International projectionist (Oct 1931-Sept 1933)

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October 1932 INTERNATIONAL PROJECTIONIST 29 PRE-RELEASE TREATMENT FOR ALL NEW PRINTS Trevor Faulkner EXCHANGE DEPT., PARAMOUNT-PUBLIX CORP. Projeciionisls will recall the article "Lubrication of Motion Picture Film," by Messrs. Crabtree and Ives, which appeared in this publication for July, 1932 {Vol. 3, No. 1, p. 7 ) . Bearing directly on certain salient features of this article is the accompanying contribution of Mr. Faulkner to the symposium on Theatre Problems of the Release Print which was a feature of the Spring, 1932, meeting of the S. M. P. E. Mr. Faulkner, attributing to projectionists their rightful share of respons,i,bility for film mutilation, at the same time defends them against the charge, made many times, that they are responsible for a major portion of film damage. His article goes further and helps to dispel the illusions heretofore existent abo-n many other phases of film handling. — Editor. npHE problem of treating motion pic-■ ture film prior to releasing it for projection is a very important one for Loth distributors and theatres, referring particularly to the treatment of the film immediately after printing, developing and drying. This paper is constructed upon observations made of the work of the department of a major distributor responsible for the maintenance of film in thirty-nine branch exchanges scattered throughout the United States. This department had been successful with its film maintenance problems to the point where the only serious difficulty that remained was the susceptibility of freshly developed film to become damaged prior to its having become seasoned by undergoing a suificient number of screenings. About 90 per cent of the damage sustained by new film occurs in the projection room. But although some projection rooms may be poorly equipped and operated by negligent or uninformed projectionists, I would state here emphatically that by far most projection rooms in which new film is used are well equipped and have competent men in charge of them. The damage, then, in some instances, is beyond the control of the projectionist in whose room it occurs and cannot be prevented by him. New film may be damaged in three ways: (1) by straining or tearing the perforations; (2) by scratching the emulsion, and (3) by the film's becoming buckled or warped, due to the shrinking or swelling of the gelatin when exposed to the heat of the projection lamp. The straining or tearing of perforations is, in most cases, due to the condition of the film itself, and cannot always be averted by competent projectionists even when the projectors are in good operating condition. This damage usually occurs during the first four or five passages of the film through the projector, and results from the depositing of emulsion on the shoes of the aperture plate. These deposits rarely accumulate to such an extent that the pressure between the aperture plate and the tension on the opposite side of the film is increased sufficiently to cause the teeth of the intermittent sprocket to tear the perforations by forcing the film down in front of the aperture; but the smallest deposit of emulsion on either of these shoes may, by baking, become so hard that its action on the emulsion of the film when passing over it is similar to that of passing a diamond over a pane of glass. When the diamond does not scratch the surface of the glass, it drags very little; but once it "bites" into the glass, the drag or traction may become consid * Canradty's "NORIS-HS" "NORIS-SCH" "NORISCHROMO HI HI-INTENSITY" *A Product of C. COISRADTY Nuernberg, Germany Established 1855 '^^The Standard of Excellence for more than 75 years^^ PROJECTION CARBONS T JL HE technical skill applied to the refinement and manufacture of Conradty Carbon produces its unflinching brilliancy of illumination. They burn longer, yet cost no more. Inquiries Invited. NORIS CARBON COMPANY, Ine. 160 FIFTH AVENUE New York, N. Y. Mohawk Building Sole Distributor for C. Conradty, Nuernberg, Germany Carbons for Projection — Arc Lamps — Welding — Microphones — Resistances — Lighting Arresters — Contacts — Carbon Brushes — Electrodes