Device for cutting a sound groove on a disc recording medium

摘要

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.