"documentGroup": "TOPIC PAGINATED INDEX"
Learn about this topic in these articles:
- In photoengraving: The halftone process
…produced by photography through a screen of loosely woven fabric. The screen was placed some distance forward of the plane of the receiving photographic surface (film or plate) and had the effect of breaking the gray tones of the subject into dots of varying sizes, through a combination of geometric…
- In printing: Rotogravure
The screen no longer plays an optical role. It is used to establish the partitions that separate all the cells of the honeycomb from each other and that form a surface of uniform height, while the cells are all of different depths, so that the ink…