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Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 3, March 1946)
[ACTIVE]

The Measurement and Control of Dirt in Motion Picture Processing Laboratories

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The commonest sources of contamination of motion picture film in processing laboratories are discussed, and suggestions are made for preventing foreign matter finding its way onto the surface of the film. The “tacky-dish” technique and other methods of detection of dirt sources are described, and examples are given of surveys made in actual Hollywood laboratories. The film handled in processing laboratories can be contaminated by dirt associated with the outside air used in the laboratory, by personnel, by mechanical equipment, or by processing solutions. It has been found that when there are complaints about dirt, etc., a systematic investigation usually reveals the source of the trouble quickly. This is particularly true if quantitative measurements are taken. These data allow one to construct a flow sheet which indicates the place where dirt is entering the system. The new tools used for this purpose are the smoke recorder, the “tacky-dish,” and the method of “lifting” samples. The Greenough microscope is a most useful and almost indispensable adjunct. The choice of air filtration systems and the proper kinds of uniforms are also discussed briefly.
Publication Date
1946-03-01
DOI
10.5594/J11843
Link
https://doi.org/10.5594/J11843
Author(s)
N. L. Simmons, A. C. Robertson
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N. L. Simmons and A. C. Robertson; The Measurement and Control of Dirt in Motion Picture Processing Laboratories, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 3, March 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J11843
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N. L. Simmons and A. C. Robertson; The Measurement and Control of Dirt in Motion Picture Processing Laboratories, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 3, March 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J11843

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N. L. Simmons and A. C. Robertson; The Measurement and Control of Dirt in Motion Picture Processing Laboratories, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 3, March 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J11843
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<span class="citation">N. L. Simmons and A. C. Robertson; <cite>The Measurement and Control of Dirt in Motion Picture Processing Laboratories</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 3, March 1946); SMPTE, 1946. Available at <a href="https://doi.org/10.5594/J11843" target="_blank" rel="noopener">https://doi.org/10.5594/J11843</a></span>

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N. L. Simmons and A. C. Robertson; The Measurement and Control of Dirt in Motion Picture Processing Laboratories, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 3, March 1946); SMPTE, 1946
doi: 10.5594/J11843
url: https://doi.org/10.5594/J11843
Snippet:
<li>
N. L. Simmons and A. C. Robertson; <cite id="bib-10-5594-j11843">The Measurement and Control of Dirt in Motion Picture Processing Laboratories</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 46, Issue: 3, March 1946); SMPTE, 1946
<span class="doi">10.5594/J11843</span>
</li>