(Also known as C-print). An industrial photo process in which colored dyes are formed by a reaction between chemicals during developing. The chromogenic process was developed in the 1930s and first marketed widely in the 1940s. Chromogenic prints were less expensive than other color-printing processes and offered a variety of surface textures, from matte to ultra-glossy. In the 1970s, chromogenic became the most common color process, until digital prints appeared in the 1990s–2000s. Web resource here. Video here.