Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
00017
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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14 BATES AND RUNYAN July TABLE I FIRST DEVELOPER REPLENISHMENT No. 502 First Developer No. 502 R-3 First Developer Replenisher Calgon Igram 1 . 0 gram Metol 3 3.2 Sodium Sulfite 50 50.0 Hydroquinone 6 7.5 Sodium Carbonate 40 40.0 Potassium Bromide 2 . Sodium Thiocyanate 2 2.4 Sodium Hydroxide 1.1 Water to make 1 liter 1.0 liter Basic replenishment rate — 23 cc./ft. 35-mm film obtained by increased or decreased amounts of first development vary slightly from film to film but generally increases of first development show up as reduced magenta density in the balance. TABLE II SHORT STOP REPLENISHMENT No. 859 Short Stop No. 858 Short Stop (Replenisher for No. 859) Glacial Acetic Acid Sodium Acetate Water to make 5cc. 30 grams 1 liter 10 cc. 20 grams 1 liter pH fresh 5.20-5.30 pH fresh 4.70-4.80 Basic replenishment rate — 24 cc./ft. 35-mm film This solution is replenished at a rate necessary to maintain a pH of 5.0 to 5.5. The volume of replenisher is great enough to provide sufficient solution change to prevent accumulation of excessive developer solution. If the short stop pH is maintained at a higher pH than 5.5, increased hardening will result from the No. 901 hardener, but reduced short stopping action and scumming will be obtained. A pH lower than 5.0 produces less hardening by the No. 901 hardener and a pH lower than 4.5 may give difficulty with film blistering.