High-Speed Machine for Film Processing, using a Helix-Eliminating Angle Drive System

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The Photomec high-speed processing machine processes 35mm film at a rate of 300 ft/min (91 m/min). Considerable care has been taken to ensure that the film is handled as gently as possible. The basic approach of substituting twists on the film for the more conventional helix has been largely achieved by angling all the bottom spools and also by ensuring that the transfer of the film between the various sections of the processor takes place in a true straight line with no side deflection. To maintain the designed film path geometry, great attention has been given to the positional accuracy and rigidity of all film transport spools. Unusual features that have been incorporated, due to the high operational speed, include the provision of a rotary switch in addition to the normal stop and start control pushbuttons to enable the feed-on operator to reduce the film processing speed to 75 ft/min to recover from a “panic” situation should one arise. A warning light on the main control panel comes on under these conditions.
Publication Date: 1978-10-01
DOI: 10.5594/J16661
Link: https://doi.org/10.5594/J16661
Author(s): J. J. Galvin

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J. J. Galvin; High-Speed Machine for Film Processing, using a Helix-Eliminating Angle Drive System, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J16661

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J. J. Galvin; High-Speed Machine for Film Processing, using a Helix-Eliminating Angle Drive System, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J16661

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<span class="citation">J. J. Galvin; <cite>High-Speed Machine for Film Processing, using a Helix-Eliminating Angle Drive System</cite>, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978. Available at <a href="https://doi.org/10.5594/J16661" target="_blank" rel="noopener">https://doi.org/10.5594/J16661</a></span>

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J. J. Galvin; High-Speed Machine for Film Processing, using a Helix-Eliminating Angle Drive System, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978
doi: 10.5594/J16661
url: https://doi.org/10.5594/J16661

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<li>
J. J. Galvin; <cite id="bib-10-5594-j16661">High-Speed Machine for Film Processing, using a Helix-Eliminating Angle Drive System</cite>, SMPTE Journal ( Volume: 87, Issue: 10, October 1978); SMPTE, 1978
<span class="doi">10.5594/J16661</span>
</li>