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CORES AND SPOOLS

KODAK and EASTMAN Motion Picture Films are available on several types of cores and spools, each appropriate to the design of the equipment in which the films are to be exposed. The films are connected to the core, or spool, in one of the following ways: (1) wound on the core indicates the film is initially started by tightly lapping several convolutions of film around the core. When the film is wound on the core, the core cannot be removed from the film except by unwinding the film; (2) core inserted indicates that the film is initially wound on a collapsible mandrel that is later removed and the core inserted in the cavity of the roll. Thus, the film is not attached to the core.

The standard core and spool types for KODAK and EASTMAN Motion Picture Films are shown and described below:



Figure 34


Type T Core-16 mm. Figure 34 illustrates a plastic core with a 2-inch (51 mm) outside diameter and a 1-inch (25.4 mm) diameter center hole with keyway and film slot. Normally used with 16 mm films up to 400 feet (122 m) in length, except 100-foot (30.5 m) and 200-foot (61 m) lengths of camera negative and reversal materials, which generally come on camera spools with integral leaders and trailers for loading under subdued light.



Figure 35


Type Z Core-16 mm. A plastic core with a 3-inch (76 mm) outside diameter. Contains a 1-inch (25.4 mm) diameter center hole with keyway and a film slot. Used with camera and print films in roll sizes longer than 400 feet (122 m). See Figure 35.



Figure 36


Type U Core-35 mm. A plastic core with a 2-inch (51 mm) outside diameter. Contains a 1 -inch (25.4 mm) diameter center hole with keyway and a film slot. Customarily used with camera negative, sound, print, and television recording films, and positive films that are used in title cameras. Supplied in a variety of lengths. See Figure 36.



Figure 37


Type K Core-35 mm. A plastic core with a 3-inch (76 mm) outside diameter. Contains a 1-inch (25.4 mm) diameter center hole with keyway and a film slot. Used with 2000-foot (610 m), 3000-foot (914 m), 4000-foot (1219 m), and some 1000-foot (305 m) lengths of negative, sound, print, and television recording films. See Figure 37.



Figure 38


Type Y Core-35 mm. A plastic core with the same dimensions as the Type K Core but made of a stronger material to hold 6000-foot (1829 m) rolls of color print film. See Figure 38.



Figure 39


R-90 Spool-16 mm. A metal camera spool with a 3.615-inch (92 mm) flange diameter and a 1 1/4-inch (32 mm) core diameter. Square hole with single keyway in both flanges. Center hole configuration is aligned on both flanges. The standard sales lengths for this spool are 100 feet (30.5 m) of acetate base film. Used in cameras such as the Canon and Elmo for double super 8 film and in 16 mm spool-loading cameras. See Figure 39.



Figure 40


R-190 Spool-16 mm. A metal camera spool with a 4.940-inch (125 mm) flange diameter and a 1 1/4-inch (32 mm) core diameter. Square hole with single keyway, two offset round drive holes, and one elliptical hole in both flanges. Side 1 and Side 2 markings. Will accept 200 feet (61 m) of acetate base film. See Figure 40.



Figure 41


S-83 Spool-35 mm. A metal camera spool with a 3.657-inch (93 mm) flange diameter and a 31/32-inch (25 mm) core diameter. Square holes with single keyway in both flanges. Center hole configuration is aligned on both flanges. Intended for 100 feet (30.5 m) of acetate base film. Used with camera negative materials. See Figure 41.




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