Pre-formatted moth-eye type optical data storage member and meth

Details Pre-formatted moth-eye type optical data storage member and meth Pre-formatted moth-eye type optical data storage member and meth

1988-02-26

1989-09-12

Richardson, Robert L.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

350 16, 365127, G11B 700

Patent

active

048666963

ABSTRACT:
A pre-formatted optical data storage member is described in which format zones are generated by the provision in the surface of the optical medium of a "moth-eye" structure, i.e. regular surface pattern in the form of an arrangement of grooves or protuberances. The pitch and depth of the pattern is such that when irradiated with illumination of predetermined optical characteristics, the format zones display a reflectivity substantially lower than that of the remainder of the optical storage member. Methods of producing optical data storage members with such pre-formatting are also described.

REFERENCES:
patent: 4322125 (1982-03-01), Warren
patent: 4402061 (1983-08-01), Hazel et al.

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