Capacitance detection type record stylus and method for making t

Details Capacitance detection type record stylus and method for making t Capacitance detection type record stylus and method for making t

1981-09-08

1983-10-18

Richardson, Robert L.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

369173, G11B 344

Patent

active

044109741

ABSTRACT:
A capacitance detection type record stylus comprises a body of artificial diamond having flat faces lying parallel to the crystal planes {111} and {100} wherein adjoining identical crystal planes are either {111} or {100}. A crystal plane {110} is formed between any two of the adjoining identical crystal planes by lapping the edge between them. A conductive material is deposited on the crystal plane {110} to form an electrode for detecting signals recorded as geometric variations on a recording medium. Because of the aligned carbon atoms beneath the crystal plane {110}, a substantial amount of the conductive material penetrates deeply into the diamond making the electrode resistant to wear.

REFERENCES:
patent: 3943276 (1976-03-01), Knitter

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