Method for the manufacture of capacitive pickup styli
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United States of America Patent
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-
Feb 16, 1982
Grant Date -
N/A
app pub date -
Apr 21, 1980
filing date -
Apr 21, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method is provided for the manufacture of a capacitive pickup stylus. In the method of this invention an elongated stylus blank is prepared from a hard dielectric material such as diamond. The blank is formed into an elongated bar having substantially symmetrical diagonal cross-sectional halves along the length thereof and having opposing polished surfaces with one of the polished surfaces being on each of the diagonal cross-sectional halves. Thereafter, one of the cross-sectional halves is masked by a jig or the like and the other half which remains exposed is sputter coated with a conductive material. The coated stylus blank is then machined to provide a tip on a terminal end thereof with the coated polished surface positioned as the rearward electrode carrying surface of the stylus.
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