Servicing projection equipment (1932)

Page scan 000157 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000157
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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SCREEN 141 SCREEN 1. Screen Not Given Results Up to Previous Performance (a) — This trouble usually is due to carelessness in keeping the screen clean and free from collected dust which settles on it. Careless rubbing with improper form of cleaning implement rubs-in the dirt instead of removing it. (b) — Kalsomined or other white surfaces easily get dusty, the dirt adhering easily because of dampness. Hold a white blotter against the screen : — if the screen surface is less white than the blotter, it needs refinishing. (c) — Metallized surface screens may lose their reflecting qualities because of chemical changes, dampness, and through inattention to proper cleaning methods. (d) — Chalk surfaces soil and show the dirt quickly ; but they can be removed from plaster foundation with a blackboard eraser and a new surface rubbed on, care being used to get on smoothly and free from swirls and uneven appearance.