Stylus for detecting signals recorded as geometric variations an

Details Stylus for detecting signals recorded as geometric variations an Stylus for detecting signals recorded as geometric variations an

1981-02-18

1984-01-17

Konick, Bernard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358151, G11B 906

Patent

active

044266600

ABSTRACT:
A stylus for use in detecting signals as electrostatic capacitance variations of the information recorded in the form of geometric variations on a surface of a recording disc comprises a diamond body and a stylus electrode formed on a surface of the diamond body by depositing a conductive substance having a strong affinity to carbon and heating the deposited diamond body to an elevated temperature to allow the carbon atoms of the diamond body to diffuse into the deposited conductive region to form a carbide compound. Hafnium, titanium or tantalum is found suitable as the conductive substance.

REFERENCES:
patent: 3843846 (1974-10-01), Miller
patent: 3873782 (1975-03-01), Palmer
patent: 3927887 (1975-12-01), Oda et al.
patent: 3930117 (1975-12-01), Clemens et al.
patent: 3945902 (1976-03-01), Hawrylo et al.
patent: 4052738 (1977-10-01), Hosomi et al.
patent: 4105213 (1978-08-01), Owaki et al.
patent: 4199782 (1980-04-01), Wada et al.

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