heliotype






noun, verb, he·li·o·typed, he·li·o·typ·ing.

  1. collotype.

noun

  1. Also called: heliotypy a printing process in which an impression is taken in ink from a gelatine surface that has been exposed under a negative and prepared for printing
  2. the gelatine plate produced by such a process
  3. a print produced from such a plate

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