Copyright term, film labeling, and film preservation legislation : hearings before the Subcommittee on Courts and Intellectual Property of the Committee on the Judiciary, House of Representatives, One Hundred Fourth Congress, first session, on H.R. 989, H.R. 1248, and H.R. 1734 ... June 1 and July 13, 1995 (1996)

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464 To measure film tension in the feed or take-up system, place the equipment in its normal operating mode. Circle about 3 to 6 feet of film around the hub of the reel, attaching the other end to a dynamometer. To measure the tension necessary to move the film through the projector gate, place a short length of normal print material in the projector gate and close the gate. Attaching the film to a dynamometer, pull the film through the gate. Test and adjust rewind equipment to meet the same tension specifications. Provide an adequate supply of undamaged take-up reels. Take-up reels should be free from burrs and other defects, properly aligned and seated on their spindles, and of the largest practical hub diameter. The hub diameter should always be at least 4 inches. Storing and Handling Prints 1 . To create a spotless projected image, good housekeeping in the projection area is essential. Clean frequently any equipment or surface that may come in contact with the film. Select new, perfect reels for storage. House prints so that they will be free of dust. 2. Take-up reels on reel-to-reel machines should be cleaned at the start of each day to remove dust and debris, and checked for dirt at the end of each show. 3. Before screening, inspect the print for physical damage, handling the film itself as little as possible. When handling is necessary, hold film by its edges. During thread-up, handle only the leader and keep finger contact to a minimum. Never allow the film to touch the floor. 4. Whenever possible, film should be handled in a work area provided with positive pressure and with a filtered, temperature and humiditycontrolled air supply. 5. Clean film only where necessary. Use a commercially available film cleaner. Generally cleaning and lubrication should be done at the laboratory. 40 Redefining Film Preservation