Method for manufacturing optical disk with address and guide gro

Details Method for manufacturing optical disk with address and guide gro Method for manufacturing optical disk with address and guide gro

1985-02-13

1988-03-22

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Forming nonplanar surface

430323, 430325, 430327, 430394, 430945, 346 76L, G03C 500

Patent

active

047328444

ABSTRACT:
A method for manufacturing an optical disk having both address pits and guide grooves having accurately controlled depths and widths. Two different types of sensitive materials of different characteristics are applied to a recording original board to form inner and outer layers thereon. The inner and outer layers are exposed and partially removed independently of each other so that the depth and width of the guide grooves and address pits can be set to desired values with high accuracy.

REFERENCES:
patent: 4109045 (1978-08-01), Goshima et al.
patent: 4387381 (1983-06-01), Bell

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