METHOD OF PRODUCING COLOR POSITIVE IMAGE WITH USE OF COLOR NEGATIVE, ENLARGER AND ILLUMINATOR Russian patent published in 1995 - IPC

FIELD: color additive photographic printing. SUBSTANCE: method of producing color positive image comprises steps of forming at least three parallel light beams of blew, green and red colors, direction them onto negative with mutual inclination one relative to another and relative to the negative, projecting onto a photosensitive material or onto a screen. The method may be performed with use of an enlarger, including at least three optical channels, each channel having a light source, an optical system, an additive filter and a reflector, having at least three reflecting members, each is mounted on an optical axis of the respective optical channel in such a way, that their optical axis behind the reflector are mutually parallel and images of the light sources are arranged in a front focal plane of a condenser of the enlarger. That allows to decrease a time period of exposure by 20-40 times and to receive high quality photopositives with any desirable enlargement, including super-high one, with keeping a definition of the image, its color saturation and contrast degree. Spring, had been produced by such method, gives a sensation of volumetric image of objects, being filmed. EFFECT: enhanced quality of prints. 19 cl, 5 dwg