Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 3, March 1935)

[ACTIVE]

A Roller Developing Rack for Continuously Moving the Film during Processing by the Rack-and-Tank System

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 24, No. 3, pp. 261–274
Abstract: In order to obtain machine type development in the rack process, a rack has been devised by means of which the film is moved continuously over rollers during processing. The film traces a helical path passing over rollers carried by an upper and a lower shaft, and is then led back along the bottom of the rack where a closed loop is completed by splicing the ends together. The film is propelled by rotation of the upper shaft and rollers which, in turn, are driven by a motor and a reduction gear. The lower shaft is allowed a slight parallel displacement in the vertical direction to compensate for changes in the length of the film which occur when it is wetted. A rewind and roll holder are mounted upon a removal plate for use in loading and unloading film or leader, and the film is removed to a reel for drying. A wide variety of processing conditions have been met successfully in processing sound and picture negatives and prints.
Publication Date: 1935-03-01
DOI: 10.5594/J10118
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J10118
Author(s): C. E. IvesEastman Kodak Co., Rochester, N. Y.
Copyright: © 1935 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Crabtree J.I. : “The Development of Motion Picture Film by the Reel and Tank Systems,” Trans. Soc. Mot. Pict. Eng. (May, 1923 ), No. 16, p. 163 . EXTERNAL
2 Crabtree J. I. Ives C.E. : “Rack Marks and Airbell Markings on Motion Picture Film,” Trans. Soc. Mot. Pict. Eng. (Oct., 1925 ), No. 24, p. 95 . EXTERNAL
3 Crabtree J. I. Ives C.E. : “A Pneumatic Film Squeegee,” Trans. Soc. Mot. Pict. Eng. , XI (Aug., 1927 ), No. 30, p. 270 . EXTERNAL
4 Crabtree J. I. Ives C.E. : “A Replenishing Solution for a Motion Picture Positive Film Developer,” J. Soc. Mot. Pict. Eng. , XV (Nov., 1930 ), No. 5 , p. 627 . EXTERNAL

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C. E. Ives; A Roller Developing Rack for Continuously Moving the Film during Processing by the Rack-and-Tank System, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 3, March 1935); SMPTE, 1935. Available at https://doi.org/10.5594/J10118

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C. E. Ives; A Roller Developing Rack for Continuously Moving the Film during Processing by the Rack-and-Tank System, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 3, March 1935); SMPTE, 1935. Available at https://doi.org/10.5594/J10118

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<span class="citation">C. E. Ives; <cite>A Roller Developing Rack for Continuously Moving the Film during Processing by the Rack-and-Tank System</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 3, March 1935); SMPTE, 1935. Available at <a href="https://doi.org/10.5594/J10118" target="_blank" rel="noopener">https://doi.org/10.5594/J10118</a></span>

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<li>
C. E. Ives; <cite id="bib-10-5594-j10118">A Roller Developing Rack for Continuously Moving the Film during Processing by the Rack-and-Tank System</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 24, Issue: 3, March 1935); SMPTE, 1935
<span class="doi">10.5594/J10118</span>
</li>