Film Pulldown Mechanism Based on a Design by Samuel B. Grimson

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Before his death in 1955, Samuel B, Grimson* developed an ingenious film pulldown and film registration mechanism that formed a part of a special contact printer, designed specifically to achieve a “dot by dot” order of registration between the negative and positive films at the printer aperture, as is required for rendition by line-screen and reseau processes. Registration is derived from a claw and pilot-pin method that assures perfect registration between the films without any punching or bruising action by the claws or by the pilot pins. Grimson's mechanism is described by a man who for many years was associated with him and who designed and constructed most of his laboratory equipment.
Publication Date: 1958-06-01
DOI: 10.5594/J11124
Link: https://doi.org/10.5594/J11124
Author(s): Frederick T. O'Grady

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Frederick T. O'Grady; Film Pulldown Mechanism Based on a Design by Samuel B. Grimson, Journal of the SMPTE ( Volume: 67, Issue: 6, June 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J11124

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Frederick T. O&#x27;Grady; Film Pulldown Mechanism Based on a Design by Samuel B. Grimson, Journal of the SMPTE ( Volume: 67, Issue: 6, June 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J11124

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Frederick T. O'Grady; Film Pulldown Mechanism Based on a Design by Samuel B. Grimson, Journal of the SMPTE ( Volume: 67, Issue: 6, June 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J11124

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<span class="citation">Frederick T. O&#x27;Grady; <cite>Film Pulldown Mechanism Based on a Design by Samuel B. Grimson</cite>, Journal of the SMPTE ( Volume: 67, Issue: 6, June 1958); SMPTE, 1958. Available at <a href="https://doi.org/10.5594/J11124" target="_blank" rel="noopener">https://doi.org/10.5594/J11124</a></span>

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Frederick T. O'Grady; Film Pulldown Mechanism Based on a Design by Samuel B. Grimson, Journal of the SMPTE ( Volume: 67, Issue: 6, June 1958); SMPTE, 1958
doi: 10.5594/J11124
url: https://doi.org/10.5594/J11124

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<li>
Frederick T. O&#x27;Grady; <cite id="bib-10-5594-j11124">Film Pulldown Mechanism Based on a Design by Samuel B. Grimson</cite>, Journal of the SMPTE ( Volume: 67, Issue: 6, June 1958); SMPTE, 1958
<span class="doi">10.5594/J11124</span>
</li>