Title: Disc recording provided with legible matter

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.

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Inventors: Borchard, Heinz (Nortorf, DT)
Grottker, Gunter (Nortorf, DT)
Thun, Peter (Felde, DT)

Application Number: 548887
Filing Date: 1975-02-10
Publication_date: 1978-01-03
Assignee: TED Bildplatten Aktiengesellschaft AEG-Telefunken-Teldec (Zug, CH)
Primary Class(es): 369/280 369/287
Other Classes:
US Patent Ref:

648396	May, 1900	Eaton	33/81.
964685	Jul, 1910	Owen	274/42.
2002393	May, 1935	Freed et al.	178/6.
2200866	May, 1940	Thompson	274/42.
2664043	Dec, 1953	Dalton	178/6.
3719121	Mar, 1973	Okell et al.	90/11.

Other Refs:
Primary Examiner: Aegerter, Richard E.
Assistant Examiner: Shepperd, John W.
Attorney: Spencer & Kaye