fotokróm

Fotokrom is a term that refers to a printing process that creates color images from black and white negatives or transparencies. The process involves the use of dyes that change color when exposed to specific wavelengths of light. In the traditional fotokrom process, a black and white image was used as a base. Color dyes were then applied to the image in separate printing plates, with each plate corresponding to a different color (typically cyan, magenta, and yellow). When the plates were printed in register, they would combine to create a full-color image. This method was particularly useful for reproducing photographs and illustrations in books, magazines, and posters before the widespread adoption of modern color photography and printing techniques. The results of the fotokrom process often had a distinctive, somewhat painterly quality due to the way the colors blended. While largely superseded by more advanced technologies, the fotokrom process represents an important historical step in the development of color reproduction.