Society of Motion Picture Engineers : incorporation and by-laws (1929)

Page scan 000407 from Society of Motion Picture Engineers : incorporation and by-laws

Record Details:

Title:
Society of Motion Picture Engineers : incorporation and by-laws
Date:
1929
Publisher:
New York : Society of Motion Picture Engineers
Volume:
Transactions of the Society of Motion Picture Engineers (1929)
Leaf #:
000407
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:
September 12, 2024
Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

Fixing Baths — Crahtrce and Hart 391 the point of precipitation to be satisfactory for further use because of the propensity to precipitate a scum on the surface of the film. If the fixing bath had not been revived a precipitate of aluminium sulfite would normally have occurred after about 17,500 feet of Effect of Repeacteo Revival on the Properties OF A HARDENING FlXINQ BATH Test B > (U 2 Q Developer Life 2 3 4. Order of Revival Figure 10. Original Formula Potassium Alum o.bf. Acetic Acid [gl.j 0.5% Sodium Sulphite 0.3 % Hypo 30% Note: Vertical lines indicate EFFecT of Revival Bath Revived with 0.237. Acetic Acid after every 7500 ft of Motion Picture Film had been fixed in 50 ga of Fixing Ba+h. Effect of revival with acid at more frequent intervals than in the case of Figure 9, film had been fixed per 50 gallons. By reviving as above the life was prolonged to 30,000 feet. It is also apparent that the properties of the fixing bath remain more nearly uniform with frequent revivals using smaller quantities of acid. If the bath had been revived at sufficiently frequent intervals the various curves would tend to approximate