GB2057298B - Magnetic recording media - Google Patents

Magnetic recording media

Info

Publication number: GB2057298B
Authority: GB; United Kingdom
Prior art keywords: magnetic recording; recording media; media; magnetic; recording
Prior art date: 1979-08-06
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.): Expired

Application number

GB8025718A

Other versions

GB2057298A (en

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.)

Sony Corp

Original Assignee

Sony Corp

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.)

1979-08-06

Filing date

1980-08-06

Publication date

1983-11-09

1979-08-06 Priority claimed from JP10014379A external-priority patent/JPS5625232A/en

1980-07-17 Priority claimed from JP9801280A external-priority patent/JPS5724028A/en

1980-07-17 Priority claimed from JP9801380A external-priority patent/JPS5724029A/en

1980-08-06 Application filed by Sony Corp filed Critical Sony Corp

1981-04-01 Publication of GB2057298A publication Critical patent/GB2057298A/en

1983-11-09 Application granted granted Critical

1983-11-09 Publication of GB2057298B publication Critical patent/GB2057298B/en

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
- G11B5/725—Protective coatings, e.g. anti-static or antifriction containing a lubricant, e.g. organic compounds
- G11B5/7253—Fluorocarbon lubricant

GB8025718A 1979-08-06 1980-08-06 Magnetic recording media Expired GB2057298B (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JP10014379A JPS5625232A (en)	1979-08-06	1979-08-06	Magnetic recording medium
JP9801280A JPS5724028A (en)	1980-07-17	1980-07-17	Magnetic recording medium
JP9801380A JPS5724029A (en)	1980-07-17	1980-07-17	Magnetic recording medium

Publications (2)

Publication Number	Publication Date
GB2057298A GB2057298A (en)	1981-04-01
GB2057298B true GB2057298B (en)	1983-11-09

Family

ID=27308546

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8025718A Expired GB2057298B (en)	1979-08-06	1980-08-06	Magnetic recording media

Country Status (3)

Country	Link
DE (1)	DE3029820A1 (en)
GB (1)	GB2057298B (en)
NL (1)	NL8004484A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS57169929A (en) *	1981-04-13	1982-10-19	Tdk Corp	Magnetic recording medium and its manufacture
EP0523607B1 (en) *	1991-07-15	1997-05-07	Matsushita Electric Industrial Co., Ltd.	Magnetic recording medium, sliding member and manufacturing method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1152651A (en) *	1966-05-16	1969-05-21	Agfa Gevaert Nv	Improved Magnetic Recording Material
US3542589A (en) *	1967-04-03	1970-11-24	Basf Ag	Magnetic recording media having high abrasion resistance
DE2100837C3 (en) *	1971-01-09	1975-05-15	Kayser, Lutz Tilo, 7000 Stuttgart	Circuit arrangement for operating a direct current electromagnet

1980
- 1980-08-06 DE DE19803029820 patent/DE3029820A1/en not_active Ceased
- 1980-08-06 NL NL8004484A patent/NL8004484A/en not_active Application Discontinuation
- 1980-08-06 GB GB8025718A patent/GB2057298B/en not_active Expired

Also Published As

Publication number	Publication date
NL8004484A (en)	1981-02-10
DE3029820A1 (en)	1981-03-26
GB2057298A (en)	1981-04-01

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Legal Events

Date	Code	Title	Description
1992-04-01	PCNP	Patent ceased through non-payment of renewal fee