Disc recording provided with legible matter

Details Disc recording provided with legible matter Disc recording provided with legible matter

1975-02-10

1978-01-03

Aegerter, Richard E.

Undertaking

G11B 300

Patent

active

040662683

ABSTRACT:
In the production of disc recordings, the label portion therefor is formed by tracing a pattern of essentially circular grooves or arrays of dots and groove or dot-free areas in the location of the label portion, the grooved areas contrasting visually with the groove-free areas and the pattern being such that one type of area, preferably the groove-free areas, forms the legible characters and patterns to appear in the label portion.

REFERENCES:
patent: 648396 (1900-05-01), Eaton
patent: 964685 (1910-07-01), Owen
patent: 2002393 (1935-05-01), Freed et al.
patent: 2200866 (1940-05-01), Thompson
patent: 2664043 (1953-12-01), Dalton
patent: 3719121 (1973-03-01), Okell et al.

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