Handbook for motion picture and stereopticon operators (1908)

Page scan 00038 from Handbook for motion picture and stereopticon operators

Record Details:

Title:
Handbook for motion picture and stereopticon operators
Date:
1908
Publisher:
Washington, D.C. : The Knega Company, Inc.
Volume:
Handbook for motion picture and stereopticon operators
Leaf #:
00038
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Date Added:
May 02, 2025
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32 Motion Picture in the fixing bath. The fixing should, as a rule, be continued as long again as it takes to make the image disappear. The film should then be thoroughly washed. An acid fixing bath with sufficient sulphite to keep the film clear is best, with alum to give it hardness. Washing and Hardening. To wash 25 minutes in rapidly-changing water is usually long enough, after which the film should be given a glycerine bath of five minutes (see formulas in back of book). If no cold water can be obtained, give the film a preliminary bath in alum or formaldehyde solution before developing; one ounce of formaline to 60 ounces of water. Developers. The standard pyro developer is in favor with many operators; but for traveling, the metol-hydro developer is one of the most desirable. It keeps well, and a great number of films can be developed therein. Rodinol is another good developer — a single solution developer. The metol bicarbonate formulae to be found in the back of this book is especially good for developing under-exposed film as it will not fog in an hour's development. Drying Rack. After thoroughly washing, fixing, and final washing, the film is carefully reeled upon a revolv