149105A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187700A (en) * 1984-03-07 1985-09-25 Fujitsu Ltd Power source system for plating
JPS62139900A (en) * 1985-12-13 1987-06-23 Mitsuboshi Belting Ltd Electrolytic plating device
JP2020002394A (en) * 2018-06-25 2020-01-09 株式会社ニコン Manufacturing method of aluminum coating film, manufacturing method of alumite coating film, resin member with aluminum coating film, and resin member with alumite coating film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187700A (en) * 1984-03-07 1985-09-25 Fujitsu Ltd Power source system for plating
JPS62139900A (en) * 1985-12-13 1987-06-23 Mitsuboshi Belting Ltd Electrolytic plating device
JP2020002394A (en) * 2018-06-25 2020-01-09 株式会社ニコン Manufacturing method of aluminum coating film, manufacturing method of alumite coating film, resin member with aluminum coating film, and resin member with alumite coating film

Also Published As

Publication number Publication date
JPS5543174B2 (en) 1980-11-05

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