Method of marking disc-shaped information carriers

Chemistry: electrical and wave energy – Processes and products

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C25D 110

Patent

active

048348430

ABSTRACT:
In a method of marking optically readable disc-shaped information carriers which are manufactured, for example, by a transfer-moulding process using at least one mould serving as a stamper, which mould has been derived from a master via at least two electroforming replication steps, the mould is provided with a marking for the subsequent indentification of the mould, which marking is situated in an otherwise information-free area of the information carrier to be manufactured and allows the mould thus marked to be identified.

REFERENCES:
patent: 1011838 (1911-12-01), Owen

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