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US 2003/0190495 A1Published application
Magnetic recording medium
AssigneeFuji Photo Film Co., Ltd.
InventorsKouichi Masaki, Takako Ozawa
Life of this patent
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Abstract
A magnetic recording medium comprising: a support; and at least a magnetic layer comprising a hexagonal ferrite powder and a binder, wherein the hexagonal ferrite powder is of magnetoplumbite type and has an average diameter of 15 to 35 nm and an alkaline earth element to iron ratio of 0.10 to 0.15 in terms of peak intensity ratio analyzed by electron spectroscopy for chemical analysis.
Claims10
A magnetic recording medium comprising:
- a support;
- and
- at least a magnetic layer comprising a hexagonal ferrite powder and a binder,
- wherein the hexagonal ferrite powder is of magnetoplumbite type and has an average diameter of 15 to 35 nm and an alkaline earth element to iron ratio of 0.10 to 0.15 in terms of peak intensity ratio analyzed by electron spectroscopy for chemical analysis.
1 more element
Dependencies are inferred from the claim text.