Optical disk and method for manufacturing the same
AssigneeKabushiki Kaisha Toshiba
InventorKoji Takazawa
Life of this patent
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Abstract
A first substrate is formed to include a surface on which a first record layer is formed, and which includes an inner circumferential portion on which a ring-shaped member is provided. Ultraviolet curing resin is dropped onto part of the surface which is located inward of the ring-shaped member, and the first substrate is then spun to coat the first record layer with the ultraviolet curing resin. Furthermore, a second substrate is formed to include a surface on which a second record layer is formed, and the second substrate is spun to coat the second record layer with ultraviolet curing resin. Then, the first and second record layers are made to face each other, and the first and second substrates are bonded to each other by the ultraviolet curing resin.
Claims2
An optical disk comprising:
- a first substrate including a first surface on which a first record layer is formed;
- a second substrate including a second surface on which a second record layer is formed, and which includes a non-record region on which a ring-shaped member is formed, the non-record region being located inward of a predetermined radius;
- and
- a light-transmissive spacer,
- wherein the first and second record layers are located opposite to each other, and a gap between the first and second layers is filled with the spacer layer.
-9. (canceled)
Dependencies are inferred from the claim text.