Optical recording disc and related method of manufacture

Details Optical recording disc and related method of manufacture Optical recording disc and related method of manufacture

1979-08-20

1981-04-28

Miller, Jr., George H.

Recorders

Record receivers and/or driving means therefor

Laminated, impregnated, or coated bases

346137, G01D 1534

Patent

active

042649110

ABSTRACT:
A direct-read-after-write optical recording disc having a pair of transparent, disc-shaped members, each being formed with integral inner and outer ring-shaped bosses on one of its sides. A thin recording layer of a light-sensitive material is coated on each disc-shaped member, in a shallow annular recess formed between its two ring-shaped bosses, and the two members are disposed in a coaxial relationship, with their respective bosses in abutment with each other, whereby the two recording layers are located within a sealed, annular chamber.

REFERENCES:
patent: 4038663 (1977-07-01), Day et al.
patent: 4074282 (1978-02-01), Balas, Jr. et al.

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