Transactions of the Society of Motion Picture Engineers (1929)

Record Details:

Title:
Transactions of the Society of Motion Picture Engineers
Date:
1929
Publisher:
New York : Society of Motion Picture Engineers
Volume:
Transactions of the Society of Motion Picture Engineers (1929)
Leaf #:
000406
Language:
English
Subjects:
motion pictures, Cinematography -- Periodicals
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
Preceeded by an unnumbered issue published in 1916 called: Incorporation and by-laws
Date Added:
November 17, 2022
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390 Transactions of 8.M.P.E., Vol. XIII, No. 38, 1929 A from one-half day to six days, and in test B from one day to six days. It is considered that a fixing bath which precipitates sulfur in one-half day at 115°F. should not be stored for too long a period at room temperature before use because the propensity Effect of Repeated Revival on the Properties OF A Hardeninq Fixing BATH<f^ Developer Life z Order of Revival Original Formula Potassium Alum o.«>V. Acetic Acid [ol] 0.5 % Sodium Sulphife 0.3 % Hypo 30% Note: Vertical lines indicate EPFecT of Revival. Batn Revived with o.a-% Acetic Acid after every lopooftof Motion Picture Film had been fixed in 50 fat. of Fixing Both. Figure 9. Effect of repeated revival with acid on the properties of a hardening fixing bath. to precipitate sulfur is too great. The developer capacity varied from 2% to 10% MQ25 for test A and from 4% to 10% MQ25 in test B. It is considered that a bath which requires only 2% MQ25 to precipitate aluminium sulfite at normal temperature is too near