Magnetic recording medium and method for producing same
AssigneeFuji Electric Co., Ltd.
InventorsHiroyuki Uwazumi, Tadaaki Oikawa, Naoki Takizawa
Life of this patent
Estimating the term…
Loading patent…
AssigneeFuji Electric Co., Ltd.
InventorsHiroyuki Uwazumi, Tadaaki Oikawa, Naoki Takizawa
Estimating the term…
The present invention provides a magnetic recording medium including at least a nonmagnetic undercoat layer, a nonmagnetic metallic intermediate layer, a magnetic layer, a protective film, and a liquid lubricant layer sequentially laminated on a nonmagnetic substrate, wherein the magnetic layer contains crystal grains having ferromagnetism and nonmagnetic grain boundaries surrounding the crystal grains, and the nonmagnetic metallic intermediate layer contains at least one layer, and the crystal structure of each layer being a hexagonal close-packed structure; and a method for producing the magnetic recording medium. The magnetic recording medium shows high coercive force Hc and a low medium noise, and its manufacturing cost is also low.
A magnetic recording medium comprising at least a nonmagnetic undercoat layer, a nonmagnetic metallic intermediate layer, a magnetic layer, a protective film, and a liquid lubricant layer sequentially laminated on a nonmagnetic substrate, wherein
A method for producing a magnetic recording medium comprising at least a nonmagnetic undercoat layer, a nonmagnetic metallic intermediate layer, a magnetic layer, a protective film, and a liquid lubricant layer laminated sequentially on a nonmagnetic substrate, comprising the steps of:
Dependencies are inferred from the claim text.