The Lubrication of Motion Picture Film

When freshly developed or so-called “green” motion picture film is passed through a projector, there is a tendency for an incrustation to accumulate on the aperture plate or tension springs which retards the free passage of the film through the machine. Chemical analysis has shown that this incrustation consists largely of gelatin with more or less silver, dirt, and oil, but it contains usually only a trace of the metal or alloy of which the gate is composed.

Print ISSN

0096-6460

Published

1927-09

Content type

Original Research

DOI

10.5594/J06595