Cartridge-contained recording medium
AssigneeSony Corporation
InventorsHiroshi Miura, Hirokazu Odagiri
Life of this patent
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Abstract
In a magneto-optical disc contained in a cartridge, a first dielectric layer, signal recording layer, second dielectric layer, and light reflecting layer are sequentially stacked on a substrate having formed grooves, and a first protective layer, print layer using at least one color and second protective layer are sequentially stacked on the light reflecting layer. Thickness of the second protective layer is not smaller than that of the print layer, and thickness of the first protective layer is not smaller than 2 μm. Thus the recording medium having the print layer on at least one surface maintains a sufficient resistance to corrosion and a good slidableness.
Claims7
A cartridge-contained recording medium in which a recording medium is contained in a cartridge, said medium comprising a base body on which are stacked in sequence:
- a first dielectric layer;
- a signal recording layer;
- a second dielectric layer;
- a light reflecting layer;
- a first protective layer, a print layer;
- a print layer on which information can be printed;
- and
- a second protective layer, said second protective layer having a thickness not smaller than a thickness of said print layer and having at least a portion through which printed information on print layer can be perceived.
Dependencies are inferred from the claim text.