Laser recording and storage medium

Registers – Records

Patent

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235454, 430 10, 346 76L, 350361, 365106, 428209, 427 7, G06K 1900

Patent

active

046804587

ABSTRACT:
An optical data recording and information storage medium which uses an exposed and developed photosensitive medium with a transparent substrate to store prerecorded data spots. A reflective laser recording metal layer is vapor deposited on the processed photosensitive medium so as to create laser recordable areas adjacent to the prerecorded data. The entire assembly is mounted on a base which may be transparent. A laser is used to write data spots on the thin metal layer. Both the prerecorded data spots and the laser written data spots are read by observing optical contrast with respect to the surrounding field.

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