Optical information recording substrate and method of making the

Details Optical information recording substrate and method of making the Optical information recording substrate and method of making the

1991-11-15

1995-03-14

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369273, G06K 1906

Patent

active

053982312

ABSTRACT:
An optical information recording substrate having a legible matter formed in a groove area thereof or a pit array area thereof, wherein the legible matter includes a plurality of grooves or pit arrays being partially different in the breadth or depth thereof. The grooves or arrays may be partially dislocated in the radial direction of the optical information recording substrate from a predetermined track. The visually legible matter may include a plurality of laser generated pit arrays wherein remaining portions of the legible matter have a plurality of continuous grooves formed therein. The legible matter may also include a plurality of continuous grooves wherein remaining portions of the legible matter includes a plurality of laser generated pit arrays formed therein.

REFERENCES:
patent: 4066268 (1978-01-01), Borchard et al.
patent: 4277071 (1981-07-01), Birt et al.
patent: 4341952 (1982-07-01), John et al.
patent: 4967286 (1990-10-01), Nomuia et al.

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