Optical disk for use in optical memory devices

Details Optical disk for use in optical memory devices Optical disk for use in optical memory devices

G - Physics

11

B

352/32.4

G11B 7/007 (2006.01) G11B 7/013 (2006.01) G11B 7/26 (2006.01)

Patent

CA 1303740

3763 -16- ABSTRACT OF THE DISCLOSURE An optical disk for use in optical memory devices comprises guide grooves and pits on one surface thereof, wherein the depth of the guide grooves is different from that of the pits and the distance from the bottom face of each of the guide grooves to the other surface of the optical disk opposite to the one surface of the optical disk on which the guide grooves and pits are disposed is the same as the distance from the bottom face of each of the pits to the other surface of the optical disk opposite to the one surface of the optical disk on which the guide grooves and pits are disposed, a method for the production of optical memory master plates that are used for the production of the above-mentioned optical disk.

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