Abstract: An additive tri-color lamp house having three lamps for conveying filtered light into a mixing chamber and illuminating a photographic image contained on a photographic film. The illuminated image is then projected onto a photosensitive paper for the purpose of making photographic prints and copies. The lamp house is characterized by having a combination of additive primary color filters and subtractive primary color filters positioned in front of the lamps and the amount of each additive primary color (i.e. red, green and blue) conveyed through the filters is controlled. By the proper positioning of the color filters in front of the lamps, the time required for proper exposure of the three separate emulsion layers on conventional color print paper is approximately equal.

Abstract: A magnetic film carrier used in conjunction with a light source from a photographic printer. The carrier magnetically securing the film to the top of a printer lamphouse and allowing the film to be moved at various positions on the lamphouse for misaligned film or cropping during the printing of the film.

Abstract: A self-threading take-up magazine for receiving exposed photographic print paper therein. The take-up magazine automatically rolling up the print paper on a magazine core as prints are taken on a photographic printer.