Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950)

[ACTIVE]

Simplification of Motion Picture Processing Methods

Metadata

Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The chemical bath formulas and treating methods used in present-day continuous motion picture processing machines were adopted without essential modification from the earlier manually operated rack-and-tank process, to which the long times of treatment were well suited. In continuous processing at high running speed, these long times of treatment require the use of large-size machines of considerable complexity which are costly to build and difficult to operate and maintain. Recent work on rapid processing methods has shown that, with highly active baths and spray application, the times of treatment can be reduced by a factor of 25 to 50, so that equipment can be made smaller and simpler as well as easier to operate and maintain. With such types of film as can be strongly hardened in manufacture, elevated temperatures are used to accelerate the reactions further and to simplify temperature control without refrigeration. In this case, processing is complete in a minute or less. Even with films which are not hardened to such a degree in manufacture, the total time for processing can usually be reduced to a few minutes by making use of active baths applied by spraying and impingement warm-air drying. The latter films sometimes are hardened in a preliminary bath to gain time by the use of vigorous baths and elevated temperatures if the process comprises a number of successive bathing operations. The design of equipment to suit the needs of these processing methods is described with reference to the conditions which are met in television work, in the motion picture laboratory and in the field.
Publication Date: 1950-07-01
DOI: 10.5594/J05170
Link: https://doi.org/10.5594/J05170
Author(s): C. E. Ives, C. J. Kunz

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J05170.json

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

C. E. Ives and C. J. Kunz; Simplification of Motion Picture Processing Methods, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J05170

Snippet:

C. E. Ives and C. J. Kunz; Simplification of Motion Picture Processing Methods, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J05170

HTML (ISO 690 compliant)

Preview:

Snippet:

<span class="citation">C. E. Ives and C. J. Kunz; <cite>Simplification of Motion Picture Processing Methods</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950. Available at <a href="https://doi.org/10.5594/J05170" target="_blank" rel="noopener">https://doi.org/10.5594/J05170</a></span>

SMPTE's HTML Pub

Preview:

Snippet:

<li>
C. E. Ives and C. J. Kunz; <cite id="bib-10-5594-j05170">Simplification of Motion Picture Processing Methods</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950
<span class="doi">10.5594/J05170</span>
</li>