JPS5514538A - High density magnetic recording media - Google Patents

High density magnetic recording media

Info

Publication number
JPS5514538A
JPS5514538A JP8709778A JP8709778A JPS5514538A JP S5514538 A JPS5514538 A JP S5514538A JP 8709778 A JP8709778 A JP 8709778A JP 8709778 A JP8709778 A JP 8709778A JP S5514538 A JPS5514538 A JP S5514538A
Authority
JP
Japan
Prior art keywords
unevenness
coating
high density
magnetic recording
recording media
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
JP8709778A
Other languages
Japanese (ja)
Inventor
Yoshiro Nakamatsu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8709778A priority Critical patent/JPS5514538A/en
Publication of JPS5514538A publication Critical patent/JPS5514538A/en
Pending legal-status Critical Current

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  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To reduce the probability of head crash, to protect the magnetic layer even with head crash and to reduce the probability of error occurrence, by increasing the recording density through the coating of snake oil on the magnetic layer.
CONSTITUTION: On the Al substrate 1 of disc shape, the magnetic coating 2 is applied so that thick external circumference and thin inner circumference can be obtained, and further on it, the snake oil 3 is uniformly applied. The surface 11 of the substrate 1 has microscopically unevenness even with fine polish, and the surface 21 of the coating 2 also has unevenness. But, the surface tension and viscosity of the oil 3 makes the upper surface 31 flat even with unevenness of the lower surface 21 and lubrication action can also be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP8709778A 1978-07-19 1978-07-19 High density magnetic recording media Pending JPS5514538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8709778A JPS5514538A (en) 1978-07-19 1978-07-19 High density magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8709778A JPS5514538A (en) 1978-07-19 1978-07-19 High density magnetic recording media

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP57202079A Division JPS58146030A (en) 1982-11-19 1982-11-19 Magnetic recording medium having inclined snake oil surface

Publications (1)

Publication Number Publication Date
JPS5514538A true JPS5514538A (en) 1980-02-01

Family

ID=13905437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8709778A Pending JPS5514538A (en) 1978-07-19 1978-07-19 High density magnetic recording media

Country Status (1)

Country Link
JP (1) JPS5514538A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929445A (en) * 1972-07-20 1974-03-15
JPS5379502A (en) * 1976-12-24 1978-07-14 Hitachi Ltd Manufacture of magnetic disk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929445A (en) * 1972-07-20 1974-03-15
JPS5379502A (en) * 1976-12-24 1978-07-14 Hitachi Ltd Manufacture of magnetic disk

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