Speak of the film core or in contexts where it's all about film, even from the core.
Initially lathed wooden core of the film has become a mass product from formgespritztem plastic, with such materials as PP , ABS or PC can be used. A film core is solid, light, chemically stable, environmentally friendly and yet be available in different colors. Dimensions and sizes are described with the international standard ISO 1039th In general, the film centers on a hole with a groove Einzolldorne with driver, in particular smaller internal diameter for the coil mandrel European projectors, the 8-mm camera square or even delicate spines, especially by older devices. Film is rolled from core to core: in the film factory in the film camera , the sound camera, in preparation for development, in the projection (core diameter of at least 5 inches or 125 mm), on the cutting table , in film cleaning equipment and other film handling equipment.
Risk-free film transport is possible with the film core, if the material is wrapped snugly on him, secured with tape to prevent loosening and packed in bags and cans is. So you can safely take a winding, film cores are often shaped to allow engagement with the fingers, and sometimes they also have grip grooves on the inside waistband. Most nuclei have a set obliquely to the radius slot in which you can attach the film.
The film core should always be slightly narrower than the movie. Colors At the film cut colored kernels are useful.
The following assignments are common in Europe (been):
White ? general use in raw stock and materials developed Gray ? auxiliary materials such as blank film with framing Black ? use in raw film material and the auxiliary black film Red ? Number 1, original image Blue ? Number 2, Tonoriginale (from the Lichttonkamera) Green ? Number 3, image duplicates Orange ? Number 4 ? purple number 5 ? yellow number 6 Colorless transparent film ? Blank Brown ? magnetic film Several important types Kern, A 'with 1-inch outside diameter and varying bore, for use in camera magazines for 35-mm film Core, U'niversal, outer diameter 2 inches, 1 inch hole, drive across the whole width, for 35 mm film Kern, R ', the same as U, drive only about half the width Kern, T ', such as U, for 16 mm film The cores are commonly used in external diameters of 50 mm, 75 mm and 100 mm. With shorter lengths of film you will use larger cores, as this is film-friendly (larger roll diameter, lower film tension during winding).
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