JPS5687230A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5687230A
JPS5687230A JP16379579A JP16379579A JPS5687230A JP S5687230 A JPS5687230 A JP S5687230A JP 16379579 A JP16379579 A JP 16379579A JP 16379579 A JP16379579 A JP 16379579A JP S5687230 A JPS5687230 A JP S5687230A
Authority
JP
Japan
Prior art keywords
substrate
copper
forming
recording medium
base
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
JP16379579A
Other languages
Japanese (ja)
Inventor
Takayuki Toko
Tsunemi Oiwa
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 JP16379579A priority Critical patent/JPS5687230A/en
Publication of JPS5687230A publication Critical patent/JPS5687230A/en
Pending legal-status Critical Current

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  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To prevent thermal deformation effectively and to improve magnetic characteristics by forming a substrate of copper on a base and then by forming a ferromagnetic metallic film on the substrate.
CONSTITUTION: On a base of a plastic film, nonmagnetic metallic film, etc., a substrate made of copper which can reflect radiant heat with extremely high reflectivity is vapor-deposited to a thickness of 100W2,000Å. To the substrate, a metallic simple substance such as cobalt, nickel and iron, their alloy or oxide, and a ferromagnetic material such as Co-P and Co-Ni-P are bonded by vapor deposition, ion plating, sputtering, plating, etc.
COPYRIGHT: (C)1981,JPO&Japio
JP16379579A 1979-12-17 1979-12-17 Magnetic recording medium Pending JPS5687230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16379579A JPS5687230A (en) 1979-12-17 1979-12-17 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16379579A JPS5687230A (en) 1979-12-17 1979-12-17 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5687230A true JPS5687230A (en) 1981-07-15

Family

ID=15780839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16379579A Pending JPS5687230A (en) 1979-12-17 1979-12-17 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5687230A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002319120A (en) * 2001-04-24 2002-10-31 Toray Ind Inc Substrate for magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002319120A (en) * 2001-04-24 2002-10-31 Toray Ind Inc Substrate for magnetic recording medium

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