Device for cutting a sound groove on a disc recording medium

Details Device for cutting a sound groove on a disc recording medium Device for cutting a sound groove on a disc recording medium

1979-03-28

1980-07-15

Phillips, Charles E.

Undertaking

274 47, G11B 344

Patent

active

042124719

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.

REFERENCES:
patent: 4105213 (1978-08-01), Owaki et al.

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