Handbook of projection for theatre managers and motion picture projectionists ([1922])

Record Details:

Title:
Handbook of projection for theatre managers and motion picture projectionists
Date:
[1922]
Publisher:
New York, Chalmers
Volume:
Handbook of projection for theatre managers and motion picture projectionists
Leaf #:
000313
Language:
English
Collection:
Books
Format:
Books
Contributor:
Gerstein - University of Toronto
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
14
Date Added:
July 19, 2022
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278 HANDBOOK OF PROJECTION FOR Anyhow, as we have said, there is no advantage in such a narrow splice in positive film. There should always be one full sprocket hole in the stub end, as at A, Fig. 79, and stub end A should never exceed .125 (%) of an inch in width, unless it be necessary to slightly exceed that width in order to avoid cutting into the sprocket hole. MAKING THE SPLICE.— Cut the film ends as per Fig. 79, end B being trimmed exactly on the dividing line (frame line) between two pictures, the other end with a stub end (A Fig. 79) extending .125 (]/%) of an inch beyond the frame line indicated by dotted line. It is of the utmost importance that every particle of emulsion be scraped off stub end A; also that the back, or celluloid side of end B be scraped lightly in order to roughen the celluloid and remove all dirt and grease. Relative. PbsiHon of Pilot's and Perforations //? Ne-w Film in Old Fi/m Figure 78A. Some prefer a very sharp knife blade and some a safety razor blade fixed in a convenient holder, to scrape with. What is used does not matter, provided a thorough job be done, without removing any appreciable portion of the celluloid itself, since that would weaken the film stock. OF IMMENSE IMPORTANCE.— It must be understood and remembered that the emulsion covers the entire film,