Optical recording disk

Details Optical recording disk Optical recording disk

1988-05-26

1991-07-30

Levy, Stuart S.

Dynamic information storage or retrieval

Storage medium structure

Layered

369286, 369288, G11B 370, G11B 584

Patent

active

050365100

ABSTRACT:
An optical recording disk of air sandwich type includes a transparent disk carrying a transferring layer and a protection disk which are symmetrically disposed with respect to a central plane between the transparent and protection disks, the protection disk being the same as the transparent disk in material and shape and having a dummy layer which is the same as the transferring layer in material and shape.

REFERENCES:
patent: 4683562 (1987-07-01), Matsui et al.
patent: 4716063 (1987-12-01), Uehara et al.
patent: 4871601 (1989-10-01), Miura et al.
patent: 4871602 (1989-10-01), Miura et al.

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