Servicing projection equipment (1932)

Page scan 000113 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000113
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Date Added:
May 15, 2025
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.

PICTURE DEFECTS 97 PICTUEE DEFECTS 1. Action Is Not Natural, But Is Fast, Slow, Jerky, Etc. (a) — The motor drive of the projector may not be operating properly. The line voltage may be altering considerably. Xote the line voltage ; and if it is not caused by that, look for loose or corroded contacts or connections to the drive motor. Xote these and correct them if they are faulty. 2. Clearness of Picture Is Reduced After Lenses Are Removed and Replaced (a) — The lenses may have been re-assembled incorrectly. The front combination and the rear combination may have been replaced in the wrong manner. If the rear element is composed of two separate pieces, it may have been replaced incorrectly. Note if the thicker, cemented element is at the front, and if the heaviest convex side is toward the screen. Always lay the lens elements, when they are taken out, on a soft cloth in the order in which they are removed, and return them in the same order in which they were removed.