MAGNETIC RECORDING MEDIUM
내용없음 A magnetic recording medium improved in the magnetic recording characteristics, running properties and durability is disclosed. The magnetic recording medium comprises a non-magnetic support having on a side of the support an upper magnetic layer positioned farther from the support and a lower...
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Main Authors | , , , , , |
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Format | Patent |
Language | English Korean |
Published |
01.06.1999
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Abstract | 내용없음
A magnetic recording medium improved in the magnetic recording characteristics, running properties and durability is disclosed. The magnetic recording medium comprises a non-magnetic support having on a side of the support an upper magnetic layer positioned farther from the support and a lower magnetic layer positioned closer to the support. The upper magnetic layer comprises a binder, a magnetic powder having an original BET specific surface area of not less than than 30 m /g and at least one abrasive selected from alumina, silicon carbide, Cr2O3, silica, alpha -Fe2O3, TiO2 and zilconia in a portion of 3 to 20 parts per 100 parts by weight of the magnetic powder, and the lower magnetic layer comprises a binder and a magnetic powder having an original BET specific surface area of less than 30 m /g, and kinds of the binders each contained in the upper magnetic layer and the lower magnetic layer are the same. |
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AbstractList | 내용없음
A magnetic recording medium improved in the magnetic recording characteristics, running properties and durability is disclosed. The magnetic recording medium comprises a non-magnetic support having on a side of the support an upper magnetic layer positioned farther from the support and a lower magnetic layer positioned closer to the support. The upper magnetic layer comprises a binder, a magnetic powder having an original BET specific surface area of not less than than 30 m /g and at least one abrasive selected from alumina, silicon carbide, Cr2O3, silica, alpha -Fe2O3, TiO2 and zilconia in a portion of 3 to 20 parts per 100 parts by weight of the magnetic powder, and the lower magnetic layer comprises a binder and a magnetic powder having an original BET specific surface area of less than 30 m /g, and kinds of the binders each contained in the upper magnetic layer and the lower magnetic layer are the same. |
Author | KAWAHARA, SETSUKO TOBISAWA, SEIICHI NAKANO, YASUSHI UMEMURA, MASAHIRO NAKAJIMA, TAKESHI OONUMA, KIKUO |
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Snippet | 내용없음
A magnetic recording medium improved in the magnetic recording characteristics, running properties and durability is disclosed. The magnetic recording... |
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SubjectTerms | ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PHYSICS POLISHES USE OF MATERIALS THEREFOR WOODSTAINS |
Title | MAGNETIC RECORDING MEDIUM |
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