JPS6479939A - Production of magnetic recording medium - Google Patents

Production of magnetic recording medium

Info

Publication number
JPS6479939A
JPS6479939A JP23688687A JP23688687A JPS6479939A JP S6479939 A JPS6479939 A JP S6479939A JP 23688687 A JP23688687 A JP 23688687A JP 23688687 A JP23688687 A JP 23688687A JP S6479939 A JPS6479939 A JP S6479939A
Authority
JP
Japan
Prior art keywords
plating
film
power supply
ferromagnetic metal
recording medium
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
JP23688687A
Other languages
Japanese (ja)
Inventor
Hideo Daimon
Osamu Inagoya
Hideo Fujiwara
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP23688687A priority Critical patent/JPS6479939A/en
Publication of JPS6479939A publication Critical patent/JPS6479939A/en
Pending legal-status Critical Current

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  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To suppress the gaseous hydrogen to be generated during Fe plating so as to improve plating efficiency and to prevent the exfoliation of an oxidized film by spalling, etc., by using a power supply of 100-1,000Hz AC frequencies at the time of producing a magnetic recording medium by packing the plating of a ferromagnetic metal by using the AC power supply into the fine pores formed by anodic oxidation of Al or Al alloy. CONSTITUTION:The Al film having a prescribed thickness is formed by a vacuum deposition method on a PART film having a prescribed thickness. This vapor deposited Al film is anodized in a sulfuric acid bath and the ferromagnetic metal is plated and packed into the formed fine pores by using the AC power supply. The AC power supply within the 100-1,000Hz or/and 200-800Hz range is used at this time. Fe, Co, Ni or the alloy thereof is adopted for the ferromagnetic metal. The gaseous hydrogen to be generated during the plating is suppressed, by which the plating efficiency is improved and the exfoliation of the oxide film by the spalling, etc., is prevented.
JP23688687A 1987-09-21 1987-09-21 Production of magnetic recording medium Pending JPS6479939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23688687A JPS6479939A (en) 1987-09-21 1987-09-21 Production of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23688687A JPS6479939A (en) 1987-09-21 1987-09-21 Production of magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS6479939A true JPS6479939A (en) 1989-03-24

Family

ID=17007235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23688687A Pending JPS6479939A (en) 1987-09-21 1987-09-21 Production of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS6479939A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01188695A (en) * 1988-01-25 1989-07-27 Alps Electric Co Ltd Method for plating anodic oxide film of aluminum with alloy
US5698385A (en) * 1994-02-21 1997-12-16 Soken Chemical & Engineering Co., Ltd. Silver halide photosensitive material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01188695A (en) * 1988-01-25 1989-07-27 Alps Electric Co Ltd Method for plating anodic oxide film of aluminum with alloy
US5698385A (en) * 1994-02-21 1997-12-16 Soken Chemical & Engineering Co., Ltd. Silver halide photosensitive material

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