Heliogravure or photogravure
Also known as heliogravure, photogravure is considered one of the finest photomechanical methods for reproducing photographs in large editions. The process involves acid-etching copper plates directly from an original silver print. The etched areas of the plate hold varying amounts of ink, corresponding to the tones of the original photograph.
Key characteristics of photogravure prints include:
- Detail and Tones: Photogravure produces prints with exceptional detail and sensitive tonal variations. Blacks often appear as delicate charcoals, while whites remain bright, especially when printed on high-quality paper.
- Plate Impression: If the prints are untrimmed, the impression of the printing plate is visible around the image, adding to the print’s aesthetic.
- Archival Quality: Photogravure prints are highly valued for their beauty and durability.
This technique results in incredibly beautiful prints, with a richness and depth that are highly prized by collectors and artists alike.