Method of manufacturing master for optical information carrier

Details Method of manufacturing master for optical information carrier Method of manufacturing master for optical information carrier

1986-05-16

1988-03-08

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Forming nonplanar surface

430329, 430397, 430945, 346 76L, 2041296, 20412965, 20412995, G03C 500

Patent

active

047299401

ABSTRACT:
For manufacturing a master for the replication of optical discs a plate of fine-grained copper is coated with a photoresist and exposed by a laser beam which is turned on and off in accordance with information to be recorded on the disc. After developing the photoresist, the exposed portions of the copper layer is etched to a predetermined depth and the photoresist stripped from the etched copper surface.

REFERENCES:
patent: 3894179 (1975-07-01), Jacobs et al.
patent: 4356254 (1982-10-01), Takahashi et al.
patent: 4423137 (1983-12-01), Rester
Miyaoka, "Manufacturing Technology of the Compact Disc," Digital Audio, pp. 196-201.
Castrignano, "Video Disc Technology-A Tutorial Survey," J. Photographic (Applied) Engineering, vol. 4 (1), 1978, pp. 1-8.

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