Device for cutting a sound groove on a disc recording medium
AssigneeVictor Company of Japan, Ltd.
InventorsYoshiro Nishiwaki, Tetsuro Izumi
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Abstract
A device for cutting sound grooves in a disc recording medium has a cutting stylus for recording sound by cutting on the disc recording medium. The cutting stylus comprises a cutting stylus structure of diamond having a cutting part for cutting the disc recording medium while producing a cut chip therefrom. A surface of the cutting stylus structure contacts the chip having been rendered electroconductive to a specific depth by an ion-implantation process.
Claims8
A device for cutting sound grooves in a disc recording medium, said device having a cutting stylus for recording sound by cutting on the disc recording medium, said cutting stylus comprising a cutting stylus structure of diamond having a cutting part for cutting the disc recording medium while producing a cut chip therefrom, at least a surface of the cutting stylus structure contacting the chip having been rendered electroconductive to a specific depth by an ion-implantation process.
Dependencies are inferred from the claim text.