JPS54140997A - Magnetic memory medium - Google Patents

Magnetic memory medium

Info

Publication number
JPS54140997A
JPS54140997A JP4954778A JP4954778A JPS54140997A JP S54140997 A JPS54140997 A JP S54140997A JP 4954778 A JP4954778 A JP 4954778A JP 4954778 A JP4954778 A JP 4954778A JP S54140997 A JPS54140997 A JP S54140997A
Authority
JP
Japan
Prior art keywords
substrate
evaporation material
vapor coating
shaft
forming
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
JP4954778A
Other languages
Japanese (ja)
Other versions
JPS5738016B2 (en
Inventor
Koichi Shinohara
Toshiaki Kunieda
Hisao Matsuura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4954778A priority Critical patent/JPS54140997A/en
Publication of JPS54140997A publication Critical patent/JPS54140997A/en
Publication of JPS5738016B2 publication Critical patent/JPS5738016B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)

Abstract

PURPOSE: To improve signal-to-noise ratio in high range of a Co-based ferromagnetic film using no binder by forming a ferromagnetic layer (formed by vapor coating on a substrate) using Co as a main ingredient and adding an additive consisting mainly of a specified amount of Ni.
CONSTITUTION: Inside a vacuum tank 2 evacuated by a vacuum exhaust system 15 and maintained in an oxidizing atmosphere, a high polymer mole substrate 1 is fed from a reel-off shaft 18 to a take-up shaft 19 through cooling cans 3 and 4. In the positions facing the cans 3 and 4, there are arranged an evaporation material 5 for forming a non-magnetic layer of a thickness of about 0.02W0.05 μ on the substrate 1, a Co evaporation material 6, and a Ni evaporation material 7. The materials are heated by electronic guns 8W10 and evaporated. The guns 9 and 10 are so adjusted that the Co-Ni ferromagnetic layer formed on the substrate 1 will contain 0.01W0.3 wt% of Ni. This binary vapor coating may be replaced with vapor coating of a Co-Ni ingot.
COPYRIGHT: (C)1979,JPO&Japio
JP4954778A 1978-04-25 1978-04-25 Magnetic memory medium Granted JPS54140997A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4954778A JPS54140997A (en) 1978-04-25 1978-04-25 Magnetic memory medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4954778A JPS54140997A (en) 1978-04-25 1978-04-25 Magnetic memory medium

Publications (2)

Publication Number Publication Date
JPS54140997A true JPS54140997A (en) 1979-11-01
JPS5738016B2 JPS5738016B2 (en) 1982-08-13

Family

ID=12834211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4954778A Granted JPS54140997A (en) 1978-04-25 1978-04-25 Magnetic memory medium

Country Status (1)

Country Link
JP (1) JPS54140997A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837841A (en) * 1981-08-28 1983-03-05 Sekisui Chem Co Ltd Production of magnetic recording medium
JPS58115633A (en) * 1981-12-28 1983-07-09 Sekisui Chem Co Ltd Manufacturing device of magnetic recording medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5749116U (en) * 1980-09-05 1982-03-19

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837841A (en) * 1981-08-28 1983-03-05 Sekisui Chem Co Ltd Production of magnetic recording medium
JPH0221051B2 (en) * 1981-08-28 1990-05-11 Sekisui Chemical Co Ltd
JPS58115633A (en) * 1981-12-28 1983-07-09 Sekisui Chem Co Ltd Manufacturing device of magnetic recording medium

Also Published As

Publication number Publication date
JPS5738016B2 (en) 1982-08-13

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