Journal of the Society of Motion Picture Engineers ( Volume: 20, Issue: 4, April 1933)

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A Method for the Calculation of the Correct and Most Economical Concentrations of Elon and Hydroquinone in a Borax Developer for Motion Picture Film

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 20, No. 4, pp. 343–354
Abstract: Holding temperature, developing time, and agitation constant, the following relations exist: (1) In an elon-borax-sulfite developer, sulfite held constant and borax varied with the elon, γ = K log E + C, where E = elon conc. and K and C = constants: (2) In an elon-hydroquinone-borax-sulfite developer, hydroquinone and sulfite held constant and borax varied with the elon, γ = K log E + C, where E = elon conc. and K and C = constants: (3) In an elon-hydroquinone-borax-sulfite developer, elon, borax, and sulfite held constant, γ = K log H + C, where H = hydroquinone conc. and K and C = constants: (4) In an elon-hydroquinone-borax-sulfite developer, sulfite held constant and borax varied with the elon, γ = K1 log E + K2(log E)(log H) + K3 log H + K4, where E = elon conc., H = hydroquinone conc., and K1, K2, K3, K4 = constants: (5) In an elon-hydroquinone-borax-sulfite developer, γ and sulfite held constant, and borax varied with the elon, there exist optimum concentrations of elon and hydroquinone for maximum economy.
Publication Date: 1933-04-01
DOI: 10.5594/J10144
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J10144
Author(s): Alan M. GundelfingerChemical engineer, Hollywood, Calif.
Copyright: © 1933 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Carlton H. C. Crabtree J.I. : “Some Properties of Fine Grain Developers for Motion Picture Film,” Trans. Soc. Mot. Pict. Eng. , XIII ( 1929 ), No. 38, p. 406 . EXTERNAL

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Alan M. Gundelfinger; A Method for the Calculation of the Correct and Most Economical Concentrations of Elon and Hydroquinone in a Borax Developer for Motion Picture Film, Journal of the Society of Motion Picture Engineers ( Volume: 20, Issue: 4, April 1933); SMPTE, 1933. Available at https://doi.org/10.5594/J10144

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Alan M. Gundelfinger; A Method for the Calculation of the Correct and Most Economical Concentrations of Elon and Hydroquinone in a Borax Developer for Motion Picture Film, Journal of the Society of Motion Picture Engineers ( Volume: 20, Issue: 4, April 1933); SMPTE, 1933. Available at https://doi.org/10.5594/J10144

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<span class="citation">Alan M. Gundelfinger; <cite>A Method for the Calculation of the Correct and Most Economical Concentrations of Elon and Hydroquinone in a Borax Developer for Motion Picture Film</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 20, Issue: 4, April 1933); SMPTE, 1933. Available at <a href="https://doi.org/10.5594/J10144" target="_blank" rel="noopener">https://doi.org/10.5594/J10144</a></span>

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<li>
Alan M. Gundelfinger; <cite id="bib-10-5594-j10144">A Method for the Calculation of the Correct and Most Economical Concentrations of Elon and Hydroquinone in a Borax Developer for Motion Picture Film</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 20, Issue: 4, April 1933); SMPTE, 1933
<span class="doi">10.5594/J10144</span>
</li>