Method for producing an information carrier disc

专利名称：Method for producing an information carrier

disc

发明人：Heinz Borchard申请号：US06/039573申请日：19790516公开号：US04234394A公开日：19801118

摘要：A method for producing a record copy disc by cutting a spiral groove into anoriginal provided with a centering formation centered relative to the spiral groove,electrochemically transferring the groove pattern from the original to a master andforming the copy disc from the master, the step of transferring is performed so as toreproduce the centering formation electrochemically on the master, and the step offorming the copy disc is performed so as to form a centering formation on the copy discfrom the reproduced centering formation on the master.

申请人：TELDEC TELEFUNKEN-DECCA SCHALLPLATTEN GMBH

代理机构：Spencer & Kaye

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