Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 10, October 1940)

[ACTIVE]

Improvements in Motion Picture Laboratory Apparatus

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 35, No. 10, pp. 397–410
Abstract: A machine for cleaning motion picture film by dry wiping has been equipped with a reservoir and distributing system so as to fit it for application of a cleaning liquid. In order to prevent dust from being carried into the roll when film is rewound, the wind up is enclosed in a box into which filtered air is pumped at a sufficient rate to maintain a forceful discharge stream at the point where the film enters. This stream dislodges dust particles. In order to have sufficient light on a meter in a darkroom the face of the meter is covered with a metal hood containing a suitable safelight. The meter is observed through a small aperture which permits very little light to escape into the room. Self-luminous finder buttons used as markers in a darkroom can be protected from dirt and corrosion by mounting them in an inverted glass ignition tube which is sealed at the open end with a thermoplastic. A developing machine roller is provided with frictional driving engagement with the shaft on which it is mounted by the use of spring-held shoes which bear against the shaft. Oscillation in a mechanical filter in the drive train of a continuous printer has been subdued by the use of Koroseal strips in place of springs and friction damping.
Publication Date: 1940-10-01
DOI: 10.5594/J10040
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J10040
Author(s): C. E. Ives
E. W. JensenEastman Kodak Co., Rochester, N. Y.
Copyright: © 1940 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Crabtree J. I. Ives C. E. : “Improvements in Motion Picture Laboratory Apparatus,” Trans. Soc. Mot. Pict. Eng. (May, 1924 ), No. 18, p. 161 . EXTERNAL
2 Ives C. E. Miller A. J. Crabtree J. I. : “Improvements in Motion Picture Laboratory Apparatus,” J. Soc. Mot. Pict. Eng. , XVII (July, 1931 ), p. 26 . EXTERNAL
3 Ives C. E. : “An Improved Roller Type Developing Rack with Stationary Drive,” J. Soc. Mot. Pict. Eng. , XXXI (Oct., 1938 ), p. 393 . EXTERNAL
4 Schoenfeld F. K. Browne A. W. Jr. Brous S. L. : “Recent Developments with Koroseal,” Ind. & Eng. Chem. , 31 (Aug., 1939 ), p. 964 . EXTERNAL
Brous S. L. Semon W. L. : “Koroseal—A New Plastic,” Ind. & Eng. Chem. , 27 (June, 1935 ), p. 667 . EXTERNAL

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C. E. Ives and E. W. Jensen; Improvements in Motion Picture Laboratory Apparatus, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 10, October 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10040

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C. E. Ives and E. W. Jensen; Improvements in Motion Picture Laboratory Apparatus, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 10, October 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10040

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<span class="citation">C. E. Ives and E. W. Jensen; <cite>Improvements in Motion Picture Laboratory Apparatus</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 10, October 1940); SMPTE, 1940. Available at <a href="https://doi.org/10.5594/J10040" target="_blank" rel="noopener">https://doi.org/10.5594/J10040</a></span>

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<li>
C. E. Ives and E. W. Jensen; <cite id="bib-10-5594-j10040">Improvements in Motion Picture Laboratory Apparatus</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 10, October 1940); SMPTE, 1940
<span class="doi">10.5594/J10040</span>
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