MAGNETIC RECORDING MEDIUM

PURPOSE:To provide a decrease in running friction, an improvement in running durability and still durability and a decrease in drop-out by incorporating the compd. expressed by the specific chemical formula and unsatd. chain hydrocarbon of 10-22C into a top coat film. CONSTITUTION:The top coat film...

Full description

Saved in:
Bibliographic Details
Main Authors OKA SACHIYO, TAKASUGI YASUSHI, IZUMI TOSHIAKI
Format Patent
LanguageEnglish
Published 20.12.1985
Subjects
CHEMISTRY
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PHYSICS
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
Online AccessGet full text

Cover

More Information
Summary:PURPOSE:To provide a decrease in running friction, an improvement in running durability and still durability and a decrease in drop-out by incorporating the compd. expressed by the specific chemical formula and unsatd. chain hydrocarbon of 10-22C into a top coat film. CONSTITUTION:The top coat film consisting of the compd. expressed by formula I and unsatd. chain hydrocarbon is provided on a magnetic layer which consists essentially of Co and is formed by a diagonal vapor deposition method on a base body. Such top coat film is formed with gaseous phase deposition by vapor deposition or sputtering to the thickness of a monomolecular layer or above and 5-100Angstrom . In formula I, R1 denotes an alkyl group of 10-22C, Y1, Y2 denote hydrogen, R1 or the cation of a metal or onium, Y1, Y2 may form a bivalent cation in combination. The decreased running friction, improved running durability and decreased drop-out are resulted when the number of carbon atoms of R1 is 12-22.
Bibliography:Application Number: JP19840115092