Servicing projection equipment (1932)

Page scan 000134 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000134
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
Description:
Date Added:
August 15, 2024
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118 LIGHT CONDITIONS 21. Unsteady, Side Motion of Picture (a) — The guides at the gate are not set correctly thereby allowing "play." This should be corrected. (b) — The aperture tracks are badly worn or an emulsion deposit is clogging them. These should be either replaced or cleaned and adjusted. ( c ) — Vibration of the worn parts in the intermittent, or the fact that the sprocket teeth and the film claws are so badly worn that they allow "play" are also possible causes of this trouble. (d) — There may be some strained or stretched sprocket holes in the film, or perhaps the film has a torn edge. Examine the film and eliminate those parts which are badly damaged. 22. Unsteady Picture, Although Projector is in Perfeet Adjustment (a) — Look for a carelessly made splice in which the sprocket holes are strained and not matched. (b) — The dirt on the film which is being run is carried into the aperture tracks or lodges (in case of heavy tension) on the tension shoes. Keep the film free from contact with the floor or any other points where it can acquire dirt.