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US 7,604,878 B2Granted
Magneto-optical recording medium and layer structure
AssigneeSanyo Electric Co., Ltd.
InventorsMorio Nakatani, Satoshi Sumi
Life of this patent
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Abstract
A layered magneto-optical recording medium including a substrate and a magnetic layer. The magnetic layer includes columnar projections, which are formed on a film surface of the magnetic layer as arranged in a lengthwise direction and a crosswise direction with a pitch smaller than a wavelength of the laser light.
Claims5
A magneto-optical recording medium to which recording and reproduction are performed using a laser light and an external magnetic field, comprising:
- a substrate;
- and
- a magnetic layer disposed on the substrate, wherein
- the magnetic layer comprises a plurality of columnar projections arranged evenly on a film surface of the magnetic layer with a pitch, smaller than a wavelength of the laser light, in both a lengthwise direction and a crosswise direction.
1 more element
Dependencies are inferred from the claim text.