Journal of the Society of Motion Picture Engineers ( Volume: 40, Issue: 6, June 1943)
[ACTIVE]
Washing Photographic Films and Prints in Sea Water
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPE
- Volume
- 40, No. 6, pp. 380–391
- Abstract
- The use of sea water for washing photographic materials is practical only when a final wash of about 5 minutes in fresh water is used. This final wash removes the residual salts from the material and thus prevents (1) rapid fading of the image caused by these salts in the presence of hypo, and (2) absorption of moisture by the hygroscopic sea salts. The removal of hypo is greatly accelerated during washing in sea water as compared with fresh water. As a result, it is recommended that films and prints be washed in sea water for about one-half of the usually recommended times and finally for about 5 minutes in fresh water. An increase of 20° to 40°F in the temperature of sea water increases the rate of washing by 25 to 50 per cent but washing at as low a temperature as 50°F removes the hypo more rapidly than at 70° F in fresh water. The total time involved in washing in sea water followed by fresh water is somewhat less than that required in fresh water alone.
- Publication Date
- 1943-06-01
- DOI
10.5594/J09849- ISSN
- Print:
0097-5834 - Link
- https://doi.org/10.5594/J09849
- Author(s)
- G. T. EatonEastman Kodak Company, Rochester, N. Y.J. I. CrabtreeEastman Kodak Company, Rochester, N. Y.
- Copyright
- © 1943 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- 1 Hill J. R. Weber C. G. : “Stability of Motion Picture Films as Determined by Accelerated Aging,” Research Paper RP 950, National Bureau of Standards (Dec., 1936 ). EXTERNAL
- 10 Crabtree J. I. Ives C. E. : “The Storage of Valuable Motion Picture Film,” J. Soc. Mot. Pict. Eng. , XV (Sept., 1930 ), p. 289 . EXTERNAL
- 11 Sheppard S. E. : “The Removal of Free Acid from Nitrocellulose with Special Reference to the Use of Saline Leaches,” J. Ind. Eng. Chem. , 13 ( 1921 ), p. 1017 . EXTERNAL
- 12 Bassett H. Lemon J. T. : “Sodium Thiosulfate-Silver Thiosulfate System,” J. Chem. Soc. , Part II ( 1933 ), p. 1423 . Cf. Baines, H.: “The Chemistry of Fixation,” Phot. J., 69 (1929), p. 314. EXTERNAL
- 2 Hickman K. C. D. : “Washing Motion Picture Film,” Trans. Soc. Mot. Pict. Eng. , No. 23 ( 1925 ), p. 73 . EXTERNAL
- 3 Crabtree J. I. Matthews G. E. : “Photographic Chemicals and Solutions,” Amer. Phot. Pub. Co. , Boston, Mass. ( 1939 ), p. 112 . EXTERNAL
- 4 Van Nostrand's “Chemical Annual for 1926,” p. 645 . EXTERNAL
- 5 Mercier M. P. : “Sel iode eliminateur rapide des hyposulfites” (Iodated Salt, Rapid Eliminator of Hypo) , Bull. soc. Franc. Phot. , 30 ( 1897 ), p. 296 . EXTERNAL
- 6 Editorial, Amer. Phot. , 19 ( 1889 ), p. 38 . EXTERNAL
- 7 Baysellance O. : Phot. Rev. 12 ( 1903 ), p. 32 . EXTERNAL
- 8 Crabtree J. I. Ross J. F. : “A Method of Testing for the Presence of Sodium Thiosulfate in Motion Picture Films,” J. Soc. Mot. Pict. Eng. , XIV (April, 1930 ), p. 419 . EXTERNAL
- 9 Crabtree J. I. Eaton G. T. Muehler L. E. : “The Elimination of Hypo from Photographic Images,” J. Phot. Soc. Amer. , VI ( 1940 ), p. 8 . EXTERNAL
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G. T. Eaton and J. I. Crabtree; Washing Photographic Films and Prints in Sea Water, Journal of the Society of Motion Picture Engineers ( Volume: 40, Issue: 6, June 1943); SMPTE, 1943. Available at https://doi.org/10.5594/J09849
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G. T. Eaton and J. I. Crabtree; Washing Photographic Films and Prints in Sea Water, Journal of the Society of Motion Picture Engineers ( Volume: 40, Issue: 6, June 1943); SMPTE, 1943. Available at https://doi.org/10.5594/J09849
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G. T. Eaton and J. I. Crabtree; Washing Photographic Films and Prints in Sea Water, Journal of the Society of Motion Picture Engineers ( Volume: 40, Issue: 6, June 1943); SMPTE, 1943. Available at https://doi.org/10.5594/J09849
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<span class="citation">G. T. Eaton and J. I. Crabtree; <cite>Washing Photographic Films and Prints in Sea Water</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 40, Issue: 6, June 1943); SMPTE, 1943. Available at <a href="https://doi.org/10.5594/J09849" target="_blank" rel="noopener">https://doi.org/10.5594/J09849</a></span>
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G. T. Eaton and J. I. Crabtree; Washing Photographic Films and Prints in Sea Water, Journal of the Society of Motion Picture Engineers ( Volume: 40, Issue: 6, June 1943); SMPTE, 1943
doi: 10.5594/J09849
url: https://doi.org/10.5594/J09849
doi: 10.5594/J09849
url: https://doi.org/10.5594/J09849
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<li> G. T. Eaton and J. I. Crabtree; <cite id="bib-10-5594-j09849">Washing Photographic Films and Prints in Sea Water</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 40, Issue: 6, June 1943); SMPTE, 1943 <span class="doi">10.5594/J09849</span> </li>