Journal of the Society of Motion Picture Engineers (1930-1949)

Page scan 000292 from Journal of the Society of Motion Picture Engineers

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
000292
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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1949 LUBRICATION OF FILMS 289 behavior on various 16-mm projectors. Care is taken to -see that the projectors are in perfect working condition and that the gates of these projectors are cleaned with solvent-moistened plush after each test. Each projection is rated for steadiness of image, noise level, operation of film around snubbers, and for any deleterious effect on the sound quality. After the projection, the film is examined for scuffing of the Fig. 2 — Film-friction recorder. emulsion in those areas where the film comes in contact with the metal parts of the projector and for any damage to the perforations. There is no alternative to projection for the evaluation of a film treatment. However, it is time-consuming, since many tests are necessary in order to verify preliminary findings. Moreover, some of these ratings, such as noise level and action of film about snubbers, are a matter of opinion and hence the ratings will vary from one observer to another. An independent method has, therefore, been developed for the evaluation of film-lubrication processes. The samples