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Journal of the Society of Motion Picture and Television Engineers ( Volume: 62, Issue: 1, January 1954)
[ACTIVE]

Development of Motion-Picture Positive Film by Vanadous Ion

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The inorganic developer system of Roman, employing divalent vanadium ion as the active developing agent, has been further investigated. A solution prepared from vanadium pentoxide, sulfuric and hydrobromic acids, and reduced by electrolysis was found to double the speed of motion-picture positive emulsions with development times of the order of 20 sec at 60 F. Other sensitometric properties can be controlled to match those produced by conventional processing. A motion-picture film-processing machine employing the vanadium developer has been devised and tested and is described. Developer activity is maintained by continuous electrolytic regeneration of the solution, with replenishment made only to balance carryover losses.
Publication Date
1954-01-01
DOI
10.5594/J17052
Link
https://doi.org/10.5594/J17052
Author(s)
A. A. Rasch, J. I. Crabtree
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Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J17052.json

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A. A. Rasch and J. I. Crabtree; Development of Motion-Picture Positive Film by Vanadous Ion, Journal of the Society of Motion Picture and Television Engineers ( Volume: 62, Issue: 1, January 1954); SMPTE, 1954. Available at https://doi.org/10.5594/J17052
Snippet:
A. A. Rasch and J. I. Crabtree; Development of Motion-Picture Positive Film by Vanadous Ion, Journal of the Society of Motion Picture and Television Engineers ( Volume: 62, Issue: 1, January 1954); SMPTE, 1954. Available at https://doi.org/10.5594/J17052

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A. A. Rasch and J. I. Crabtree; Development of Motion-Picture Positive Film by Vanadous Ion, Journal of the Society of Motion Picture and Television Engineers ( Volume: 62, Issue: 1, January 1954); SMPTE, 1954. Available at https://doi.org/10.5594/J17052
Snippet:
<span class="citation">A. A. Rasch and J. I. Crabtree; <cite>Development of Motion-Picture Positive Film by Vanadous Ion</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 62, Issue: 1, January 1954); SMPTE, 1954. Available at <a href="https://doi.org/10.5594/J17052" target="_blank" rel="noopener">https://doi.org/10.5594/J17052</a></span>

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Preview:
A. A. Rasch and J. I. Crabtree; Development of Motion-Picture Positive Film by Vanadous Ion, Journal of the Society of Motion Picture and Television Engineers ( Volume: 62, Issue: 1, January 1954); SMPTE, 1954
doi: 10.5594/J17052
url: https://doi.org/10.5594/J17052
Snippet:
<li>
A. A. Rasch and J. I. Crabtree; <cite id="bib-10-5594-j17052">Development of Motion-Picture Positive Film by Vanadous Ion</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 62, Issue: 1, January 1954); SMPTE, 1954
<span class="doi">10.5594/J17052</span>
</li>