Motion Picture Herald (Oct-Dec 1952)

THE ASHCRAFT HYDRD-ARC designed to produce MORE LIGHT at LESS EDS T than any Suprex Lamp. It is the most economical and high-powered lamp for SMALL and MEDIUM DRIVE-INS We recommend the HYDRO-ARC for drive-in screens from 40 to 57 feet wide. nitrate and safety film is of extreme importance. There exists, however, no very simple and foolproof method for making such an identification. Eastman has issued an extremely informative and valuable booklet on the common causes of damage to 35mm release prints, from which are here taken some excerpts on the identification of film. For many years, film manufacturers have printed the words “NITRATE Safety Film and Nitrate Film. Figure 1 shows what can happen when a nitrate positive is printed from a safety master and a safety duplicating negative. The nitrate print carries not only its own name “Nitrate Film” in black, but the words “Safety Film” in white, printed through from the “safety” duplicating negative, and the same in black from the “safety” master positive. It is thus apparent that the former method of identification not is only inadequate. cs ASHCRAFT MANUFACTURING COMPANY 36-32 Thirty-Eighth Street Long Island City 1, N. Y. BE YOUR OWN SCREEN EXPERT! We invite comparison. Ask your Raytone dealer about The new "TRANSCENIC"* SCREEN SURROUND >tn outstanding success at TE5MA Well-proportioned from any seat. Constant, low-level illumination without distraction. Can be flown if necessary. Screen curtain can be used at all times. I6S CLERMONT AVENUE • BROOKLYN 5 NEW YORK < FILM” at frequent intervals along the edge of film made on nitrate base, and the words “SAFETY FILM” along the edge of film made on safety base. This was usually done by exposing an image of the words during the time the film was sliced or perforated. This identification system was adequate as long as only nitrate film was used in the motion picture theatres. Now that both but is very confusing. Realizing this, Eastman is now using two new and separate systems for identifying safety film. All Eastman safety films of present manufacture now carry a lengthwise dashed frame line marked after every fourth perforation. This mark is located, not at the extreme edges of the film, but between the perforations, as shown in Figure 2. The strip along the sprocket holes is the nitrate and safety films are in general use, there is the danger of printing the wrong information on the edge of the film caused by printing through from a safety negative on to a nitrate print, or vice versa. Thus it is possible to have theatre prints come through edge-marked with both names only area on the film which is ordinarily not exposed in printing. This new safety frame-line mark, when used on safety negative film, will not print through on positive film. Thus a more convincing identification is obtained. Whenever the new safety frame line between the perforations is 38 MOTION PICTURE HERALD. DECEMBER 6, 1952