MAGNETIC RECORDING MEDIUM

• Main Authors: KOKADO YUICHI, KITO JUN, HONDA YOSHINORI
• Format: Patent
• Language: English
• Published: 01.02.1986
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; FUELS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; INKS; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICS; POLISHES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS

PURPOSE:To provide a magnetic recording medium which has the strength to withstand satisfactorily flawing, obviates sticking of a head and a low coefft. of friction by providing a lubricating layer consisting of an org. high-polmer compd. and boron compd. on the surface of a magnetic recording layer. CONSTITUTION:The magnetic recording layer 2 is formed on a substrate 1 and a solid lubricating film 3 consisting of the org. high polymer and boron compd. is coated on the surface of the layer 2. The high polymer includes a phenolic resin and polybenzothiazole resin. The boron compd. is exemplified by boron compd. such as Ta2, Mo2 and B and boron oxide such as B4O3 and B4O5. The degree of sticking of the head to the magnetic recording medium and the coefft. of friction of said medium are thus decreased and the strength to flawing is improved, by which the life is considerably extended.