Photochrom

Photochrom, sometimes spelled Fotochrom or Photochrome (although this term more often refers to later photographic postcards), and also called the Aäc process, is a process for producing colorized images from black-and-white photographic negatives via the direct photographic transfer of a negative onto lithographic printing plates. The process is a photographic variant of chromolithography, a broader term that refers to color lithography in general.

单词	Photochrom
释义	Photochrom 英语百科 Photochrom Photochrom, sometimes spelled Fotochrom or Photochrome (although this term more often refers to later photographic postcards), and also called the Aäc process, is a process for producing colorized images from black-and-white photographic negatives via the direct photographic transfer of a negative onto lithographic printing plates. The process is a photographic variant of chromolithography, a broader term that refers to color lithography in general.
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