WERKWIJZE VOOR HET VERVAARDIGEN VAN EEN CAPACITIEVE OPNEEMNAALD EN OPNEEMNAALD VERVAARDIGD VOLGENS DEZE WERKWIJZE.

摘要

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.