The printing technique that involves direct contact between the paper and an etched copper plate is called "Intaglio printing."
In intaglio printing, the image is incised or etched into the surface of the copper plate. The plate is then inked, and the surface is wiped clean, leaving ink only in the incised lines.
When paper is pressed against the plate under high pressure, it picks up the ink from the recessed areas, resulting in a print with raised edges and a slightly embossed look. This method allows for fine details and rich textures in the printed image.
Intaglio printing is commonly used for creating high-quality prints, such as etchings, engravings, and aquatints. It is a precise and intricate printing process that requires skill and attention to detail.
