Replication of carriers bearing digitally recorded information

Details Replication of carriers bearing digitally recorded information Replication of carriers bearing digitally recorded information

1989-09-18

1990-07-24

Arnold, Bruce Y.

Static information storage and retrieval

Magnetic bubbles

Guide structure

365125, 350 36, G03H 122, G03H 120, G11C 1304

Patent

active

049431269

ABSTRACT:
The holographic manufacture of Compact Discs has three stages namely mastering, production of the sub-master holograms and replication. In the production stage, a holographic plate, spacer and master transparency are positioned against a prism, and then illuminated with split beams from a laser in order to record a hologram, at the plate, of the master transparency. The resultant hologram of the plate is then mass replicated on polycarbonate or photochromic discs to produce compact Discs compatible to conventional Compact Disc players.

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