Mechanographic Recording for Motion Picture Sound-Tracks

The mechanographic system of recording known as the Millerfilm is described. It makes use of a special film having a coating of clear material upon the base, which, in turn, is covered by an extremely thin layer of opaque material, approximately 2 microns thick. The cutting tool is a specially prepared sapphire, the edges of which make a very oblique angle with the surface of the film, cutting a hill-and-dale sound-track. The track is cut “clean,” the demarcation between the opaque and transparent portions being very sharply defined; the opaque portions have a very high density, and the transparency of the clear portion is uniform.

Print ISSN

0097-5834

Published

1935-07

Content type

Original Research

DOI

10.5594/J05398